Loading...
Welcome to Metal Mine! Today is Share:

Table of Content

    15 May 2015, Volume 44 Issue 05
    Previous Issue    Next Issue
    Numerical Simulation on Stope Parameter Optimization of Upward Mining in Deep Mine
    WANG Yun-Min, SUN Guo-Quan, WANG Xing
    2015, 44(05):  1-6. 
    Asbtract ( 1082 )   PDF  
    Related Articles | Metrics
    The rock deformation caused by “three-under” mining under complex environment threatens the safety of ground structures.Taking a typical “three-under” mine of Jin Kouling as an example,the numerical simulation on surface deformation characteristics for 25 groups of upward mining plans under different stope parameters are conducted with numerical simulation method in the combination of quantitative and qualitative method.The results show that the upward stoping-filling method with pointed pillars poses a great advantage in protecting surface structures.The surface tilt value is -0.18 mm/m,curvature is -0.003×10-3/m and horizontal deformation value is 0.11 mm/m,which is less than the allowed by reference to the Code for Design of Nonferrous Metal Mining(GB50771-2012) when the stope parameters are chosen as panel length of 70 m,the thickness of top pillar 6 m,width of rib pillar 6 m,size of pointed pillars 4 m×4 m,and the distance of pointed pillars at 12 m.
    Influence of Slope Excavation of Open Pit Mine on the Existing Tunnel
    WU Liang, JIN Mu, LI Lei-Bin, ZHONG Dong-Wang, JIANG Pei
    2015, 44(05):  7-11. 
    Asbtract ( 1007 )   PDF  
    Related Articles | Metrics
    In view of the effect of slope blasting and excavation in an open pit mine on the existing tunnel,the particle vibration velocity control standard of the surrounding rock is determined at 20 cm/s,with reference of the relevant standards and similar domestic engineering experience.The particle vibration of tunnel wall under the blast loading is monitored,and an installation scheme for measurement instrument is put forward.And the attenuation law of particle vibration at tunnel surrounding rocks is analyzed.The fitting coefficients of the vibration velocity attenuation at horizontal radial,horizontal tangential and vertical peak are 0.85 or above.Information feedback in time can contribute to optimizing the blasting parameters.Combined with numerical analysis,the vibration velocity of tunnel surrounding rock and the dynamic stress distribution rule are obtained.The peak value of particle vibration velocity at surrounding rock is 19 cm/s,which verifies the reliability of the estimated explosive quantity.The research provides security for the smooth construction.
    Optimization of Ore Hauling Process System in Northwestern Overlapped Orebody of Daxin Manganese Mine
    TANG Xiu-Wei, LI Jian-Wen, WEI Zhi-Xing, WU Xian-Tu, CHEN Qing-Lin, CHEN Qing-Fa
    2015, 44(05):  12-15. 
    Asbtract ( 1145 )   PDF  
    Related Articles | Metrics
    The continuity and economy of ore hauling process system is the important content of mine technological management.Based on the exploitation status of overlapped ore body in northwest stopes under Daxin Manganese Mine,the problems existing in the available ore hauling process system were analyzed.Furthermore,four types of hauling process optimization schemes were determined on the basis of primary selection.By systematically analyzing the technical economy of optimization schemes,the optimal hauling process scheme b （Ⅰ and Ⅱ,Ⅲ orebody with waterfall shared chute) was synthetically determined.The optimal scheme owns the advantages as following；reduce the scraper series of Ⅰ orebody and improve the efficiency of ore drawing；Integrate the shaft structure of Ⅰ，Ⅱ and Ⅲ orebody and embody the systematization of ore drawing structure arrangement；Reduce the production cost,increase the ore recovery rate and realize the maximum economy.Research results can provide technical references for the design of ore hauling process system in mining of similar multi-layer,gently inclined and thin orebody.
    The Yielding Development in Hanging Haulage Roadway in Gongchangling Underground Mine
    FU Yu, REN Feng-Yu, GONG Guo-Hui, CHEN Ji-Hong
    2015, 44(05):  16-19. 
    Asbtract ( 1074 )   PDF  
    Related Articles | Metrics
    There are strenuous ground pressure activities at the -280 m level in the central mining area of Gongchangling Mine，so that the high-strength support can not solve the problems that are caused by the ground pressure.The destructions of roof falling，rib spalling and floor heave still occur even after the roadways have been supported，which have seriously affected the normal production of the mine.It is indicated that the ground pressure activity is basically caused by the pressure of the above wedge-shape rock mass based on the investigation of the failure positions of the haulage roadway，the test results of the rock mechanics properties and the analysis of the effect of the hanging wall to the stability of the roadways.The mechanic model is established and the analysis results have been proven based on the calculation of the model.The yielding angle is determined to be from 74°to 78° by analyzing the relationship between the mining boundary in the hanging wall and the destruction boundary of the roadways.Based on the yielding angle，the rock mass can be divided into the elastic zone and the plastic zone.The hanging haulage roadway at the -340 m level is located in the elastic zone，so the yielding development is adopted in this area.The practice shows that the yielding development can effectively alleviate the problems that are caused by the ground pressure in the hanging haulage roadway and ensure the normal production of the mine.
    The Radiation Well Model Used in Tailings Dam
    DU Yan-Qiang, YANG Chun-He, ZHANG Chao, WU Shang-Wei, LI Xiao-Sheng, SHEN Lou-Yan
    2015, 44(05):  20-23. 
    Asbtract ( 1120 )   PDF  
    Related Articles | Metrics
    The high saturation line is a potential safety hazard for metal mines.Establishing radiation well is an effective method for decreasing the saturation line in tailings dam.The determination of saturation line location and the calculation of drainage amount are key problems when building radiation well in tailings dam.After analyzing the field saturation line data，the characteristics of saturation line under the effect of radiation well were summarized as follows:Within the range of radiant tube，the curve of saturation line is an exponential function with an inside cave.Beyond the range of radiant tube，the curve of saturation line is a logarithmic function with an outside cave.The model of saturation line and the seepage model at radiation well were deduced.The comparison between the field test and theoretical data is made and the error is analyzed.It is shown that the calculated values of saturation line and drainage amount by the model agreed well with the measured.This model can be used to predict the position of saturation line and the water drainage amount.
    Strip-filling Parameter Optimization and Stability Analysis of a Coal Mine under Buildings
    ZHANG Gui-Yin, XUE Shan-Bin, ZHANG Liang, WEI Jian-Zhen, XU Ning-Hui
    2015, 44(05):  24-27. 
    Asbtract ( 1070 )   PDF  
    Related Articles | Metrics
    To solve the problems in coal mining under buildings，railroads and water bodies and improve recovery of coal resources，the strip-filling parameters in a coal mine are investigated.According to the key strata theory，the limit span of roof for the "under-three" coal seam is calculated.It is known that the fracture of basic roof can not occur in this coal mine when the width of unfilled area is less than 41.8 m.Based on this，three strip-filling programs are analyzed by numerical simulation software FLAC3D to research the plastic zone and stress distribution of strip-filling under different width of backfill and the fixed filling space.The results show that the filling rate should be controlled at 70% or less.Through the comparison and analysis of different simulation programs，the ratio of plastic zone in strip-filling is about 30%，and the elastic core of backfill is of long-term stability，when the filling rate is 55.5%.Practices show that the destruction of surface buildings is within the range of gradeⅠwhen "under-three' mining happens under these strip-filling parameters.It is significant of using waste rock to achieve the green mining.
    Experimental Test and Strain Damage Parameters Analysis of Brittle Rock Under Cyclic Loading-Unloading
    LU Gao-Ming, LI Yuan-Hui, ZHANG Xi-Wei, JIN Chang-Yu
    2015, 44(05):  28-33. 
    Asbtract ( 1149 )   PDF  
    Related Articles | Metrics
    To investigate the characteristics of strength，deformation and damage properties of brittle rocks under cyclic loading and unloading conditions of different stress，rock mechanical tests with various of stress paths corresponding as the uniaxial compression test，triaxial compressive test，uniaxial and triaxial cyclic loading and unloading test are carried out on the diabase specimens from Macheng iron mine，to obtain the strength，deformation properties and the characteristics of complete stress-strain curve of brittle rock under cyclic loading and unloading conditions.A kind of relative strain damage parameter in the process of cyclic loading and unloading test，combined are presented.Combining with the existing damage mechanics theory，the damage evolution of brittle rock are researched in the process of failure.The laboratory investigation shows that:①The peak strength of cyclic loading and unloading test is 10%~20% lower than the average uniaxial compressive strength，while the peak strength appears discreteness under triaxial conditions.②The variation trend of elastic constants is closely related to the damage mechanism of microcrack closed，open and expansion of rock under cyclic loading and unloading conditions.③The extent of damage accumulation inside the rock increased with the increase of cycles and the absolute strain damage parameter are little affected by confining pressure，while radial relative strain damage parameter is influenced much by confining pressure.
    Economic Stripping Ratio of the Open Pit Coal Mining under the Condition of Frigid Climate
    BAI Run-Cai, SUN You-Gang, LIU Chuang, LIU Guang-Wei, SUN Lei
    2015, 44(05):  34-38. 
    Asbtract ( 926 )   PDF  
    Related Articles | Metrics
    Aiming at the present situation that most of the opencast coal mines in China distribute in the northern area and the wildly applies the Shovel-Truck technology，and considering that the frigid climate has important effects on mechanical equipment fuel prices，maintenance and working performance in mine area，the relation between frigid climate，fuel prices，sticky bucket coefficient and technical failure rate is analyzed，and the influence on strip mining cost from frigid climate is calculated by the theoretical analysis method and the statistical analysis method，and on the basis of the analysis of open pit mining limit's determining principle and the influence factors.The calculating method of economic stripping ratio for open-pit coal mien is researched and confirmed by considering the climate factors.Taking two opencast coal mines with the same scale but different weather conditions for examples，the applicability of the design standards of open-air mines in coal industry in opencast coal mines with different weather conditions are compared and analyzed，which present that the economic stripping ratio of mine A without influence from the frigid weather is 6.32 m3/t，and on the other hand，it is 5.78 m3/t in mine B which is strongly influenced by the cold weather.All of these show that the frigid climate will increase the open pit mining cost and lower the economic stripping ratio，so it should be taken into consideration in boundary delineation of surface mine.
    Deep Highly Stressed Roadways in Cixi Coal Mine and the Control Technology
    SONG Wei-Jie, QIAO Wei-Guo, LIN Deng-Ge, LI Wei
    2015, 44(05):  39-43. 
    Asbtract ( 1004 )   PDF  
    Related Articles | Metrics
    The air inlet pedestrian roadway at -890 m of Cixi Coal Mine has occurred serious deformation and destruction due to its poor engineering geological conditions，great horizontal tectonic stress and low self-supporting capacity.To control surrounding rocks deformation of the roadway and ensure its stability，the elastic-plastic analysis on deep high-stress roadway deformation and destruction under different yield criterion and conditions is carried out，and the yield criterion applicable to engineering practice is determined.Based on FLAC3D，combined with a lithological composition analysis and mechanical property test results of surrounding rocks，the supporting structures and parameters of different supporting schemes are contrasted and optimized，and a combined supporting scheme of bolting and shotcreting is proposed，with anchor bolts and cables as the core.Mine pressure after the excavation of roadways are monitored to verify the reliability of the supporting scheme further and obtain the characteristics of surrounding rock change after excavation.Engineering practice shows that the combined supporting scheme of bolting and shotcreting has a significant effect on improving the stability and integrity of deep highly stressed roadways，and makes the stress and deformation of surrounding rocks be more stable.It provides a strong technical support to ensure the long-term security and stability of coal mines.
    Stability of the Pillar and Stope Structure of Optimization of Gently Inclined and Medium Thick Phosphate Rock
    LI Xiao-Shuang, LI Yao-Ji, WANG Meng-Lai, ZHU Jian-Xin
    2015, 44(05):  44-47. 
    Asbtract ( 1127 )   PDF  
    Related Articles | Metrics
    Based on the gently inclined medium thick phosphate deposit at the east mining section of +2 150 m level of Jinning No.6 mine under Yunnan phosphate Co.，Ltd.，the similar simulation experiment of the stability of stopes pillars under room and pillar mining was carried out by the similarity simulation of mine pressure plane stress modeling.Based on the experimental results，the stress changing law of the above roof of stope pillar during the mining along the strike direction of phosphate were investigated.The macroscopic instability and failure model and instability mechanism were also studied.Then，the stope structural parameters under the room and pillar mining method are optimized.The experimental results showed：The deformation and breaking features of stope wall rock under room and pillar mining method has obvious three phase characteristics.The overburden rocks are divided into caving belt，fissure zone，micro cracks loose belt according to the deformation level.After the ore body excavation finished，individual pillars are recovered.After that，the whole instability and large-scale failure of mining pillar may suddenly occur，called obviously domino effect phenomenon.At the same time，the stope structural parameters of 10 m room and 8 m pillar are recommended so as to ensure the mining safety.The relevant research can provide theoretical and technical guidance for the underground mining of the deep ore body or similar mines.
    Study on the Optimization of Mining Methods Based on Rough Fuzzy Set Theory
    ZHAO Shu-Guo, SONG Huan-Hu, SONG Wei-Dong
    2015, 44(05):  48-51. 
    Asbtract ( 1076 )   PDF  
    Related Articles | Metrics
    Based on the deficiencies in selection of conventional mining methods，a new method of exploring the gentle dip thin ore body with the hydraulic pressure support long wall method was put forward，through integrating the rough set theory with the fuzzy set theory in mining method optimization.With the comprehensive analysis of mining safety，economic，technical index and friendly environment factors，11 kinds of influence factors are taken as condition attributes and the results of mining optimization and evaluation are as decision attributes to build the mining method optimization evaluation index system，the membership degree matrix and weight coefficient matrix on the quantitative analysis for the proposed mining methods；The knowledge dependency and attribute importance of theory evaluation method is applied to transform the weight coefficient of fuzzy mathematics into rough set attribute importance evaluation.Discriminated rule is extracted from the reduction results to propose the calculation method of weight coefficient and determine the optimal scheme for hydraulic support long wall caving method.The results show that mining method selected by rough fuzzy set theory are adaptable，with features of safety，high efficiency and low consumption.It makes the selection of mining method more scientific and objective，and has a higher theoretical and engineering practical value.
    Pre-control under the Top to Medium-depth Hole-by-hole Detonation Technology of Mining
    SU Hong-Rui
    2015, 44(05):  52-53. 
    Asbtract ( 1033 )   PDF  
    Related Articles | Metrics
    For the unstable ore rock conditions of much broken ores in local underground mine，and in order to ensure the safety of mining roof，the small drift slicing cut and fill stoping is adopted，and the mining height and width is generally controlled at 4 m.Due to its mall section size of the room and low efficiency in rock blasting，this stoping method seriously restricted the production capacity.In order to explore a more safe and efficient mining method，and ensure the safety of roof rock，attempts a lot by referring to the downward blasting method in open-pit mine and the high precision hole-by-hole blasting technique.Then，the downward medium-height hole-by-hoe denotation process with pre-control roof for underground mine is proposed and cumulated in success.Due to large scale support on stope roof and sidewalls before blasting，this process can ensure the follow-up working procedure and personnel security.As the stope section size increases，the blasting efficiency increases，and the capacity of single room improves significantly.At the same time，the downward medium height drilling makes the efficiency increased，the labor intensity of workers reduced，and the working environment improved obviously.
    Analysis of Ultimate Bearing Capacity of Soft Interlayer under Pillar
    YIN Yong, QIAO Lai-Jun, ZHOU Guo-Qing
    2015, 44(05):  55-60. 
    Asbtract ( 1102 )   PDF  
    Related Articles | Metrics
    Soft interlayer in rock and soil mass is a widespread geological structure.In underground mining engineering，the existence of soft interlayer will bring disadvantages to the design and stability analysis of pillar.In view of the ultimate bearing capacity of soft interlayer，based on Prandtl's plastic extrusion failure mode and upper bound limit analysis method，formulae of ultimate pressure of soft interlayer are deduced under plane strain condition and space axisymmetric condition，where different shearing stress conditions of various locations on the surface of soft layer are also taken into account.Analysis of calculated data shows that，the ultimate pressure of soft interlayer has a relationship with width-height ratio of soft interlayer and friction factor on its surface.In general，the ultimate pressure of soft interlayer is enhanced both with the increase of its aspect ratio and friction factor on its surface，and the effectiveness of friction conditions on its surface is even more significant with the increase of aspect ratios.However，as the friction factor increased to a certain degree，its effect on ultimate pressure in various aspect ratio scales will gradually diminish until it vanishes.Besides，comparison with other methods adopted single friction condition on the surface of soft interlayer demonstrates that，the solution in the paper is almost the same with others with the smaller aspect ratio and is higher than others with a larger aspect ratio.Furthermore，as the friction factor and roughness on interlayer surface is extremely large，solutions of other methods including this text are identical approximately.The formula of ultimate bearing capacity could provide a reference to the design and stabilization analysis of a soft interlayer underlying pillars.
    Study on Stoping Scheme of Horizontal Pillars under the Back-fill
    LIAO Wei-Cheng, LIU Bo, ZHANG Yao-Ping, XU You-Min
    2015, 44(05):  61-65. 
    Asbtract ( 1096 )   PDF  
    Related Articles | Metrics
    A horizontal pillar with 15 m of thickness was kept between -385 and -400 m to ensure the stoping safety of high or medium section during production period in Anqing copper mine.With the mining deepening，more and more pillars are reserved.It's going to excavate these horizontal pillars in order to recover copper mine as much as possible.Three mining plans including upward medium length hole stopping with subsequent back-fill，downward medium length hole stopping with subsequent back-fill，and upward drift stopping method are proposed for the horizontal pillar mining according to the real working situation.These three plans are contrasted from its efficiency and safety，especially safety.The upward medium length hole stopping with subsequent back-fill is recommended because of its safety.Four kinds of excavation orders are given for this plan，showing as from the middle to the side，from the left to the right，from the right to the left and from the side to the middle.Then，mine numerical model is created based on FLAC3D and Surpac software to calculate the four excavation processes at -385 m.The analysis shows that the vertical displacement，principle stress and plastic distribution are minimum by adopting the excavation order from the side to the middle.So it is the optimal scheme.
    Application of Integration Technology in Handling Complex Mined-out Area in Luomu Open-pit Mine
    WANG Chun-Yi, PENG Fu-Hua
    2015, 44(05):  66-71. 
    Asbtract ( 1109 )   PDF  
    Related Articles | Metrics
    The integration of detection，stability monitoring and handling technology of mined-out area in Luomu open-pit mine are introduced.The high-density electrical and seismic imaging method are used to preliminarily detect the position of gobs，and then the drilling exploration and three-dimensional laser detection methods are adopted to detect the accurate characteristics of gobs.Microseismic technology is used for all-day，three-dimensional and real-time monitoring on the gob stability.It makes a very good application effect on the stability quantitative analysis，the influence of blasting vibration to the gobs and the stability monitoring in the processing of handling gobs.The gravel filling and controlled blasting technology is adopted to treat different gobs.According to characteristics of mined-out areas and the difficulty in gob handing，gobs are treated once or several times to finish the handling.With the use of this integrated technology，a large number of gobs in Luomu open-pit mine have been successfully treated.It ensures the safety production，and has vital significance for the sustainable development of mine.Moreover，it has important reference value to the similar mine at home and abroad.
    Deep Reduction Research on Marine Placer
    LIU Yi-Ran, ZHANG Jian-Liang, WANG Zhen-Yang, LIU Zheng-Jian, XING Xiang-Dong
    2015, 44(05):  72-76. 
    Asbtract ( 1129 )   PDF  
    Related Articles | Metrics
    According to the coal-based reduction technology,the effect of reduction temperature,curing time and C/O molar ratio on the microstructure of the reduced marine placer-graphite briquettes were analyzed by using scanning electron microscope (SEM) and X-ray diffraction (XRD).Meanwhile,the separation and agglomeration behavior of iron slag as well as the reduction results of metallic mineral were also discussed,and the micro-mechanism of reduction was clear.The results show that the metallization rate and briquette strength could reach 94.23% and 243.3 N/P at reduction temperature 1 300 ℃ for 30 minutes and w(C)/w(O) 1.1；Metallization rate and compress strength increased with reduction temperature and time,forming more iron joined crystal and slag bonding,which can increase the strength of the sample；Appropriate C/O ratio can provide sufficient reductant during the deep reduction without residual graphite to threaten the compress strength.The phase-transition in solid reduction of marine placer was summarized as Fe3-xTixO4→Fe+FeTiO3→Fe+Fe2TiO5.
    Research on Magnetizing Roasting-Low Intensity Magnetic Separation of a Xuanlong-Type Oolitic Hematite Ore
    LIU Shuo, ZHANG Ya-Hui, ZHANG Jia, ZHANG Yan-Jiao, ZHANG Hong-Xin, LI Hong-Chao
    2015, 44(05):  77-81. 
    Asbtract ( 1153 )   PDF  
    Related Articles | Metrics
    The iron grade of Xuanlong-type Oolitic hematite ore is up to 48.65%.Main iron mineral is hematite,accounting for 85.84% of the total iron,followed by iron carbonate,representing 9.50%.The content of magnetic iron is low,only 3.12%.Gangue minerals are quartz with trace of harmful elements,phosphorus,aluminum,etc..In order to explore efficient,low-consumption development and utilization of the resources,the process of magnetic roasting-low intensity magnetic separation was selected.The results showed that the mass ratio of sample with 0.2 ~ 0 mm bituminous coal and -0.074 mm accounted for 62% as 12%,roasted at 800 ℃ for 45 min,ground the roasted products to 89.2% -0.074 mm,and through the process of low intensity magnetic separation (magnetic field intensity 105.6 kA/m),iron concentrate with iron grade of 62.50% and recovery of 85.50% was obtained.Therefore,the process of magnetic roasting-low intensity magnetic separation is the suitable process to deal with Xuanlong-type oolitic hematite.
    Collecting Performance and Mechanism of a New Cation Collector to Quartz
    ZHU Yi-Min, CHEN Jia-Li, JIA Jing-Wen, LIU Shuang-An
    2015, 44(05):  81-84. 
    Asbtract ( 1033 )   PDF  
    Related Articles | Metrics
    The flotation behavior,including the dosage of collector,the temperature and pH of pulp,on quartz using DBA-1 as a new collector developed by Northeastern University was investigated.Zeta potentials,infrared spectrum analysis and contact angle measurement were used to detect the interaction mechanism of the of the quartz surface with DBA-1,to check out the collecting performance of DBA-1 on quartz.The results show that：①Recovery of 97.3% on quartz flotation is obtained at the optimum conditions of particle size from 0.038 to 0.074 mm,pulp pH 8.5,slurry temperature 18 ℃,and the dosage of collector 75 mg/L.②After adding DBA-1 to the slurry,point of zero charge on quartz surface increased from 2.26 to 10.10.It is indicated that adsorption of DBA-1 occurred on the quartz surface.The adsorption mainly includes electrostatic adsorption and hydrogen bonding adsorption.③The quartz surface contact angle was increased obviously after adding DBA-1,which enhanced its hydrophobicity and floatability,and the recovery rate will be improved significantly when the contact angle slightly raise from 12.6°～27.0°.
    Depressing of Polysaccharides in Floating Separation of Talc from Molybdenite of Non-polar Surface Minerals
    欧Le-Ming , QI Chao
    2015, 44(05):  85-89. 
    Asbtract ( 1302 )   PDF  
    Related Articles | Metrics
    Polysaccharides have been widely used as effective depressants of non-polar minerals,but studies on its mechanism and influencing factors are uncompleted.The progresses in this aspects are presented through summarizing studies on exploring the mechanism and influencing factors of employing dextrins,carboxymethyl cellulose(CMC),lignosulphonate and guar gum to depress talc and molybdenite.Also,analysis is made from the perspective of separating molybdenite from talc.The research shows that the depressing effect is influenced by the pH condition,ionic strength and ion types of the pulp and affected by the characteristics of polysaccharides molecular as well.As to the flotation separation from these two minerals,lignosulphonate could efficiently separate molybdenite from talc,and also the pre-adsorption of dodecane onto molybdenite could prevent the adsorption of lignosulphonate and make lignosulphonate as a efficient depressant.Besides,the depressing effect of polysaccharides should be not limited in the adsorption amount,also mainly depending on the character of adsorption.The adsorbing mechanism of lignosulphonate exists argument,including hydrophobic interaction,electrostatic interaction,chemical interaction,hydrogen bond,hydroxyl bond or their combination.
    Beneficiation Tests of Low Grade and Fine Disseminated Molybdenum Ore in Hubei Province
    SHAO Hui, PENG Hui-Qing, LIAO Xiang, CHEN Ming-Yu, WU Di
    2015, 44(05):  90-92. 
    Asbtract ( 1063 )   PDF  
    Related Articles | Metrics
    A low grade and fine disseminated molybdenum ore in Hubei Province contains 0.129% of molybdenum,most of which exist in form of molybdenite distributed in the fissures of gangues with small flakes or scaly single crystals.With grain size of 0.01 mm,it is difficult to be liberated.In order to realize efficient exploitation of the mineral resources,stage grinding and stage separation process was conducted on the ore.The result showed that using the closed-circuit flowsheet of first grinding,one roughing-one cleaning-two scavenging,concentrate from first stage separation enduring regrinding,one roughing-six cleaning-three scavenging and middles back to the flowsheet in turn,molybdenum concentrate with 51.08% Mo and recovery of 85.92% was obtained.The process can achieve high efficient development and utilization of the ore.
    Electrochemical Control Flotation on Improving Separation Indexes of a Refractory Nickel Ore
    ZHANG Wei, WANG Yu-Bin, YU Le, LI Shuai, PENG Xiang-Yu
    2015, 44(05):  93-96. 
    Asbtract ( 1121 )   PDF  
    Related Articles | Metrics
    A certain magmatic liquation nickel sulfide ore is from Shaanxi Province with nickel grade of 0.53%.Serpentine and talc，as the main gangue minerals，is easy to be slimed and have good floatability，and the valuable minerals are not easy to be liberated from the gangues.By adopting the process of three roughing-one cleaning-two scavenging and middling back to the flowsheet in turn，nickel concentrate could be obtained with only 5.12% Ni and 68.40% recovery.In order to increase the resources utilization and enterprise's benefits，electrochemical control flotation experiments were carried out.The results indicated that：using DHN as electrochemical control agent，nickel concentrate with nickel grade of 5.20% and recovery of 73.78% was obtained under the same grinding fineness and process.Compared with the on-site concentrate，nickel grade was increased by 0.08 percentage points，while the recovery rate was increased by 5.38 percentage points.The method has good performance in improving the concentrate amd is easy to be put into practice as well.
    Beneficiation Tests of the Rubidium-containing Ore
    WANG Dan, ZENG Qiang, JIN Ming, YANG Tian-Qi
    2015, 44(05):  97-100. 
    Asbtract ( 1113 )   PDF  
    Related Articles | Metrics
    A large rubidium deposit in our country is considered as the first domestic deposit with Rb2O grade of 0.12% and the total metal volume of nearly 100 000 t.The rubidium exists in biotite in form of isomorphism.Beneficiation experiments were carried out to efficiently recover the rubidium.The results showed that at the grinding fineness of 60% passing 0.074 mm,rubidium concentrate with Rb2O grade of 0.28% and recovery of 65.93% was obtained through the flotation process of two roughing-three cleaning,and middles back to the flow-sheet in turn.With good flotation index,rubidium can be well recovered by this process.
    Effect of Roasting Mode on Vanadium Extraction from Stone Coal
    HUANG Xian-Bao, CHEN Tie-Jun, ZHANG Yi-Min, MA Hao, SU Tao, LIU Juan
    2015, 44(05):  101-104. 
    Asbtract ( 889 )   PDF  
    Related Articles | Metrics
    A stone coal from Hubei Province contains 0.72% V2O5.The vanadium mainly occurs in aluminum silicate minerals like muscovite.In order to efficiently extract the vanadium from stone coal with low energy consumption，comparison tests of fluidized roasting & static roasting were conducted on the ore，with particle size from 0.45 to 1 mm.The results indicated that，fluidized roasting can obtain ideal index in low roasting temperature with short time.The leaching rate of vanadium is 83.52% when fluidized roasting at 750 ℃ for 15 min and is 74.93% when static roasting at 800 ℃ for 60 min.XRD and SEM analysis of roasted products showed that main reason for better performance of vanadium extraction by roasting is that roasting can destroy the structure of muscovite，liberate the vanadium from white mica crystal lattice，and make it possible on acid leaching liquid get into the interior of muscovite and make extraction more easily.Therefore，fluidized roasting can highly improve vanadium extraction effect with low consumption.
    Preparation of the Fine-crystal NaA Molecular Sieve by Grinding Method
    QI Xiao-Yong, WANG Qian, XU Hui-Jun, ZHANG Jian-Chun, DU Qing-Yang
    2015, 44(05):  105-108. 
    Asbtract ( 1129 )   PDF  
    Related Articles | Metrics
    In order to investigate the method to produce NaA molecular sieve in large scale,the fine-crystal NaA molecular sieve was prepared by grinding method using NaA zeolite as raw materials and NaCl as grinding aids.The phase composition,morphology,particle distribution and surface area of NaA molecular sieve before and after grinding were characterized by SEM,BET,and Laser Particle Size Analyzer,and Cd2+ exchange capacity was determined.The results showed that the particle size of NaA molecular sieve was decreased from 3 μm to 0.98 μm,the surface area was increased from 12.306 m2/g to 27.997 m2/g,and Cd2+ exchange capacity was enhanced from 294 mg/g to 352 mg/g after grinding under conditions of rotating speed 400 r/min,w(NaCl)∶w(NaA) of 12∶1,mass ratio between ball and powder 7∶1 for 7 h.Therefore,the dry grinding method is a novel method for mass production of NaA molecular sieve,with easy operating and low cost.
    Study on the Technological Mineralogy of Iron Ores from Bayan Obo Mine
    CHEN Xing-Jie, NI Wen, FAN Dun-Cheng, LI Jin
    2015, 44(05):  109-113. 
    Asbtract ( 1086 )   PDF  
    Related Articles | Metrics
    The technological mineralogy of iron ores from Bayan Obo Mine was studied for better development and utilization of iron resources.The results showed that：①Valuable minerals in the ores mainly include magnetite,hematite and rare earth minerals,while the gangue minerals mainly include fluorite,quartz,aegirite,calcite and feldspar；②The iron mineral was mainly magnetite,over 70% of which was fragmental and breccia magnetite closely coexisting with columbite,apatite,monazite and barite,while sometimes magnetite aggregates existed；most of hematite was closely embedded in the fragmental and breccia magnetite；③Granular monazite as the most widespread rare earth minerals in the ores,have complex inlaying and paragenesis relationship with other minerals；④The gangue minerals appeared in irregular and xenomorphic granular structure,are closely inlayed with other gangue and valuable minerals；fluorite as the most widespread gangue mineral,sometimes encapsulated rare earth minerals；⑤The dissemination size of iron mineral is very small；However,disseminated at the size of over 10 μm,magnetite accounting for only 54%,was slightly coarser than hematite accounting for only 40%；⑥Because of its complicated embedment,superfine dissemination,and difficulty in liberation,Bayan Obo mine should be reduced deeply firstly to aggregate the micro-fine iron particles together and then be recovered.
    Research on the Process Mineralogy of the Ore from Dishui Copper Mine in Xinjiang
    SHI Wen-Ge, GONG 恩Pu, YAO Yu-Zeng, ZHANG Yong-Li, LI Zi-Han
    2015, 44(05):  114-118. 
    Asbtract ( 942 )   PDF  
    Related Articles | Metrics
    Due to the lack of the process mineralogy of Dishui Copper Mine,the minerals resource have not been utilized very well before being developed.To improve this situation,process mineralogy research on representative samples was conducted.The results showed that：① There is a great variety of copper minerals in the ore.Oxidized copper minerals are the main form of copper,accounting for 83% of the total copper.Copper sulfide minerals and natural copper share the other 17%.Main copper bearing minerals includes malachite,zigueline,chrysocolla,tenorite,azurite,covellite,chalcocite,bornite,chalcopyrite,etc.；②The gangue minerals are mainly quartz (flint)，plagioclase feldspar，microcline,striped feldspar，biotite，calcite,and alteration minerals are chlorite,epidote，etc..③The main textures of ore are sandy texture,pelitic texture,angular texture，metasomatic dissolution structure,packet structure and shell structure.The main structures in the ore are layered structure,disseminated structure,banded structure,massive structure and network structure.④There is great difference among various copper minerals.Grain size has an extensive distribution from 0.001 mm to 1 mm,and some one is even up to 15 mm.The systemic process mineralogy research provide theoretical basis to determine the scientific and reasonable beneficiation process and parameters.
    Study on Collecting Performance of a New Amphoteric Chelating Collector DJW-2 on Quartz
    HUANG Yu-Mei, ZHU Yi-Min, JIA Jing-Wen, LI Yan-Jun
    2015, 44(05):  119-121. 
    Asbtract ( 1040 )   PDF  
    Related Articles | Metrics
    College of Resources and Civil Engineering, Northeastern University，Shenyang 110819，China The new amphoteric chelating collector DJW-2 was developed by Northeastern University to improve the effect of reverse flotation desilication in the magnetic separation concentrate. The tests on the dosage of DJW-2, optimum pH value of the pulp, the amount of calcium chloride and suitable flotation temperature were investigated to investigate the collecting performance on quartz, using pure mineral quartz as floating object. The result showed that when the pulp pH value was 9, dosage of DJW-2 was 750 mg/L, flotation temperature was between 38 and 18 ℃, the recovery rate could reach more than 90%.The further analysis on the zeta potential measurement and the infrared spectrum indicated that the dominated force that the DJW-2 on the surface of quartz were hydrogen boning adsorption and chemical adsorption. Therefore, the DJW-2 is a collector with high efficiency, low energy consumption and strong adaptability on reverse flotation desilication of concentrate of magnetic separation.
    Application Status and Prospect of GIS in Mining System
    WANG Lei-Ming, YIN Sheng-Hua
    2015, 44(05):  122-128. 
    Asbtract ( 1174 )   PDF  
    Related Articles | Metrics
    Geographic information system （GIS） has plenty of functions，such as acquisition，management，analysis and output of a variety of geographic spatial information and so on.As a comprehensive discipline combined of geography，cartography，remote sensing technology and computer science，it has been widely applied and researched in recent years.Combing with the latest research results in this field，the application status of GIS in mining system have been analyzed from the aspects of mine geological prospection and evaluation，mining machinery and personnel position，mining ventilation network simulation，mine slope disaster monitoring and early-warning，mine environment monitoring and mine reclamation and others.Based on this，the directions of GIS in mining system with representative of 3D/4D GIS are prospected from the aspects of constructing large-scale mining GIS spatial database and cloud GIS，integrating with GIS，RS，GPS in mining environmental monitoring and stability process，and constructing interoperable GIS,combination with the spatial visualization and virtual reality technology in the process of mining production management so as to provide some reference for construction of digital mine.
    Realization of Aided Design of Surface Movement Observation Station and Data Processing in Mining Area
    FANG Qi, GUO Guang-Li- , ZHU Xiao-Jun
    2015, 44(05):  129-134. 
    Asbtract ( 1176 )   PDF  
    Related Articles | Metrics
    In order to improve the automation of the surface movement observation station in design and the efficiency of data processing and mapping of movement and deformation curve，based on the programming language of Visual Basic(VB) and Visual Basic for Application （VBA)，the functions such as query of parameters，computation of observation line，observation station design，output of data，data processing and automatic mapping of surface movement observation station are realized by adopting the technology of Access，AutoCAD and Excel.Firstly，the surface and linear route movement observation stations at working face are arranged quickly by using the AutoCAD software；then the observation data are processed automatically and the deformation and movement graphs are mapped based on the Excel software.In addition，the function of axis label of scatter chart with a smooth line is optimized；Finally，both of the functions are integrated into one program to realize the function module integration so as to overcome the insufficiency of single function，low degree of automation and difficulty in modification.The research results show that，the program written in this paper can satisfy the needs for variable observation station design and the special requirement of mapping the movement and deformation curve.Besides that，this program is conducive to improve the automation degree of mining surface movement observation and it can also provide some reference for establishing the surface movement observation system.
    Research on Georeferenced Coordinate Positioning Method of Three-dimensional Laser Scanning System for Mine Goaf
    YAN Teng-Fei, LI Yuan-Hui, XU Shuai, AN Long
    2015, 44(05):  135-139. 
    Asbtract ( 1232 )   PDF  
    Related Articles | Metrics
    In view of the problems such as difficulty in equipment moving，high requirements for measuring environment and the complicated process of the equipment installment and remove that exist in the process of georeferenced coordinate setting of goaf by using the existing three-dimensional scanning system，the georeferenced coordinate positioning principle and coordinate positioning method of the three-dimensional scanning system under the complicated environment of mine goaf are researched.A portable，concise and efficient coordinate positioning method based on tripod support is introduced.A field test plan is designed so as to verify the data processing precision of the method，besides that，the new coordinated positioning method is adopted to conduct field accurate detection on mine goaf.The research results show that:①the spatial locations of the data model obtained by the new coordinate positioning method have good alignment with that by the existed coordinate positioning method.The volume differences between both models is very small，which can be neglected within the scope of engineering precision；The engineering precision of the new coordinate positioning method based on the tripod support is basically identical to that of the existed coordinate positioning method；②based on the detection data obtained by using the new coordinate positioning method，the accurate three-dimensional model of goaf is established，which can provide valuable reference data for mine goaf governance.The above research further show that，the new georeferenced coordinate positioning method based on tripod support has the advantages of easily handling，assembly and disassembly，and it is good for solving the existing problems of coordinate positioning method and improving the efficiency of the three-dimensional scanning on cavity.
    Jointed Rock Survey and Stability Analysis Based on Sirovision
    ZHANG Chi, XU Shuai, ZHANG Xiao-Hui, HE Guo-Qiang
    2015, 44(05):  140-144. 
    Asbtract ( 1026 )   PDF  
    Related Articles | Metrics
    Aiming at the low efficiency and labor-intensive of obtaining the information of rock mass structural surface by artificial close contact measurement，the Sirovision three-dimensional and non-contact measurement system of rock mass structural surface is researched.The hardware composition and specific features of post-processing software of the system are introduced，the suitable method of obtaining rock mass structure surface information and the flow of data processing are proposed and applied to survey and analyze the jointed rock in Tiedanshan iron mine successfully.Firstly，according to the original formation of two-dimensional images obtained in the investigation area，the three-dimensional roadway space model data with real coordinates is got.Then，the rock mass structure surface is digitally identified，the obtained indentified data are grouped on the basis of occurrence so as to obtain the spatial orientation of different joints group.Finally，according to the positional relationship among different joints group，the wedge of the structure is analyzed based on the post-processing software system to determine the location of dangerous structural body.The above research can provide some reference for the mine safety production and optimization of engineering parameters.
    Geological Characteristics of Ore-bearing Rocks in Laochang Polymetallic Deposit,Lancang County
    DAO Yan, YANG Fan, LI Feng, YU Can
    2015, 44(05):  145-148. 
    Asbtract ( 1168 )   PDF  
    Related Articles | Metrics
    The Volcanic rocks and granite porphyry are widely distributed in Laochang mining area，Lancang county，which are regarded as the main metallogenic geological body of volcanic gush flow depositing metallogenic system and deep porphyry hydrothermal metallogenic system.The titanium magnetite in the olivine basalt of the volcanic rocks is conducted on spectrum analysis，the different minerals of amygdaloidal sodium trachyte lava and the microcrystaline potassium feldspar of almond-shaped potasium trachyte lava are analyzed by electron microprobe respectively.Besides that，the times and petrological characteristics of volcanic rock，the times，cause，source area and wall rock alteration characteristics of granite porphyry in mining area are summarized comprehensively.The analysis results show that:①the volcanic diagenetic age is the early carboniferous epoch，and it owns the important ore-bearing lithology of the Ag-Pb-Zn mine in mining area,the space-time distribution of the ore deposit is controlled by the mining volcanism，which provides materials basis and important driving force of heat source for metallogenic activity；②concealed granite porphyry is the porphyry molybdenum ore-forming parent rock in mining area，and the granite porphyry intrusion period belongs to the early himalayan magmatic activity；③the early carboniferous volcanism and magmatism in himalayan period provide favorable conditions for the formation of metallogenic system.The above research results have some certain reference value for analyzing the metallogenic system.
    Testing System and Software Development of Mine Ventilation Based on Wireless Sensor
    YANG Yan-Guo, WANG Yi, ZHOU Xin-Yu
    2015, 44(05):  149-152. 
    Asbtract ( 873 )   PDF  
    Related Articles | Metrics
    The traditional ventilation resistance test method has feature of low precision and complex operation,a multi-parameter wireless test mine ventilation system based on wireless sensor network technology is proposed.Designing of system hardware and software is focused on,where CC2530 chip is considered as the control core processor of hardware.Both 51 single chips and the RF technology are integrated as a whole to realize data communication with the MAX232 and PC.Meanwhile,on the basis of Z_TACK communication protocol stack,C language is adopted to write the key control program in software.The system can achieve real-time monitoring of temperature,humidity and barometric pressure at two points within the underground roadway,and truly realize automation,high precision and network of mine ventilation resistance testing.
    Application Situation and Prospect of Long Distance Slurry Pipeline Transportation System in China
    CHEN Guang-Guo
    2015, 44(05):  153-157. 
    Asbtract ( 1270 )   PDF  
    Related Articles | Metrics
    As a high efficiency，new energy-saving and environment-friendly modes of transportation，the long distance slurry pipelines has a broad application and development prospects.In order to make slurry workers understanding of the status and dynamic information of pipeline transportation system more comprehensive and immediate，so as to promote the application and development on the technology in China，manufacture development and application level of domestic pipeline transportation system is introduced on the aspects of power pump，pipes and valves.The latest progress and application situation of main equipments and material in pipeline transportation system are summarized.Future development trend of slurry pipeline transportation system is prospected.
    Application and Revamping of Deep Cone Thickener on a Mine in Harbin
    CHEN Hui, WANG Hong-Jiang, WU Ai-Xiang, WANG Yi-Ming
    2015, 44(05):  158-161. 
    Asbtract ( 1120 )   PDF  
    Related Articles | Metrics
    Based on the debugging operation of paste backfill system in a copper-zinc mine in Harbin，reasons of clear water polluted by feeding slurry，low concentration underflow，and pressure rake during debugging operation were pointed out.Corresponding solutions including reformation of feedwell，flocculant dosing points and underflow circulating pipes etc.were introduced.It has been proved that：①It is beneficial for creating a suitable condition for stable and sufficient mixing of tailings and flocculant by choosing proper selection of the tailings dilution mode and decreasing the kinetic energy of slurry entering feedwell；②Increasing properly and arranging reasonably the flocculant dosing points can improve flocculation effect and underflow concentration of deep cone thickener；③Reasonable design of the underflow circulating pipes allows for smooth flow of underflow，reduce running resistance of rake and decrease the accident of pressure rake.
    Study on High Slope Sliding Deformation Mechanism induced by Transiting from Opencast into Underground Mining
    SUN Shi-Guo, GUO Wei-Chen, LIU Wen-Bo, GUO Pei, DONG Yan-Fei
    2015, 44(05):  162-165. 
    Asbtract ( 1051 )   PDF  
    Related Articles | Metrics
    The slope stability during transition from opencast into underground mining is one of the key techniques and the core issues in safe mining production.Based on engineering project，the numerical simulation analysis of discrete element method is applied to select appropriate mechanical parameters.With the use of 3DEC，Matlab and other software systems，the slope stability，slip deformation characteristics and follow trends of high slopes at underground mining are analyzed.As the result，Due to the combined impact of both underground mining and open-pit mining，the surface subsidence curves show as multiple sink basins of different sizes under superposition，so the rock slope deformation extent at different regions are different.According to the results of numerical simulation，the mining-induced displacement angle at underground mining area are different at the different exploitation stage，indicating that with different mining thickness，the damage level of the overlying rock is different.So during the transition from opencast into underground mining，the slope stability is mainly impacted by multiple factors such as goaf treatment and different mining thickness.Furthermore，the slope stability evaluation requires a combination of the specific circumstances of the mining.
    Research on Regularity of Surface Subsidence in the Strip Mining and Solid Backfill Mining
    WANG Jiong, GUO Guang-Li, ZHU Xiao-Jun, GUO Qing-Biao
    2015, 44(05):  166-170. 
    Asbtract ( 1001 )   PDF  
    Related Articles | Metrics
    At present，the strip mining and backfilling mining are often used under buildings.In order to study the surface movement and deformation law of the two methods，combined with measured data of the strip mining and solid filling mining in Huayuan mine，study on the static，dynamic surface movement and deformation regularity respectively is made.It is shown as follows：strike boundary angle is 56° in the strip mining，and strike boundary angle，uphill boundary angle，downhill boundary angle are 57°，62°，53° separately in the solid filling mining.The subsidence basin features of the two methods are basically in line with the traditional caving mining，but the dynamic surface movement and deformation regularity of the two methods are different from the traditional caving mining.During the coal mining，sinking speed of the surface points is relatively small，more than one peak appears and almost no rapid sinking active phase of traditional caving mining exists.At last，the predicted parameters of probability integral method are inversed based on the measured data of the strip mining and solid filling mining in Huayuan mine.All the study above can provide some reference and guidance for predicting surface subsidence and designing of the coal mining in similar mining area.
    Inversion Analysis of Safety Factor on Shear Strength of Waste Dump Bulk Materials
    ZHANG Mo, WANG Bin, ZHOU Yu-Xin, ZHU Jun-Xing
    2015, 44(05):  171-174. 
    Asbtract ( 984 )   PDF  
    Related Articles | Metrics
    On the basis of preliminary judging the steady state of dump slope，a safety factor is set，the shear strengths of waste dump bulk materials are inversed with the safety factor.With the use of the common Bishop method and Residual thrust method，the nonlinear equation group is built to make the iterative solution.Meanwhile，the shear strengths of waste dump bulk materials are calculated out.Aiming at the actual inversion analysis on dump slope of a large open pit mine in southwest China，it is concluded that:for fine-grained granular rock with more quaternary topsoil，its cohesion c by inversion analysis is smaller than triaxial test by 0.026 MPa，but friction angle φ is bigger by 3.94°；For hard gabbro with coarse grained soil as the main，its cohesion c by inversion analysis is bigger than that at triaxial test by 0.021 MPa，but its friction angle φ is smaller by 4.06°.Although the two kinds of bulk materials have different inversion analysis and experiment results，the inversion analysis results based on the safety factor can better grasp the shear strength parameters of waste dump bulk materials as a whole.This method is superior to the indoor test and field test which are affected by the unevenness and discreteness of bulk materials.At the same time，the shear strength parameters obtained can be used as the basis of dynamic stability analysis in the late dump planning.
    Influence of Rainfall Infiltration of Sandy Slope on Deformation and Stability
    CHENG Chang-Ming, CHEN Xing, TIAN Ming-Jie, PENG Ya-Ting, HUANG Shuai
    2015, 44(05):  175-180. 
    Asbtract ( 908 )   PDF  
    Related Articles | Metrics
    The influence of rainfall infiltration on stability and deformation of sandy slope are studied based on the numerical simulation model.The results show that with the increase of rainfall duration and intensity，slope safety factor tends to decrease.The safety factor decreases with the slope angle and height increase，while it increases with the increase of internal friction angle and cohesion.The height and angle of slope have less effect on the depth of slope sliding，and the slope with large internal friction angle are more likely to happen the shallow slide，while the slope with high cohesion are more likely to happen deep landslide.With the increase of rainfall duration，horizontal displacement at the foot of the slope appears sudden change，and this position is most likely to produce shear sliding.The greater of the shear bearing capacity of the slope，the greater of the safety factor is.However，anti-slide pile with large bearing capacity will deepen the critical slip surface.Safety coefficient of the slope reinforced by anti-slide pile at the bottom of the slope increased by 2%~5% than that at the top of the slope.Thus，the reasonable design strength of the anti-slide pile could increase the slope safety factor without changing the dangerous slip crack surface.
    Copper Recovery from Yimen Copper Smelting Slag
    XIE Xian, YANG Zi-Xuan, TONG Xiong, HOU Kai, LI Ji-Yong
    2015, 44(05):  181-183. 
    Asbtract ( 1044 )   PDF  
    Related Articles | Metrics
    The composition of Yimen copper smelting slag was complex,with Cu grade of 1.83%.Main copper minerals are copper sulfide,accounting for 94.54% of total copper.In order to high efficiently recover copper,mineral processing tests were carried out.The results showed that,at the grinding fineness of the -0.045 mm accounted for 90%,through the process of one roughing-three cleaning-two scavenging,copper concentrate with copper grade of 18.27% and recovery of 84.86%,and silver grade of 76.20 g/t and recovery of 44.06% was obtained separately.The beneficiation process selected is simple,which can better recover the copper,and comprehensively recover the silver.It is the ideal process for copper recovery from the sample.
    Effect of Tailings Consolidating with Slag-Desulfurization Ash-Based Consolidation Agents
    ZHANG Fa-Wen, LI Yao, YU Qian, WANG Kai
    2015, 44(05):  184-190. 
    Asbtract ( 986 )   PDF  
    Related Articles | Metrics
    In order to utilize slag and desulfurization ash,consolidation agent is synthesized using slag and ash as the main raw material,and adding a small amount of limestone and activator.The optimum mass ratio of slag,ash,limestone,activator is 81∶13∶2.5∶3.5.Mortar fluidity and bleeding quantity of tailing cementation slurry,and the unconfined compressive strength after different curing times were tested,taking the two tailings different in property as research object.Experimental results showed that the basic properties of consolidation agent are somehow better than that of 32.5# cement.Mortar fluidity and bleeding quantity of tailing slurry by using consolidation agent were higher than that of 32.5# cement.Increasing consolidation agent dosage and extending curing times would be favorable to raise the unconfined compressive strength.The solidification effect of slag-desulfurization ash-based consolidation agent was significantly better than cement under the same conditions.Unconfined compressive strength of indurations compound with 5% consolidation agent is nearly adding 10% cement.Therefore,the slag-desulfurization ash-based consolidation agent can substitute for 32.5# cement in solidify tailings.The microscopic experimental results indicated that the main reason of raising compressive strength was making cementing material hydration react completely with curing time extending.And gel filled interspace between tailing particles in the hydration reaction of cementing material,which caused the tailings solidification bodies relatively more dense and higher compressive strength. 