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Review for the Current Status of Laterite Nickel Ore Resources and its Treatment Process LI Yan-Jun, YU Hai-Chen, WANG De-Quan, YIN Wen-Xin, BAI Yuan-Sheng Metal Mine    2010, 39 (11): 5-9,15.   Abstract （4911）      PDF（pc） （2028KB）（8921）       Knowledge map    Save The general situation of resources in the world and utilization for nickel laterite ore were summarized and the domestic demands on nickel ores were analyzed. All kinds of processing method and the current advanced technique for laterite nickel ores were elaborated in detail. Related Articles | Metrics

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Discussion on the Present Situation of Research of Flotation Reagent of Lead-zinc Oxide Ore WU Wen-Li Metal Mine    2010, 39 (09): 63-67，70.   Abstract （5576）      PDF（pc） （5762KB）（6192）       Knowledge map    Save This paper briefly discussed the development and application of various flotation reagent of lead-zinc oxide ore. At present, the main developing trend is to develop new and efficient chelating agent, compound reagent and combined reagent based on further study and exploration on the mechanism of flotation reagent of lead-zinc oxide ore. Related Articles | Metrics

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Progress of the Methods of Graphite Purification GE Peng, WANG Hua-Jun, JIE Lin, ZHAO Jing, ZHANG Qiang Metal Mine    2010, 39 (10): 38-43.   Abstract （4483）      PDF（pc） （1215KB）（5155）       Knowledge map    Save A detailed description is given on various methods for graphite purification at home and abroad，mainly including flotation，alkali-acid method，hydrofluoric acid washing approach，chloridizing roasting and purification in high temperature.Based on the systematic exposition of their basic principles，progress conditions，research progresses and practical applications，the comparison of the merits and demerits of these methods have led to a conclusion，which is that the alkali-acid method could still be considered as the best way in graphite purification after being improved. Related Articles | Metrics

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Status of Refractory Iron Mineral Resources of Hebei Province and its Development Suggestions ZHAO Jun-Wei, LI Zhong-Nian, GUO Min, ZHANG Ke-Ren Metal Mine    2010, 39 (11): 10-15.   Abstract （4431）      PDF（pc） （1295KB）（4325）       Knowledge map    Save The status of iron mineral resources in Hebei province was summarized, especially in types, reserve and distribution of ultra low-grade magnetite resources. And the exploitation of Hebei iron mines and the supply and demand situation of iron ores were analyzed. The two kinds of refractory iron mineral resources due to its complicated mining or processing condition were introduced with some significant examples. Then, several developing suggestions for the resources were set forth. Related Articles | Metrics

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Research Status and Development Trend of the Domestic Magnetic Separation Equipment XIA Hong-Feng Metal Mine    2010, 39 (09): 111-114.   Abstract （3759）      PDF（pc） （3912KB）（3939）       Knowledge map    Save The paper introduces the research status of magnetic separation equipment in domestic, and analyzes the structure, separation way and characteristics of magnetic separation equipment. Then, the development trend of domestic new-type magnetic equipment is deeply discussed. It is recommended that the highly effective magnetic separation technology be greatly developed and utilized，specially the highly effective magnetic separation equipment with energy saving. Related Articles | Metrics

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Application of Ventsim 3D Ventilation Simulation System in Metal Mines LIU Ming-Ming, XIE Zhen-Hua, ZHANG Jian-Ye Metal Mine    2010, 39 (10): 120-122.   Abstract （4963）      PDF（pc） （1791KB）（3927）       Knowledge map    Save This paper introduces some problems occurred during the metal mine production process，including 3D simulation of complex mine ventilation system and simulation of high-temperature environment caused by deep mining.Ventsim 3D ventilation simulation system can realize various functions，such as ventilation network resolving，ventilation simulation，thermal simulation and economic simulation.It could meet the requirement of 3D ventilation system management in metal mines.The practice showed that Ventsim 3D ventilation simulation system could meet the requirement of mine e-managing，and eventually achieve a safe，efficient and economic operation. Related Articles | Metrics

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Study and Application of Selective Flocculation in Beneficiation of Fine Iron Ore TANG Xue-Feng, CHEN Wen, YU Yong-Fu, YAN Xiao-Hu Metal Mine    2010, 39 (09): 44-46.   Abstract （5199）      PDF（pc） （3020KB）（3919）       Knowledge map    Save The influence factors for the effect of selective flocculation is analyzed, and the application status of selective flocculation process in fine iron ore dressing is introduced. Then the direction of selective flocculation technology is given. Related Articles | Metrics

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Analysis and Disscussion on the Complex Utilization Technology of Cyanide Tailing WANG Hong-Zhong Metal Mine    2010, 39 (09): 173-176.   Abstract （5253）      PDF（pc） （3914KB）（3725）       Knowledge map    Save The complex exploitation and utilization of gold mine in China was introduced and the disposal status quo of cyanide tailing from arsenical-copper gold concentrate preparation by flotation was presented. The factors that influenced the leach of gold and silver and the leaching mechanism were analyzed. The experiments showed that the leach rates of gold and silver from the cyanide tailings were increased to 82.9% and 61.54% respectively by adding the mixed additive, adopting two-stage roasting and grinding with the addition of leaching aid agent before being treated with cyanide. Meanwhile, the grades of gold and silver were decreased to 0.55 g/t and 30 g/t separately. Related Articles | Metrics

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Experimental Research on Beneficiation of Ferro Sands from Indonesia Beach LONG Yun-Bo, ZHANG Yu-Shu, YAN Wu, DING Ya-Zhuo Metal Mine    2010, 39 (09): 51-53.   Abstract （4476）      PDF（pc） （3034KB）（3680）       Knowledge map    Save Through experiments on ore characteristics and mineral processing of Ferro sands from Indonesia beach, the chemical composition, mineral composition, size distribution and the main iron minerals liberation degree are identified. The results of processing mineralogy test show that the main metallic minerals are titano-magnetite, and a few hematitized magnetite and limonite are coexisted; and it has a good natural liberation degree. For run-of-mine with TFe of 30.52%, vanadium-titanium magnetite concentrate with the yield of 45.0%, TFe grade of 58.04%, and recovery of 86.27% is obtained under grinding fineness of -0.074mm 80.0% by the flow-sheet of one rough low-intensity magnetic separation and one cleaning low-intensity magnetic separation. This research provides a basis for the development and utilization of beach Ferro resources of this type. Related Articles | Metrics

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Recommendations on the Safety Management of Metal and Nonmetal Open-pit Slope LI Jun Metal Mine    2010, 39 (10): 172-175.   Abstract （3301）      PDF（pc） （1189KB）（3541）       Knowledge map    Save In China，metal and nonmetal open-pit mining occupies a huge proportion.But about half of them have been deformed or destroyed.Due to some hazards like high slope and landslides，it has become the big disaster that endangered the mine safety production and the people's lives and property.Low management level and technique of metal and non-metal open pit slope is one of the most important factors that lead to the accidents in recent years.So the slope management is particularly important.According to the problems and trends of metal and nonmetal open pit slope in China，the recommendations on open pit slope management of metal and nonmetal mine for supervision department and mining enterprise are proposed. Related Articles | Metrics

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The Growth Characteristics of Metallic Iron Grains in Depth Reduction of Oolitic Hematite JIA Yan, NI Wen, ZHENG Fei, FENG Jin-Peng, WANG Zhong-Jie, XU Cheng-Yan Metal Mine    2010, 39 (10): 52-56.   Abstract （4296）      PDF（pc） （3277KB）（3522）       Knowledge map    Save Based on the characteristics of some unwieldy oolitic hematite ores, tests on depth reduction-magnetic separation are carried out.The growth characteristics of metallic iron grains in depth reduction of unwieldy oolitic hematite are investigated. And the effects of different experimental conditions, such as reduction temperature, reduction time, binary basicity on the iron grains growth are discussed in detail.The results show that raising the reduction temperature and prolonging the reduction time are beneficial to the iron grains growth, while the over-high binary basicity is bad for the iron grain growth. Related Articles | Metrics

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Discussion on Geological Map Production Method Based on MapGIS NIU Kun, XU Lei, XI Yan-Tao, YU Xue-Tao, YU Shu-Yuan Metal Mine    2010, 39 (09): 87-90.   Abstract （4272）      PDF（pc） （6238KB）（3503）       Knowledge map    Save MapGIS is an intelligent software systems，which is integrated of graphic，image，geology，geography，remote sensing，artificial intelligence，computer scienceUsing MapGIS software，each kind of geological map and topographic map can be easily drawn so as to improve the charting efficiency and reduce the drawing timeTaking the bedrock geological map of Xuzhou city for an example，this paper discussed and analyzed the process and method in drawing of geologic map，and proposed some methods and the principle. Related Articles | Metrics

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Prediction Methods of the Surface Subsidence Induced by Underground Mining MU Wei-Gang, SUN Shi-Guo, FENG Shao-Jie Metal Mine    2010, 39 (10): 10-12,43.   Abstract （4131）      PDF（pc） （3342KB）（3473）       Knowledge map    Save In view of the research progress on current rock mass movement，the advantages and disadvantages of 7 predictions of the surface movement distortion is discussedCombining with some cases of coal mining project，FLAC3D numerical analysis method is used to forecast the surface movement rules and the distortion tendencyAnd its data are processed with the excel tableHence，its trend，the typical curve of dip section and the expression of rock mass migration parameter are determined，thus providing a reference for the prediction of the surface migration and the distortion in the actual project Related Articles | Metrics

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Recycling Utilization of the Cooper Tailing Resources in China GUAN Hong-Yan, XU Li-Hua, ZHOU Bing, LI Xing-Wang, REN Ling, DI Wei Metal Mine    2010, 39 (10): 185-188.   Abstract （3742）      PDF（pc） （1218KB）（3433）       Knowledge map    Save With the depletion of high grade copper mineral resources，it has become very urgent to develop the discarded copper tailings.In this paper，the status of copper tailings in our country is described briefly and the recent advances on the processing way of copper tailings are introduced.Based on the analysis for the main developing technical routes of the copper tailings resource，the inorganic wet chemical beneficiation process which is the way to separate and enrich the valuable metal ions at different acidity efficiently from the tailings as the most promising way has been proposed. Related Articles | Metrics

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The Synthesis of the Ammonium Di-iso-butyl Dithiophosphate and its Flotation Effect ZHU Yi-Min Metal Mine    2010, 39 (09): 68-70.   Abstract （4279）      PDF（pc） （3069KB）（3159）       Knowledge map    Save Ammonium di-iso-butyl dithiophosphate and ammonium di-n-butyl dithiophosphate is isobutyl isomers, they have the same molecular formula, only alkyl isomers. According to the principle of isomeric chemistry, when organic substances have the same molecular formula and the same functional groups, their chemical and physical properties are very similar. The flotation performance of flotation reagents are fully affected by its physical and chemical properties, so the flotation performance of isomers should be very similar. Therefore, some sort of flotation reagent's isomers with features of wide source, low price, easy to be synthetic, and low toxicity can always filter out the better flotation reagents. In this paper, by synthetizing the isomer of ammonium di-n-butyl dithiophosphate -ammonium di-iso-butyl dithiophosphate and by using these two isomers respectively as collector to make a flotation for lead-zinc ore. The test results show that the argument above mentioned is correct. Related Articles | Metrics

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Mechanism of Incrustation and Anti-incrustation during Acidic Leaching Process YAN Jia-Long, WU Ai-Xiang, WANG Hong-Jiang, WANG Yi-Ming, LIU Wei-Fang, HUANG Ming-Qing Metal Mine    2010, 39 (10): 68-71，150.   Abstract （3939）      PDF（pc） （5958KB）（3117）       Knowledge map    Save During the process of heap leaching, incrustation is easy to precipitate on the surface of ore, which leads to decrease of the permeability of leaching yard and finally affects the leaching rate.Taking the acid heap leaching technique of a high-slurry high-alkali ore in Yunnan as background, the SEM scanning and X-ray diffraction analysis on the leaching ores of incrustation showed that the  composition of incrustation was mainly CaSO4, that is because Ca2+ was continuously generated, which absorbed the SO42+ in leaching process.By adding different anti-incrustation agent in experiments, and with the help of scanning electron microscopy, the inhibiting effect of the anti incrustation agent on the incrustation of ores was verified.The mechanism of the anti-incrustation agent was mainly chelate effect and crystal distortion effect. Related Articles | Metrics

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The Influence of Depressurized and Bolt support to Tunnel Stability in High Stress Area WANG Wen-Jie Metal Mine    2010, 39 (10): 1-5.   Abstract （4206）      PDF（pc） （1293KB）（3114）       Knowledge map    Save The influences of the variation of bolt space on the tunnel deformation and the bolt stress under different depressurized rate are analyzed with FLAC3D The tunnel deformation damage with the pressure relief mining under the bolting support in Chambishi copper mine of Zambia and that with the anchor bolt support in Jinshandian iron mine of Wusteel are comparedThe theoretical analysis and the project cases show that the pressure relief can effectively control the tunnel deformation levelAnd the bolt support does not mean to control the tunnel distortion but coordinate the tunnel distortion of around rock massTherefore，in the high ground pressure area，the primarily work is to control the ground pressureAlso，together with effective support method and parameters，the stability of the tunnel deformation can be maintained well Related Articles | Metrics

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Study on the Ore Properties of High Phosphorus Oolitic Hematite in Western HuBei WEI Dong Metal Mine    2010, 39 (10): 61-64.   Abstract （4007）      PDF（pc） （2270KB）（3079）       Knowledge map    Save This paper describes the mineral composition and structure of the Ningxiang type  high-phosphorus Oolitic hematite in western Hubei, and emphatically introduces the occurrence of main minerals including Hematite, Limonite, Apatite, Oolitic chlorite, Quartz etc.and the embedment features of the target minerals, such as hematite and phosphate.Then, and the occurrence of phosphorus is analyzed, and the approach on the Iron increase and phosphate reduction and the related main difficulties are summarized from the aspects of process mineralogy. Related Articles | Metrics

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Numerical Analysis Computation of Rock Mass Crustal Stress XU You-Ping, LIN Bai-Quan, ZHANG Zhi-Yu, ZHU Chuan-Jie, LIU Yang Metal Mine    2010, 39 (09): 22-25.   Abstract （4406）      PDF（pc） （5104KB）（3076）       Knowledge map    Save Through the measurement and analysis of samples in the second mining of Xitieshan, Geermu in Qinghai province and its surrounding regions, the three-dimensional finite element analysis method with ABAQUS is adopted to inversely simulate the ground stress of mine area, and the stress state and its distribution regularities are quantitatively or qualitatively determined, including its size, direction, and its distribution. It is achieved that maximum principal stress value is 8.35MPa ~ 12.80 MPa at the 2822 level of mining with the average NW and NE direction. And its minimum horizontal principal stress value is 4.02 ~ 6.15 MPa. The ratio of the principal stress and the vertical principal stress is between 1.24 ~ 2.46 . And a reasonable and effective proposal is given for the next phase of the work. Related Articles | Metrics

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Investigation on Wavelet Denoising with Deformation Monitoring Data of Slopes MAO Ya-Chun, JIA Wei-Wei, SHA Cheng-Man, WANG 恩De, YANG Dong-Mei Metal Mine    2010, 39 (09): 137-142，169.   Abstract （3738）      PDF（pc） （7259KB）（3051）       Knowledge map    Save There inevitably exists noise in observation data obtained in deformation monitoring. How to extract diagnostic information from noise data sequence and improve deformation monitoring precision is the critical technology among the deformation monitoring system. This paper applies the wavelet theory method to study the denoise effect with the monitoring data, which mainly focuses on studies of the influence of the denoise method (algorism), wavelet base function and threshold value. The data processed by hard threshold value is rougher than that by soft threshold value. And the soft threshold value has a better effect. The threshold value and wavelet base function have an important influence. It achieves a good effect by forced denoise, and the select of reconstruction scale also has an important influence on filtering. Related Articles | Metrics