落重试验测定矿石粉碎特性参数

金属矿山 ›› 2014, Vol. 43 ›› Issue (09): 85-89.

落重试验测定矿石粉碎特性参数

王泽红，楚文城，孔令斌，陈超，马琨

东北大学资源与土木工程学院，辽宁沈阳 110819

出版日期:2014-09-15 发布日期:2015-04-15

Comminution Parameters Detection of the Ore by Drop-weight Tests

Wang Zehong，Chu Wencheng，Kong Lingbin，Chen Chao，Ma Kun

College of Resources and Civil Engineering，Northeastern University，Shenyang 110819，China

Online:2014-09-15 Published:2015-04-15

摘要/Abstract

摘要： 为了科学、准确地进行碎磨设备选型，并确定合理的碎磨工艺流程，对国际上较盛行的自磨/半自磨工艺中物料粉碎特性参数的测定方法——JKTech落重试验法进行了系统介绍，在此基础上，采用JK落重试验仪和磨蚀粉碎试验设备，测定了承德某铁矿3个矿样的冲击粉碎参数A和b以及磨蚀粉碎参数T_a。将试验结果与数据库数据比较，可以得出：①3个矿样的粉碎特性十分接近，都属于软-中软矿石。②矿样在破碎能为2.5、1.0 kWh/t时，颗粒的抗冲击破碎能力随颗粒粒度的增大而下降，且破碎能越大颗粒抗冲击破碎的能力下降越显著；当比破碎能为0.25 kWh/t时，颗粒的抗冲击破碎能力随颗粒粒度的增大而上升，即随比破碎能下降，颗粒粒度-t₁₀关系曲线的斜率变小。③试验结果可以成功用于磨机与破碎机处理量和能耗的计算以及自磨/半自磨流程设计和模拟计算。因此，JKTech落重试验所测得的粉碎特性参数不仅可以判断矿石性质，也可作为设备选型和流程确定的依据。

关键词: 落重试验, 粉碎特性参数, 自磨/半自磨

Abstract: In order to make the selection of comminution equipments and process more accurately and reasonably，the popular material comminution properties measured methods in AG/SAG operation at abroad：the JKTech Drop-weight Test method was introduced systemically.The comminution properties that are the impact parameter A and b as well as abrasion parameter T_a in Chengde Iron Ore are determined by using JK Drop-weight Tester and abrasive grinding testing device.By comparing the test results with the data in database，it can be seen that ①the three samples' comminution properties are similar with each other，which meant all the sample belong to the soft and middle-soft ore.②with the crushing energy of 2.5，1.0 kWh/t，the impact resistance decrease with the increase of the particle size.The more the crushing energy is，the more significant the impact resistance decreases.With the specific crushing energy of 0.25 kWh/h，the impact resistance increase with the increase of the particle size.It means that the impact resistance decrease with the specific crushing energy，and the curve slope of t₁₀ & particle size becomes less.③The test results can be successfully applied into calculation of throughput and energy consumption，as well as AG/SAG flow-sheet design and simulation.It indicated that comminution properties by JKTech Drop-Weight Test could not only measure the ore properties，but also lay the foundation for equipment selection and flow-sheet determination.

Key words: Drop-Weight Test, Comminution parameters, AG/SAG

王泽红, 楚文城, 孔令斌, 陈超, 马琨. 落重试验测定矿石粉碎特性参数[J]. 金属矿山, 2014, 43(09): 85-89.

WANG Ze-Hong, CHU Wen-Cheng, KONG Ling-Bin, CHEN Chao, MA Kun. Comminution Parameters Detection of the Ore by Drop-weight Tests[J]. Metal Mine, 2014, 43(09): 85-89.

[1]	张昊, 刘文宝, 刘文刚, 孙文瀚, 佟柯霖, 谢峰. 辽宁鞍本地区某铁矿废石碎磨特性研究[J]. 金属矿山, 2022, 51(03): 93-98.
[2]	王泽红, 周鹏飞, 毛朝勇, 宋亚龙. 本钢歪头山矿石碎磨特性参数研究[J]. 金属矿山, 2018, 47(03): 71-75.
[3]	刘杰, 袁帅, 李艳军, 韩跃新, 刘畅, 杨光. 辽宁某铁矿石碎磨特性研究[J]. 金属矿山, 2017, 46(06): 85-88.
[4]	刘建远. SCSE——表征矿石半自磨可磨度的新指标[J]. 金属矿山, 2016, 45(07): 58-63.
[5]	刘建远. 关于矿石粉碎特性参数及其测定方法[J]. 金属矿山, 2011, 40(10): 9-19.

扫码分享