摘要
针对梅山铁矿磨矿产品过粉碎现象严重的问题,对入磨矿石的抗压强度进行测定,矿石的抗压强度并不是随着粒度的减小而减小,而是平均粒径降至13 mm左右时矿粒抗压强度最大。研究表明,钢球直径大小直接影响着磨矿产品中新生<74μm和γ<10μm的含量多少,运用段氏球径半理论公式计算一段球磨钢球的最佳直径宜采用100。工业试验表明,一段磨机钢球球径优化后,磨矿产品粒度特性明显改善,<200目产率提高4.67%,合格粒级产率提高7.05%,产品粒度均匀性更好。
According to serious crushing phenomenon of Meishan iron ore grinding products,the compressive strength of grinding ores is determined. The compressive strength of ore does not decrease with the decrease of particle size,but when the particle size drops to about 13 mm of the average particle size,the compressive strength of ore is the largest. The results show that the diameter of steel ball directly affects the content of newborn 〈74 μm and γ 〈10 μm in grinding products,the optimal ball diameter calculation of one stage ball milling with Duan＇s semi-theory formula should be used with 100 mm. Industrial tests show that the size of the grinding product is improved obviously,the output of 〈200 mesh increased by 4. 67%,the yield of qualified grain size is improved by 7. 05%,and the particle size uniformity is better.
作者
张祖刚
吴彩斌
刘安平
衣德强
ZHANG Zugang;WU Caibin;LIU Anping;YI Deqiang(Meishan Metallurgical Development Co., Ltd., Nanjing 210041, Jiangsu, China;Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China)
出处
《宝钢技术》
CAS
2018年第2期53-57,共5页
Baosteel Technology
关键词
抗压强度
球径
粒度特性
compressive strength
ball diameter
grain size characteristics
