精确化磨矿对产品粒度分布及能耗的影响  

Influence of Accurate Grinding on Product Size Distribution and Energy Consumption

作　　者：刘瑜[1,2] 杨昊[1] 邹春林[1] 吴彩斌[1] 石志中 毛文明 

机构地区：[1]江西理工大学江西省矿业工程重点实验室,江西赣州市341000 [2]长沙矿冶研究院有限公司,湖南长沙410012 [3]柿竹园有色金属有限责任公司,湖南郴州市423037

出　　处：《矿业研究与开发》2015年第7期53-57,共5页Mining Research and Development

基　　金：江西省科技支撑计划项目(20132BBG70016)

摘　　要：针对柿竹园脆性多金属矿磨矿中存在的过粉碎、低效率等问题,在矿石力学特性的基础上,运用精确化磨矿理论准确计算出介质的大小、配比及磨矿工艺参数。与原有磨矿制度相比,精确化磨矿使得二段溢流产品中细度增加了4.05个百分点、过粉碎减少3.32个百分点、易选粒级增加了6.15个百分点,产品质量得到全面改善,使后续钨、钼、铋浮选指标均有不同程度的提高;实现了钢球单耗下降0.12kg/t、磨机电耗下降0.45kW·h/t,节能降耗效果显著。Aimed at the problems of overgrinding and low ef- ficiency during the grinding of brittle polymetallic ore in Shizhuyuan, the size and the ratio of medium, as well as the grinding parameters, were accurately calculated by accurate grinding based on the mechanical characteristics of ore. Comparing with the original grinding system, the fineness was increased by 4.05 percentage point, the overgrinding was de- creased by 3.32 percentage point, and easy selection size fraction was increased by 6.15 percentage point in secondary overflow product by accurate grinding. And the product quality was comprehensively improved, which enhanced the flotation indexes of W, Mo and Bi in various degrees. The ball consumption was reduced by 0.12 kg/t, and the electrical consumption of mill was decreased by 0.45 kW · h/t, which had significant effect of energy saving.

关 键 词：精确化磨矿 磨矿产品质量 节能降耗 合格粒级 过粉碎 

分 类 号：TD921.4[矿业工程—选矿]