降低石墨微细鳞片含量的再磨工艺优化研究  

Optimization of Regrinding Process to Reduce Content of Microfine Flake Graphite in Concentrate

作　　者：龙渊[1,2] 张国旺 郭杰[3] 刘瑜 石立 赵湘[1,2] LONG Yuan;ZHANG Guowang;GUO Jie;LIU Yu;SHI Li;ZHAO Xiang(Changsha Research Institute of Mining and Metallurgy Co Ltd,Changsha 410012,Hunan,China;Hunan Jinmill Technology Co Ltd,Changsha 410012,Hunan,China;MCC International Incorporation Ltd,Beijing 100081,China)

机构地区：[1]长沙矿冶研究院有限责任公司,湖南长沙410012 [2]湖南金磨科技有限责任公司,湖南长沙410012 [3]中冶国际工程集团有限公司,北京100081

出　　处：《矿冶工程》2024年第2期52-55,共4页Mining and Metallurgical Engineering

基　　金：国家重点研发计划(2020YFC1909603)。

摘　　要：对黑龙江某石墨粗精矿进行了立式搅拌磨机再磨试验。以陶瓷球为磨矿介质,研究了磨机转速、介质球直径、磨矿时间等工艺参数对石墨磨矿-浮选效果的影响。结果表明,石墨磨矿的优化工艺参数为:采用慢-快-慢交替的磨机转速,陶瓷介质球直径8~10 mm,磨矿时间5 min,在该优化条件下进行磨矿-浮选开路试验,获得了固定碳含量95.83%、-0.045 mm粒级含量24.51%、大鳞片(+0.15 mm)含量14.27%的石墨精矿。A vertical stirring mill was introduced for regrinding the graphite concentrate from the rougher in a graphite mine of Heilongjiang Province.Using ceramic ball as the grinding medium,the influences of processing parameters,including rotation speed of mill,diameter of medium ball and grinding time,on the grinding and flotation performances of graphite ore were investigated.The graphite ore was beneficiated adopting an open⁃circuit flotation process after it was milled with the optimized grinding parameters including alternating(slow⁃fast⁃slow)rotation speed,medium ball diameter of 8-10 mm and grinding time of 5 min.The as⁃obtained graphite concentrate,with the 24.51%in a size fraction of-0.045 mm,has a fixed carbon content of 95.83%and large⁃flake graphite content of 14.27%.

关 键 词：鳞片石墨 再磨 立式搅拌磨 磨机转速 石墨精矿 

分 类 号：TD97[矿业工程—选矿]