重选-浮选联合工艺保护大鳞片石墨技术研究  

Study on the Technology of Protecting Large Flake Graphite by Gravity Separation-Flotation Combined Process

作　　者：陈慧杰 于阳辉[1] 潘双双 崔波 黄建树 Chen Huijie;Yu Yanghui;Pan Shuangshuang;Cui Bo;Huang Jianshu(Suzhou Sinoma Design and Research Institute of Non-metallic Minerals Industry Co.,Ltd.,Suzhou,Jiangsu 215151)

机构地区：[1]苏州中材非金属矿工业设计研究院有限公司,江苏苏州215151

出　　处：《非金属矿》2025年第1期46-49,共4页Non-Metallic Mines

基　　金：“十四五”国家重点研发计划项目(2021YFC2902901)。

摘　　要：为了预先分离、富集破碎粒级中已经单体解离的大鳞片石墨,试验通过重力分级技术预富集+30目(0.50 mm)大鳞片石墨。采用重选-浮选联合分选工艺保护大鳞片石墨。联合分选流程获得石墨精矿固定碳含量为94.93%,回收率为95.25%,石墨精矿中+100目(0.15 mm)大鳞片石墨产率占比64.82%,其中+35目大鳞片产率占比16.56%。与传统磨浮工艺相比,石墨精矿中+100目大鳞片石墨产率占比提高13.16百分点,+35目大鳞片产率占比提高8.94百分点。重选-浮选联合工艺对保护大鳞片石墨尤其是+35目的超大鳞片石墨效果显著。In order to pre-separate and enrich the large flake graphite that has been liberated in the crushed product of each grades,the gravity classification technology was used to pre-concentrate+30 mesh large flake graphite.The gravity separation-flotation combined separation process was used to protect large flake graphite.The fixed carbon content of graphite concentrate obtained by the combined separation process was 94.93%,and the recovery rate was 95.25%.The yield of+100 mesh(0.15 mm)large flake graphite in graphite concentrate accounted for 64.82%,of which+35 mesh(0.425 mm)large flake yield accounted for 16.56 percentage.Compared with the traditional grinding and flotation process,the yield of+100 mesh large flake graphite in graphite concentrate increased by 13.16 perentage,and the yield of+35 mesh large flake increased by 8.94 percentage.The combined process of gravity separation-flotation has a significant effect on protecting large flake graphite,especially+35 mesh super-large flake graphite.

关 键 词：石墨 大鳞片 重力分级 浮选 

分 类 号：TD97[矿业工程—选矿]