甘肃某细鳞片石墨矿选矿试验研究  

Experimentalresearch on beneficiation of fine-flake graphite ore in Gansu

作　　者：郑仁基 高惠民[1,2] 冯晓菲[1] 岑对对[1] 任子杰[1] 

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]矿物资源加工与环境湖北省重点实验室,湖北武汉430070

出　　处：《中国矿业》2016年第1期125-130,共6页China Mining Magazine

摘　　要：甘肃某石墨矿属于鳞片石墨矿石,原矿固定碳含量较低,为4.48%,石墨鳞片较小。对该地区细鳞片石墨矿进行选矿试验研究,得出适宜的粗选条件为:粗磨磨矿细度为-0.074mm占63.52%、浮选浓度为27%、煤油用量为640g/t、2#油用量为110g/t、生石灰用量为2500g/t(即矿浆pH=9),粗精矿采用五次再磨六次精选流程进行开路试验、闭路试验,最终获得石墨精矿固定碳含量为95.70%,回收率为71.78%的选别指标,为该地区石墨资源的开发利用提供了技术依据。The graphite ore from Gansu belongs to flake graphite ore,with low fixed carbon content of 4.48% and the flake of graphite is small. A beneficiation test of graphite ore from local area was studied and concluded the best rougher flotation conditions： fineness of rougher grinding accounted for 63. 52% of --0. 074mm, flotation concentration is 27 %, the dosage of kerosene is 640g/t, the dosage of alpha-terpineol is 110g/t and the dosage of quicklime is 2500g/t（pH= 9）. An open and closed trial was conducted by five- times-regrinding and six-times-cleaning on the basic of the best rougher flotation conditions. Finally,the flow can obtain the graphite concentrate with the fixed carbon content of 95. 70% and the recovery rate of 71.78%,providing a technical basis for explosion of graphite resources in the local.

关 键 词：鳞片石墨 磨矿 浮选 中矿处理 

分 类 号：TD97[矿业工程—选矿]