高压辊磨对某铜矿浮选指标影响的研究  

Research of HPGR Influence on a Copper Mine Flotation

作　　者：余玮[1] YU Wei(Dexing Copper Mine,Jiangxi Copper Co.,Ltd.)

机构地区：[1]江西铜业股份有限公司德兴铜矿

出　　处：《现代矿业》2024年第4期140-143,共4页Modern Mining

摘　　要：为了研究高压辊磨破碎对国内某低品位铜矿石后续浮选指标的影响,采用单因素分析方法进行了高压辊磨破碎试验、浮选优化条件试验和浮选开路对比试验。结果表明,在磨矿细度-0.074 mm占65%,粗选氧化钙用量1000 g/t、MAC-12用量20 g/t、丁基黄药用量10 g/t,扫选MAC-12用量10 g/t、丁基黄药用量5 g/t条件下,经1粗1扫浮选流程,常规破碎产品浮选可获得铜、硫品位分别为4.31%和22.46%,铜、硫回收率分别为74.382%和79.053%的粗精矿;辊压产品浮选粗精矿铜、硫品位分别为4.76%和23.06%,铜、硫回收率分别为88.137%和87.082%。铜、硫品位分别提高0.45和0.60个百分点,铜、硫回收率分别提高13.755和8.029个百分点。由此可知,通过高压辊磨破碎作业,可提高该铜矿石浮选精矿的铜、硫品位和回收率。In order to study the influence of subsequent flotation indexes on a low-grade copper ore in China by high pressure grinding roller,single factor analysis method was used to carry out high pressure grinding roller test,flotation optimization condition test and flotation open circuit comparison test.The results show that under the conditions of grinding fineness of 65%passing-0.074 mm,calcium oxide dosage of 1000 g/t,MAC-12 dosage of 20 g/t,butyl xanthate dosage of 10 g/t,MAC-12 dosage of 10 g/t,butyl xanthate dosage of 5 g/t,one roughing and one scavenging flotation process,the coarse concentrate with cop-per and sulfur grade of 4.31%and 22.46%respectively and copper and sulfur recovery of 74.382%and 79.053%respectively can be obtained by conventional crushing product flotation.The copper and sulfur grades of the rough concentrate of the flotation of the high pressure grinding roller product are 4.76%and 23.06%,respectively,and the copper and sulfur recovery rates are 88.137%and 87.082%,respectively.The grade of copper and sulfur increased by 0.45 and 0.6 percentage points respectively,and the recovery rate of copper and sulfur increased by 13.755 and 8.029 percentage points respectively.It can be seen that the copper and sulfur grade and recovery rate of the copper ore can be improved by high pressure grinding roller operation.

关 键 词：高压辊磨 铜硫浮选 选择性解离 

分 类 号：TD952[矿业工程—选矿] TD923