遵义高铁硫低品位碳酸锰矿石选别试验  

Beneficiation of a Low-grade Manganese Carbonate Ore with High Iron and Sulfur in Zunyi

作　　者：邓强[1,2] 陈文祥[1,2] 黄苑龄[1,2] 王劲松[3] 陈宁可 

机构地区：[1]贵州省贵金属矿产资源综合利用工程技术研究中心,贵州贵阳550018 [2]贵州省地质矿产中心实验室,贵州贵阳550018 [3]贵州省地矿局102地质大队,贵州遵义563003

出　　处：《金属矿山》2017年第7期82-88,共7页Metal Mine

基　　金：贵州省科技计划项目(编号:黔科合SY字[2015]3003号)

摘　　要：遵义高铁硫低品位碳酸锰矿石直接浸出存在处理量大、成本高、工艺复杂等问题。为解决该问题,在工艺矿物学研究基础上进行了选矿试验。研究表明,对于碳酸锰占总锰的93.45%,铁硫主要以黄铁矿形式存在、各主要矿物嵌布关系密切的矿石,在磨矿细度为-0.074 mm占85%的情况下采用强磁选—强磁选精矿再磨(-0.037 mm占65%)—反浮选—强磁选尾矿螺旋溜槽+摇床重选选硫流程处理,获得了Mn品位为26.01%、含Fe7.31%、含S0.76%、Mn回收率为91.85%的锰精矿,以及S品位为38.47%、S回收率为72.54%的综合硫精矿,锰精矿S、Fe剔出率分别达92.30%和59.37%。矿石抛出产率为42.43%的尾矿和9.03%的硫精矿后,锰品位从13.75%提高至26.01%,这为后续浸锰创造了良好的条件。可减少后续电解金属锰的酸耗、氨耗及渣的处理费用等,为企业创造显著的经济效益。There are many difficulties such as large amount of processing,high cost and complicated process in the directleaching of Low-Grade Manganese Carbonate ore with high iron sulfur in Zunyi.In order to solve these problems,the mineralprocessing experiment was carried out on the basis of process mineralogy.Research shows that,93.45% of total manganese ismanganese carbonate,iron sulfur mainly exists in the form of pyrite,the main mineral dissemination is closely related to ore.Under the grinding fineness of 85% passing 0.074 mm,and by the process of high intensity magnetic separation-regrinding ofhigh intensity magnetic separation concentrate（the grinding fineness of 65% passing 0.037 mm）-reverse flotation-sulfur gravi-ty concentration by the spiral chute and tabling from magnetic separation tailings,final manganese concentrate with Mn grade of 26.01% and Mn recovery of 91.85%,Fe grade of 7.31%,S grade of 0.76%,and sulfur concentrate with S grade of 38.47% and S recovery of 72.54% were obtained separately.The removal rate of S and Fe from manganese concentrate was 92.30% and 59.37% respectively.After the discarding rate 42.43% of tailings and 9.03% of sulfur concentrate,the manganese gradeincreased from 13.75% to 26.01%,which created favorable conditions for subsequent leaching of manganese.This process canreduce the acid consumption of the electrolytic manganese metal,the ammonia consumption,the burden of the combined press,the processing cost of the slag,etc.and achieve significant economic benefit for enterprises.

关 键 词：高铁硫 低品位碳酸锰矿石 SLon强磁选机 反浮选 重选 

分 类 号：TD924.11[矿业工程—选矿] TD923.7