低品位菱镁矿浮选试验研究  

Experimental research on flotation technology for the low grade magnesite

作　　者：朱阳戈[1] 谭欣[1] 闫志刚 郑桂兵[1] 尹琨[1] 魏明安[1] 

机构地区：[1]北京矿冶研究总院矿物加工科学与技术国家重点实验室,北京100160 [2]营口东吉科技(集团)有限公司,115100

出　　处：《轻金属》2014年第2期1-4,共4页Light Metals

基　　金：国家自然科学基金项目(51204019);国家高技术研究发展计划(863)项目(2011AA060101)

摘　　要：针对辽宁某低品位菱镁矿,采用反-正浮选工艺进行了硅钙杂质脱除研究。其中,反浮选作业采用阳离子捕收剂BK428,主要脱除含硅脉石;正浮选作业采用阴离子捕收剂BK420,强化含钙脉石脱除。试验结果表明,采用上述工艺流程与药剂制度可以使MgO品位为43.52%,SiO2含量3.74%和CaO含量2.69%的原矿,获得MgO品位为47.02%的精矿,菱镁矿精矿中SiO2和CaO含量分别降低到0.29%和0.93%,MgO回收率为71.64%。达到了选矿除杂的目的。为综合利用菱镁矿资源打下基础。In this paper, the research of removing impurities by flotation for the low grade magesite with high contents of silicate and calcite in Liaoning province is introduced. In the flotation process, reverse flotation by novel anionic collector BK428 is adopted to remove silicate, and direct flotation by cat- ionic collector BK420 is used to remove calcite. By this ＂reverse -direct flotation＂ process, from the low grade magnesite with MgO content of 43.52%, the grade and recovery of obtained concentrate （calculated by MgO） are 47.02% and 71.64%, at the same time, SiO2 and CaO content are decreased from 3.74% and 2.63% to 0.29 and 0.93 respectively, which achieves the goal of mineral processing and removing impurities and lays a foundation for comprehensive utilization magnesite.

关 键 词：菱镁矿 反浮选 正浮选 捕收剂 

分 类 号：TD923[矿业工程—选矿] TD952