湘西地区微细粒级难选菱锰矿浮选试验研究  

Experimental Study on the Flotation of a Micro-grained Refractory Rhodochrosite in Western Hunan Area

作　　者：代典 梁欢[1,2] 何东升 郭志豪 方晓磊 Dai Dian;Liang Huan;He Dongsheng;Guo Zhihao;Fang Xiaolei(Wuhan Institute of Technology,National Engineering and Technology Research Center for Development﹠Utilization of Phosphorus Resources,Wuhan,Hubei,China;Key Laboratory of Rare Mineral Ministry of Land and Resources,Wuhan Hubei,China;Wuhan Institute of Technology,Xingfa School of Mining Engineering,Wuhan,Hubei,China)

机构地区：[1]武汉工程大学,国家磷资源开发利用工程技术研究中心,湖北武汉430073 [2]自然资源部稀土稀有稀散矿产重点实验室,湖北武汉430035 [3]武汉工程大学,兴发矿业学院,湖北武汉430073

出　　处：《矿产综合利用》2020年第4期76-81,共6页Multipurpose Utilization of Mineral Resources

基　　金：国土资源部稀土稀有稀散矿产重点实验室开放基金资助项目(KLRM-KF201905)。

摘　　要：湘西地区菱锰矿呈细粒或微细粒状态嵌布,且脉石繁多结构复杂,属于难选菱锰矿。采用X射线荧光光谱、X射线衍射及MLA等方法对菱锰矿进行了全面的工艺矿物学研究。针对微细粒级难选菱锰矿,以合适的Mn品位和回收率为指标,考察了磨矿细度、pH调整剂用量、抑制剂用量以及捕收剂用量对菱锰矿浮选的影响。试验表明,菱锰矿(Mn品位9.93%)在磨矿细度-0.074 mm 95.66%的条件下,采用"一粗一精一扫"的正浮选试验流程,可获得精矿Mn品位19.04%、Mn回收率88.86%的浮选指标。The rhodochrosite in the western Hunan area is in the form of fine or fine grain and the veinstone is complicated to be embedded,which belongs to the refractory rhodochrosite.A comprehensive process mineralogy study was carried out on a rhodochrosite by X-ray fluorescence spectrum,X-ray diffraction and MLA.Aiming at the micro-grained refractory rhodochrosite,the effects of grinding time,pH adjuster dosage,inhibitor dosage and collector dosage on flotation of rhodochrosite were investigated with appropriate Mn grade and recovery rate.Experiments showed that:grinding fineness-0.074 mm accounted for 95.66%,after the positive flotation simulation closed-circuit test process of one roughing,one cleaning,one scavenging,the concentrate Mn grade was increased from 9.93%to 19.04%,and the Mn recovery rate was 88.86%.

关 键 词：菱锰矿 工艺矿物学 微细粒浮选 

分 类 号：TD951[矿业工程—选矿]