河南省某石英-重晶石型萤石矿选矿试验研究  

Experimental Research on Processing of a Quartz-barite Fluorite Ore in Henan Province

作　　者：宋春光[1] 岳铁兵[2,3] 张传祥[1] 李文军[2,3] 吕良[2,3] 刘磊[2,3] 

机构地区：[1]河南理工大学化学化工学院,河南焦作454000 [2]中国地质科学院郑州矿产综合利用研究所,河南郑州450006 [3]国家非金属矿资源综合利用工程技术研究中心,河南郑州450006

出　　处：《矿产保护与利用》2017年第2期75-80,共6页Conservation and Utilization of Mineral Resources

基　　金：国土资源公益性行业科研专项经费项目(201311023)

摘　　要：河南省某石英-重晶石型萤石矿,萤石嵌布粒度粗细不均,粗粒多与石英、重晶石紧密共生,部分细粒被石英、长石包裹,为了合理开发利用该萤石矿,以脱硅、除重晶石为重点,对其进行了选矿试验研究。结果表明:以KDP为重晶石抑制剂,采用"弱碱性条件粗选脱硅—弱酸性条件精选除重晶石"的方法和"两段磨矿—两段粗选—一次扫选—七次精选,中矿顺序返回"的选别工艺流程,可获得产率为35.92%、CaF_2品位为97.78%、CaF_2回收率为79.08%的萤石精矿,其中BaSO_4含量为0.38%,SiO_2含量为0.60%。"两段磨矿—两段粗选"闭路与常规闭路(一段磨矿、一段粗选)相比,能够在萤石回收率基本不变的情况下,得到更高品级的萤石精矿。The fluorite in a quartz - barite fluorite ore from Henan province has uneven dissemina-tion sizes. Most of the coarse - grained fluorite particles are closely associated with quartz and bar-ite ,and part of the fined - grained fluorite particles are wrapped by quartz and feldspar. In order to rationally exploit this fluorite ore, an experimental research on removing silicate and barite were conducted. The results showed that the fluorite concentrates with a yield of 35. 92%, CaF2 grade of 97.78% and CaF2 recovery of 79. 08% could be obtained by adopting the method of roughing in weak basic environment to desilicification, cleaning in weak acidic environment to remove barite’, and the process of u two - stage grinding, two - stage roughing, one scavenging, seven - stage cleaning and the middlings returning in order’,with using KDP as the inhibitor of barite. The con-tents of Si02 and BaS04 in concentrate were 0. 60% and 0. 38% , respectively. Compared with the conventional closed circuit （one - stage grinding, one - stage roughing） , a higher grade of fluorite could be achieved with barely changed recovery.

关 键 词：萤石 石英 重晶石 两段磨矿 浮选分离 

分 类 号：TD971.5[矿业工程—选矿]