含云母方解石型萤石矿的浮选柱分选试验研究  

Experimental Research on Flotation Column Separation of Micaceous Calcite-type Fluorite

作　　者：刘忠义 马子龙 刘杰[1,2] 龙飞 Liu Zhongyi;Ma Zilong;Liu Jie;Long Fei(School of Chemical Engineering and Technology,China University of Mining and Technology,Xuzhou,Jiangsu,China;National Engineering Research Center of Coal Preparation and Puri cation,Xuzhou,Jiangsu,China)

机构地区：[1]中国矿业大学化工学院,江苏徐州2221116 [2]国家煤加工与洁净化工程技术研究中心,江苏徐州221116

出　　处：《矿产综合利用》2019年第2期60-64,共5页Multipurpose Utilization of Mineral Resources

基　　金：国家科技支撑计划课题-赤铁矿反浮选尾矿二次分选关键技术研究与工艺系统(2014BAB01B05)

摘　　要：湖南某选矿厂萤石矿嵌布粒度细,云母和方解石含量较高,脉石矿物组成复杂,造成实际生产中粗精矿品位低,扫选回收能力不足,为此,采用旋流-静态微泡浮选柱对该矿石进行了浮选试验研究。试验确定浮选条件为处理量0.40 t/h,粗选药剂用量碳酸钠2000 g/t,水玻璃1200 g/t,油酸140 g/t,扫选油酸用量50 g/t,通过"一粗一扫"浮选连续扩大试验,可获得粗精矿品位77.93%,回收率91.59%,较同期现场生产指标分别提高了3.98%、4.08%,取得了较好的浮选效果。粒度分析结果表明,相较于浮选机,浮选柱对-38μm颗粒回收效果好,分选效率高。The dissemination size of fluorite mine in Hunan is fine, which has the high content of calcite and mica. the complex composition of gangue results in low grade of rough concentrate and insufficient recovery capacity of scavenging in production. Therefore, the flotation tests which adopt the cyclonic-static microbubble flotation column were carried out. The results indicated that it can obtain the most favourable effect in the flotation when the throughput and oleic acid dosage for scavenging is 0.4 t/h, 50 g/t, respectively,and the dosage of rougher was sodium carbonate dosage 2000 g/t, sodium silicate dosage 1200 g/t, oleic acid dosage 140 g/t. Under this favourable flotation conditions, the results showed that fluorite concentrate containing CaF2 77.93%,recovery of 91.59% were obtained by the continuous dressing of one roughing and one scavenging test. Compared with the similar operation conditions of conventional flotation cells, the grade of fluorite concentrate and recovery were increased by 4.08% and 3.98%, individually. The results of particle size analysis showed that the flotation column has better recovery capacity on-38 μm particles, and the separation efficiency is higher than flotation cells.

关 键 词：方解石型萤石 云母 浮选柱 浮选 

分 类 号：TD951[矿业工程—选矿]