某磁选铁精矿浮选柱阳离子反浮选试验  

Cationic Reverse Flotation of a Magnetic Iron Concentrate Using Flotation Column

作　　者：王伟之[1,2] 赵礼兵[1] 陈丽平[1] 张庆峰 

机构地区：[1]河北联合大学矿业工程学院,河北唐山063009 [2]河北省矿业开发与安全技术实验室,河北唐山063009 [3]河北钢铁集团矿业有限公司司家营铁矿,河北唐山063000

出　　处：《金属矿山》2014年第5期87-90,共4页Metal Mine

基　　金：国家国际科技合作专项(编号:2012DFR70320);唐山市科技计划项目(编号:12140208A-19)

摘　　要：冀东某选矿厂磁选铁精矿粒度较细(-0.074 mm占91.60%),铁矿物单体解离度高达94.4%,且在细粒级明显富集。为了进一步提高该精矿铁品位,以现场流程精矿为试样、以微泡逆流接触式浮选柱为分选设备、以GE-609为阳离子反浮选捕收剂,进行了提铁降硅试验。结果表明,在粗选给矿浓度为35%、给矿速度为893 mL/min、GE-609用量为60 g/t、充气量为2.0 L/min、泡沫层高度为30 cm情况下,采用1粗2扫、中矿顺序返回流程处理该试样,可获得铁品位为68.12%、铁回收率为98.88%的铁精矿,尾矿铁品位仅为9.92%,表明微泡逆流接触式浮选柱和阳离子捕收剂GE-609适用于该试样的反浮选提铁降硅。The magnetic iron concentrate （91.60％-0.074 mm） of an iron plant in eastern Hebei province is fine disseminated.Its degree of iron liberation reaches 94.4％,and is obviously enriched in fine fractions.In order to increase the iron grade of the concentrate,iron increase and silicon reduction experiments was carried out with on-site concentrate as the object,micro-bubble countercurrent contacting flotation column as equipment,and GE-609 as the cationic reverse flotation collector.The results showed that iron concentrate with iron grade of 68.12％,recovery of 98.88％ were obtained with pulp density of 35％,feeding speed of 893 mL/min,GE-609 dosage of 60 g/t,inflating volume of 2.0 L/min,foam layer of 30 cm through process of one roughing,two scavenging,middles back to the flow-sheet in turn,and 9.92％ iron in iron tailings.It indicates that it is rational to deal the ore with micro-bubble countercurrent contacting flotation column and cationic collector GE-609.

关 键 词：浮选柱 阳离子捕收剂GE-609 反浮选 提铁降硅 

分 类 号：TD456[矿业工程—矿山机电] TD923.7