河北某磁选铁精矿反浮选提铁降硅试验  

Experiments on Iron Increase and Silicon Reduction by Reverse Flotation for a Magnetic Iron Concentrate in Hebei

作　　者：陶红标[1] 曹学锋[1] 卢建安[1] 张庆鹏[1] 白丁[1] 

机构地区：[1]中南大学资源加工与生物工程学院

出　　处：《金属矿山》2013年第9期64-66,共3页Metal Mine

基　　金：国家高技术研究发展计划(863计划)项目(编号:2013AA064102)

摘　　要：河北某铁矿选矿厂磁选粗精矿粒度较细,单体解离情况较好,但二氧化硅含量较高,采用弱、强磁精选工艺难以剔除。对现场的磁选粗精矿进行了反浮选提铁降硅研究。结果表明,以淀粉+腐殖酸钠(质量比为2∶1)为铁矿物组合抑制剂,OXP+C-1(质量比为5∶1)为脉石矿物组合捕收剂,采用1粗1扫2精、中矿顺序返回流程处理该磁选粗精矿,可获得铁品位为65.17%、回收率为88.14%的铁精矿。Magnetic concentrate from an iron dressing plant in Hebei has good monomer dissociation with fine granu- larity, but contains high content of silica, which is difficult to remove through low or high intensity magnetic separation. The magnetic iron concentrate on site was treated by reverse flotation for iron increase and impurities reducing. The results showed that with starch ＋ sodium humate （ mass ratio of 2：1 ） as combining depressant for iron ores, OXP ＋ C - 1 （ mass ra- tio of 5：1 ） as combining collector for gangues, iron concentrate with Fe grade of 65.17% and Fe recovery of 88.14% was gained by adopting the process of one roughing, one scavenging, two cleanings, middles back to the flowsheet.

关 键 词：磁选铁精矿 淀粉＋腐殖酸钠 OXP＋C-1 提铁降硅 

分 类 号：TD951.1[矿业工程—选矿]