某难选高硫铁矿选铁降硫试验研究  

Test study on desulfuration and iron recovery of a refractory high-sulfurous iron ore

作　　者：邱廷省[1] 余雄[1] 邱仙辉[1] 王旭[1,2] 吴承优 

机构地区：[1]江西理工大学资源与环境工程学院,江西赣州341000 [2]巴彦淖尔西部铜业有限公司,内蒙古巴彦淖尔015000

出　　处：《矿山机械》2015年第9期96-100,共5页Mining & Processing Equipment

基　　金：江西省科技支撑计划项目(2011AA061001)

摘　　要：某高硫铁矿中磁黄铁矿与磁铁矿嵌布关系复杂,含硫的磁黄铁矿嵌布粒度细,难以实现磁铁矿单体解离。试验研究表明,在磨矿细度-0.074 mm占65%条件下进行弱磁选,磁性产品再磨至-0.045 mm占90%后,以稀硫酸为活化剂,丁基黄药和Q-319组合为捕收剂,经一粗三精一扫的反浮选脱硫工艺,铁粗精矿再经二段弱磁选分离,最终获得含铁64.28%、含硫0.42%、铁回收率为53.62%的合格铁精矿,脱硫率达到了90%。该工艺流程及药剂制度对具有类似矿石性质的硫铁矿脱硫应用具有一定的推广价值。Pyrrhotite was complicatedly disseminated with magnetite in a high-sulfurous iron ore, sulfur- containing pyrrhotite had fine disseminated grains, so it was difficult to achieve monomer dissociation of magnetite. Test study showed： lo.w-intensity magnetic separation was conducted at the grinding fineness 65% of-0.074mm, after the magnetic products were reground to 90% of-0.045mm, dilute sulphuric acid was taken as the activator, combination of butyl xanthate and Q-319 as the collector, reverse flotation and desulfuration process involving one roughing, three cleaning and one scavenging was conducted; and then, two-stage low- intensity magnetic separation of coarse iron concentrate was carded out, the iron concentrate with Fe grade of 64.28%, S grade of 0.42% and iron recovery of 53.62% was achieved, desulfuration ratio reached 90%. The process flow and reagent system possessed some spread value for desulfuration of similar sulfur-containing iron ore.

关 键 词：高硫铁矿 磁选 再磨 反浮选 脱硫 

分 类 号：TD951[矿业工程—选矿]