某鞍山式贫赤铁矿石选矿试验  

Tests on Beneficiation of an Anshan-type Low-grade Hematite Ore

作　　者：高淑玲[1] 魏德洲[1] 崔宝玉[1] 刘文刚[1] 张瑞洋[1] 

机构地区：[1]东北大学资源与土木工程学院

出　　处：《金属矿山》2011年第8期72-75,85,共5页Metal Mine

摘　　要：为了给某鞍山式贫赤铁矿石的开发利用提供依据,对该矿石进行了磨矿钢球制度优化和选别工艺试验研究。结果表明:对于试验所用160 mm×180 mm球磨机,以直径为15、20和25 mm的3种钢球(质量比依次为24%、36%、40%)作为磨矿介质,可为后续分选提供泥化程度较轻的磨矿产品。在该钢球制度下,将矿石磨至-0.071 mm占75%,采用分级—重选—磁选—反浮选工艺流程进行分选,可获得铁品位和铁回收率分别为66.69%和76.22%的综合铁精矿。In order to provide a basis for development and utilization of a poor Anshan-type hematite ore,the optimization of the steel ball system of grinding and the concentration tests were carried out.The results showed that with the ball mill of 160 mm×180 mm,the products with slight sliming in grinding process was supplied for the latter beneficiation when the ball diameters were 15,20 and 25 mm（its mass ratio are 24%,36%,40% respectively）.When the ore was ground to the size of 75%-0.071 mm under the steel ball system of grinding,a combined concentrate with iron grade and recovery of 66.69% and 76.22% separately was obtained through the beneficiation flow-sheet of classification-gravity concentration-magnetic separation-reverse flotation.

关 键 词：鞍山式贫赤铁矿石 分级 重选 磁选 反浮选 磨矿钢球制度 

分 类 号：TD951.1[矿业工程—选矿]