国外某铁矿石浮选尾矿综合利用工艺试验
Process Test of Comprehensive Utilization of Flotation Tailings of an Iron Ore Abroad
李杰 1陈红兵 2王帅 1刘军 1陈洲1
作者信息
- 1. 中钢集团马鞍山矿山研究总院股份有限公司
- 2. 云南锡业股份有限公司卡房分公司
- 折叠
摘要
国外某铁矿浮选尾矿全铁品位为11.70%,SiO2含量为81.27%,主要含铁矿物为赤褐铁矿,分布率为95.38%,其次为磁铁矿,分布率为2.05%.为了高效综合利用该铁矿浮选尾矿,在研究矿石性质的基础上,对其进行了选矿试验研究.试验采用强磁粗选—磨矿—强磁精选—1粗2扫反浮选联合工艺,在强磁粗选和精选磁场强度均为954.93 kA/m,强磁粗选精矿磨矿细度为-0.076 mm90%,反浮选调整剂NaOH用量1000 g/t,抑制剂淀粉用量500 g/t,捕收剂十二胺用量200 g/t的条件下,最终获得了全铁品位64.98%、铁回收率85.33%的合格铁精矿.
Abstract
The total iron grade of a foreign iron ore flotation tailings is 11.70％,and the SiO2 content is 81.27％.The main iron-bearing mineral is hematite and limonite,with distribution rate of 95.38％,followed by magnetite,with distribution rate of 2.05％.In order to efficiently and comprehensively utilize the flotation tailings of the iron ore,based on the study of ore properties,the beneficiation test is carried out.The com-bined process of high intensity magnetic roughing separation-grinding-high intensity magnetic cleaning sep-aration-1 roughing 2 scavenging reverse flotation is adopted in the test.The qualified iron concentrate with total iron grade of 64.98％ and iron recovery of 85.33％ is finally obtained under the conditions of high inten-sity magnetic roughing separation and cleaning magnetic field strength of 954.93 kA/m,high intensity mag-netic roughing separation concentrate grinding fineness of -0.076 mm90％,dosage of reverse flotation condi-tioning agent NaOH of 1000 g/t,dosage of inhibitor starch of 500 g/t and dosage of collector dodecylamine of 200 g/t.
关键词
尾矿/综合利用/赤铁矿/正交试验Key words
tailings/comprehensive utilization/hematite/orthogonal test引用本文复制引用
出版年
2024
NETL
NSTL
万方数据