某提铁降杂独立精选厂的工艺设计与生产实践  

Research & Design of the Beneficiation Process for Separate Quality Improvement & Impurities Reduction of Iron Concentrate and Its Application Practice

作　　者：罗立群[1,2] 方勇[3] 陈典助[4] 任瑾荣 杨新跃 

机构地区：[1]武汉理工大学 [2]矿物资源加工与环境湖北省重点实验室 [3]长沙矿冶研究院 [4]长沙有色冶金设计研究院 [5]山西奔腾工矿品贸易公司

出　　处：《金属矿山》2008年第10期48-51,共4页Metal Mine

基　　金：山西省"两区"开发重点项目(编号:2006012079)

摘　　要：山西某地有着为数众多的磁铁矿小型选厂，产出的弱磁选铁精矿铁品位仅61％～58％、SiO2含量达12％～15％，不符合高炉炼铁的精料方针，严重影响销售。为此，在试验研究的基础上，采用反浮选一中矿再磨一弱磁选工艺及可在常温下进行浮选的高效阴离子捕收剂LP-4，结合当地实际情况设计、建设了对这些弱磁选铁精矿集中进行提铁降杂的独立精选厂。生产实践表明，该独立精选厂工艺流程运行稳定，适应性强，可使最终精矿铁品位达到67．2％～66．5％，SiO2含量降至5．2％～5．8％，提铁降杂效果良好。There are a number of small sized magnetite ore concentrators in a region in Shanxi, which produce iron concentrates by low intensity magnetic separation that have an iron grade of only 61% -58% but an SiO2 content as high as 12% - 15% , not conforming to the guideline of good burden preparation for blast furnace iron-making and seriously affecting their sales. Based on the experimental research and in light of the local real conditions, a separate concentrator for their upgrading has been designed and built for a centralized treatment of these iron concentrates, which adopts a process consisting of reverse flotation, middling regrinding and low magnetic separation, and a high efficient anionic collector LP-4 that can be used in normal temperature. Now, this separate concentrator is running stably and has a good adaptability. It is capable to raise the iron grade of the concentrate to 67.2% -66.5% and reduce the Si02 content to 5.2% -5.8%, demonstrating a good effect of quality improvement and impurity reduction.

关 键 词：弱磁选铁精矿 提铁降杂 独立精选厂 反浮选 高效捕收剂LP-4 

分 类 号：TD452[矿业工程—矿山机电] TV731[水利工程—水利水电工程]