某提铁降杂独立精选厂的工艺设计与生产实践

金属矿山 ›› 2008, Vol. 38 ›› Issue (10): 48-51.

某提铁降杂独立精选厂的工艺设计与生产实践

罗立群^{1, 2}，方勇³，陈典助⁴，任瑾荣⁵，杨新跃⁵

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

收稿日期:2008-08-10 出版日期:2008-10-15 发布日期:2011-07-13
基金资助:
山西省“两区”开发重点项目（编号：2006012079）。

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

Luo Liqun^1,2，Fang Yong³，Chen Dianzh^u4，Ren Jinrong⁵，Yang Xinyue⁵

1.Wuhan University of Technology；2.Mineral Resources Processing and Environment Laboratory of Hubei；3.Changsha Research Institute of Mining and Metallurgy；4.Changsha Engineering & Research Institute of Nonferrous Metallurgy；5.Industry and Mining Product Trading Company of Shanxi

Received:2008-08-10 Online:2008-10-15 Published:2011-07-13

摘要/Abstract

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—中矿再磨—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。

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

Abstract: 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 SiO₂ content to 5.2%～5.8%, demonstrating a good effect of quality improvement and impurity reduction.

Key words: Iron concentrates of low intensity magnetic separation, Quality improvement and impurities reduction, Separate upgrading concentrator, Reverse flotastion, High efficient collector LP-4

罗立群, 方勇, 陈典助, 任瑾荣, 杨新跃. 某提铁降杂独立精选厂的工艺设计与生产实践[J]. 金属矿山, 2008, 38(10): 48-51.

LUO Li-Qun, FANG Yong, CHEN Dian-Zhu, REN Jin-Rong, YANG Xin-Yue. Research & Design of the Beneficiation Process for Separate Quality Improvement & Impurities Reduction of Iron Concentrate and Its Application Practice[J]. Metal Mine, 2008, 38(10): 48-51.

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