某难选含硫铁矿磁-浮-磁分选工艺研究

金属矿山 ›› 2026, Vol. 55 ›› Issue (2): 99-105.

某难选含硫铁矿磁-浮-磁分选工艺研究

段语嫣^1,2　宋水祥^1,2　肖舜元^1,2　刘佳燕^1,2　冯　程^1,2

1. 长沙矿山研究院有限责任公司,湖南长沙 410012;2. 湖南省矿山固废综合利用工程技术研究中心,湖南长沙 410012

出版日期:2026-02-15 发布日期:2026-03-02
通讯作者: 宋水祥(1992—),男,工程师,硕士。
作者简介:段语嫣(2001—),女,助理工程师,硕士。

Study on the Magnetic-Flotation-Magnetic Separation Process for a Refractory Iron Ore Containing Sulfide

DUAN Yuyan^1,2　SONG Shuixiang^1,2　XIAO Shunyuan^1,2　LIU Jiayan^1,2　FENG Cheng^1,2

1. Changsha Institute of Mining Research Co. ,Ltd. ,Changsha 410012,China;
2. Hunan Engineering and Technology Research Center for Comprehensive Utilization of Mine Solid Waste,Changsha 410012,China

Online:2026-02-15 Published:2026-03-02

摘要/Abstract

摘要： 为高效开发利用辽宁某难选含硫铁矿石,实现铁、硫资源的综合回收,本研究通过系统的工艺矿物学研
究,明确了该矿石中铁矿物(以磁铁矿为主)与硫矿物(以磁黄铁矿和黄铁矿为主)紧密共生的特性及其对分选的不利
影响。基于此,研究提出了“磁选-浮选-磁选”的联合分选新工艺。通过详细的条件试验,确定了以异丙基黄药为捕
收剂、草酸与硫酸铜组合为活化剂的浮选药剂制度。全流程试验表明:最终可获得产率为30. 12%、铁品位高达
67. 20%、硫含量降至0. 36%的合格铁精矿,同时综合回收了产率为3. 75%、硫品位为32. 30%的硫精矿。该工艺成功
实现了铁与硫的高效分离与综合回收,为解决同类难选含硫铁矿资源的利用难题提供了可靠的技术方案。

关键词: 磁铁矿　磁黄铁矿　阶段分选　硫铁分离　磁-浮-磁联合工艺

Abstract: To efficiently utilize a refractory iron ore containing sulfur from Liaoning and achieve the comprehensive recovery
of iron and sulfur resources,this study conducted a detailed process mineralogy analysis. It revealed that the characteristics
of close symbiosis between iron minerals (mainly magnetite) and sulfur minerals (mainly pyrrhotite and pyrite) in the ore and
their adverse effects on separation were clarified. Accordingly,a novel "magnetic-flotation-magnetic" separation flowsheet was
proposed. Through systematic conditional tests,an effective reagent regime was established,employing isopropyl xanthate as the
collector and a combination of oxalic acid and copper sulfate as activators. The closed-circuit test results demonstrated that a final
iron concentrate with yield of 30. 12%,iron grade of 67. 20%,and sulfur content of 0. 36% could be obtained,alongside
sulfur concentrate with yield of 3. 75% and sulfur grade of 32. 30%. This process successfully achieved the efficient separation
and comprehensive recovery of iron and sulfur,offering a viable technical solution for processing similar refractory iron ore resources
containing sulfur.

Key words: magnetite,pyrrhotite,stage separation,iron-sulfur separation,magnetic-flotation-magnetic combined process

中图分类号:

TD951. 1

段语嫣, 　宋水祥, 　肖舜元, 　刘佳燕, 　冯　程, . 某难选含硫铁矿磁-浮-磁分选工艺研究[J]. 金属矿山, 2026, 55(2): 99-105.

DUAN Yuyan, 　SONG Shuixiang, 　XIAO Shunyuan, 　LIU Jiayan, 　FENG Cheng, . Study on the Magnetic-Flotation-Magnetic Separation Process for a Refractory Iron Ore Containing Sulfide[J]. Metal Mine, 2026, 55(2): 99-105.

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