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矿冶:2023,32(5):-
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高砷硫铁矿高效分离硫砷试验研究
解晓晨, 郑永兴, 黄宇松, 王振兴, 代哲
(省部共建复杂有色金属资源清洁利用国家重点实验室)
Experimental study on the efficient separation of arsenic and sulfur in iron sulfide minerals containing arsenic
xiexiaochen, zhengyongxing, huangyusong, wangzhenxing, daizhe
(State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology)
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投稿时间:2023-03-24    修订日期:2023-04-01
中文摘要: 本文研究对象为云南某选矿厂铜硫分离后的陶瓷过滤机尾矿,为高砷硫铁矿。化学分析表明,矿样中含硫27.32%,有毒元素砷含量高达4.85%。X射线衍射、电子探针和能谱分析表明,矿样中主要硫化矿物为黄铁矿,其次为磁黄铁矿和毒砂,主要脉石矿物为白云石、石英等,黄铁矿和毒砂基本单体解离。根据高砷硫铁矿性质,采取“先浮后磁”的工艺对高砷硫铁矿进行选别,以大分子有机弱酸盐为主的高效药剂作为毒砂的抑制剂,通过“浮硫抑砷”的浮选流程分离黄铁矿与毒砂,得到的浮选精矿硫品位为48.11%,硫回收率为42.94%,含砷0.35%;然后根据磁黄铁矿具有磁性这一性质将浮选尾矿进入高梯度磁选机进行选别,得到硫品位37.59%,硫回收率25.32%,含砷0.58%的磁选精矿,而磁选尾矿硫品位为15.66%,含砷7.89%,其中砷的回收率高达95.79%,实现了高砷硫铁矿中硫砷元素的高效分离。
中文关键词: 高砷硫铁矿  毒砂  先浮后磁  浮硫抑砷  磁选
Abstract:A ceramic filter tailing, as iron sulfide minerals with a high content of arsenic, which was generated from separation of copper sulfide mineral from the bulk concentrate of copper and iron sulfide minerals in a plant, Yunnan province. The sample contained 27.32% sulfur and 4.85% arsenic. The sample was also detected by XRD, EPMA and EDS in detail. The results showed that the main sulfide mineral is pyrite, followed by pyrrhotite and arsenopyrite, and the main gangue minerals are dolomite and quartz. According to the properties of high-arsenic iron sulfide minerals, the process of “floating-magnetic combination technology” was adopted and meanwhile, the high efficiency reagent which was dominated by macromolecular organic weak acid salt was used as the depressor of arsenopyrite. A flotation concentrate containing 48.11% S and 0.35% As was obtained and the sulfur recovery reached 42.94%, after adopting the flotation process of “float sulfur and inhibit arsenic”. Then, the flotation tailings were put into a high gradient magnetic separator for a further separation based on the magnetic property of pyrrhotite. A magnetic separation concentrate containing 37.59% S and 0.58% As was obtained and the sulfur recovery reached 25.32%, while a magnetic separation tailing containing 15.66% S and 7.89% As was obtained and the arsenic recovery reached 95.79%. Thus, the efficient separation of S-As components in iron sulfide minerals with a high content of arsenic was achieved.
文章编号:20230324004     中图分类号:    文献标志码:
基金项目:国家自然科学基金面上项目(52074139);云南省高层次人才引进计划项(KKS2202152011)
引用文本:
解晓晨,郑永兴,黄宇松,王振兴,代哲.高砷硫铁矿高效分离硫砷试验研究[J].矿冶,2023,32(5):.

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