赞比亚某金矿选矿工艺试验研究

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英文篇名：Experimental Study on Mineral Processing Technology for a Gold Ore from Zambia 作者：李卫 ; 焦芬 ; 王旭 ; 张政权 ; 覃文庆 英文作者：LI Wei;JIAO Fen;WANG Xu;ZHANG Zhengquan;QIN Wenqing;School of Minerals Processing and Bioengineering, Central South University; 关键词：选矿工程 ; 金矿 ; 浮选 ; 重选 英文关键词：mineral dressing;;gold ore;;flotation;;gravity concentration 中文刊名：GJSZ 英文刊名：Precious Metals 机构：中南大学资源加工与生物工程学院; 出版日期：2019-03-20 15:23 出版单位：贵金属 年：2019 期：v.40;No.155 语种：中文; 页：GJSZ201901006 页数：7 CN：01 ISSN：53-1063/TG 分类号：34-40

摘要

根据赞比亚某金矿的矿石特点,对其进行了单一浮选、尼尔森重选和摇床重选-浮选联合3种工艺对比试验,考察了磨矿细度、捕收剂和给矿量等因素对选矿效率的影响。结果表明,摇床重选-浮选联合工艺具有最佳回收效率。在磨矿细度为-0.074 mm占73.65%及优选药剂用量条件下,经过两次摇床重选,重选尾矿再经一粗两扫两精,中矿循序返回闭路流程,可得金品位为66.40 g/t、金回收率为90.52%的综合金精矿,可作为矿山选矿工艺技术依据。
        According to the characteristics of a gold ore from Zambia, a single flotation, Knelson concentration, shaking table-flotation combined process experiments were carried out, the effects of grinding fineness, collector and feeding amount on the beneficiation efficiency were investigated. The results show that the maximum recovery efficiency is obtained by the shaking table-flotation combined process. Under the condition that the grinding fineness is-0.074 mm accounting for 73.65% and the optimum dosage, through a closed-circuit test of two steps of shaking table, one roughing, two cleaning,two scavenging and intermediate mineral sequence returned processing, the Au concentration of the comprehensive gold concentrate is 66.40 g/t and the Au recovery rate is 90.52%. The research results can be used as a technical basis for mine beneficiation process.

引文

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