鑫源矿业黄金尾矿分离长石试验研究

发布时间：2018-05-07 08:38

本文选题：尾矿 + 长石　；参考：《辽宁工程技术大学》2015年硕士论文

【摘要】：尾矿是矿业生产过程中对环境造成污染的重要来源,尾矿的综合利用受到国内外的重视。本论文对辽宁鑫源矿业黄金尾矿进行了工艺矿物学研究,得知尾矿主要矿物为长石、石英,脉石矿物包含云母、黄铁矿、黄铜矿、磁铁矿等。通过磨矿方式对比试验,探讨了钢球磨矿和钢棒磨矿两种磨矿方式下两者的磨矿效率,并通过流程试验确定了磨矿时间为2.5min,-0.074mm占55.59%时为最佳。在此基础上,本论文进行了实验室选矿试验研究,得出较满意的试验结果,为企业尾矿利用提供一定的理论依据。实验室选矿试验对该尾矿进行了选择性磨矿、脱泥、云母反浮选、浮磁除铁、长石和石英浮选分离联合工艺流程,在确定球磨磨矿制度后,采用Φ150 mm水力旋流器进行脱泥试验,底流进行云母反浮选试验,得到长石浮选精矿铁含量为1.51%。并通过“浮-磁”联合除铁工艺,最终磁选精矿铁含量为0.15%,除铁效果较好。长石和石英的浮选分离试验在酸性条件下进行,采用配比为1：4的阴阳离子混合捕收剂,经一次选别得到产率为35.56%的长石精矿,其中K_20含量为8.86%,Na_2O含量为2.83%,钾钠含量为11.69%。为提高尾矿的利用率,进行了扫选试验,可得到产率为42.33%的长石精矿,其中K_20含量为8.64%,Na_20含量为2.71%,钾钠含量为11.35%,铁含量为0.15%,并对长石精矿进行了烧白试验,产品烧白结果为66.42,满足部分行业对长石产品的要求。
[Abstract]:Tailings are an important source of environmental pollution in the mining production process, and the comprehensive utilization of tailings has been paid attention to at home and abroad. In this paper, the technological mineralogy of gold tailings of Xinyuan mining industry in Liaoning Province is studied. It is found that the main minerals of the tailings are feldspar, quartz, gangue minerals including mica, pyrite, chalcopyrite, magnetite and so on. The grinding efficiency of steel ball grinding and steel bar grinding is discussed by contrast test of grinding methods, and the best grinding time is found to be 2.5 min-0.074 mm to 55.59 mm by flow test. On this basis, this paper has carried on the laboratory mineral processing experiment research, obtains the satisfied test result, provides certain theoretical basis for the enterprise tailings utilization. The combined process of selective grinding, desliming, mica reverse flotation, floating magnetic iron removal, feldspar and quartz flotation separation was carried out on the tailings in laboratory. After determining the ball mill grinding system, a 桅 150mm hydrocyclone was used for desliming test. The iron content of feldspar flotation concentrate is 1.5 1. The final iron content of magnetic concentrate is 0.15, and the effect of iron removal is better. The flotation separation test of feldspar and quartz was carried out under acidic conditions. The feldspar concentrate with a yield of 35.56% was obtained by single separation with a mixture collector of anion and anion at 1:4. The content of K 20 was 8.86% and the content of Na 2O was 2.83%, and the content of potassium and sodium was 11.69%. In order to improve the utilization rate of tailings, the feldspar concentrate with a yield of 42.33% was obtained, in which the content of K20 was 8.64 and the content of Na20 was 2.71, the content of potassium and sodium was 11.35 and the content of iron was 0.15.The calcination test of feldspar concentrate was carried out. The result of burning is 66.42, which meets the requirements of some industries for feldspar products.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD926.4;TD97

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