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Recovery of Gold from Gravity Tailings by Flotation

机译：通过浮选从重力尾矿中回收黄金

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摘要

The purpose of this study was to investigate the effectiveness of froth flotation for the recovery of gold from the gravity tailing stream of the former Lihir Gold Limited (LGL) operation in Ballarat. The P8o of the tailings was determined by screen analysis as l mm, with test work conducted on as received material along with samples ground to P8o sizes of 47, 78 and 134 microns. Laboratory scale batch flotation tests were conducted at both natural and elevated pH to investigate the impact of pyrite depression on gold recovery. Results indicated that although an increase in grade from approximately 0.7 g/t to 3 g/t was achievable at a natural pH and a P8o of 134 micron, gold recovery was low at just 35 per cent. Finer grind sizes were found to have an adverse effect on both grade and recovery. Future efforts will be focused on the sub 310 micron size fraction of the tailings, which was revealed to contain approximately 85 per cent of the available gold and may be amenable to cyanidation or ultra-fine gravity treatment.
机译：这项研究的目的是调查泡沫浮选法从巴拉瑞特前利希尔黄金有限公司（LGL）运营的重力尾矿流中回收金的有效性。尾矿的P80通过筛分分析确定为1毫米，并在测试工作中作为接收到的材料以及研磨成47、78和134微米P80尺寸的样品进行测试。在自然和升高的pH值下进行了实验室规模的浮选试验，以研究黄铁矿压降对金回收的影响。结果表明，尽管在自然pH和P80为134微米时可将品位从约0.7 g / t提高到3 g / t，但金的回收率很低，仅为35％。发现较小的研磨尺寸对等级和回收率都有不利影响。未来的工作将集中在尾矿的310微米以下的小部分上，该尾矿被发现含有约85％的可用金，并且可能适于氰化或超细重力处理。

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  • 来源
  • 会议地点 Ballarat(AU)
  • 作者

    J Rowe; S Sidrak;

  • 作者单位

    MAusIMM, Lecturer - Metallurgy, Xstrata Zinc, School of Science and Engineering, University of Ballarat, PO Box 663, Ballarat Vic 3353;

    Graduate Metallurgist, University of Ballarat, 8/820 Nepean Hwy, Mornington Vic 3931;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 贵重金属矿开采;
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