| 提高青海某铁金矿金浮选回收率的研究与实践 |
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| 引用本文： | 潘炳,王奉刚,张蕴灵,赵卫夺,肖松文.提高青海某铁金矿金浮选回收率的研究与实践[J].矿冶工程,2014,34(3):33-36. |
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| 作者姓名： | 潘炳 王奉刚 张蕴灵 赵卫夺 肖松文 |
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| 作者单位： | 1.长沙矿冶研究有限责任公司, 湖南 长沙 410012;
2.青海省循化县谢坑铜金矿, 青海 循化 811100 |
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| 摘 要： | 针对青海某铁金矿金浮选回收率偏低(仅有80%)的问题开展了系统研究, 发现磨矿粒度偏粗是原来生产金浮选回收率低的关键原因。通过试验确定适宜的磨矿粒度为-0.074 mm粒级占80.40%, 该磨矿粒度下采用一粗-两精-两扫的浮选工艺流程, 闭路试验获得了精矿金品位93.86 g/t、回收率87.96%的良好指标。现场改造在基本不改变浮选工艺流程及药剂制度情况下, 仅降低磨矿粒度, 取得了明显的效果, 金回收率提高到87.5%。
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| 关 键 词： | 铁金矿 磨矿粒度 浮选 回收率 金 |
| 收稿时间： | 2013-12-12 |
Investigation and Practice of Increasing Gold Recovery of an Iron-gold Ore from Qinghai |
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| PAN Bing,WANG Feng-gang,ZHANG Yun-ling,ZHAO Wei-duo,XIAO Song-wen.Investigation and Practice of Increasing Gold Recovery of an Iron-gold Ore from Qinghai[J].Mining and Metallurgical Engineering,2014,34(3):33-36. |
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| Authors: | PAN Bing WANG Feng-gang ZHANG Yun-ling ZHAO Wei-duo XIAO Song-wen |
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| Affiliation: | 1.Changsha Research Institute of Mining and Metallurgy Co Ltd, Changsha 410012, Hunan, China;
2.Xiekeng Copper-gold Mine, Xunhua 811100, Qinghai, China |
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| Abstract: | The lower recovery from gold flotation (around 80%) could be mainly attributed to the coarse fineness of ore grinding, an investigation on the beneficiation parameters of an iron-gold ore from Qinghai was carried out, and the appropriate grinding fineness of -0.074 mm 80.40% was determined. Adopting a flotation flowsheet consisting of one stage of roughing, two stages of cleaning and two stages of scavenging, a gold concentrate with gold content and recovery of 93.86 g/t and 87.96%, respectively, was obtained from the closed-circuit test. An in-situ technical transformation by reducing the grinding fineness with basically the same flotation flowsheet and reagent system leads to the gold recovery up to 87.5%, presenting a manifest improvement. |
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| Keywords: | iron-gold ore grinding fineness flotation recovery gold |
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