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Mining Technology and Mine Management

Experimental Study on the Recovery of Fine-grained Tungsten and Tin Mineral by Centrifugal Gravity Separation-Flotation Desulfurization Process

  • Ting ZHANG , 1 ,
  • Ping LI 1 ,
  • Bo FENG 2 ,
  • Zhenfei LI 1
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  • 1. Ganzhou Nonferrous Metallurgy Research Institute Co. , Ltd. , Ganzhou 341000, Jiangxi, China
  • 2. Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China

Received date: 2021-06-07

  Revised date: 2021-08-16

  Online published: 2022-04-25

Highlights

In order to effectively recover the tungsten and tin minerals in a fine mud in Guangxi,a centrifugal gravity separation-flotation desulfurization process test was carried out.The contents of WO3 and Sn in the fine mud are 0.52% and 0.31%,respectively. Among them,tungsten is mainly wolframite and scheelite,accounting for 47.69% and 39.42% respectively;tin mainly exists in the form of cassiterite,accounting for 75.48%,followed by tin in sulfide minerals,accounting for 17.42%.The -0.03 mm grain yield rate in the fine mud is 61.36%,and its WO3 and Sn metal content distribution rates are as high as 78.52% and 70.39%,respectively. Therefore,strengthening the recovery of fine-grained tungsten-tin minerals is the key of improving technical economic indexes of mineral precessing.A comparative test of reclaiming fine-grained tungsten and tin minerals by shaker gravity separation and centrifugal gravity separation was carried out,and it was found that the centrifugal concentrator equipment has superiority in the gravity separation and recovery of tungsten tin fine sludge.Detailed condition optimization experiments were carried out on the parameters of slurry feeding concentration,feeding time and drum speed that affect the separation effect of the centrifugal concentrator,and the appropriate technological conditions for the centrifugal gravity separation to recovery fine-grained tungsten and tin minerals were obtained.Further improve the grade of tungsten tin concentrate through flotation desulfurization test.The study used the combined process of centrifugal gravity separation and flotation desulfurization to carry out the whole process open circuit test,and obtained tungsten-tin concentrate with WO3,Sn grades of 19.46%,9.87%,and the recovery of 67.92% and 57.52%,respectively,realizing the effective recovery of fine-grained tungsten-tin minerals.

Cite this article

Ting ZHANG , Ping LI , Bo FENG , Zhenfei LI . Experimental Study on the Recovery of Fine-grained Tungsten and Tin Mineral by Centrifugal Gravity Separation-Flotation Desulfurization Process[J]. Gold Science and Technology, 2022 , 30(1) : 113 -121 . DOI: 10.11872/j.issn.1005-2518.2022.01.072

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近日,第十七届中国上市公司董事会“金圆桌奖”榜单发布,山东黄金矿业股份有限公司(600547.SH,1787.HK)在众多上市公司中脱颖而出,荣获“公司治理特别贡献奖”。

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http://www.goldsci.ac.cn/article/2022/1005-2518/1005-2518-2022-30-1-113.shtml

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