难选镍矿浮选-浸出试验研究
Study on Flotation-leaching for a Refractory Nickel Ore
  
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马卫红 内蒙古自治区矿产实验研究所 
王海燕 内蒙古自治区矿产实验研究所 
李根兴 内蒙古自治区矿产实验研究所 
曾钦 内蒙古自治区矿产实验研究所 
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中文摘要:
      以某地难选镍矿为研究对象,在矿石工艺矿物学研究的基础上,对含镍0.44% 的原矿进行 系统的浮选试验研究,只能获得品位为3.13%,回收率仅为25.53%的镍精矿。该难选镍矿回收 率指标较低,因此考虑采用化学选矿或冶炼富集的方法提取浮选尾矿中的镍。矿石中的硫酸镍在矿浆 中易溶解,使矿浆呈酸性,氧化镍在稀溶液中易溶解,硅酸镍在较高酸度下也能部分溶解,而硫化镍 能在稀酸溶液中部分溶出,在氧化环境中能较好的溶出。根据镍矿物的这些特性,在较佳的浸出 条件下,可获得镍含量为21.42%,回收率为61.84%的较好指标,取得了满意的结果。
英文摘要:
      On the basis the research on processing mineralogy of ores, the experimental research on flotation for the refractory nickes ore with the nickel of 0.44% was carried on. At last, the nickel concentrate with the grade of 3.13% and the recovery of 25.53% was obtained, whose index is relatively low. Therefore, the methods of chemical processing or smelting enrichment were considered to be adopted to extract the nickel in the tailings. The nickel sulfate in the ore can be easily dissolved in the pulp, making the pulp acid. At the same time, nickel oxide can be dissolved in the dilute solution and nickel silicate in the high acidity can also be part of the solution. For nickel sulfate, it can be partly digested in the dilute dissolution and better in the oxidation environment. According to these properties, the indexes with the content of nickel as 21.42% and the recovery of 61.84% could be obtained under the optimum leaching conditions. The result is satisfactory.
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