SLon-500磁选机分离细粒铜钼混合精矿研究

Study on Separation of Fine Copper-Molybdenum Bulk Concentrate by SLon-500 Magnetic Separator

针对黄铜矿与辉钼矿可浮性相近,易混合浮选,但分离浮选困难且药剂消耗大、生产成本高这一技术难题,在前期大量研究工作基础上,提出“脉动高梯度磁选预选—浮选分离”细粒铜钼混合精矿的思路。介绍了SLon-500立环脉动高梯度磁选机使用新型优化磁介质预选分离细粒铜钼混合精矿的研究成果。结果表明,针对铜、钼品位分别为26.18%和0.34%、-0.043 mm占84.28%的细粒铜钼混合精矿进行分选,可以获得产率为45.46%、含钼0.076%、铜品位为30.15%和铜回收率为52.34%的铜精矿和产率54.54%、铜品位22.87%、钼品位0.56%和钼回收率89.85%的钼粗精矿,分离效果优异。研究成果为“脉动高梯度磁选预选—浮选分离”细粒铜钼混合精矿新技术工艺的工业化应用奠定了重要基础,有利于提高我国钼资源的开发利用水平。

Chalcopyrite and molybdenite have similar floatability and are easy to be mixed flotation,but separation flotation is difficult,reagent consumption is large and production cost is high.Based on a large number of previous research work,the idea of pulsating high gradient magnetic separation pre-flotation separation of fine copper-molybdenum mixed concentrate is put forward.Research results of SLon-500 vertical ring pulsating high gradient magnetic separator for pre-separation of fine copper-molybdenum bulk concentrate with new optimized magnetic medium are introduced.Results show that the separation of fine copper-molybdenum bulk concentrate containing 26.18%Cu,0.34%Mo and 84.28%-0.043 mm.Copper concentrate with yield of 45.46%,molybdenum content of 0.076%,copper grade of 30.15%and copper recovery of 52.34%and molybdenum rougher concentrate with yield of 54.54%,copper grade of 22.87%,molybdenum grade of 0.56%and molybdenum recovery of 89.85%can be obtained with excellent separation effect.The research results lay an important foundation for the industrial application of the new technology of pulsating high gradient magnetic separation preconcentration-flotation separation of fine copper-molybdenum bulk concentrate,and are conducive to improving the level of development and utilization of molybdenum resources in China.