摘要
为实现多宝山铜矿难处理铜钼混合精矿的高效分离,提高金属资源的综合利用率,对铜钼混合精矿开展了详细的工艺矿物学研究,并进行了铜钼分选新工艺试验研究。研究结果表明,铜钼混合精矿中铜、钼品位分别为18.95%和0.42%,其中铜主要以黄铜矿、斑铜矿形式存在,钼主要以辉钼矿形式存在;辉钼矿与铜矿物、脉石矿物等嵌布关系复杂,嵌布粒度微细,连生体矿物偏多。试验发现不同的磨矿行为对铜钼分离影响较大,利用不同粒度的矿物之间存在可浮性差异的特点,提出了粗细粒级分级分选新工艺,采用新工艺分离铜钼混合精矿,可获得钼品位为45.14%的钼精矿以及铜品位为19.08%的铜精矿,铜钼作业回收率分别为81.68%和99.94%,产品质量得到明显提升。该技术思路可为现场铜钼分离工艺技术升级改造提供依据。
In order to realize the efficient separation of refractory copper-molybdenum bulk concentrate in Duobaoshan copper mine and improve the comprehensive utilization rate of metal resources,a detailed process mineralogical study has been carried out on copper-molybdenum bulk concentrate and a new process of copper-molybdenum separation was studied.The results show that the grades of copper and molybdenum in the copper-molybdenum bulk concentrate are 18.95%and 0.42%respectively.Copper mainly exists in the form of chalcopyrite and bornite,and molybdenum mainly exists in the form of molybdenite.Molybdenite were complicated with copper minerals and gangue minerals,and they had a fine grain size and a large amount of raw materials.It is found that different grinding behaviors have great influence on the separation of copper and molybdenum.Based on the characteristics of flotability difference among minerals with different grain sizes,a new process for coarse and fine graded sorting is put forward.Molybdenum concentrate with Mo grade of 45.14%and copper concentrate with copper grade of 19.08%can be obtained by the new process.The operation recovery of copper and molybdenum were 81.68%and 99.94%respectively and the product quality was significantly improved.This technical idea can provide the basis for the upgrading and transformation of copper and molybdenum separation process technology.
作者
李琳
LI Lin(Heilongjiang Duobaoshan Copper Co.,Ltd.,Heihe 161416,Heilongjiang,China;Zijin Mining Group Co.,Ltd.,Shanghang 364200,Fujian,China)
出处
《有色金属（选矿部分）》
CAS
北大核心
2021年第1期32-36,共5页
Nonferrous Metals（Mineral Processing Section）
关键词
分级浮选
铜钼混合精矿
工艺矿物学
磨矿
grading flotation
copper-molybdenum bulk concentrate
process mineralogy
grinding
