工艺矿物学在黑龙江某低品位铜钼矿中的应用

黑龙江某低品位铜钼矿平均含Mo 0.026%,含Cu 0.015%,属低品位矿。由于矿石含钼、铜较低，为降低选矿成本，有效回收有价金属，对矿石进行详细的工艺矿物学研究。研究发现，主要金属硫化矿有辉钼矿、黄铜矿、黄铁矿、磁黄铁矿等，主要脉石矿物有钾长石、斜长石、石英等。辉钼矿主体嵌布粒度在0.01～0.5 mm,约49.44%,属于微细粒级-细粒级嵌布。黄铜矿主体嵌布粒度在0.02～0.25 mm,多属于微细粒-细粒级嵌布。此外辉钼矿与黄铜矿彼此共生关系密切、黄铜矿可浮性好，造成铜钼分离困难。根据工艺矿物学研究结果，建议采用“快浮+粗选”工艺流程，钼精选强化对黄铜矿的抑制，并增加精扫选作业，有效降低了钼精矿中铜的含量，且实现了铜的综合利用。

Application on Process Mineralogy of a Low-grade Copper-Molybdenum Ore in Heilongjiang

A low-grade copper-molybdenum ore in Heilongjiang average contains Mo 0.026% and Cu 0.015%,belongs to low grade ore.In order to reduce the cost of mineral processing and effectively recover valuable metals,detailed process mineralogy study was carried out.Research found that metal sulfide in the ore are molybdenite, chalcopyrite, pyrite and pyrrhotite,gangue minerals is potassium feldspar, plagioclase and quartz.The main disseminated particle size of molybdenite is between 0.01-0.5mm,about 49.44% belongs to micro-fine or fine particles.Main disseminated particle size of chalcopyrite is between 0.02-0.25mm and belongs to micro-fine or fine particles.Molybdenite and chalcopyrite are closely related to each other,and chalcopyrite has good floatability lead difficult separation of copper and molybdenum.According to the research results of process mineralogy,suggested to use fast floating and roughing flow diagram, molybdenum concentration strengthening inhibition of chalcopyrite and increase the scavenging,content of copper in molybdenum concentrate is reduced, and the comprehensive utilization of copper is realized.