摘要
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。
A low-grade copper-molybdenum ore in Heilongjiang contains on average 0.026%Mo and 0.015%Cu,belonging 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 minerals in the ore are molybdenite,chalcopyrite,pyrite and pyrrhotite,gangue minerals are mainly potassium feldspar,plagioclase and quartz.The main disseminated particle size of molybdenite is between 0.01-0.5 mm,about 49.44%belongs to micro-fine or fine grains.Main disseminated grain size of chalcopyrite is between 0.02-0.25 mm and belongs to micro-fine or fine grains.Molybdenite and chalcopyrite are closely related to each other,and chalcopyrite has good floatability,making separation of copper and molybdenum difficult.According to the research results of the process mineralogy,it is suggested to use fast floating and roughing flowsheet,strengthening inhibition of chalcopyrite by molybdenum cleaning,and increasing the scavenging stages,to reduce the content of copper in molybdenum concentrate,and to realize a comprehensive recovery of copper.
作者
叶洪艳
陈荣健
马智勇
杨晓峰
YE Hongyan;CHEN Rongjian;MA Zhiyong;YANG Xiaofeng(Yichun Luming Mining Co.,Ltd.,Yichun 152500,China;Heilongjiang University of Science and Technology,Harbin 150026,China)
出处
《有色金属（选矿部分）》
CAS
2024年第4期40-48,共9页
Nonferrous Metals（Mineral Processing Section）
关键词
低品位
工艺矿物学
赋存状态
嵌布粒度
low-gradeore
process mineralogy
occurrence state
dissemination size
