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我矿改进工艺制度:把弱碱介质浮铅改为弱酸介质浮铅;采用丁钠黑药与乙黄药混用取代单一黄药分离铅锌,使铅、锌精矿的质量和回收率均明显提高,选矿成本相应降低。(一)矿石性质丙村铅锌矿区为裂隙充填交代中温热液矿床,它产于泥盆纪岩断裂带中。金属矿物以方铅矿、闪锌矿为主,还有黄铁矿、毒砂、锡石、白铁矿和磁黄铁矿等。脉石矿物主要是石英,还有白云母、绢云母、绿泥石和石灰石等。矿物呈粗细不均匀嵌布,方铅矿粒度为0.1～2毫米,闪锌矿为0.02～2毫米,它们相互呈不规则交代接触。闪锌矿中含铁较多。(二)弱酸性介质浮铅在小型试验获得弱酸性介质浮铅较好指标的基础上,我矿于1980年2月采用弱酸性介质浮铅,生产指标大幅度提高,而且
I mine to improve the process system: the weak base medium float lead to weak acid medium floating lead; sodium dyestuff mixed with yellow drug instead of single xanthate lead and zinc separation, lead and zinc concentrate quality and recovery were significantly Improve, reduce the cost of dressing accordingly. (I) Ore properties The Cumura lead-zinc mining area is a fracturing-filled hydrothermal fluid deposit and is produced in the Devonian rock fracture zone. Metallic minerals are galena and sphalerite, as well as pyrite, arsenopyrite, cassiterite, white iron ore and pyrrhotite. Gangue minerals are mainly quartz, as well as muscovite, sericite, chlorite and limestone. Mineral uneven thickness imbedding, galena size of 0.1 to 2 mm, sphalerite 0.02 to 2 mm, they were irregular interchangeable contact with each other. Sphalerite contains more iron. (B) weak acid medium float lead In a small test to obtain a weak acid medium float lead on the basis of a good indicator, I mine in February 1980 with weak acid medium float lead, the production index increased substantially, and