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本文对多金属矿选矿厂旧尾矿场中的尾矿加工工艺进行了实验室的研究。在堆存的尾矿中存在有如下几种矿物(按递减顺序):黄铁矿、闪锌矿、方铅矿和黄铜矿。绝大部分的方铅矿和黄铜矿与闪锌矿和脉石连生,因此,从它们之中分出单独的精矿是很困难的。70—90％的铅是以氧化物形式存在,而铜的含量又相当低(0.03—0.04％)。金(0.8—2.2克/吨)、银(13—18克/吨)和锌(0.6—1.2％)具有工业价值,按石英的含量(70—75％),尾矿属于劣等的含金熔剂。40—45％的锌呈氧化物、硅酸盐和碳酸盐的形式存在,在尾矿场的上层氧化锌较多,达70％。40—50的金和银是连生体。30—40％同硫化物连生,主要是同黄铁矿连生,5-10％同脉石连生,～15％的金呈单体,大部分被氧化膜复盖,单体金的粒度为20—30微米。
In this paper, the tailings processing technology in the old tailings mine of polymetallic ore beneficiation plant was studied in laboratory. There are several minerals (in decreasing order) in the stockpiled tailings: pyrite, sphalerite, galena and chalcopyrite. The vast majority of galena and chalcopyrite are associated with sphalerite and gangue so separating separate concentrates from them is difficult. 70-90% of the lead is in oxide form and the copper content is very low (0.03-0.04%). Gold (0.8-2.2 g / t), silver (13-18 g / t) and zinc (0.6-1.2%) are of industrial value and the tailings are inferior to gold-bearing fluxes in terms of quartz content (70-75% . 40-45% of the zinc is in the form of oxides, silicates and carbonates, and the upper zinc oxide in the tailings is more, up to 70%. 40-50 gold and silver are even born. 30-40% is concomitant with sulphide, mainly connected with pyrite, 5-10% mixed with gangue, and ~ 15% gold is monomer, most of which is covered by oxide film. Monomer gold particle size is 20-30 microns.