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选矿厂排出了许多有机和无机的废水和废渣，其中许多是有毒的。在排放过程中，必须从各种料流中分离出这部分有毒物料或使其转变成无毒。水的适当循环使用和（或）渣的适当处置，均能减少废弃物的处理问题。废水和溶于水或其它液体中的物质的再生方法包括：尾矿坝的合理使用、固体还原或分离方法的利用、细粒的絮凝、碱或酸的加入、溶液中金属的沉淀和共沉淀、吸附、生物降解法、浮选及氧化／还原法。渣的适当处理取决于尾矿坝的合理建设和管理。固体物料的烧结和其它物理粘合处置是处理含硫化物的活性废渣的潜在方法。本文讨论了各种处理技术，列出了选厂排出的各种物料的近似数量，并预测了其中一些物料的相对毒性。
Concentrator discharged many organic and inorganic wastewater and waste, many of which are toxic. In the discharge process, this part of the toxicant must be separated from the various streams or converted to non-toxic. Appropriate recycling of water and / or appropriate disposal of the slag can reduce waste disposal issues. Recycling of waste water and materials dissolved in water or other liquids include: rational use of tailings dams, utilization of solid reduction or separation processes, flocculation of fines, addition of bases or acids, precipitation of metals in solution and coprecipitation , Adsorption, biodegradation, flotation and oxidation / reduction. The appropriate treatment of slag depends on the rational construction and management of the tailings dam. Sintering of solid materials and other physical bonding treatments are potential ways of treating the sulfide-containing active sludge. This article discusses various processing techniques that outline the approximate quantities of various materials discharged by the mill and predict the relative toxicity of some of them.