Procedure for the Neutralization of acidic Water, precipitation of dissolved Metals and Sedimentation of precipitates obtained by the use of Mining Tailings

摘要

Comprising: (a) use the Tailings concentration process or the process of leaching of minerals in replacement of lime, Limestone,Sodium carbonate or any other material that consumes acid; b) mixing Tailings Pulp with acidic Water Tank agitation.To achieve a pH reduces the concentration of dissolved metals to a value lower than the PML.And carrying out solid-liquid Separation; (c) to separate most of the Alkaline solution of Solid Solid mixing Tailings, the Tailings with acidic Water Tank agitation and continue (b); and(d) in Hydrocyclones to separate the fine Tailings Tailings Pulp and use the fraction of coarse Tailings filling Mining and / or construction of the Tailings Dam.The density of the fine Tailings Pulp, mixing with acid Water Tank agitation and continue (b).In addition, (b) is supplemented by the addition of lime to reach a pH between 6 and 7,And with Passive Biological Treatment of the solution with dissolved metal reducing bacteria to precipitate residual to obtain the concentration lower than the PML.In (d), the Biological Treatment can be in Wetlands or in a confined System, recovers a Metallic precipitate with economic value after such treatment.And the solid-liquid Separation is performed in the final Tailings instead of sedimentation of the plant