Sorting arsenic non-ferrous and precious metal ore, the abandoned tailing tailings slurry are subject to the arsenic pollution. This is because the process of sorting the ore, the arsenic is arsenic minerals (eg, scorodite, arsenopyrite, etc.) in the leaching of arsenic in tailings by further washing the results.
In order to prevent arsenic sewage and its penetration of the pollution of river systems, must make the arsenic into easy to preserve the stability of the sediment and to reduce the arsenic content in the slurry discharged into the tailings slurry solid-phase methods of arsenic removal, to the provisions of emission standards. South African mining equipment
Soviet National Nonferrous Metals Research Institute to develop the tailings slurry arsenic removal process is the use of a single iron sulfide precipitate from the solution of arsenic-based. This process is characterized by a mixture of single iron sulfide and ferrous sulfate. Of ferrous sulfate added to ensure that the tailings slurry PH value to 6.7 to 7.2.
Sulfide from the concentrator tailing off God - the sulphate process: yemen crusher Preparation of ferric sulfate and sodium sulfide solution, a single iron sulfide with ferrous sulfate generated in the mixing process of solution of sodium sulfide and ferrous sulfate mixture of pulp, so that the sedimentation of the slurry in the tailings, and the pulp of the clarified water returns to use.
In the concentrator dearsenication, the arsenic content in the tailings increases as the depth increases, while in the Far East Joint concentrator tailings, arsenic content with increasing depth of the lower. Discharge of water from the drainage wells lowest arsenic content. Uzbekistan Mining equipment