Help! Process for recovering precious metals from wastewater generated in hydrometallurgical processing
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This post was last edited by cdpulin on 2011-4-15 at 10:11. Valuable metals in the waste liquids from the hydrometallurgical process: The recovery of precious metals is achieved through a complete process that includes flotation, pyrometallurgy, and hydrometallurgy. Due to the long duration of this processing chain, large amounts of wastewater are generated during the refining process; these wastewaters contain certain amounts of valuable metals. Currently, chemical precipitation methods are used for treating these wastewaters, but such methods are costly and result in low yields of the metals recovered. Therefore, it is necessary to find more economical recovery methods in order to improve the yield of metals recovered. The goal is to improve the direct yield of metals and the effective recovery of valuable elements through research on new wastewater treatment processes.
A biological sulfide reactor can be used to generate sulfides that react with heavy metals, with the resulting products serving as colored raw materials.
Using ion exchange resin for hierarchical adsorption to recover metals yields a higher efficiency
Membrane separation technology could be considered; it’s said to be quite good
Wastewater treatment is carried out by combining ion exchange for the adsorption of heavy metals with membrane separation technology.