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RECOVERY PROCESS FOR METAL-CONTAINING BYPRODUCTS OF METAL PRODUCTION AND PROCESSING
RECOVERY PROCESS FOR METAL-CONTAINING BYPRODUCTS OF METAL PRODUCTION AND PROCESSING
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机译:金属生产和加工中的含金属副产物的回收过程
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摘要
the present invention provides a method for the selective recovery of a metal of interest, such as Cr, from metal-containing slag material via a one-step oxidative alkaline leaching process wherein the waste material is contacted with an alkaline leaching solution comprising an alkali metal hydroxide and an alkali metal or alkaline earth metal hypochlorite whereby simultaneously (i) the metal (Cr) is leached from the metal-containing slag and (ii) an aqueous alkaline leach liquor comprising the metal(s) of interest (Cr) is obtained. This way, the valuable metals can be recovered from this waste material and, at the same time, the environmental impact of these waste materials is reduced and their recyclability is improved by removal of the detrimental metal(s).
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