Method for wet separation and recovery of valuable metal from Kaldo furnace smelting slag
The invention discloses a method for wet separation and recovery of valuable metal from Kaldo furnace smelting slag. Kaldo furnace smelting slag is ground and dipped in water to remove soluble salt; copper, selenium and tellurium in the slag are leached out by using pressurization, oxidation and aci...
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Main Authors | , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
09.11.2016
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a method for wet separation and recovery of valuable metal from Kaldo furnace smelting slag. Kaldo furnace smelting slag is ground and dipped in water to remove soluble salt; copper, selenium and tellurium in the slag are leached out by using pressurization, oxidation and acid leaching for treatment to obtain copper sulfate solution, silver-selenium slag and copper telluride slag; tellurium, silver and selenium can be respectively recovered from the silver-selenium slag and the copper telluride slag; pressurized copper removing filter residue is mixed with hydrochloric acid for leaching out antimony and bismuth to finally obtain lead-silver slag capable of returning to a Kaldo furnace for smelting; and antimony and bismuth are further recovered from antimony-bismuth solution. According to the method, a mode of stepped removal and recovery of such metal as copper, antimony, bismuth, selenium, tellurium, silver and lead enriched in the Kaldo furnace smelting slag is adopted, compatibilit |
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Bibliography: | Application Number: CN20161631966 |