CIRCULATING TYPE APPARATUS AND METHOD FOR RECOVERY OF VALUABLE METAL BY ALKALI LEACHING

摘要

PROBLEM TO BE SOLVED: To provide an environment-friendly apparatus for recovery of valuable metals with maximized process efficiency, which is a closed system in which chlorine and alkali metal hydroxide can be recirculated and used, and which aims at valuable metal recovery.

SOLUTION: The apparatus capable of recovering valuable metal according to the property of the valuable metal includes: an electrolytic chlorine producing bath 100; a dissolution bath 200 to perform leaching of a valuable metal containing material at a rear side of the electrolytic chlorine producing bath; a gas supply machine 500 connected to the dissolution bath for supplying carrier gas; a collection bath 300 for collecting a volatile substance in the stage subsequent to the dissolution bath; a separation bath 400 for separating and refining a leaching reactant generated in the dissolution bath; and chlorine and alkali metal hydroxide recirculation lines 601 and 602 that connect the electrolytic chlorine producing bath 100, the dissolution bath 200 and the separation bath 400.

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