Document Type and Number:
Japanese Patent JPS555578
Kind Code:
B2
Abstract:
In a process for the recovery of metal chlorides from jarosite in sludges which result from the sulphuric acid processing of ores, the sludge is treated with an aqueous solution of an alkaline earth metal chloride. This solution contains free hydrochloric acid and is in excess stoichiometric ratio to the sulphate content of the sludge. The insoluble materials are separated from the metallic chloride solution by filtering, and are stripped of metallic chlorides by washing and further filtering. The metallic chloride solutions are then collected. The alkaline earth chloride is preferably calcium chloride. The process is particularly, but not exclusively, applicable to recovering metals from jarosite-type sludge resulting from the processing of zinc ore.
Application Number:
JP134476A
Publication Date:
February 07, 1980
Filing Date:
January 07, 1976
Export Citation:
International Classes:
C22B58/00; C21B15/00; C22B3/10; C22B7/00; C22B11/00; C22B13/00; C22B15/00; C22B19/30
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