Title:
METHOD FOR REMOVING THALLIUM FROM FLUE CINDER
Document Type and Number:
Japanese Patent JP2014166608
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for efficiently separating and removing thallium contained at a low containing rate in flue cinder produced in a copper smelting process and the like.SOLUTION: In a method for removing thallium,: flue cinder containing thallium is made to a flue cinder slurry having a sulfuric acid concentration of 0.3 N or more and less than 4 N; thallium is leached by continuously adding potassium permanganate so that the oxidation reduction potential of the flue cinder slurry is kept in a range of 960 mV or more and 1,350 mV or less until the finishing of leaching; and specifically, the leaching rate of thallium is 75% or more.
Inventors:
IKUTA DAIGO
OKADA SATOSHI
OKADA SATOSHI
Application Number:
JP2013039040A
Publication Date:
September 11, 2014
Filing Date:
February 28, 2013
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP
International Classes:
B09B3/00; C22B3/04; C22B7/02; C22B61/00
Attorney, Agent or Firm:
Hiroshi Chiba
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