Title:
The selenium production method from a copper electrolysis slime
Document Type and Number:
Japanese Patent JP6032496
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for production of selenium from an electrolytic slime which is a method of recovering low-sulfur content high-purity selenium by preventing sulfur contamination into the selenium collected from the electrolytic slime.SOLUTION: A method for producing selenium from a copper electrolytic slime comprises: preparing a leachate including at least gold, platinoid elements and selenium in terms of ions by chlorine-leaching the slurry of the copper electrolytic slime; extracting the gold in the leachate into an organic solvent by contacting the leachate with the organic solvent using an organic solvent method; making the included platinoid elements adsorb on an anion-exchange resin by contacting an extraction residual liquid being the leachate after gold extraction with the above resin; and recovering selenium by blowing sulfur dioxide gas which generates in a copper smelting furnace and a converter and is fed through a steel pipe in the adsorption residual liquid being the extraction residual liquid after adsorption, and reducing an included selenium ion. The sulfur dioxide gas is filtered using a filter having an opening of 10-70 μm before the sulfur dioxide gas is blown in the adsorption residual liquid.
Inventors:
Yasushi Isshiki
Hidemasa Nagai
Yoshiaki Manabe
Hideaki Sato
Hidemasa Nagai
Yoshiaki Manabe
Hideaki Sato
Application Number:
JP2013253240A
Publication Date:
November 30, 2016
Filing Date:
December 06, 2013
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C01B19/02; B01D39/16; B01J41/12; C22B3/26; C22B7/00; C22B11/00
Domestic Patent References:
| JP2011506777A | ||||
| JP2012126611A | ||||
| JP2001316735A | ||||
| JP53014117A | ||||
| JP60251107A | ||||
| JP2009050786A | ||||
| JP2004143522A |
Attorney, Agent or Firm:
Yoshitaka Oshida