Title:
METHOD FOR PRODUCING ZINC
Document Type and Number:
Japanese Patent JP2014218697
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing zinc eliminating additional cost for dechlorination, suitable for treatment to an electric furnace or the like largely containing chlorine, capable of producing a zinc ground metal with high purity of purity N or higher, and further operable by a compact device.SOLUTION: The method for producing zinc comprises: a solvent extraction step 102 of contacting a leachate 3 obtained in a leaching step 101 with an organic solvent 2, and extracting a zinc component included in the leachate 3 to obtain a solvent 15 including the zinc component; a stripping step 103 of contacting the solent 15 including the zinc component obtained in the solvent extraction step 10 with hydrochloric acid to obtain a zinc chloride aqueous solution 7; a drying step 104 of concentrating and dehydrating the zinc chloride aqueous solution 7 obtained in the stripping step 103, and further contacting the same with a chlorine gas 8 to obtain refined zinc chloride 6; and an electrolytic step 105 of electrolyzing the refined zinc chloride 6 obtained in the drying step 104 in a melted state to obtain a melt 9 of metal zinc and a chlorine gas 8.
Inventors:
IOSAKI MASAAKI
MORI SHUJI
MORI SHUJI
Application Number:
JP2013098318A
Publication Date:
November 20, 2014
Filing Date:
May 08, 2013
Export Citation:
Assignee:
KINOTECH SOLAR ENERGY CORP
International Classes:
C25C3/34; C22B3/04; C22B3/26; C22B7/02; C22B9/02; C22B19/30
Attorney, Agent or Firm:
Kawamoto Study
Mikio Kiyama
Shigeru Takeyama
Mikio Kiyama
Shigeru Takeyama