Title:
A disposal method of a zinc neutralized precipitate
Document Type and Number:
Japanese Patent JP5920720
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for treating zinc slime as a method of recycling, as a zinc refining raw material, a chlorine-containing resin and zinc slime (mixture of zinc hydroxide and the other mixture) produced in a non-ferrous refining step, the method being capable of recovering zinc as a zinc-containing solution and controlling reaction temperature to several hundred degrees °C (for example, 300°C) or lower.SOLUTION: The method for treating zinc slime comprises: a step of heating and kneading zinc slime produced in a non-ferrous refining step and a chlorine-containing resin at 70°C or higher to 130°C or lower to obtain a kneaded product; a step of subjecting the obtained kneaded product to heating treatment at above 130°C to 250°C or lower, generating an acidic gas, and causing removal to obtain reaction residue; a step of adding moisture to the reaction residue to form into a pulp and stirring the pulp; and a step of subjecting the obtained pulp to solid-liquid separation to recover a zinc-containing solution.
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Inventors:
Mountain Saki Mahiko
Hiroki Tomohara
Shoji Mishima
Tomohiko Okada
Hiroki Tomohara
Shoji Mishima
Tomohiko Okada
Application Number:
JP2012168034A
Publication Date:
May 18, 2016
Filing Date:
July 30, 2012
Export Citation:
Assignee:
Kowa concentrate Co., Ltd.
Shinshu University
Shinshu University
International Classes:
C22B19/30; B09B3/00; C22B1/08; C22B7/00
Domestic Patent References:
| JP55062131A | ||||
| JP5191803A |
Other References:
YAMAGUCHI Koichi 他2名,Thermal Treatment of Waste Tire Fly Ash with Polyvinyl Chloride: Selective Leaching of Zinc with Water,Ind Eng Chem Res,米国,2006年 2月 1日,Vol.45 No.3,Page.1211-1216
山口浩一 他2名,廃タイヤ焼却飛灰とポリ塩化ビニルの混合熱処理を利用する資源回収プロセスの開発,名古屋市工業研究所研究報告,日本,2007年12月,No.92,Page.33-36
山口浩一 他2名,廃タイヤ焼却飛灰とポリ塩化ビニルの混合熱処理を利用する資源回収プロセスの開発,名古屋市工業研究所研究報告,日本,2007年12月,No.92,Page.33-36
Attorney, Agent or Firm:
Aniya Setsuo
Hitoshi Kiyono
Okuyama Tomohiro
Hitoshi Kiyono
Okuyama Tomohiro
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