Title:
亜鉛精鉱の浸出法
Document Type and Number:
Japanese Patent JP4765114
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To solve the conventional problem that the shortening of leaching time and the reduction of construction cost are required in the conventional method for leaching zinc concentrate because it takes a long time to carry out zinc leaching and a pressure vessel, such as an autoclave, is necessary to accelerate oxidation reaction and construction cost becomes increased. SOLUTION: The leaching is performed while stripping sulfur, etc., as elementary substances formed on the surface of the zinc concentrate by using a pulverizer, such as a ball mill. Trivalent iron ions consumed at the leaching can be regenerated by introducing oxygen into the liquid after leaching in a liquid supply pipe and can be subjected to repeated use. By this leaching method, leaching time can be greatly shortened and the necessity of the pressure vessel, such as autoclave, can be obviated.
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Inventors:
Yoshiyuki Watanabe
Kaoru Saruta
Akira Narumi
Kaoru Saruta
Akira Narumi
Application Number:
JP2001091738A
Publication Date:
September 07, 2011
Filing Date:
March 28, 2001
Export Citation:
Assignee:
DOWA Metals & Mind Co., Ltd.
International Classes:
C22B19/00; C22B19/20; C22B3/04
Domestic Patent References:
| JP7090404A | ||||
| JP44031712B1 |
Foreign References:
| GB1111759B |
Attorney, Agent or Firm:
Kenji Wada
Komatsu Taka
Komatsu Taka