Title:
FLOATATION METHOD OF DESULPHURISAITON AND DESILICONIZATION FOR BAUXITE
Document Type and Number:
WIPO Patent Application WO/2008/006264
Kind Code:
A1
Abstract:
A floatation method of desulphurisaiton and desiliconization for bauxite features that reverse floatation for desulphurisaiton and normal floatation for desiliconization are performed sequentially, in which medium-low class bauxite that contains sulphur is subjected to reverse floatation for desulphurisaiton after first grade grinding, and desulphurisaiton concentrate is subjected to normal floatation for desiliconization after regrinding. The bauxite is subjected to reverse floatation for desulphurisaiton as ethyl xanthate being used as collector after first grade grinding so that bauxite middlings which containing silicon is produced. Thenafter second grade grinding the bauxite middlings is subjected to normal floatation for desiliconization during which saponification fatty acid and naphthenic acid is used as collector after being mixed in proportion. In said process the less reagent is used, and the bauxite concentrate analyzing alumina-silica ratio up to 7-12 and 0.1-0.5% sulphur meet the requirements of producing alumina from bauxite in the Bayer process.
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Inventors:
CHEN, Xiangqing (82 Jiyuan Road, Shangjie DistrictZhengzhou, Henan 1, 450041, CN)
陈湘清 (中国河南省郑州市上街区济源路82号, Henan 1, 450041, CN)
LI, Wangxing (82 Jiyuan Road, Shangjie DistrictZhengzhou, Henan 1, 450041, CN)
李旺兴 (中国河南省郑州市上街区济源路82号, Henan 1, 450041, CN)
YIN, Zhonglin (82 Jiyuan Road, Shangjie DistrictZhengzhou, Henan 1, 450041, CN)
尹中林 (中国河南省郑州市上街区济源路82号, Henan 1, 450041, CN)
YAN, Weizhen (82 Jiyuan Road, Shangjie DistrictZhengzhou, Henan 1, 450041, CN)
陈湘清 (中国河南省郑州市上街区济源路82号, Henan 1, 450041, CN)
LI, Wangxing (82 Jiyuan Road, Shangjie DistrictZhengzhou, Henan 1, 450041, CN)
李旺兴 (中国河南省郑州市上街区济源路82号, Henan 1, 450041, CN)
YIN, Zhonglin (82 Jiyuan Road, Shangjie DistrictZhengzhou, Henan 1, 450041, CN)
尹中林 (中国河南省郑州市上街区济源路82号, Henan 1, 450041, CN)
YAN, Weizhen (82 Jiyuan Road, Shangjie DistrictZhengzhou, Henan 1, 450041, CN)
Application Number:
CN2006/003314
Publication Date:
January 17, 2008
Filing Date:
December 06, 2006
Export Citation:
Assignee:
ALUMINUM CORPORATION OF CHINA LIMITED (62 Xizhimen North Avenue, Haidian District, Beijing 8, 100088, CN)
中国铝业股份有限公司 (中国北京市海淀区西直门北大街62号, Beijing 8, 100088, CN)
CHEN, Xiangqing (82 Jiyuan Road, Shangjie DistrictZhengzhou, Henan 1, 450041, CN)
陈湘清 (中国河南省郑州市上街区济源路82号, Henan 1, 450041, CN)
LI, Wangxing (82 Jiyuan Road, Shangjie DistrictZhengzhou, Henan 1, 450041, CN)
李旺兴 (中国河南省郑州市上街区济源路82号, Henan 1, 450041, CN)
YIN, Zhonglin (82 Jiyuan Road, Shangjie DistrictZhengzhou, Henan 1, 450041, CN)
尹中林 (中国河南省郑州市上街区济源路82号, Henan 1, 450041, CN)
中国铝业股份有限公司 (中国北京市海淀区西直门北大街62号, Beijing 8, 100088, CN)
CHEN, Xiangqing (82 Jiyuan Road, Shangjie DistrictZhengzhou, Henan 1, 450041, CN)
陈湘清 (中国河南省郑州市上街区济源路82号, Henan 1, 450041, CN)
LI, Wangxing (82 Jiyuan Road, Shangjie DistrictZhengzhou, Henan 1, 450041, CN)
李旺兴 (中国河南省郑州市上街区济源路82号, Henan 1, 450041, CN)
YIN, Zhonglin (82 Jiyuan Road, Shangjie DistrictZhengzhou, Henan 1, 450041, CN)
尹中林 (中国河南省郑州市上街区济源路82号, Henan 1, 450041, CN)
International Classes:
B03D1/02; B03D101/02; B03D1/00
Attorney, Agent or Firm:
CHINA PATENT AGENT (H.K.) LTD. (22/F, Great Eagle Centre23 Harbour Road,Wanchai, Hong Kong, GB)
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