Title:
A METHOD FOR PURIFICATION OF MONTMORILLONIT, PURIFIED MONTMORILLONITE AND COMPOSITION THEREOF
Document Type and Number:
WIPO Patent Application WO/2007/090355
Kind Code:
A1
Abstract:
A method for purification and separation of inorganic mineral, especially for purification and separation of montmorillonite from natural bentonite is provided. The said method is simple, and uses high-speed centrifugal device to well solve the problems present in purification of montmorillonite that α-quartz and cristobalite are difficult to be separated and removed and purified slurry is difficult to be concentrated and dehydrated. The purity of montmorillonite thus obtained is not less than 95%.
Inventors:
ZHENG HAIHUI (CN)
LV GUANGLIE (CN)
LV GUANGLIE (CN)
Application Number:
PCT/CN2007/000463
Publication Date:
August 16, 2007
Filing Date:
February 09, 2007
Export Citation:
Assignee:
ZHEJIANG HAILISHENG PHARMACEUT (CN)
ZHENG HAIHUI (CN)
LV GUANGLIE (CN)
ZHENG HAIHUI (CN)
LV GUANGLIE (CN)
International Classes:
B03B5/32; C04B33/04; C04B41/00
Other References:
YANG N. ET AL.: "Study on wet-purification of calcium-base bentonite", ZHEJIANG CHEMICAL INDUSTRY, vol. 21, no. 3, 1990, pages 30 - 32
ZHEN W. ET AL.: "Study on wet-purification and organization and application of sodium-base bentonite from Xiazijie of Xinjiang", NON-METALLIC MINES, vol. 28, no. 6, 2005, pages 43 - 46
JIANG G. ET AL.: "Processing and application of bentonite", vol. 1ST ED., April 2005, CHEMICAL INDUSTRY PRESS, pages: 139 - 148
ZHAO W. ET AL.: "Purification of low Ca-bentonite and turning Ca-bentonite into Na-bentonite", J. HUAIBEI COAL INDUSTRY TEACHERS COLLEGE, vol. 26, no. 4, 2005, pages 48 - 51
RONG K. ET AL.: "Wet-method purification and transformation of montmorillonite", CONSERVATION AND UTILIZATION OF MINERAL RESOURCES, no. 3, 1996, pages 19 - 22
NIU B.: "Study on purification of bentonite", IM & P, no. 8, 1999, pages 6 - 8
ZHEN W. ET AL.: "Study on wet-purification and organization and application of sodium-base bentonite from Xiazijie of Xinjiang", NON-METALLIC MINES, vol. 28, no. 6, 2005, pages 43 - 46
JIANG G. ET AL.: "Processing and application of bentonite", vol. 1ST ED., April 2005, CHEMICAL INDUSTRY PRESS, pages: 139 - 148
ZHAO W. ET AL.: "Purification of low Ca-bentonite and turning Ca-bentonite into Na-bentonite", J. HUAIBEI COAL INDUSTRY TEACHERS COLLEGE, vol. 26, no. 4, 2005, pages 48 - 51
RONG K. ET AL.: "Wet-method purification and transformation of montmorillonite", CONSERVATION AND UTILIZATION OF MINERAL RESOURCES, no. 3, 1996, pages 19 - 22
NIU B.: "Study on purification of bentonite", IM & P, no. 8, 1999, pages 6 - 8
Attorney, Agent or Firm:
KELONG INTERNATIONAL INTELLECTUAL PROPERTY AGENT LTD. (Bldg. A Horizon International Tower, No. 6 Zhichun Roa, Haidian District Beijing 8, CN)
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