Title:
ASBESTOS-FREE HIGH-PURITY NATURAL FLAKY MINERAL AND PROCESS FOR PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO/2008/129705
Kind Code:
A1
Abstract:
The invention provides an asbestos-free high-purity natural flaky mineral
obtained by ridding a natural flaky mineral raw ore of non-flaky mineral components
and asbestos contained therein as impurities; and a process for producing easily
an asbestos-free high-purity natural flaky mineral. The invention relates
to an asbestos-free high-purity natural flaky mineral produced by a process
which comprises coarsely crushing an asbestos-containing natural flaky mineral
raw ore to prepare the first mixture comprising flakes consisting of a flaky mineral
alone, lumps consisting of asbestos-containing non-flaky minerals and/or
lumps consisting of a flaky mineral, and powdery asbestos; screening the first
mixture to prepare the second mixture having a classifiable particle size range;
and separating the second mixture with a specific gravity difference separation
apparatus into flakes consisting of a flaky mineral alone, lumps consisting
of asbestos-containing non-flaky minerals and/or lumps consisting of a flaky
mineral, and powdery asbestos.
Inventors:
MITO, Yohiko (Round-Cross Motoyoyogi 3F, 30-13, Motoyoyogi-cho, Shibuya-k, Tokyo 62, 1510062, JP)
水戸洋彦 (〒62 東京都渋谷区元代々木町３０番１３号ラウンドクロス元代々木３階 昭和ＫＤＥ株式会社内 Tokyo, 1510062, JP)
水戸洋彦 (〒62 東京都渋谷区元代々木町３０番１３号ラウンドクロス元代々木３階 昭和ＫＤＥ株式会社内 Tokyo, 1510062, JP)
Application Number:
JP2007/070678
Publication Date:
October 30, 2008
Filing Date:
October 17, 2007
Export Citation:
Assignee:
SHOWA KDE CO., LTD. (Round-Cross Motoyoyogi 3F, 30-13 Motoyoyogi-cho,Shibuya-k, Tokyo 62, 1510062, JP)
昭和ＫＤＥ株式会社 (〒62 東京都渋谷区元代々木町３０番１３号ラウンドクロス元代々木３階 Tokyo, 1510062, JP)
MITO, Yohiko (Round-Cross Motoyoyogi 3F, 30-13, Motoyoyogi-cho, Shibuya-k, Tokyo 62, 1510062, JP)
昭和ＫＤＥ株式会社 (〒62 東京都渋谷区元代々木町３０番１３号ラウンドクロス元代々木３階 Tokyo, 1510062, JP)
MITO, Yohiko (Round-Cross Motoyoyogi 3F, 30-13, Motoyoyogi-cho, Shibuya-k, Tokyo 62, 1510062, JP)
International Classes:
C01B33/38; B03B4/00; B07B4/00; C01B33/00; B03B4/00; B07B4/00
Attorney, Agent or Firm:
AKIMOTO, Teruo (1-1 Minamiaoyama 1-chome, Minato-ku Tokyo, 62, 1070062, JP)
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