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Title:
INSOLUBILIZING AGENT
Document Type and Number:
WIPO Patent Application WO/2010/052986
Kind Code:
A1
Abstract:
An insolubilizing agent which can sufficiently inhibit, even when added in a small amount, heavy metals and so on from being leached from heavily contaminated soil or wastewater.  The insolubilizing agent contains a partial hydrate of soft-burned magnesia, said partial hydrate being prepared by subjecting a soft-burned magnesia obtained by burning a mineral comprising magnesium carbonate and/or magnesium hydroxide as the main component at 550 to 1,400°C to partial hydration.  The content of magnesium oxide in the partial hydrate of soft-burned magnesia is 50 to 96.5mass%, the content of magnesium hydroxide therein is 3.5 to 50mass%, and the content of calcium therein is 5.0mass% or lower in terms of oxide.

Inventors:
MATSUYAMA, Yuusuke (4-2 Osaku 2-chome, Sakura-sh, Chiba 55, 〒2858655, JP)
松山 祐介 (〒55 千葉県佐倉市大作二丁目4番2 太平洋セメント株式会社中央研究所内 Chiba, 〒2858655, JP)
HAYASHI, Hiroshi (4-2 Osaku 2-chome, Sakura-sh, Chiba 55, 〒2858655, JP)
林 浩志 (〒55 千葉県佐倉市大作二丁目4番2 太平洋セメント株式会社中央研究所内 Chiba, 〒2858655, JP)
Application Number:
JP2009/067434
Publication Date:
May 14, 2010
Filing Date:
October 06, 2009
Export Citation:
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Assignee:
TAIHEIYO CEMENT CORPORATION (3-5 Daiba 2-chome, Minato-ku Tokyo, 78, 〒1358578, JP)
太平洋セメント株式会社 (〒78 東京都港区台場二丁目3番5号 Tokyo, 〒1358578, JP)
MATSUYAMA, Yuusuke (4-2 Osaku 2-chome, Sakura-sh, Chiba 55, 〒2858655, JP)
松山 祐介 (〒55 千葉県佐倉市大作二丁目4番2 太平洋セメント株式会社中央研究所内 Chiba, 〒2858655, JP)
HAYASHI, Hiroshi (4-2 Osaku 2-chome, Sakura-sh, Chiba 55, 〒2858655, JP)
International Classes:
C09K17/02; B09B3/00; B09C1/02; B09C1/08; C09K103/00
Foreign References:
JP2008155101A
JP2005238198A
JP2004292568A
JP2003193462A
JP2003117532A
JP2007161839A
JP2007161838A
JP2005238207A
JPH06206722A
Attorney, Agent or Firm:
HIRATA, Naoyuki (LEAD INTERNATIONAL PATENT OFFICE, Takou Building Kudan 4F 8-5, Iidabashi 2-chome, Chiyoda-k, Tokyo 72, 〒1020072, JP)
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