Title:
METHOD FOR SOLIDIFYING CALCIUM CARBONATE AND/OR MAGNESIUM CARBONATE
Document Type and Number:
Japanese Patent JP3338828
Kind Code:
B2
Abstract:
PURPOSE: To solidify CaCO3 and/or MgCO3 or a material consisting essentially of them under mild conditions.
CONSTITUTION: CaCO3 and/or MgCO3 or a material consisting essentially of them are mixed with at least one Ca or Mg based material selected from CaO, Ca(OH)2, MgO and Mg(OH)2 and a silica based material and thereafter, the resulting mixture is solidified by utilizing an autoclave reaction. Thus, these raw materials are easily and efficiently solidified under mild conditions of comparatively low temp. and low pressure by only treating them through using a conventional device, i.e., an autoclave to obtain a high strength solidified body and accordingly, the reduction in energy consumption and cost can be attained by using this method. Therefore, CO2 in a waste combustion gas can be fixed and recovered as CaCO3 and/or MgCO3 and the recovered material is solidified at a low treating cost to effectively utilize the solidified product for construction and civil work materials, etc.
Inventors:
Yasuo Shibasaki
Keiichi Inukai
Shin Itsuki
Hideki Ishida
Yasuo Goto
Tatsuya Nagata
Takeyuki Yamamoto
Hiroki Maenami
Keiichi Inukai
Shin Itsuki
Hideki Ishida
Yasuo Goto
Tatsuya Nagata
Takeyuki Yamamoto
Hiroki Maenami
Application Number:
JP6235894A
Publication Date:
October 28, 2002
Filing Date:
March 31, 1994
Export Citation:
Assignee:
National Institute of Advanced Industrial Science and Technology
Inax Co., Ltd.
Inax Co., Ltd.
International Classes:
B09B3/00; C04B7/13; C04B7/34; C04B9/00; C04B28/18; C04B40/00; B01D53/62; C04B40/02; (IPC1-7): C04B40/02; B01D53/62; B09B3/00; C04B7/34; C04B9/00; C04B28/18
Domestic Patent References:
| JP51102021A | ||||
| JP3252341A | ||||
| JP761842A | ||||
| JP7267758A | ||||
| JP7267698A |
Attorney, Agent or Firm:
Takeshi Shigeno
Takeshi Shigeno
Takeshi Shigeno