Title:
FIBROUS TRICALCIUM SILICATE HYDRATE AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3290460
Kind Code:
B2
Abstract:
PURPOSE: To form the long fibrous product by mixing a calcareous raw material with a siliceous raw material, adding MgO and then an alkali metal hydroxide to the mixture and subsequently subjecting the mixture to a hydrothermal reaction under saturated vapor pressure.
CONSTITUTION: A calcareous raw material such as CaO and a siliceous raw material such as silica are mixed with each other in a CaO/SiO2 molar ratio of 1.6-4.0. The mixture is mixed with MgO in an amount of 0.5-2.0wt.% based on the whole raw materials and further with the 0.1-8.0 N aqueous solution of an alkali metal hydroxide such as NaOH in an amount of 10-40 times weight based on the whole raw materials. The raw material mixture is charged in an autoclave and subjected to a hydrothermal reaction under a saturated vapor- pressure of 220-300°C for a prescribed time under stirring at a rotation rate of 20rpm. The produced slurry product is filtered, washed with water and subsequently dried to provide the fibrous tricalcium silicate hydrate having a fiber length of ≥1mm.
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Inventors:
Masato Sakiyama
Takuya Asami
Mitsuharu Osawa
Takuya Asami
Mitsuharu Osawa
Application Number:
JP10728892A
Publication Date:
June 10, 2002
Filing Date:
April 27, 1992
Export Citation:
Assignee:
A&A Material Co., Ltd.
International Classes:
C01B33/24; C04B14/46; (IPC1-7): C01B33/24
Domestic Patent References:
| JP421516A | ||||
| JP2116610A | ||||
| JP54134095A | ||||
| JP4828400A | ||||
| JP297444A |
Attorney, Agent or Firm:
Toshiro Mitsuishi (1 person outside)