Title:
PRODUCTION OF ALUMINA POROUS CARRIER
Document Type and Number:
Japanese Patent JP3469746
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain an alumina porous carrier capable of being rapidly sintered and having uniform physical properties by introducing an alumina molded product comprising alumina powder and an inorganic binder into a roller hearth kiln and subsequently sintering the molded product at a specific temperature.
SOLUTION: This method for producing an alumina porous carrier comprises adding 2.3-4.0 pts.wt. of carboxymethylcellulose and 1-15 pts.wt. of a pore- forming material to 100 pts.wt. of an alumina raw material comprising 92-97 pts.wt. of alumino powder and 3-8 pts.wt. of a mullite-based inorganic binder, molding the mixture, drying the molded product, charging the dried molded product into a sintering vessel, loading the molded product on a roller 100 used for transferring an article to be sintered and disposed in a tunnel 10 comprising a steel casing and a refractory material, transferring the molded product, preliminarily heating the molded product in a preliminarily heating zone 11, sintering the molded product in a sintering zone 12 at a temperature of 1,520 to 1,560°C for 5-8 hr and subsequently introducing the sintered product into cooling zone 13 to cool.
Inventors:
Takao Yamada
Kazuto Building Blocks
Kazuto Building Blocks
Application Number:
JP21595397A
Publication Date:
November 25, 2003
Filing Date:
July 25, 1997
Export Citation:
Assignee:
Noritake Company Limited
International Classes:
C04B38/00; B01J21/04; B01J32/00; B01J37/00; B01J37/08; C04B35/10; C04B38/06; F27D1/00; F27D5/00; (IPC1-7): C04B38/00; B01J21/04; B01J32/00; B01J37/08; C04B35/10
Domestic Patent References:
| JP5124855A | ||||
| JP6199582A | ||||
| JP92884A |
Attorney, Agent or Firm:
Yoshiyasu Takahashi