Title:
不定形耐火物
Document Type and Number:
Japanese Patent JP5212456
Kind Code:
B2
Abstract:
The object of the invention is to obtain an excellent characteristics concerning slag penetration-resistance, corrosion-resistance, and structural stability on usage of lining-refractory such as equipment for desiliconizing molten iron, a ladle for steel-making, a RH equipment and so forth. In order to solve a various problems that have a possibility to prohibiting the object of this invention, the unshaped refractories provide fine particles of under 0.75 mm diameter, and aggregate of 0.75 - 10 mm. Furthermore, the fine particles contain 10-35 mass % content of MgO, to the total mass % of the fine particles. Even furthermore, the sum total amount of MgO and Al 2 O 3 is more than 90 mass %, to the total mass % of the fine particle. Additionally, such fine particles has 5-40 mass % of particles made of pericles-spinel, as a source of MgO, to the total mass % of the unshaped refractories. And, the aggregate comprises at least one selected from the group consisting of particles made of alumina and particles made of spinel.
Inventors:
Sadako Kiyota
Application Number:
JP2010284076A
Publication Date:
June 19, 2013
Filing Date:
December 21, 2010
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
C04B35/66; B22D35/00; B22D41/02; C04B35/101; C21C7/10; F27D1/00; F27D1/10
Domestic Patent References:
| JP7330452A | ||||
| JP8012452A | ||||
| JP9278543A | ||||
| JP7291748A | ||||
| JP59128271A |
Attorney, Agent or Firm:
Junzo Ogawa
Morio Nakamura
Shiro Fujitani
Morio Nakamura
Shiro Fujitani