Title:
真空脱ガス装置用れんが及びこれを使用したＲＨ浸漬管
Document Type and Number:
Japanese Patent JP7242437
Kind Code:
B2
Abstract:
To provide a brick for a vacuum degassing apparatus which is excellent in thermal shock resistance without degrading corrosion resistance; and to provide an RH immersion tube using the same.SOLUTION: A brick for a vacuum degassing apparatus can be obtained by adding an organic binder to a refractory raw material compound, mixing them, molding the resultant mixture, and thereafter heating the molded mixture, wherein: the refractory raw material compound comprises 5 mass% or more and 15 mass% or less of graphite, 40 mass% or more and 70 mass% or less of spinel having a grain size of 1 mm or more and less than 5 mm, and 20 mass% or more and 50 mass% or less of magnesia having a grain size of less than 1 mm. A content ratio of the spinel having the grain size of less than 1 mm is 10 mass% or less (including 0). A content ratio of the magnesia having the grain size of 1 mm or more and less than 5 mm is 5 mass% or less (including 0). An RH immersion tube using the brick is also provided.SELECTED DRAWING: None
Inventors:
Keisuke Morita
Takahiro Anan
Masayuki Egami
Kazuma Hashimoto
Takahiro Anan
Masayuki Egami
Kazuma Hashimoto
Application Number:
JP2019110561A
Publication Date:
March 20, 2023
Filing Date:
June 13, 2019
Export Citation:
Assignee:
Kurosaki Harima Co., Ltd.
Nippon Steel Corporation
Nippon Steel Corporation
International Classes:
C21C7/00; C04B35/043; C04B35/443; C21C7/10
Domestic Patent References:
| JP2002080272A | ||||
| JP5262559A | ||||
| JP2017007901A | ||||
| JP5301772A | ||||
| JP2020055726A |
Attorney, Agent or Firm:
Patent Attorney Corporation Eiwa Patent Office