Title:
高炉羽口用耐火物れんがのモルタル及び高炉羽口構造体
Document Type and Number:
Japanese Patent JP6744794
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a cement mortar of refractory brick for blast furnace tuyere and a blast furnace tuyere structure capable of achieving both improvement of alkali resistance and improvement of adhesive strength of the cement mortar.SOLUTION: There is provided a silicon carbide based cement mortar of refractory brick for blast furnace tuyere which comprises fire resistant material, antioxidizing agent, and sodium silicate as binding agent. The fire resistant material comprises from 87 to 97 mass% of alumina raw material, and from 0.5 to 5 mass% of carbon raw material and/or silicon carbide raw material. The antioxidizing agent is formulated from 0.3 to 3 mass% in outer percentage relative to 100 mass% of the fire resistant material. The sodium silicate is formulated from 30 to 60 mass% in outer percentage relative to the total amount of 100 mass% of the fire resistant material and the antioxidizing agent. The silicon carbide based cement mortar contains 70 mass% or more of SiC as chemical component.SELECTED DRAWING: None
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Inventors:
Toshihisa Sasaki
Tomoya Nakamura
Kazuya Maruyama
Tomoya Nakamura
Kazuya Maruyama
Application Number:
JP2016187277A
Publication Date:
August 19, 2020
Filing Date:
September 26, 2016
Export Citation:
Assignee:
Kurosaki Harima Co., Ltd.
Nippon Steel Corporation
Nippon Steel Corporation
International Classes:
C04B35/66; C21B7/00; C21B7/06; C21B7/16; F27D1/00; F27D1/04
Domestic Patent References:
| JP5345679A | ||||
| JP2000282121A | ||||
| JP2000302539A | ||||
| JP2002195761A | ||||
| JP60051667A | ||||
| JP63117951A | ||||
| JP2224867A |
Foreign References:
| WO2015129745A1 |
Attorney, Agent or Firm:
Eiwa patent office