Introduction to Refractories for Iron- and Steelmaking by Subir Biswas & Debasish Sarkar

Author:Subir Biswas & Debasish Sarkar
Language: eng
Format: epub
ISBN: 9783030438074
Publisher: Springer International Publishing

2CO + O2 = 2CO2

SiC + 2CO = SiO2 + 2C

2FeO + SiC = SiO2 + 2Fe + C

2MnO + SiC = SiO2 + 2Mn + C

3.5.6 Modern Refractory Practices

Properties required of trough materials include the followings:Good workability.

Uniform high-density structure and high strength at operating temperature,

Resistance to hot metal and slag.

High temperature volume stability.

Oxidation resistance and thermal shock resistance.

The most trough material nowadays used are C–Al2O3–SiC–(Si3N4)-type materials. The type of castable used are low-cement castable or ultra-low-cement castable. The recent development is gel-bonded cement-free castable. Conventionally one type of castable is used in both metal zone and slag zone. One of the significant advantages of this method is the easy installation. However, the corrosion mechanism of metal zone and slag zone is different, hence zonal lining concept had proven the escalating improvement of refractory performance and enhancement of campaign life.

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