Increase in the Slag Resistance of Refractories Based on the Al₂O₃-SiC-SiO₂ System

Abstract:

The technology for manufacturing corundum-carbide-silicon refractories with increased slag resistance has been developed. It is shown that one of the directions for improving the quality of carbon-containing products is the creation of protective antioxidant coating on the surface of particles. A dense protective film is formed during the processing on the surface of carbon-containing particles. The coating does not break down when heated to the melting temperature of steel. Therefore, the number of heat-conducting particles in the bond can be increased without the risk of loss of strength. An increase of the number of high-heat-conducting particles reduces the value of the temperature gradient inside the refractory and reduces the zone impregnated with the melt. A technique has been developed that makes it possible to determine the degree of interaction of a refractory with metal (slag) in ground samples under the binocular microscope MBS-9. The proof of high slag resistance is the depth of penetration of metal and slag into the structure of the sample by not more than 1 to 2 mm without changing the lateral surface of the conical hole.

• Periodical: Solid State Phenomena (Volume 284)
• Pages: 59-64
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.284.59
• Online since: October 2018
• Authors: Tatiana M. Lonzinger*, Vadim A. Skotnikov
• Keywords: Antioxidant, Corundum-Carbide-Silicon Refractories, Heat Resistance, Increase of Operational Characteristics, Slag Resistance, Temperature Gradient

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