Title

SIALON-BONDED SILICON CARBIDE - A TOOL FOR EXTENDING THE LIFE OF A BLAST FURNACE LINING

SIALON-BONDED SILICON CARBIDE - A TOOL FOR EXTENDING THE LIFE OF A BLAST FURNACE LINING

Authorship

KERAN, CORLEY LEE

KERAN, CORLEY LEE

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DOI

10.5151/2594-5300-27Aciaria-15-30

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Abstract

Silicon carbide has been used as a blast furnace lining material for more than twenty-five years. Nitride-bonded silicon carbide and to a lesser degree, direct bonded and self-bonded silicon carbide products were the initial products used. Beginning in the mid 80’s sialon-bonded silicon carbides were developed. The key attribute for a silicon carbide refractory has always been it’s alkali resistance. Sialon bonded silicon carbides offer the best resistance to chemical attack of any bonding system. In the 90’s direct-bonded silicon carbides have little use. Nitride-bonded silicon carbides and sialon-bonded silicon carbide are the predominant choices for lining materials. In any year fifty to seventy-five percent of the silicon carbide refractory specifications are for sialon-bonded silicon carbide. A review of the development of sialon-bonded silicon carbide, as well as some comparison between available products will be discussed. In addition, installations using sialon bonded products and information available to date will be offered.

Silicon carbide has been used as a blast furnace lining material for more than twenty-five years. Nitride-bonded silicon carbide and to a lesser degree, direct bonded and self-bonded silicon carbide products were the initial products used. Beginning in the mid 80’s sialon-bonded silicon carbides were developed. The key attribute for a silicon carbide refractory has always been it’s alkali resistance. Sialon bonded silicon carbides offer the best resistance to chemical attack of any bonding system. In the 90’s direct-bonded silicon carbides have little use. Nitride-bonded silicon carbides and sialon-bonded silicon carbide are the predominant choices for lining materials. In any year fifty to seventy-five percent of the silicon carbide refractory specifications are for sialon-bonded silicon carbide. A review of the development of sialon-bonded silicon carbide, as well as some comparison between available products will be discussed. In addition, installations using sialon bonded products and information available to date will be offered.

Keywords

Sialon-Bonded, Nitride-Bonded

Sialon-Bonded, Nitride-Bonded