| abstract |
PROBLEM TO BE SOLVED: To provide an alumina cement composition having high strength development, high fluidity, and high corrosion resistance, which is not found in conventional products, and an amorphous refractory using the same. SOLUTION: An alumina cement composition containing an alumina cement and an admixture having a specific structural unit, Further, an alumina cement composition obtained by mixing a sulfonic acid compound, the alumina cement composition and a refractory aggregate, Furthermore, it comprises an amorphous refractory containing ultrafine powder. |