| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a chromia-enriched castable refractory substance which improves corrosion resistance by adding chromia in large quantity and at the same time does not decrease thermal shock resistance, and a precast block using the same. <P>SOLUTION: The chromia-enriched castable refractory substance comprises: 5-85 mass% of chromia aggregate having a composition composed of 70-90 mass% of Cr<SB>2</SB>O<SB>3</SB>, 5-20 mass% of Al<SB>2</SB>O<SB>3</SB>, and 1-10 mass% of SiO<SB>2</SB>; 5-35 mass% of chromium oxide fine powder; 1-15 mass% of zirconia fine powder; 1-10 mass% of alumina cement; and the balance of alumina aggregate and/or alumina fine powder. <P>COPYRIGHT: (C)2011,JPO&INPIT |
