| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide air permeable refractory containing no Cr<SB>2</SB>O<SB>3</SB>having excellent corrosion resistance, thermal shock resistance and capable of replacing air permeable refractory containing Cr<SB>2</SB>O<SB>3</SB>. <P>SOLUTION: The air permeable refractory having pores 3 for passing a gas comprises: a spinel type mineral 6 comprising Al<SB>2</SB>O<SB>3</SB>and NiO; and zirconia-mullite formed by dispersing ZrO<SB>2</SB>7 in mullite 4 in a crosslinking part 1 between coarse grains 2, 2 of main aggregate. <P>COPYRIGHT: (C)2007,JPO&INPIT |
