Patent ID: 8084122

Claim:
A zirconia-carbon-containing refractory comprising: aggregate grains; a carbon bond formed between the aggregate grains; 80% by mass or more of a ZrO 2 component; and a carbonaceous material, wherein the total volume of open pores and the carbonaceous material in the structure of the refractory is in the range of 25% to 42% by volume, open pores each having a diameter of 10 μm or more account for 30% or less of the total volume of open pores in the structure of the refractory, and carbonaceous material grains each having a maximum length exceeding 45 μm in the carbonaceous material in the zirconia-carbon-containing refractory account for less than 60% by mass of the total mass of the carbonaceous material except the bonding carbon in the zirconia-carbon-containing refractory.