| 摘要 |
PROBLEM TO BE SOLVED: To provide a plate brick for which firing time is short, and also, capable of exceedingly increasing tolerance compared with the conventional one, and a method for producing the same.SOLUTION: A molded body comprising a carbon raw material of 1 to 10 mass% and a metallic additive of 1 to 8 mass% is formed. Then, a nonoxidizing gas in which the concentration of a nitrogen gas is 70 to 99 vol%, further, the concentration of a carbon monoxide gas is 1 vol.% or higher, also, the total of the concentration of the carbon monoxide gas and the concentration of the carbon dioxide gas is 20 vol.% or lower, further, the concentration of an oxygen gas is 0.1 vol.% or lower and the concentration of steam is 2 vol.% or lower is blown into a furnace, and the molded body is fired in a state of directly contacted with the nonoxidizing gas in the furnace. As the metallic additive, aluminum or an aluminum-containing alloy can be incorporated by 1 to 4 mass%. |
