| 摘要 |
Insulating brick (1) to be built inside of an industrial furnace for high temperature heating including a blacken film layer (2) in contact with an inside of the furnace, having a blackness higher than 0.85, and method for manufacturing the same including the steps of mixing a coloring raw material with solvent such as water, alcohol, and kerosene, the coloring raw material including 2 - 100wt% of at least one kind of material selected from a group of materials, including iron oxide, chrome oxide, manganese oxide, titanium oxide, and cobalt, and balance of at least one kind of material selected from a group of materials, including aluminum oxide, silicon oxide, zirconia, magnesium oxide, calcium oxide, sodium oxide, silicon carbide, and carbon, coating above mixture on an inside part of the insulating brick in contact with an inside of the furnace, to form a blacken film layer (2), and baking the insulating brick having the blacken film layer formed thereon for 1 - 7 hours at 500 - 1700 C. |
