Carbon-containing refractory
AssigneeKyusyu Refractories Co., Ltd.
InventorsAkira Watanabe, Toshiyuki Matsuki
Life of this patent
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Abstract
The invention relates to precluding the shortcomings intrinsic to the conventional unburned carbon-containing refractory bricks, i.e., oxidization under high temperature conditions and the incidental decarbonization, the phenomenon of exfoliation and detachment of the fragile layers, and more particularly to obtaining thereby unburned carbon-containing refractory bricks having the high properties by causing refractory brick material comprising substantially more than 1 weight % carbon to contain 1-10 weight % aluminum powder and/or magnesium powder each independently or in a mixture thereof, and/or 0.5-6 weight % silicon powder.
Claims8
Unburned carbon-containing refractory bricks consisting essentially of 5-75 weight % of a carbonaceous material, 1-10 weight % of a metal powder selected from the group consisting of aluminum powder, magnesium powder or mixtures thereof, and wherein the residual portion of the brick consists essentially of an inorganic refractory material.
Unburned carbon-containing refractory bricks consisting essentially of 5-75 weight % of a carbonaceous material, 1-10 weight % of a metal powder selected from the group consisting of aluminum powder, magnesium powder or mixtures thereof, 0.5-6.0 weight % silicon powder, and wherein the residual portion of the brick consists essentially of an inorganic refractory material.
A wear lining structure of a furnace made of unburned carbon-containing bricks which bricks consist essentially of 5-75% of a carbonaceous material, 1-10% by weight of a metal powder selected from the group consisting of aluminum powders, magnesium powders or mixtures thereof and wherein the residual portion of the brick consists essentially of an inorganic refractory material.
Dependencies are inferred from the claim text.