Tap hole mixes
AssigneesNippon Oil Co., Ltd., Shinagawa Refractories Co., Ltd.
InventorsTakao Hirose, Seiichi Uemura
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Abstract
A tap hole mix for blocking the pig iron or steel tap hole of furnaces, comprising refractory material and a binder comprising a petroleum-derived heavy oil having at least 25% Conradson carbon and an aromatic petroleum resin.
Claims20
A tap hole mix comprising (I) 100 parts by weight of at least one refractory material selected from the group consisting of chamotte, pyrophyllite, coke, clay, bauxite, alumina, carborundum and silicon carbide and (II) 15-40 parts by weight of a binder, characterized in that the binder comprises a petroleum-derived heavy oil having at least 25% Canradson carbon and an aromatic petroleum resin in a ratio by weight of 60-95:40-5.
Dependencies are inferred from the claim text.