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US 4,022,739 AGranted
Composition for plugging blast-furnace tap-hole
AssigneeTerrac Company Limited
InventorFred Bove
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AssigneeTerrac Company Limited
InventorFred Bove
Estimating the term…
A composition for plugging the tap holes of blast furnaces consists essentially of about 70% to 85% of a mineral component comprising refractory clay, a granular refractory aggregate having a high mechanical strength and a high-carbon mineral material, and a polymerizable hydrocarbon binder comprising a hydrocarbon derivative derived from the distillation of crude petroleum oil and having an initial boiling point higher than 200.degree. C, a thermosetting resin which is stable at temperatures of the order of 200.degree. C and is of such composition that the beginning of the mass setting process can be adjusted from 130.degree. C up, or a combination of such hydrocarbon derivative and resin. The composition may also contain a secondary binder comprising a high-carbon material such as coal tar pitch or petroleum oil pitch which is solid at 20.degree. C, has a high coking capacity and is adapted to mix up with the polymerizable hydrocarbon binder at temperatures within the range of 130.degree. C to 200.degree. C.
Blast-furnace tap-hole plugging mix composition consisting essentially of about 70% to 85% of a mineral component comprising refractory clay, a refractory aggregate having a high mechanical strength and a high-carbon mineral material, and of a polymerizable hydrocarbon binder selected from the group consisting of a hydrocarbon derivative derived from the distillation of crude petroleum oil and having an initial boiling point higher than 200.degree. C, and a thermosetting resin which is stable at temperatures of the order of 200.degree. C and is of such composition that the beginning of the mass setting process can be adjusted from 130.degree. C up, said hydrocarbon derivative comprising at least 5% of said composition.
A plugging composition for the tap-holes of blast-furnaces, which consists essentially of 30% of refractory clay, 35% of sand, 20% of ground porous soft coal and 15% of petroleum oil associated with a phenolic resin.
A plugging composition for the tap-holes of blast-furnaces, which consists essentially of 35% of refractory fire-clay, 30% of sand, 20% of soft coal and 15% of petroleum oil associated with an epoxide resin.
A plugging composition for the tap-holes of blast-furnaces, which consists essentially of 35% of calcinated bauxite, 25% of clay, 10% of hard coal, 15% of ground soft coal and 15% of petroleum oil associated with an indene-coumarone resin.
A plugging composition for the tap-holes of blast-furnaces, which consists essentially of 15% of clay, 10% of soft coal, 50% of magnesia, 10% of graphite and 15% of petroleum oil associated with a phenolic resin.
A plugging composition for the tap-holes of blast furnaces, which consists essentially of 30% of clay, 20% of corundum, 15% of silicon carbide, 15% of hard coal, 5% of coal-tar pitch and 15% of petroleum oil associated with an epoxide resin.
Blast-furnace tap-hole plugging mix composition consisting essentially of a mineral component, a primary binder and a secondary binder in the following proportions:
Dependencies are inferred from the claim text.