Refractory lining for metallurgical vessel
AssigneeNorth American Refractories Co.
InventorsDonald E. Abrino, John Crooks, Ronald Barrett, Shyam Miglani
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Abstract
A lining for a bottom of a metallurgical vessel, comprising an impact pad having a plurality of close-packed, pre-formed, high-temperature, high-density refractory bricks, the pad having an upper impact surface, and a monolithic slab of a high-temperature refractory material encasing the pad, the slab encasing the pad wherein the upper surface of the impact pad is exposed.
Claims21
A refractory component for protecting a bottom metal shell of a metallurgical vessel, comprising:
- a pre-assembled impact pad comprised of a plurality of pre-formed, high-temperature, high-density refractory bricks held in a close-packed configuration, said pad having an upper impact surface;
- and
- a monolithic slab of a high-temperature cast refractory material encasing said pad, said slab being cast around said pre-assembled impact pad and being dimensioned to form a refractory lining over the bottom of a metallurgical vessel and encasing said pad.
In a metallurgical vessel for receiving and dispensing a molten metal, a refractory component comprised of:
- a pre-assembled impact pad comprised of a plurality of pre-formed refractory bricks held together in a close-packed configuration, said pad having an upper impact surface;
- and
- a monolithic slab of a high-temperature, cast refractory material encasing said pad, said slab being cast around said pre-assembled impact pad and being dimensioned to form a refractory lining over the bottom of a metallurgical vessel and encasing said pad.
A method of forming a refractory component for lining the bottom of a metallurgical vessel, comprising the steps of:
- (a) forming an impact pad by assembling a plurality of pre-formed, high-density, high-temperature refractory bricks into a pre-formed structure wherein said bricks are maintained in a close-packed arrangement and said impact pad is movable as an integral unit;
- (b) positioning said pad at a predetermined location in a cavity defining the bottom of said vessel, said pad having an upper impact surface;
- (c) pouring a high temperature refractory material into a cavity around said pad;
- and
- (d) curing said refractory material to form a monolithic slab wherein said pad is encased within said slab.
A pre-formed impact pad comprised of:
- a plurality of high-density, high-temperature refractory bricks bonded together into a predetermined shape by a bonding composition, said bonding composition comprised of about 60% to 85% by weight of refractory fines having a particle size of less than 100 Tyler mesh (150 μm), and about 15% to 40% by weight of a polymeric resin;
- and
- a plurality of projections extending outwardly from the sides thereof.
A pre-formed impact pad comprised of:
- a plurality of high-density, high-temperature refractory bricks bonded together into a predetermined shape by a bonding composition, said bonding composition comprised of about 60% to 85% by weight of refractory fines having a particle size of less than 100 Tyler mesh (150 μm), and about 15% to 40% by weight of a polymeric resin;
- and
- a plurality of projections extending outwardly from the sides thereof, wherein said projections are refractory bricks oriented to extend from the sides of said impact pad.
Dependencies are inferred from the claim text.