Utilization of strontium aluminate in steelmaking
AssigneeExothermic Distribution Corporation
InventorPierre Vayda
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Abstract
Novel utilizations of strontium aluminate, a by-product of the manufacture of strontium, are disclosed in connection with the art of steelmaking. It is useful as a synthetic slag covering for molten iron or steel, as well as in the foaming slag practice, as a backfilling material for spaces between the safety lining and the working lining of a ladle, as a major component for a blend from which are made pellets or briquettes useful as a slag conditioner, as an additive to calcium aluminate which has the effect of substantially lowering the melting point of calcium aluminate, as a tracer material to determine the source of impurities, and as a binder to recycle metal-containing dust.
Claims17
A method of treating molten metal in a ladle, the method consisting of distributing over the surface of the molten metal a material which includes strontium aluminate.
In the handling of molten metal in a ladle which has both a safety lining and a working lining, a method of maintaining the ladle by backfilling any space between the two linings with a material which includes strontium aluminate.
A method of making pellets or briquettes useful as a slag conditioner in steelmaking, said method comprising a step of forming said pellets or briquettes from a starter blend comprising strontium aluminate as a majority component.
A method of lowering the melting point of calcium aluminate by from about 50.degree. C. to about 75.degree. C. the method comprising a step of adding from about 5% to about 15% by weight of strontium aluminate to said calcium aluminate.
Dependencies are inferred from the claim text.