Refining additive and process for preparing same

Details Refining additive and process for preparing same Refining additive and process for preparing same

1979-03-22

1980-08-12

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 53, 75130R, C21C 700

Patent

active

042171334

ABSTRACT:
An additive for use in metal-refining, particularly desulfurization of pig iron, inoculation for spheroidal graphite cast-iron and dephosphorization of various metals, is prepared by a process wherein a composition comprised of (a) magnesium carbonate and/or magnesium oxide and (b) calcium carbonate and/or calcium oxide is maintained at a temperature of from 1,600.degree. to 4,000.degree. C. in the presence of a carbonaceous material in a non-oxidizing atmosphere, and then, the reaction product in the form of dust is suddenly cooled.

REFERENCES:
patent: 443898 (1890-12-01), Colquhoun
patent: 2798048 (1957-07-01), Magri
patent: 3964899 (1976-06-01), Jones
patent: 4067729 (1978-01-01), Holzgruber
patent: 4137072 (1979-01-01), Kawakomi

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