Method of fluidizing acid cupola slag

Details Method of fluidizing acid cupola slag Method of fluidizing acid cupola slag

1974-12-23

1976-10-12

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 43, 75 94, C21B 504

Patent

active

039855465

ABSTRACT:
A composition and method is disclosed for fluxing and fluidizing the slag in an acid-operated cupola, the method comprising adding to the charge therein a fluxing material effective to provide, by weight analysis of the slag, 30-42% CaO, 41-44% SiO.sub.2, 7-15% Al.sub.2 O.sub.3, 0.5-4.0 TiO.sub.2, 1.6-3.2% MnO, less than 0.05% P.sub.2 O.sub.5 and less than 1% sulfur. A fluxing composition is disclosed which is comprised by weight percentage of the metal charge comprising, when used with a limestone or a dolomitic limestone charge: 1.5-3.5% limestone or dolomitic limestone, 0.5-1.5% FeO . Fe.sub.2 O.sub.3 . TiO.sub.2.

REFERENCES:
patent: 1743885 (1930-01-01), Gardner
patent: 3702182 (1972-11-01), Leyshon
patent: 3721547 (1973-03-01), Dvorak et al.

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