Process for processing cast iron suitable for foundry moulding

Details Process for processing cast iron suitable for foundry moulding Process for processing cast iron suitable for foundry moulding

1977-12-20

1981-02-24

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 40, 75 48, 75130R, C22C 3700

Patent

active

042525594

ABSTRACT:
The process comprising supplying an electric arc furnace with ferrous products and fluxes so as to form a bath of metal and slag and adding carbon to the bath of metal. The ferrous products are pre-reduced ores which are continuously introduced into the furnace between the electrodes of the furnace in the course of the formation of the bath. A carburizing agent is introduced to bring the carbon content of the bath to a value between 1.7 and 6.7%. Thereafter, the slag is removed. If desired, the carbon content of the cast iron can be brought to the desired value by adding further carburizing agent. The cast iron is then poured from the furnace.

REFERENCES:
patent: 2855336 (1958-10-01), Curry
patent: 3042513 (1962-07-01), Crome

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