Method of ore reduction with an arc heater

Details Method of ore reduction with an arc heater Method of ore reduction with an arc heater

1976-06-23

1977-12-06

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 11, 75 38, 751305, 751335, C21C 552

Patent

active

040614921

ABSTRACT:
A two-stage process for converting metal-bearing ore to a metal or an alloy characterized by the steps of, first, partially reducing an ore having a relatively higher valence state to an intermediate product of a lower valence and, second, treating the intermediate product in an arc heater having a carbon-bearing reductant atmosphere in an amount in excess of that required to reduce the intermediate product to the metal form, whereby to produce a substantially pure metal or an alloy, such as ferrochromium, and an unused excess reducing gas or derivative thereof which are recirculated to the first step to assist in the partial reduction.

REFERENCES:
patent: 3140168 (1964-07-01), Halley et al.
patent: 3862834 (1975-01-01), Von Waclawiczek et al.

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