Method of treating waste produced during stainless steel making

Details Method of treating waste produced during stainless steel making Method of treating waste produced during stainless steel making

1975-06-12

1977-01-25

Ozaki, G.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 3, 75 25, C21C 552

Patent

active

040049183

ABSTRACT:
A method of treating waste produced during stainless steel making is disclosed. The method comprises the steps of kneading a sludge cake with a mixture of dust and scale to obtain a kneaded mass, adding an organic binder and eventually adding water with an inorganic binder to said kneaded mass, shaping said kneaded mass into a briquette, and heating said briquette at a low temperature. The briquette obtained can be used as a ferroalloy making raw material.
Metal oxides contained in the briquette are reduced by a dry reduction refining added with a carbonaceous reducing agent and eventually with a flux to separate usable metals.

REFERENCES:
patent: 1312218 (1919-08-01), Vogel
patent: 1536033 (1925-04-01), Stillman
patent: 2176689 (1939-10-01), Udy
patent: 2582386 (1952-01-01), Komarek
patent: 2582469 (1952-01-01), Udy

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