ES429914A1 - Improvements introduced in a metallurgical method to obtain metal by direct reduction from a metal oxide. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Perfections introduced in a metallurgical method to obtain metal by direct reduction from a metal oxide that is added to molten metal in a metallurgical converter, which is provided with at least one protruding part with a channel in liquid communication with the converter tank said channel having at least one heating zone separated from the tub, the channel into the tub at a level which is below the surface of the molten metal during the operation, said heating zone having a refractory inner lining which is considerably thinner than the lining of the tub, and having means for heating the contents of the zone, by heating by electric induction, to such an extent that a temperature gradient can be established between the content of the zone and the contents of the tub, characterized by injecting the metal oxide, in the form of powder in suspension in a carrier gas, in the meta l, melted from the tank, through a nozzle that passes through the liner of the tank and ends therein at a distance from the openings of the channel, thereby injecting the suspension through said nozzle that the solid particles of oxide metallic particles entrained in the suspension will originate, substantially without entering the heating zone, that the hottest metal located outside the opening (s) of the channel will be rapidly transported, together with the metal oxide, to all points of the metal melting of the tank, where in this way the desired reduction processes at an appropriate temperature can effectively take place. (Machine-translation by Google Translate, not legally binding)