C - Chemistry – Metallurgy – 21 – C
Patent
C - Chemistry, Metallurgy
21
C
53/355, 39/62, 3
C21C 5/52 (2006.01) C22B 4/08 (2006.01) F27B 3/04 (2006.01) F27B 19/00 (2006.01) F27D 99/00 (2010.01) F27D 3/16 (2006.01)
Patent
CA 1043575
ABSTRACT This invention relates to a method of melting metals, characterized in that melting and possible further heating of the metal is carried out by a hot reducing gas, which has been heated by electrical energy, and that pre- heating of the metal to melting temperature is carried out by burning a fuel, which completely or partly consists of said reducing gas. This invention also relates to a device for carrying out the method, characterized by that it comprises a pre-heating zone, which can be charged by the metal which is to be melted, and to which an oxygen containing gas and possibly additional fuel can be supplied, and a melting zone to which a reducing gas which has been heated in one or more plasma burners can be supplied and which has such a connection to the pre-heating zone that the gas escaping from the melting zone can be introduced in the pre-heating zone and that the metal which is pre-heated in the pre-heating zone can be introduced in the melting zone. According to the present invention, melting of metal can be carried out with the least possible energy consumption in combination with a low total energy cost and a comparatively low investment cost.
220433
Na
Skf Industrial Trading And Development Company B.v.
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