F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
39/3, 53/352
F27B 1/10 (2006.01) C21B 13/00 (2006.01) C22B 5/10 (2006.01) C22B 5/12 (2006.01)
Patent
CA 1327274
ABSTRACT OF THE DISCLOSURE: Disclosed is a method for recovering a metal or metal alloy, in particular a ferro-alloy, by reduction of a metal oxide in a reduction zone formed by a coal bed by passing a reducing gas through the reduction zone. To obtain a metal that has a high affinity of oxygen, lumpy oxidic charging material is guided under the action of gravity through the coal bed consisting of three static bed layers, wherein a bottom layer of degassed coal covering a liquid sump of reduced metal and slag is provided. Furthermore, oxygen or an oxygen-containing gas is fed into a middle layer to form a hot reducing gas consisting essentially of CO, and combustion gases of carbon particles and oxygen or oxygen-containing gas are fed into a top layer.
550403
Kepplinger Werner L.
Ottenschlager Erich
Deutsche Voest-Alpine Industrieanlagenbau G.m.b.h.
Fetherstonhaugh & Co.
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