Patent ID: 6426036
Filing Date: 2002-07-30
Classification: C21B,Y02P

Abstract:
A gravitational direct reduction device to obtain iron starting from iron oxide, comprising:a reduction and carburation reactor wherein the iron oxide is suitable to be reduced to metal iron and to be then transformed into iron carbide in any one of its forms or into a mixture of these forms, wherein below said reactor a cooling and passivation container is arranged for cooling and passivating said iron carbide, and wherein connecting means are interposed between said reactor and said container to regulate the transfer of the hot iron carbide from said reactor to said container; and wherein said cooling and passivation container comprises a cylindrical zone and at least a diffusion device arranged below said cylindrical zone and able to diffuse a cooling gas to cool the product, through direct contact, in the segment between said cylindrical zone and said diffusion device, from about 550-650Â° C. to about 90Â° C.