Patent ID: 8679222
Filing Date: 2014-03-25
Classification: C21B,Y02P

Abstract:
1. A process for producing sponge iron, the process includes the steps of: i) preparing a sandwich of at least two layers wherein the at least two layers includes a first layer of an iron oxide source and second layer of a mixture of an iron oxide source and carbon source; ii) subjecting the sandwich of at least two layers in step (i) to a heating process in a non-oxidative environment at a temperature between 950° C. to 1900° C. so that a predominant reaction occurs between iron oxide in the iron oxide source and carbon in the carbon source to produce said sponge iron, said predominant reaction dependent on a predominant oxidation state of the iron oxide; and wherein the carbon source in the second layer is equal to or more than stoichiometric weight of carbon necessary to reduce said iron oxide according to said predominant reaction; and wherein the sandwich of the at least two layers is placed in a moving carrier and moved to a reactor for the heating process.