Patent ID: 6802886
Filing Date: 2004-10-12
Classification: C22B,Y02P

Abstract:
A process for making metallized iron by reduction of iron oxide from green briquettes, said process consisting essentially of:combining in a dry form materials forming a mixture consisting of iron bearing material, a reductant, cellulose fiber, and 0% to 5% added water by weight of the mixture; compacting the mixture under high pressure into green briquettes with high crush strength; direct feeding the green briquettes into a rotary hearth furnace; and heating the green briquettes initially in an oxidizing atmosphere followed by further heating in an inert or reducing atmosphere at a temperature from about 1000Â° C. to a about 1550Â° C. for a period of 6 to 20 minutes, therein metallizing iron forming metallized briquettes with good crush strength.