Patent ID: 6224820
Filing Date: 2001-05-01
Classification: C21B,C22B,F27B,F27D,F27M,Y02P

Abstract:
A traveling hearth furnace comprising a horizontally moving hearth, a hearth body disposed above and covering said hearth, a charging device positioned for charging on said hearth combined materials comprising a reducible metal-containing material and a solid reducing material on the hearth, a heating means for heating said combined materials on the hearth to reduce said metal-containing material and make a reduced metal and a slag, and being capable of reducing said metal when heated, to produce said metal plus slag, said charging device and heating means being positioned and operative to form a pattern of spaced depressions in said upper surface of an solid-reducing material, a cooling means for cooling said reduced product and said slag, and a discharging means positioned and operative for discharging said cooled reduced product and said slag, wherein,a preheating zone provided in said furnace for preheating said combined materials to be charged, a reducing zone provided in said furnace for reducing said metal-containing material charged, a melting zone provided in said furnace for melting and reducing said metal-containing material, and a cooling zone provided in said furnace for cooling said molten reduced product and said slag, and wherein said cooling zone is disposed in said furnace between said charging device and said discharging device.