Direct production of copper metal

Direct production of copper metal

Direct reduced iron

Direct reduction of iron

Direct reduction of iron oxide containing material with biofuel

Direct reduction of metallic oxides

Direct reduction of molybdenum oxide to substantially metallic m

Direct reduction of ores and concentration of metallic values

Direct reduction process for iron ores with fluidized bed system

Direct reduction process for producing metallic iron

Direct reduction process for producing reduced iron

Direct reduction process in a rotary kiln

Direct reduction process in reactor with hot discharge

Direct reduction reactor with hot discharge

Direct reduction rotary kiln with improved air injection

Direct reduction steelmaking process

Direct smelting or zinc concentrates and residues

Direct smelting process for non-ferrous metal sulfide ores

Direct smelting process with a thermal plasma

Direct use of sulfur-bearing nickel concentrate in making Ni all