Class 75/486 - Heating reduction zone by heat conducted through walls of zone

Number	Title	Issue Date
6409790	Method and apparatus for practicing carbonaceous-based metallurgy An energy efficient, coal-based method and apparatus that are environmentally friendly which produce under pressure metallized/carbon product and molten metal directly from abundant coal or other carbonaceous material, and low cost fines (or ore concentra...	06/25/2002
6214085	Method for direct steelmaking This invention relates to making steel directly from ore concentrate and non-coking coal to which flux material is added. The method eliminates numerous steps by reducing the ore with the coal in a sealed chamber and under pressure termed "carbotreating" ...	04/10/2001
3977862	Process for selectively chlorinating the titanium content of titaniferous materials A reduction/chlorination process is provided for the treatment of titaniferous materials such as ilmenite ores. The chlorination is selective in that the titanium constituent of the titaniferous material is chlorinated, but there is no appreciable net yie...	08/31/1976
3941359	Apparatus for direct reduction of iron oxides A method of and apparatus for reducing an oxide of iron such as the oxides which occur in mill scale involves mixing particles of the oxide with particles of a carbonaceous reducing agent and passing the resulting mixing through a conduit disposed in the ...	03/02/1976

PatentStorm