Method of processing aluminous ores

Details Method of processing aluminous ores Method of processing aluminous ores

C - Chemistry, Metallurgy

01

F

23/167

C01F 7/56 (2006.01) C01F 7/60 (2006.01) C01G 49/12 (2006.01) C22B 1/08 (2006.01) C22B 21/00 (2006.01)

Patent

CA 1115489

ABSTRACT OF THE DISCLOSURE A method of producing aluminum chloride from aluminous materials containing compounds of iron, titanium and silicon comprising reacting the aluminous materials with carbon and a chlorine-containing gas at a temperature of about 900° K to form a gaseous mixture containing chlorides of aluminum, iron, titanium and silicon and oxides of carbon; cooling the gaseous mixture to a temperature of about 400°K or lower to condense the aluminum chlorides and iron chlorides while titanium chloride and silicon chloride remain in the gas phase to effect a separation thereof; heating the mixture of iron chorides and aluminum chlorides to a temperature of about 800°K to form gaseous aluminum chlorides and iron chlorides; passing the heated gases into intimate contact with aluminum sulfide to precipitate solid iron sulfide and to form additional gaseous aluminum chlorides; and separating the gaseous aluminum chloride from the solid iron sulfide.

363013

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