Aluminum Company of America

John A Remper

Larry K King

Noel Jarrett

Warren E Haupin

Lester L Knapp

M Benjamin Dell

Ronald C Schoener

Nicholas Kloap

Marshall J Bruno

Allen S Russell

Bernard M Starner

A method for producing aluminum chloride comprises contacting Al.sub.2 O.sub.3 with a reducing agent and chlorine in a bath of molten metal halides to form aluminum chloride and recovering the aluminum chloride by vaporization.

Production of aluminum chloride

Use of a temperature-controlled heat-exchanger comprising fluidized particles to remove hydrocarbons from gas contaminated therewith and prevent hydrocarbon pollution of the atmosphere.

Anti-pollution method

Recovery of selectively constituted high purity aluminum chloride from the gaseous effluent of the chlorination of sodium contaminated alumina including the steps of purifying such gaseous effluent to provide essentially contaminant-free aluminum chloride in gaseous form in a gaseous carrier through selectively cooling the hot gaseous effluent to a temperature range well below the chlorination temperature but above the ambient condition condensation temperature of aluminum chloride yet sufficient to condense a selective portion of the condensable constituents therein including substantially all of the sodium aluminum chloride values therein, intermediate the steps of passing such gaseous effluent through filtration media to effect the separation of the condensed sodium aluminum chloride values and entrained solid and liquid particles therefrom and condensing high purity aluminum chloride values from the purified residual gaseous effluent to selectively constituted solid form at controlled temperatures.

Recovery of solid selectively constituted high purity aluminum chloride

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Lower Burrell, PA, United States of America

John A Remper