Aluminum Company of America

Nicholas Kloap

Larry K King

Lester L Knapp

Ronald C Schoener

John A Remper

Bernard M Starner

Method for directly desubliming gaseous aluminum chloride to solid form in a fluidized bed of solid particles of aluminum chloride at controlled temperatures for production of selectively constituted solid particulate aluminum chloride.

Process for recovery of aluminum chloride

Method and apparatus for directly desubliming gaseous aluminum chloride to solid form in a fluidized bed of solid particles of aluminum chloride at controlled temperatures for production of selectively constituted solid particulate aluminum chloride.

Solid particulate lobular AlCl.sub.3

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

Fluidized bed desubliming apparatus for directly desubliming gaseous aluminum chloride to solid form in a fluidized bed of solid particles of aluminum chloride in a chamber at controlled temperatures for production of selectively constituted solid particulate aluminum chloride, for example including cooling means within the bed for maintaining such controlled temperatures, means for introducing such gaseous aluminum chloride into the bed remote from all contact surfaces within the chamber which are below the ambient desublimation temperature, gas distribution inlet means, residual gaseous effluent outlet means and means for withdrawing aluminum chloride particles from the bed.

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Benton, AR, United States of America

Nicholas Kloap