Duval Corporation

George E Atwood

Abraham Sadan

Archibald W Fletcher

Melvin S Cook

Douglas E Cochran

Phillip O Tyree

Charles Burnett

A method of recovering boric acid from a subterranean deposit of colemanite ore by solution mining, comprises:

Cyclic solution mining of borate ores

In an electrolysis system capable of producing particulate crystalline product having limited adherence to the cathodes, a process and apparatus for the continuous recovery of said product directly from the electrolytic cell tank substantially uncontaminated by adhering electrolyte comprising the agitation of the electrolyte to effectively influence and contribute to the control of the crystalline product size and density as well as the structural competence of the dendrites and to cause said product to separate from the cathodes, the collection of the particulate crystalline product on a conveyor transport system located in the bottom part of the electrolytic cell tank, the continuous removal of the particulate crystalline product from the electrolytic cell tank by means of the conveyor transport system, and the transportation of the crystalline particulate product through a washing zone prior to its removal from the electrolytic cell tank to substantially displace the electrolyte liquor from the particulate crystalline product.

Process and apparatus for the recovery of particulate crystalline

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Tucson, AZ, United States of America

George E Atwood