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Process of Leaching Copper Ores

Description: Patent for "a method of recovering copper by the electrolysis of copper solutions of any suitable kind, obtained by the lixiviation of the ore" (lines 9-12). The improvement in this method is that almost all the sulfuric acid and other leaching agents are used up prior to the copper going to the electrolysis tanks which increases the amount of copper recovered and the reduction of accumulated biproducts.
Date: October 22, 1918
Creator: Hahn, Albert W.
Partner: UNT Libraries Government Documents Department

Automatic Separating Device.

Description: Patent for an automatic separating device. This device operates with a link that connects the float level at the top of the tank with a valve handle at the bottom of the tank to control discharge from the tank.
Date: January 22, 1918
Creator: Allen, Charles
Partner: UNT Libraries Government Documents Department
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