Abstract: A method of processing manganese ore by adding the ore to an aqueous solution of acid and H.sub.2 O.sub.2 to form a leach pulp. The leach pulp is agitated for a predetermined time period at predetermined temperatures. The leach pulp is then separated into a solid fraction and a liquid fraction containing solubilized metals. The solubilized metals are then recovered from the liquid fraction.
Type:
Grant
Filed:
August 8, 1988
Date of Patent:
October 10, 1989
Assignee:
The United States of America, as Represented by the Secretary of the Interior
Abstract: An apparatus for filling caulking tubes in a clean manner with a liquid viscous composition wherein in the passage tube from which the viscous composition passes into the caulking tube there is attached a suck-back means comprising an air activated piston in a cylinder piston in a cylinder which retracts away from the passage tube when material is not being forced into the caulking tube so as to create a suction effect on the material in the passage tube and prevent it from leaking from the passage tube.
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