Sonic method and apparatus for heap leaching

Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium

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75 2, 366108, 366128, 366600, 422127, 422128, 204193, 266101, 266114, 266134, 266166, C22B 300

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active

046523090

ABSTRACT:
A liquid impervious covering such as a plastic membrane or a concrete flooring is installed over an extensive substantially level area of ground and mined metal ore heaped onto this covering to form a mound. A leachant liquid solution is poured onto the ore and permitted to thoroughly penetrate the ore material. This end result is achieved either by forming a crater on the top of the ore material which is filled with the leachant solution which is allowed to ooze through the ore material, or by feeding the solution from sprinklers located around the mound until the ore material is thoroughly wetted. When the ore material has been wetted with the leachant, sonic energy is applied to the ore material by means of a sonically excited elastic pipe or bar member which is lowered into the mound by means of a crane and sonically driven by means of an orbiting mass oscillator. The sonic energy fluidizes the mound causing the leachant to thoroughly penetrate the ore material so that the metal salt in the ore is thoroughly dissolved in such leachant and separated from the parent earthen material.

REFERENCES:
patent: 3525606 (1970-08-01), Bodine
patent: 4017309 (1977-04-01), Johnson
patent: 4168295 (1979-09-01), Sawyer
patent: 4526615 (1985-07-01), Johnson
patent: 4556467 (1985-12-01), Kuhn et al.
patent: 4566800 (1986-01-01), Bodine

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