Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Reexamination Certificate
2011-06-21
2011-06-21
Wyszomierski, George (Department: 1733)
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
C075S741000, C075S743000, C075S744000, C252S183110, C252S183140
Reexamination Certificate
active
07964015
ABSTRACT:
An improved process and composition for the extraction of metal from a metal-laden ore, soil or rock is provided. A liquid, three-component aqueous lixiviant comprises water, an alkali metal salt and a low pH acidic composition. A four-component aqueous lixiviant comprises water, a low pH acidic composition, an alkali metal salt and an acid having a pH value less than 2. Both lixiviant compositions are efficient for extracting metal into a pregnant liquid solution. The pregnant solution is treated by known conventional means, such as filtration, centrifuging or electrolysis to remove the extracted metals. The three-component and four-component aqueous lixiviants of the present invention are non-toxic, meaning, not an irritant or deleterious to humans or the environment and perform, as well as, or better than known toxic cyanide lixiviants. The aqueous lixiviants of the present invention effectively and efficiently extract gold, silver, platinum and other metals from ore laden soil or rock with efficiencies greater than 90%.
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Creasey David H.
Smith, Jr. Edwin B.
Contact Marketing Solutions, LLC
Law Offices of Brian S. Steinberger , P.A.
McGuthry-Banks Tima M
Morlin Joyce P.
Steinberger Brian S.
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