Process for removing manganese from organic solutions of oximes and nickel ore treatment process
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United States of America Patent
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Dec 5, 2000
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Feb 24, 1999
filing date -
Feb 24, 1999
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Abstract
Process for removing manganese values from a solution of a water-immiscible hydrocarbon containing manganese values and a water-insoluble oxime extractant capable of extracting nickel values from aqueous ammoniacal solutions comprising the steps of I) contacting the water-immiscible hydrocarbon solution with a finely divided active metal and an aqueous solution of a strong acid to decrease or complete remove the manganese values from said water-immiscible hydrocarbon solution; and II) separating the stripped hydrocarbon solution from the aqueous solution. The invention also relates to a method for the extraction of nickel from nickel-containing ores in which a content of manganese values is present in which the above process is used.
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