Process for selectively removing molybdenum from liquid mixtures containing it together with vanadium
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United States of America Patent
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Aug 14, 2007
Grant Date -
Dec 30, 2004
app pub date -
May 14, 2002
filing date -
May 25, 2001
priority date (Note) -
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Abstract
Process for selectively removing molybdenum from liquid mixtures containing it, in a quantity greater than (200) mg/l, together with vanadium characterized in that it comprises the following steps: bringing the liquid mixture to a pH of less than (3); adding a solution of an alkaline xanthate to the solution so that the molar ratio molybdenum/alkaline xanthate ranges from (1/4) to (1/8), maintaining the pH constant by means of the addition of an inorganic acid; stirring the mixture causing the precipitation of the molybdenum present in the mixture.
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