METHOD FOR PRODUCING A POORLY SOLUBLE CALCIUM-ARSENIC COMPOUND
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United States of America Patent
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Dec 26, 2013
app pub date -
Mar 7, 2012
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Mar 9, 2011
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Abstract
The invention relates to a method for precipitating pentavalent calcium arsenate from an acidic solution, in which arsenic is at least partially in trivalent form. The acidic solution is neutralised before being routed to an arsenic oxidation stage,and a poorly soluble calcium-arsenic compound is precipitated from the solution, in which all the arsenic is pentavalent.
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