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journals on dephosphoriation of iron ore

A process has been proposed for the treatment of apatite concentrate obtained from the dephosphoriation of iron ore. In this process the apatite is acidulated by HNO3 to produce high-purity H3PO4. The crude acid obtained is at least equivalent to if not better than the typical wet process acid. The H3PO4 is purified by extraction and concentrated by evaporation.

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