Purification of wet process phosphoric acid

Details Purification of wet process phosphoric acid Purification of wet process phosphoric acid

C - Chemistry, Metallurgy

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C01B 25/237 (2006.01) C01B 25/238 (2006.01) C01B 25/46 (2006.01)

Patent

CA 1215523

PRECIS DE LA DIVULGATION: L'invention concerne un procédé de purification en métaux lourds et notamment en molybdène d'un acide phos- phorique de voie humide. Selon ce procédé de l'invention on traite l'acide à l'état dilué par un sulfure ou par de l'hydrogène sulfuré. Ce procédé s'applique tout particu- lièrement pour la préparation d'acide phosphorique de voie humide de qualité alimentaire.

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