Dissolution method of co precipitate with acid

Details Dissolution method of co precipitate with acid Dissolution method of co precipitate with acid

C - Chemistry, Metallurgy

22

B

C22B 23/00 (2006.01) C22B 3/06 (2006.01) C22B 3/44 (2006.01) C22B 23/06 (2006.01)

Patent

CA 2413207

A dissolution method for Co precipitate containing at least Co and Fe hydroxides using acid, wherein the pH of the processing solution is kept in the range between 0.5 and 2.0, so that the Co dissolves into the processing solution together with the Fe, after which the pH of the processing solution is raised to the range between 2.0 and less than 3.0 to distribute the Fe preferentially into the precipitate.

Divulgation d'une méthode de dissolution de précipité de Co, contenant au moins des hydroxydes de Co et de Fe, au moyen d'acide. Le pH de la solution de traitement est maintenu dans la gamme allant de 0,5 à 2,0, de façon à ce que le Co se dissolve dans la solution de traitement avec le Fe, après quoi le pH de la solution de traitement est élevé entre 2,0 et 3,0 pour distribuer le Fe préférentiellement dans le précipité.

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