Cyclic process for the preparation of barium sulphate and...

Details Cyclic process for the preparation of barium sulphate and... Cyclic process for the preparation of barium sulphate and...

C - Chemistry, Metallurgy

01

F

C01F 11/46 (2006.01) C01B 25/45 (2006.01)

Patent

CA 2693607

The present invention relates to a cyclic process for the preparation of barium sulphate and lithium-iron phosphate comprising (i) preparing an aqueous solution containing lithium and sulphate ions and (ii) adding solid barium hydroxide at a temperature of more than 50°C and (iii) wherein the barium hydroxide is added over a period of less than 15 minutes. The present invention also relates to barium sulphate obtainable by the process according to the invention.

L'invention concerne un processus cyclique pour la fabrication de sulfate de baryum et de phosphate de fer de lithium, consistant (i) à mettre en oeuvre une solution aqueuse contenant des ions lithium et des ions sulfate, et (ii) à additionner de l'hydroxyde de baryum solide à une température supérieure à 50° C, (iii) l'addition d'hydroxyde de baryum étant réalisée sur un intervalle de temps inférieur à 15 minutes. L'invention concerne également du sulfate de baryum pouvant être obtenu au moyen du procédé selon l'invention.

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