Process for producing aluminum phosphate

Details Process for producing aluminum phosphate Process for producing aluminum phosphate

C - Chemistry, Metallurgy

01

B

C01B 25/36 (2006.01)

Patent

CA 2692750

The present invention provides improved methods for producing the aluminum adjuvant AlPO4. In one aspect, the present invention provides a method for producing aluminum phosphate which comprises the steps of mixing a solution of aluminum chloride and a solution of sodium phosphate tribasic to produce an aluminum phosphate precipitate, wherein the improvement comprises settling the aluminum phosphate precipitate at a temperature in the range of about 50° C to about 70° C. In another aspect, the present invention is directed to methods for producing aluminum phosphate within a closed system.

La présente invention concerne des procédés améliorés pour produire l'adjuvant d'aluminium AlPO4. Selon un aspect, la présente invention propose un procédé de production de phosphate d'aluminium qui comprend les étapes consistant à mélanger une solution de chlorure d'aluminium et une solution de phosphate d'aluminium tribasique pour produire un précipité de phosphate d'aluminium. L'amélioration comprend la décantation du précipité de phosphate d'aluminium à une température dans une plage d'environ 50 à environ 70°C. Selon un autre aspect, la présente invention concerne des procédés de production de phosphate d'aluminium en système fermé.

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