C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
C01F 7/46 (2006.01) C01F 7/02 (2006.01) C01F 7/34 (2006.01)
Patent
CA 2671678
The present invention relates ways to increase the output of a high quality product from the aluminum hydroxide recovery processes such as the Bayer process. The invention is a method of increasing the size of precipitated aluminum hydroxide while not reducing the total production amounts. The invention relates to the use of a crystal growth modifier compositions added to the precipitation liquor to increase the particle size distribution of the precipitated alumina trihydrate.
La présente invention concerne des manières destinées à faire augmenter le rendement d'un produit de grande qualité à partir des procédés de récupération d'hydroxyde d'aluminium tels que le procédé de Bayer. L'invention est un procédé d'augmentation de la taille de l'hydroxyde d'aluminium précipité sans réduire les quantités de production totales. L'invention concerne l'utilisation d'une composition de modification de la croissance des cristaux ajoutée à la liqueur de précipitation pour faire augmenter la distribution de la taille de particules du trihydrate d'alumine précipité.
Kouznetsov Dmitri L.
Liu Jianjun
Slinkman David H.
Borden Ladner Gervais Llp
Nalco Company
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