C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 14/10 (2006.01) B03B 1/04 (2006.01) B03B 9/00 (2006.01) B03D 1/008 (2006.01) B03D 1/01 (2006.01) B03D 1/02 (2006.01) C04B 33/04 (2006.01) C09C 1/42 (2006.01)
Patent
CA 2228052
Kaolin clays are conditioned for the removal of colored titaniferous impurities by (A) first mixing the kaolin clay with a collector to condition the impurities, in the absence of a dispersant, but in the presence of sufficient water to yield a mixture having a solids content of at least 65 percent by weight and (B) then deflocculating the kaolin clay mixture at a pH of at least 4.0 with a dispersant in amounts sufficient to yield a kalolin clay slurry which is suitable for subsequent processing to remove colored titaniferous impurities.
On conditionne le kaolinton pour éliminer les impuretés titanifères colorées (a) en mélangeant d'abord le kaolinton avec un collecteur pour conditionner les impuretés en l'absence d'un dispersant mais en présence d'une quantité d'eau suffisant à produire un mélange dont la teneur en matières solides est d'au moins 65 % en poids, et (b) en défloculant le mélange à base de kaolinton, qui aura un pH égal ou supérieur à 4,0, au moyen d'un dispersant utilisé en quantité suffisante pour produire une bouillie de kaolinton se prêtant à un traitement ultérieur destiné à le débarrasser des impuretés titanifères colorées.
Norris Joseph Allen
Yordan Jorge L.
Finlayson & Singlehurst
Thiele Kaolin Company
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