C - Chemistry – Metallurgy – 01 – G
Patent
C - Chemistry, Metallurgy
01
G
C01G 23/07 (2006.01)
Patent
CA 2559805
Methods of improving the grindability of raw titanium dioxide produced by high temperature oxidation of titanium tetrachloride comprise quenching the oxidation reaction products with an essentially inert fluid to reduce the degree of aggregation of the titanium dioxide particles and thereby improve the grindability of the raw titanium dioxide. The essentially inert fluid can comprise recycled cooled gaseous reaction products from which the titanium dioxide particles have been separated.
L'invention concerne des procédés permettant d'améliorer la broyabilité de dioxyde de titane brut produit par une oxydation haute température de tétrachlorure de titane. Ces procédés consistent à tremper les produits de réaction d'oxydation dans un liquide sensiblement inerte afin de réduire le degré d'agrégation des particules de dioxyde de titane, ce qui permet d'améliorer la broyabilité du dioxyde de titane brut. Le liquide sensiblement inerte peut contenir des produits de réaction gazeux recyclés refroidis à partir desquels ont été séparées les particules de dioxyde de titane.
Flynn Harry Eugene
Martin Robert O.
Natalie Charles A.
Borden Ladner Gervais Llp
Tronox Llc
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