MANUFACTURE OF TITANIUM DIOXIDE BY THE SULPHATE PROCESS

A solution of active nuclei for the hydrolysis of titanium sulphate and for the rutilisation of titanium dioxide in the manufacture of titanium dioxide in tutile form in the method via sulphate is prepared by transferming titanium tetrachloride into a compound of the formula Ti(OH)xCly, wherein x ra...

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Hauptverfasser:	GHIRGA, MARCELLO, PICCOLO, LUIGI, PAOLINELLI, ANTONIO
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS INORGANIC CHEMISTRY METALLURGY
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Beschreibung
Zusammenfassung:	A solution of active nuclei for the hydrolysis of titanium sulphate and for the rutilisation of titanium dioxide in the manufacture of titanium dioxide in tutile form in the method via sulphate is prepared by transferming titanium tetrachloride into a compound of the formula Ti(OH)xCly, wherein x ranges from 1 to 3, y from 3 to 1 and x + y is equal to 4 by contact with steam in the vapour phase, and contacting the reaction products with an aqueous solution of sodium hydroxide to from an aqueous suspension of titanium hydroxide having a TiO2 content of from 10 to 30 grams/liter and a pH value of from 3 to 4.