Förfarande för framställning av titandioxidpigment

摘要

1. A process for the production of TiO2 pigments by the sulfate method by digestion of titanium-containing raw materials with sulfuric acid, hydrolysis of the titanyl sulfate formed, purification of the hydrolyzate and calcination of the purified hydrolyzate in rotary kilns, characterized in that the calcination conditions are regulated by adjustment of the SO2 content of the waste calcination gases issuing from the rotary kiln.