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The <strong>TiO</strong> 2 sulfate process1Slag, Ilmenite,or black oreRing ballmill123Dissolving the raw material containingthe titanium dioxide in concentratedsulfuric acid;precipitation of hydrous titanium dioxidefrom the acidic solution by dilution andboiling (hydrolysis);leaching out of contaminants;45calcination (particle sizeincrease) at temperatures ofaround 1,000 degrees Celsius;purification and subsequentcoating of the pigment withorganic and inorganic oxides2 345WaterliquidsolidSulfuricacidReactor(liquid/solid)Titaniumoxide hydrate(Hydrolysis)Calcination(natural gas, ~ 950°C)TreatmentMilling(jet steam mill)Packaging28
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