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Technology Profile: Titanium Dioxide Production

By Intratec Solutions |

This column is based on “Titanium Dioxide Production Process – Cost Analysis,” a report published by Intratec. It can be found at: www.intratec.us/analysis/titanium-dioxide-production-cost. Titanium dioxide (TiO2) is the naturally occurring oxide of titanium, and is found particularly in rutile ores. The compound has great technological importance: it is a commodity chemical widely used in paints, coatings, plastics, food, cosmetics and pharmaceuticals. The vast majority of titanium ore is processed into titanium dioxide, the most used titanium product. The process The process under analysis comprises three major sections: (1) ilmenite processing; (2) titanium dioxide hydration; and (3) titanium dioxide treatment (Figure 1). Figure 1. The diagram shows the production of titanium dioxide via the sulfate process[/caption] Ilmenite processing. Initially, ilmenite ores are dried to a moisture content of less than 0.1% and ground to give a mean particle size of less than 40 mm. This prevents heating and premature reactions downstream. The finely ground, titanium-bearing ore is dissolved in sulfuric acid and water, forming a solution rich in metal sulfates. The digester effluent is dissolved in cold water, forming a solution…
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