nanosized titanium dioxide factories

The production process within these factories is intricate and requires precise control over chemical reactions. First, the raw rutile ore is extracted from mines and then crushed into a fine powder. This powder undergoes a series of leaching processes to remove impurities. Afterward, it is subjected to the chlorination process, where it reacts with chlorine gas at high temperatures to produce titanium tetrachloride. This compound is then refined further through vapor deposition or oxidation to yield high-purity titanium dioxide.

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Lithopone, C.I. Pigment White 5, is a mixture of inorganic compounds, widely used as a white pigment powder. It is composed of a mixture of barium sulfate and zinc sulfide. These insoluble compounds blend well with organic compounds and confer opacity. It was made popular by the cheap production costs, greater coverage. Related white pigments include titanium dioxide, zinc oxide (zinc white), zinc sulfide, and white lead.[1]

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