Classification of Titanium Dioxide
According to the production process route is divided into: sulfuric acid method titanium dioxide and chloride titanium dioxide
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Sulfuric acid method uses titanium or acid-soluble titanium slag and sulfuric acid reaction acid hydrolysis reaction, to obtain titanyl sulfate solution, after hydrolysis to obtain metatitanic acid precipitation; and then enter the rotary kiln calcined to produce titanium dioxide. Sulfuric acid can produce both anatase titanium dioxide and rutile titanium dioxide.
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Chlorination is the use of titanium-containing raw materials, titanium chloride slag, or synthetic rutile, or natural rutile, etc. react with chlorine to generate titanium tetrachloride, purified by distillation, and then in the gas phase oxidation; after rapid cooling, Titanium dioxide was obtained by gas-solid separation.
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Divided into crystalline forms: Anatase and Rutile
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Anatase titanium dioxide is fine, but its coloring power is only rutile. In terms of weatherability, the anatase titanium dioxide test piece is cracked or fragmented after only one year and the rutile titanium dioxide is added. The film, after only a decade, has only a small change in appearance. Since the rutile titanium dioxide has good tinting strength and weather resistance, it is preferable to use rutile titanium dioxide for plastic coloring.
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Divided by use of objects: pigment titanium dioxide and special titanium dioxide
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Pigment titanium dioxide is an indispensable white pigment in advanced inks. The ink containing titanium dioxide is durable without discoloration, has good surface wetting and is easy to disperse. The titanium dioxide used in the ink industry is rutile and anatase. Other special titanium dioxide include coatings, plastics, paper, cosmetics, chemical fiber, electronics, ceramics, enamel, welding rods, alloys, glass and many other fields.
