The paper industry is the third largest user of titanium dioxide, as a paper filler, mainly used in high-grade paper and thin paper. Adding titanium dioxide to the paper can make the paper have better whiteness, good gloss, high strength, thin and smooth, no penetration during printing, and light weight. Titanium dioxide for papermaking generally uses an anatase-type titanium dioxide which has not been surface-treated, and can function as a fluorescent whitening agent to increase the whiteness of the paper. However, laminated paper requires the use of surface treated rutile titanium dioxide to meet the requirements of light and heat resistance.
Titanium dioxide is also an indispensable white pigment in advanced inks. The ink containing titanium dioxide is durable, does not change color, has good surface wettability, and is easy to disperse. The titanium dioxide used in the ink industry has a rutile type and an anatase type.
The textile and chemical fiber industries are another important application area for titanium dioxide. Titanium dioxide for chemical fiber is mainly used as a matting agent. Since the anatase type is softer than the gold-red type, an anatase type is generally used. Titanium dioxide for chemical fiber generally does not require surface treatment, but some special varieties need to be surface treated in order to reduce the photochemical action of titanium dioxide and avoid degradation of the fiber under the photocatalytic action of titanium dioxide.
The enamel industry is an important application field of titanium dioxide. The enamel grade titanium dioxide has high purity, good whiteness, fresh color, uniform particle size, strong refractive index and high achromatic power, and has strong opacity and The opacity makes the coating after coating thin, smooth and acid resistant, and can be mixed with other materials evenly in the enamel manufacturing process, without agglomeration and easy to be melted.
The ceramic industry is also an important application field of titanium dioxide. The ceramic grade titanium dioxide has the characteristics of high purity, uniform particle size, high refractive index, excellent high temperature resistance, and ash retention at 1200 °C for 1 hour. High opacity, thin coating and light weight, widely used in ceramics, construction, decoration and other materials.
