Titanium Dioxide Making Plant

Abstract

Titanium dioxide is the most widely used white pigment. Its predominance is due to the high refractive index, lack of colour and chemical inertness. High refractive index in the visual portion of spectrum results in strong scattering of visible radiation of particles in the correct size range. This provides the opportunity for producing film with high opacity. Among those substances that are available in quantities sufficient to meet the requirements of industry, no other material has the high refractive index and other desired pigmentary properties possessed by titanium dioxide. The manufacture of titanium dioxide pigments results in the production of either the anatase or rutile crystal structure, depending upon the processing. Rutile pigments have the greater hiding power and also an improved durability -or less chalking -in paint medium. Compared with anatase pigment, they have the disadvantages of costing rather more to produce and a slight inferiority in color.