| 摘要 |
The invention relates to a process for nanodispersed titanium dioxide obtaining that may be used as pigment in the varnish-and-paint materials, as well as catalyst in different branches of industry. The process includes treatment of the 20à50% aqueous solution of titanium tetrachloride with ammonia, extrusion of the obtained complex solution through a system of microholes with jet interruption into a liquid cooling agent with formation of titanium-containing cryohydrate complex spherical particles, subsequent fluidization of the supercooled particles and hydrolytic decomposition, with formation of titanium dioxide particles, into an airflow heated up to the temperature of 200à500?C. At the same time, as liquid cooling agent is used liquefied nitrogen.
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