Additional seed crystal hydrolysis method for titanium dioxide

The invention discloses a titanium dioxide external seed crystal hydrolysis method, and belongs to the technical field of titanium dioxide production. In order to solve the problems that in the prior art, stirring in the crystallization process easily causes different sizes of crystal particles and large particle size distribution, so that the covering power is influenced, the crystallization speed is slow if stirring is not carried out, and crystallization is possibly insufficient, the stirring speed is reduced in the hydrolysis process, so that the stirring speed is reduced, and the stirring speed is reduced. The continuous stirring is changed into intermittent stirring, the effects of uniformly distributing the seed crystals to all parts of the titanium liquid and accelerating crystallization are achieved, the particle size distribution cannot be increased, and the hydrolysis rate of the titanium liquid is improved by optimizing the alkali-titanium ratio of the hydrolyzed seed crystals and optimizing the p