Special cladding titanium dioxide for ink and preparation method of titanium dioxide

The invention provides special cladding titanium dioxide for ink and a preparation method of the titanium dioxide. The preparation method includes adding organic solute into rutile titanium dioxide yet to be treated by surface treatment after screening to make pulp, adding surfactant into the titanium dioxide pulp, filtering the treated titanium dioxide and performing atomizing mixed cladding of organic alumina sol, adding special organosilicone of proper viscosity into the cladded titanium dioxide pulp for organic surface treatment, drying the cladded titanium dioxide pulp after surface treatment to obtain cladding crystal, and crushing the cladded crystal to obtain the product eventually. Reaction is mostly performed in the mild condition, the process is simple and the cladding titanium dioxide having more uniform cladding effect and high dispersion and stability in the organic solvent can be obtained. In addition, the titanium dioxide is good in luster, and weather-proof, and excellent in binding force, di