Preparation method of highly-dispersed titanium pigment
A high-dispersion technology of titanium dioxide, which is applied in the field of titanium dioxide, can solve the problems of affecting the dispersion of products and increasing costs, and achieve the effect of reducing the cost of steam powder and improving the dispersion
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Embodiment 1
[0017] Abrasive slurry with a concentration of 100g / L is coated with single aluminum inorganic coating. After the coating is completed, wash until the resistivity is ≥ 60Ω·m, and then re-pulp to a concentration of 50g / L, and add 0.1wt% TMP (mass fraction of titanium dioxide), and then ultrasonically dispersed for 3 minutes. After the ultrasonic dispersion is completed, dry and steam powder, the TMP added to the steam powder is 0.1wt% (mass fraction of titanium dioxide), and the gas-solid ratio is 1:1 (ratio to titanium dioxide).
Embodiment 2
[0019] Abrasive slurry with a concentration of 200g / L is coated with silicon-aluminum inorganic coating. After the coating is completed, wash until the resistivity is ≥60Ω·m, and then re-pulp to a concentration of 100g / L, and add 0.2wt% TMP (mass fraction of titanium dioxide), and then ultrasonically dispersed for 30 minutes. After the ultrasonic dispersion is completed, dry and steam powder, the TMP added to the steam powder is 0.2wt% (mass fraction of titanium dioxide), and the gas-solid ratio is 2:1 (ratio to titanium dioxide).
[0020] Inorganic coatings include the following types: single aluminum coating, silicon-aluminum coating, zirconium-aluminum coating, cerium-phosphorus-aluminum coating, and titanium-aluminum coating.
Embodiment 3
[0022] Abrasive slurry with a concentration of 400g / L is coated with zirconium-aluminum inorganically. After the coating is completed, it is washed until the resistivity is ≥ 60Ω·m, and then re-pulped to a concentration of 200g / L, and 0.3wt% TMP is added. (mass fraction of titanium dioxide), and then ultrasonically dispersed for 60 minutes. After the ultrasonic dispersion is completed, dry and steam powder, the TMP added to the steam powder is 0.3wt% (mass fraction of titanium dioxide), and the gas-solid ratio is 3:1 (ratio to titanium dioxide).
[0023] The inorganic coating in Examples 1-3 can also be cerium phosphorous aluminum coating or titanium aluminum coating.
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