Production method of high-resistivity titanium dioxide
A technology with high resistivity and production method, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of chemical fiber industry that cannot be widely used, low resistivity of titanium dioxide, etc., and achieves a simple, feasible and feasible production method. Strong, cost-saving effect
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[0019] A preparation of titanium liquid
[0020] Titanium slag and titanium ore were reacted with sulfuric acid to obtain titanium solution, and the titanium solution was prepared with water to meet the hydrolysis requirements of concentrated titanium solution. The specific indicators of the concentrated titanium solution are shown in Table 1:
[0021] Table 1 Indicators of concentrated titanium solution
[0022]
[0023] Note: For the stability (ml / ml) in the table, the preceding "ml" represents the amount of distilled water, and the following "ml" represents 1ml of concentrated titanium solution.
[0024] Hydrolysis of B titanium solution
[0025] The hydrolysis process of the present invention is consistent with the conventional normal-pressure hydrolysis with external seed crystals, that is, after preheating the titanium solution → preparing the seed crystals → hydrolyzing, metatitanic acid can be obtained, and the particle size is D50 (D represents the diameter of the...
Embodiment 1
[0039] (1) The indicators of concentrated titanium solution are shown in Table 2;
[0040] Table 2 Indicators of concentrated titanium solution
[0041]
[0042] (2) The hydrolysis process is consistent with the existing external seed crystal hydrolysis at normal pressure, that is, the metatitanic acid can be obtained after preheating the titanium solution → preparing the seed crystal → hydrolyzing, and the particle size D50 is: 1.51 μm;
[0043] (3) Put the rinsed slurry into a salt treatment pot, add shallow desalted water to adjust the concentration of metatitanic acid slurry to 328g / l;
[0044] (4) After the slurry was stirred for 30 minutes, potassium hydroxide was added, and the addition of potassium hydroxide was 0.46wt% of the titanium dioxide content (based on the titanium dioxide content in metatitanic acid), stirred for 30min, and then added 0.28wt% of the titanium dioxide content phosphoric acid, stirred for 30min, and fed to the storage tank in front of the ki...
Embodiment 2
[0049] Except that the add-on of potassium hydroxide in step (4) is different from that in Example 1, other steps are all the same as in Example 1, and the add-on of potassium hydroxide in step (4) is 0.41wt% of titanium dioxide content; Gained product performance As shown in Table 4.
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