Preparation method of color master batch titanium dioxide
A technology of titanium dioxide and color masterbatch, applied in chemical instruments and methods, dyeing physical treatment, dyeing organic silicon compound treatment, etc., to achieve high application performance and good covering effect
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[0015] Example 1
[0016] Use sulfuric acid rutile titanium dioxide without surface treatment, add deionized water to make a slurry with a concentration of about 700g / l, add 0.2-0.3% sodium silicate, and sand and disperse by 2000rpm sand mill for 60 minutes. Add a certain amount of deionized water to dilute the dispersed slurry to 300g / l, and the slurry passes through a 300-mesh screen. The slurry was heated to 65°C, and the sodium metaaluminate solution and the sulfuric acid solution were simultaneously added at pH 8.5 for 60 minutes, and the addition amount of the sodium metaaluminate solution was 2% based on Al2O3 (calculated based on the mass of TiO2). The slurry was aged at pH 8.5 for 60 minutes at a temperature of 65°C, and the inorganic-coated hydrated alumina membrane was further aged. After the aging, sulfuric acid solution was added to adjust the end point pH to 7.0. Finally, the inorganic treated slurry is washed with water and dried. In the steam pulverization s...
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[0017] Example 2
[0018] Use sulfuric acid rutile titanium dioxide without surface treatment, add deionized water to make a slurry with a concentration of about 700g / l, add 0.2-0.3% sodium silicate, and sand and disperse by 2000rpm sand mill for 60 minutes. Add a certain amount of deionized water to dilute the dispersed slurry to 300g / l, and the slurry passes through a 300-mesh screen. The slurry was heated to 65°C, and the pH of the slurry was adjusted to 5.5 with sulfuric acid solution. At this pH, aluminum sulfate solution and sodium hydroxide solution were added simultaneously for 60 minutes. The amount of aluminum sulfate solution was 2% based on Al2O3. (calculated based on TiO2 mass). The slurry was aged at pH 5.5 for 60 minutes at a temperature of 65° C. to further age the inorganic-coated hydrated alumina membrane. After the aging, sodium hydroxide solution was added to adjust the endpoint pH to 7.5. Finally, the inorganic treated slurry is washed with water and dr...
Example Embodiment
[0019] Example 3
[0020] Use sulfuric acid rutile titanium dioxide without surface treatment, add deionized water to make a slurry with a concentration of about 700g / l, add 0.2-0.3% sodium silicate, and sand and disperse by 2000rpm sand mill for 60 minutes. Add a certain amount of deionized water to dilute the dispersed slurry to 300g / l, and the slurry passes through a 300-mesh screen. The slurry was heated to 65°C, and sodium metaaluminate solution and sulfuric acid solution were added simultaneously at pH 8.5 for 60 minutes, and the amount of sodium metaaluminate solution was 1% based on Al2O3 (calculated based on the mass of TiO2). The slurry was aged at pH 8.5 for 60 minutes at a temperature of 65°C, and the inorganic-coated hydrated alumina membrane was further aged. After the aging, sulfuric acid solution was added to adjust the end point pH to 7.0. Finally, the inorganic treated slurry is washed with water and dried. In the steam pulverization stage, the organic tre...
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