Preparation method of titanium dioxide for decorative paper
The invention provides a preparation method of titanium dioxide for decorative paper. The preparation method comprises the following steps: after mixing sodium hexametaphosphate and rutile titanium dioxide slurry, grinding to obtain mixed slurry; mixing the obtained mixed slurry with water-soluble c...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention provides a preparation method of titanium dioxide for decorative paper. The preparation method comprises the following steps: after mixing sodium hexametaphosphate and rutile titanium dioxide slurry, grinding to obtain mixed slurry; mixing the obtained mixed slurry with water-soluble cerium salt; adjusting the pH (Potential of Hydrogen) value; after obtaining alkaline slurry, carrying out first time of curing treatment; mixing a product obtained by the first time of curing treatment with a sodium hexametaphosphate solution; carrying out second time of curing treatment; mixing a product obtained by the second time of curing treatment with an aluminum-containing compound; adjusting the pH value to obtain mixed slurry with the pH value of 7 to 9 and carrying out third time of curing treatment; mixing a product obtained by the third time of curing treatment with the aluminum-containing compound and adjusting the pH value to obtain mixed slurry with the pH value of 5 to 7; carrying out fourth time of |
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