CN104479417A - Preparation method of rutile titanium dioxide inorganic coating film - Google Patents
Preparation method of rutile titanium dioxide inorganic coating film Download PDFInfo
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- CN104479417A CN104479417A CN201410807482.1A CN201410807482A CN104479417A CN 104479417 A CN104479417 A CN 104479417A CN 201410807482 A CN201410807482 A CN 201410807482A CN 104479417 A CN104479417 A CN 104479417A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention relates to the field of processes of inorganic coating films, in particular to a preparation method of a rutile titanium dioxide inorganic coating film. According to the preparation method, industrial raw materials comprise high-purity aluminum sulfate, sodium silicate, sulfuric acid, sodium hydroxide and rutile primary slurry; and instruments used in the preparation method comprise a vacuum reactor, an electrothermal constant-temperature dry box, a jet mill, a small high-speed pulverizer, a PH (potential of hydrogen) meter, an electronic scale and an electronic peristaltic pump. The method for rapid film coating with a downstream acid-free method has characteristics of high film coating speed, no need of sulfuric acid, energy saving, consumption reduction and the like, the problem that the inorganic film coating time for a rutile primary product is long is better solved, the film coating efficiency is improved, and the productivity of a rutile production line is improved.
Description
Technical field
The present invention relates to the technology field of inorganic coating, specifically a kind of preparation method of Rutile type Titanium Dioxide inorganic coating.
Background technology
Not surface treated Rutile type Titanium Dioxide is due to self lattice imperfection, there is many photoactivation points, in order to improve its application performance, need to carry out inorganic coating to its surface, with improve Rutile type Titanium Dioxide weathering resistance, resistance to deterioration, improve titanium dioxide particle dispersiveness in media as well.The technique of the current comparative maturity of Rutile type Titanium Dioxide inorganic coating mainly contains sial coating, zirconium aluminium coating and single aluminium coating.Tradition coating mode is consuming time longlyer (adds acidity (or alkalescence) coating agent at a certain temperature in slurry, add alkali (or acid) with certain speed again to neutralize, the joining day of alkali (or acid) is longer), there is considerable influence to the production cycle of Rutile type Titanium Dioxide.
Summary of the invention
In order to solve above-mentioned existing Rutile type Titanium Dioxide inorganic coating preparation method technology in not enough, the invention provides and a kind ofly adopt following current rutile crude product to be carried out to the preparation method of the Rutile type Titanium Dioxide inorganic coating of quickly coating without acid system (the part of sulfuric acid aluminum solutions replacement sulfuric acid with setting covering amount).
Technical scheme of the present invention is as follows: a kind of preparation method of Rutile type Titanium Dioxide inorganic coating, is characterized in that: in described preparation method, industrial raw material used comprises high-purity sulphuric acid aluminium, water glass, sulfuric acid, sodium hydroxide, rutile first product slurry; In described preparation method, instrument comprises vacuum reactor, Constant Temp. Oven, micronizer mill, miniature high-speed pulverizer, PH meter, electronic balance, electronic peristaltic pump;
The preparation method of described Rutile type Titanium Dioxide inorganic coating, comprises the following steps:
A. getting 5L titanium dioxide concentration is that vacuum reactor put into by the rutile first product slurry of about 300g/l, stirs 20 minutes; Measure the concentration of slurry with specific gravity flask, and slurry is warming up to 80 ~ 85 DEG C;
B. by setting covering amount, the sodium silicate solution of 50g/l is added in vacuum reactor by electronic peristaltic pump, stir 20 minutes; Add the high-purity sulphuric acid aluminum solutions of 80g/l and regulate the pH value of slurry to reach 6.5 ~ 8.0 simultaneously; Design temperature in above-mentioned A is kept to stir 20 minutes again;
C. allow slurry naturally cool to 60 ~ 65 DEG C, remaining alum liquor is added vacuum reactor and stirs 20 minutes;
D. add the sodium hydroxide solution of 100g/l until when slurry pH value reaches 6.5 ~ 8.0, stop adding, stir 20 minutes, then adjust pH value and be fixed between 6.5 ~ 8.0;
E. slaking blowing after 1 hour, obtains filter cake with after Büchner funnel suction filtration, and qualified to specific conductivity with deionized water wash filter cake;
F. filter cake being positioned over design temperature is continue oven dry 12 hours in the Constant Temp. Oven of 140 DEG C, and cooled block titanium dioxide miniature high-speed pulverizer is powder just, then uses micronizer mill fine powder, can obtain finished product.
During the pH value of described adjustment slurry, slowly add regulator solution, constantly stir slurry on one side, be within the scope of design temperature with the slurry in heating installation guarantee vacuum reactor simultaneously always.
Advantage of the present invention: the present invention adopts following current without the method for acid system quickly coating, have coating speed fast, without sulfuric acid, the feature such as energy-saving and cost-reducing, it preferably resolves the problem of rutile first product inorganic coating time length, improves coating efficiency, adds the production capacity of rutile production line.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with specific embodiment, the present invention is further elaborated.
A preparation method for Rutile type Titanium Dioxide inorganic coating, is characterized in that: in described preparation method, industrial raw material used comprises high-purity sulphuric acid aluminium, water glass, sulfuric acid, sodium hydroxide, rutile first product slurry; In described preparation method, instrument comprises vacuum reactor, Constant Temp. Oven, micronizer mill, miniature high-speed pulverizer, PH meter, electronic balance, electronic peristaltic pump;
The preparation method of described Rutile type Titanium Dioxide inorganic coating, comprises the following steps:
A. getting 5L titanium dioxide concentration is that vacuum reactor put into by the rutile first product slurry of about 300g/l, stirs 20 minutes; Measure the concentration of slurry with specific gravity flask, and slurry is warming up to 80 ~ 85 DEG C;
B. by setting covering amount, the sodium silicate solution of 50g/l is added in vacuum reactor by electronic peristaltic pump, stir 20 minutes; Add the high-purity sulphuric acid aluminum solutions of 80g/l and regulate the pH value of slurry to reach 6.5 ~ 8.0 simultaneously; Design temperature in above-mentioned A is kept to stir 20 minutes again;
C. allow slurry naturally cool to 60 ~ 65 DEG C, remaining alum liquor is added vacuum reactor and stirs 20 minutes;
D. add the sodium hydroxide solution of 100g/l until when slurry pH value reaches 6.5 ~ 8.0, stop adding, stir 20 minutes, then adjust pH value and be fixed between 6.5 ~ 8.0;
E. slaking blowing after 1 hour, obtains filter cake with after Büchner funnel suction filtration, and qualified to specific conductivity with deionized water wash filter cake;
F. filter cake being positioned over design temperature is continue oven dry 12 hours in the Constant Temp. Oven of 140 DEG C, and cooled block titanium dioxide miniature high-speed pulverizer is powder just, then uses micronizer mill fine powder, can obtain finished product.
During the pH value of described adjustment slurry, slowly add regulator solution, constantly stir slurry on one side, be within the scope of design temperature with the slurry in heating installation guarantee vacuum reactor simultaneously always.
Following current can reduce the production cycle of rutile first product coating without acid system quickly coating method; In addition, use this method not use sulfuric acid in the process of coating, have specific meaning to pollution that is energy-saving and cost-reducing, that reduce environment.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a preparation method for Rutile type Titanium Dioxide inorganic coating, is characterized in that: raw materials used in described preparation method is technical grade, comprises high-purity sulphuric acid aluminium, water glass, sulfuric acid, sodium hydroxide, rutile first product slurry; In described preparation method, instrument comprises vacuum reactor, Constant Temp. Oven, micronizer mill, miniature high-speed pulverizer, PH meter, electronic balance, electronic peristaltic pump; The preparation method of described Rutile type Titanium Dioxide inorganic coating, comprises the following steps: it is that vacuum reactor put into by the rutile first product slurry of 300g/l that A. gets 5L titanium dioxide concentration, stirs 20 minutes; Measure the concentration of slurry with specific gravity flask, and slurry is warming up to 80 ~ 85 DEG C; B. the sodium silicate solution of 50g/l is added in vacuum reactor by electronic peristaltic pump, stir 20 minutes; Add the high-purity sulphuric acid aluminum solutions of 80g/l and regulate the pH value of slurry to reach 6.5 ~ 8.0 simultaneously; Design temperature in above-mentioned A is kept to stir 20 minutes again; C. allow slurry naturally cool to 60 ~ 65 DEG C, remaining alum liquor is added vacuum reactor and stirs 20 minutes; D. add the sodium hydroxide solution of 100g/l until when slurry pH value reaches 6.5 ~ 8.0, stop adding, stir 20 minutes, then adjust pH value and be fixed between 6.5 ~ 8.0; E. slaking blowing after 1 hour, obtains filter cake with after Büchner funnel suction filtration, and qualified to specific conductivity with deionized water wash filter cake; F. filter cake being positioned over design temperature is continue oven dry 12 hours in the Constant Temp. Oven of 140 DEG C, and cooled block titanium dioxide miniature high-speed pulverizer is powder just, then uses micronizer mill fine powder, can obtain finished product.
2. the preparation method of Rutile type Titanium Dioxide inorganic coating according to claim 1, it is characterized in that: during the pH value of described adjustment slurry, want slowly to add regulator solution on one side, constantly stir slurry on one side, ensure that the slurry in vacuum reactor is within the scope of design temperature with heating installation simultaneously always.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410807482.1A CN104479417A (en) | 2014-12-23 | 2014-12-23 | Preparation method of rutile titanium dioxide inorganic coating film |
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| CN201410807482.1A CN104479417A (en) | 2014-12-23 | 2014-12-23 | Preparation method of rutile titanium dioxide inorganic coating film |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213659A (en) * | 1998-09-11 | 1999-04-14 | 清华大学 | Superfine titanium white surface cladding tech. and reactor thereof |
| CN102516824A (en) * | 2011-11-17 | 2012-06-27 | 江苏镇钛化工有限公司 | Preparation method of color master batch titanium dioxide |
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2014
- 2014-12-23 CN CN201410807482.1A patent/CN104479417A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213659A (en) * | 1998-09-11 | 1999-04-14 | 清华大学 | Superfine titanium white surface cladding tech. and reactor thereof |
| CN102516824A (en) * | 2011-11-17 | 2012-06-27 | 江苏镇钛化工有限公司 | Preparation method of color master batch titanium dioxide |
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Application publication date: 20150401 |