CN103819943B - Produce the method for the anti-yellowing property general titanium dioxide of anatase titanium dioxide - Google Patents
Produce the method for the anti-yellowing property general titanium dioxide of anatase titanium dioxide Download PDFInfo
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Abstract
The present invention discloses a kind of method producing the general titanium dioxide of anatase titanium dioxide, and the method comprises the steps: a, the anatase thpe white powder de-salted water making beating after calcining is made slurry, adds wetting agent water glass, then regulates pH to 9��11 of slip; B, sand milling obtain the sharp titanium first product slurry that 325 order screeningss are less than 0.01%; C, it is diluted to de-salted water and counts 280��340g/L with titanium dioxide, regulate pH to 9��11; D, it is warming up to 40��90 DEG C, in 10��60min, then adds silicon salt, slaking 60��120min; Add aluminium salt, slaking 15��60min; Add aluminium salt again, slaking 60��120min; E, filtration, washing, drying, add the laggard promoting the circulation of qi powder of organic surface treatment, obtain general titanium dioxide. The present invention produces the titanium dioxide obtained and has the features such as lattice stability is good, dispersion stability is strong, particularly has the feature of heat-resisting yellowing resistance.
Description
Technical field
The invention belongs to field of titanium dioxide production, it is specifically related to a kind of produce high durable, particularly there is the method for the general anatase thpe white powder of better yellowing resistance.
Background technology
Titanium dioxide take crystalline titania as main component, there is the characteristic far above other inorganics specific refractory poweres, this makes titanium dioxide have the strongest opacifying power and become current best white pigment, and is widely used in the numerous areas such as coating, plastics, papermaking, ink and pottery as a kind of important industrial chemicals. As white pigment up-and-coming youngster's titanium white advantage clearly, instead of traditional white pigment, become the leading product of pigment market. Its good pigment performance, allows the white pigment kind of the numerous areas first-selections such as titanium white becomes industrial, civilian, building.
In current anatase thpe white powder except catalysis titanium white and the special titanium white of chemical fibre, also do not find universal sharp titanium titanium dioxide is carried out organic and inorganic coating process to improve the technology of titanium white quality, the anatase thpe white powder used on the market now is mostly common universal titanium dioxide, there is a series of problems such as universal anatase thpe white powder product dispersion property instability, poor heat resistance, easily flavescence, easily efflorescence. Even if some all do not show good yellowing resistance in disclosed Rutile type Titanium Dioxide patent. As:
The Chinese invention patent being 200610043664.1 in the patent No. discloses " complete processing of white titanium pigment with high application performance ", and the product of this Disclosure is also universal product, embodies dispersion, does not relate to this technology of yellowing resistance yet; Application number be 200610020847.1 Chinese invention patent disclose " production method of high weathering resistance titanium dioxide pigment ", the method discloses the mode of production of a kind of high-weatherability product, and product does not relate to the yellowing resistance improving product yet.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method of general titanium dioxide of anatase titanium dioxide producing high durable, and it is good that the general titanium dioxide that the method production obtains has lattice stability, and dispersion stability is strong, particularly has the feature of heat-resisting yellowing resistance.
The technical solution adopted for the present invention to solve the technical problems is: the method producing the anti-yellowing property general titanium dioxide of anatase titanium dioxide, comprises the steps:
A, the anatase thpe white powder de-salted water making beating after calcining being made slurry, add wetting agent water glass, the add-on of water glass is: quality=0.15��0.35% of titanium dioxide in the quality slurry of silicon-dioxide in water glass; Then pH value to 9��11 of slip are regulated with sodium hydroxide solution;
B, the slip obtained by step a deliver to sand mill sand milling, and sand milling obtains the sharp titanium first product slurry that 325 order screeningss are less than 0.01%;
C, the sharp titanium first product slurry de-salted water obtained by step b are diluted to concentration and count 280��340g/L with titanium dioxide, then regulate pH to 9��11;
D, the slip obtained by step c are warming up to 40��90 DEG C, then add silicon salt in 10��60min, and the add-on of silicon salt is: quality=0.6��1.0% of titanium dioxide in the quality slurry of silicon-dioxide in silicon salt; Add silicon salt post curing 60��120min;
Adding aluminium salt in 30��60min after adding silicon salt slaking, the add-on of aluminium salt is: quality=0.55��1.2% of titanium dioxide in the quality slurry of aluminium sesquioxide in aluminium salt; Add aluminium salt post curing 15��60min;
Upper step adds aluminium salt in 35��75min after adding aluminium salt slaking again, and the add-on of aluminium salt is: quality=0.65��1.35% of titanium dioxide in the quality slurry of aluminium sesquioxide in aluminium salt; Then pH to 7��9, slaking 60��120min is regulated;
E, steps d is processed after slurry filtration, then wash, dry, add the laggard promoting the circulation of qi powder of organic surface treatment, obtain the anti-yellowing property general titanium dioxide of anatase titanium dioxide; The add-on of organic surface treatment is: quality=0.1��0.4% of the quality titanium dioxide of carbon in organic surface treatment.
Wherein, the organic surface treatment described in aforesaid method is silane coupling agent. Namely described gas powder is comminution by gas stream post, is adopt superheated vapour that titanium dioxide is carried out comminution by gas stream grinding, and carries out the measure of organic coated process simultaneously.
Wherein, in aforesaid method step a, making beating finish mix slurry concentration counts 700��1000g/L with titanium dioxide.
Wherein, in aforesaid method step c, what adjustment pH adopted is sodium hydroxide and/or sodium carbonate.
Wherein, in aforesaid method steps d, described silicon salt is water glass.
Wherein, in aforesaid method steps d, described aluminium salt is Tai-Ace S 150 or sodium metaaluminate. Preferred, the aluminium salt first added is Tai-Ace S 150, after the aluminium salt that adds be sodium metaaluminate.
Wherein, in aforesaid method steps d, what regulate that pH adopts is at least one in sulfuric acid, hydrochloric acid, sodium hydroxide or sodium carbonate, or Tai-Ace S 150 or sodium metaaluminate.
Wherein, in aforesaid method step a, wetting agent is replaced as Sodium hexametaphosphate 99, and the add-on of Sodium hexametaphosphate 99 is: quality=0.15��0.35% of titanium dioxide in the quality slurry of Vanadium Pentoxide in FLAKES in Sodium hexametaphosphate 99.
Wherein, in aforesaid method step a, wetting agent is replaced as ��-amino isopropyl alcohol, and the add-on of ��-amino isopropyl alcohol is: quality=0.15��0.35% of titanium dioxide in the quality slurry of ��-amino isopropyl alcohol.
Wherein, in aforesaid method step a, wetting agent is replaced as trisodium phosphate, and the add-on of trisodium phosphate is: quality=0.15��0.35% of titanium dioxide in the quality slurry of Vanadium Pentoxide in FLAKES in trisodium phosphate.
Wherein, in aforesaid method step a, wetting agent is replaced as monoethanolamine, and the add-on of monoethanolamine is: quality=0.15��0.35% of titanium dioxide in the quality slurry of monoethanolamine.
The invention has the beneficial effects as follows: the present invention by making beating, add wetting agent, regulate pH, grinding, dilution and adjust pH(step a to c again) measure make crude product pigment particles have better dispersion stabilization, for follow-up inorganic coating process provides the most favourable condition, it is achieved coated uniformly; The present invention is the measure such as (d of step) strict temperature control, each operation steps time, add-on in inorganic coating process, ensure the dispersion of product, weathering resistance, whiteness and glossiness, and then carry out that organic coated (step e) improves dispersion and the weathering resistance of product further; Above-mentioned aggregate measures can make the present invention produce the titanium dioxide obtained to have the features such as lattice stability is good, dispersion stability is strong, particularly have the feature of heat-resisting yellowing resistance. The present invention is that high-weatherability, the particularly production of the general titanium dioxide of the anatase titanium dioxide of heat-resisting yellowing resistance provide a kind of rigorous new method.
Embodiment
The present invention produces the method for the anti-yellowing property general titanium dioxide of anatase titanium dioxide, comprises the steps:
A, the anatase thpe white powder de-salted water making beating after calcining being made slurry, add wetting agent water glass, the add-on of water glass is: quality=0.15��0.35% of titanium dioxide in the quality slurry of silicon-dioxide in water glass; Then pH value to 9��11 of slip are regulated with sodium hydroxide solution;
B, the slip obtained by step a deliver to sand mill sand milling, and sand milling obtains the sharp titanium first product slurry that 325 order screeningss are less than 0.01%;
C, the sharp titanium first product slurry de-salted water obtained by step b are diluted to concentration and count 280��340g/L with titanium dioxide, then regulate pH to 9��11;
D, the slip obtained by step c are warming up to 40��90 DEG C, then add silicon salt in 10��60min, and the add-on of silicon salt is: quality=0.6��1.0% of titanium dioxide in the quality slurry of silicon-dioxide in silicon salt; Add silicon salt post curing 60��120min;
Adding aluminium salt in 30��60min after adding silicon salt slaking, the add-on of aluminium salt is: quality=0.55��1.2% of titanium dioxide in the quality slurry of aluminium sesquioxide in aluminium salt; Add aluminium salt post curing 15��60min;
Upper step adds aluminium salt in 35��75min after adding aluminium salt slaking again, and the add-on of aluminium salt is: quality=0.65��1.35% of titanium dioxide in the quality slurry of aluminium sesquioxide in aluminium salt; Then pH to 7��9, slaking 60��120min is regulated;
E, steps d is processed after slurry filtration, then wash, dry, add the laggard promoting the circulation of qi powder of organic surface treatment, obtain the anti-yellowing property general titanium dioxide of anatase titanium dioxide; The add-on of organic surface treatment is: quality=0.1��0.4% of the quality titanium dioxide of carbon in organic surface treatment.
Technique scheme of the present invention is an overall measure, in order to fully realize effect of the present invention, particularly for yellowing resistance, it is proposed that should operate in strict accordance with aforesaid method, and can not arbitrarily change parameter, such as pH value etc.
Preferably, the organic surface treatment described in aforesaid method is silane coupling agent. Namely described gas powder is comminution by gas stream post, is adopt superheated vapour that titanium dioxide is carried out comminution by gas stream grinding, and carries out the measure of organic coated process simultaneously.
Preferably, in order to more be conducive to follow-up making beating grinding operation, in aforesaid method step a, making beating finish mix slurry concentration counts 700��1000g/L with titanium dioxide.
Preferably, in aforesaid method step c, what adjustment pH adopted is sodium hydroxide and/or sodium carbonate.
Preferably, in aforesaid method steps d, described silicon salt is water glass.
Preferably, in aforesaid method steps d, described aluminium salt is Tai-Ace S 150 or sodium metaaluminate. Preferred, the aluminium salt first added is Tai-Ace S 150, after the aluminium salt that adds be sodium metaaluminate.
Preferably, in aforesaid method steps d, what regulate that pH adopts is at least one in sulfuric acid, hydrochloric acid, sodium hydroxide or sodium carbonate, or Tai-Ace S 150 or sodium metaaluminate.
Wherein, in aforesaid method step a, wetting agent can be replaced as Sodium hexametaphosphate 99, and the add-on of Sodium hexametaphosphate 99 is: quality=0.15��0.35% of titanium dioxide in the quality slurry of Vanadium Pentoxide in FLAKES in Sodium hexametaphosphate 99.
Wherein, in aforesaid method step a, wetting agent can be replaced as ��-amino isopropyl alcohol, and the add-on of ��-amino isopropyl alcohol is: quality=0.15��0.35% of titanium dioxide in the quality slurry of ��-amino isopropyl alcohol.
Wherein, in aforesaid method step a, wetting agent can be replaced as trisodium phosphate, and the add-on of trisodium phosphate is: quality=0.15��0.35% of titanium dioxide in the quality slurry of Vanadium Pentoxide in FLAKES in trisodium phosphate.
Wherein, in aforesaid method step a, wetting agent can be replaced as monoethanolamine, and the add-on of monoethanolamine is: quality=0.15��0.35% of titanium dioxide in the quality slurry of monoethanolamine.
Below by embodiment, the present invention is described further, but therefore protection scope of the present invention is not limited in one embodiment.
Embodiment one adopts the inventive method to prepare
Rotary kiln gained first product de-salted water is made the slurry of 850g/l, using water glass as wetting agent, water glass add-on counts titanium dioxide quality 0.2% in titania slurry with SiO2, be 10.00 with the NaOH adjust pH of 200g/l, carry out disperseing, sand milling (325 orders sieve screeningss are less than 0.01%); Gained titania slurry after sand milling is diluted to concentration is 310g/l, is 10.00 with the NaOH adjust pH of 200g/l, is warming up to 60 DEG C, and the sodium silicate solution adding titanium dioxide quality 0.6% when 10min is (with SiO2Meter), terminate post curing 60min; Tai-Ace S 150 0.7%(is added with Al when 30min2O3Meter), terminate post curing 25min; Sodium metaaluminate 0.85%(Al is added when 50min203Meter), terminate post curing 45min, slaking adds Tai-Ace S 150 and slurry pH is adjusted to 8.0, slaking 1h after terminating.
Being filtered by gained titania slurry, washing 2h, makes titanium dioxide moisture be less than 0.1% through expansion drying, adds silane coupling agent at gas powder machine inlet capable, and add-on counts 0.3% with C content, namely obtains product after gas powder.
Table 1 embodiment one product and PTA-120 performance comparison table
Note: 1, with PTA-120 standard specimen as a comparison. PTA-120 titanium dioxide climbs the tailored version expensive goods that steel Group Titanium industry company produces, and has that whiteness is good, reducing power height, water regain are low, a feature such as even particle size distribution, water-dispersion are excellent; It is mainly used in the industries such as water-borne coatings, papermaking, emulsion paint, for the high-end product of domestic anatase thpe white powder product represent.
2, before treatment fall kiln product do not do corresponding follow-up index evaluation.
Correlation detection situation illustrates (other embodiments are identical):
1, the detection method of color and reducing power carries out according to GB GB/T1706-2006.
2, the detection of particle diameter is with the Malvern laser particle analyzer MS-2000 of company.
3, opacifying power is dispersed in 4g standard white slurry with 0.2g titanium dioxide; After condition same with standard specimen is disperseed, the visual opacifying power situation of scraper plate.
4, the detection of anti-yellowing property is: gets the treated titanium dioxide sample completed in right amount and, on watch-glass, puts into 250 DEG C of baking ovens and toast 1h, observe its appearance color changing conditions.
5, in water, suspension stability leaves standstill 5h after mixing according to the titanium dioxide concentration of 5%, and visual method observes the layering situation of slurry. The mensuration of water dispersible:
1. weigh:
Take titanium dioxide 15g, put into the 500ml beaker that 285ml deionized water is housed in advance.
2. disperse:
Beaker is placed on magnetic stirring apparatus and stirs 30min.
3. centrotheca measures:
4. get vibration slurry 10ml and put into the weighing bottle of constant weight, take slurry weight W1, then in 140 DEG C dry more than 4 hours to constant weight, cool after take lingering section weight meter W2.
5. quiescent settling:
Residue dispersed paste loaded in 250ml graduated cylinder, make liquid level keep 200ml, be placed on smooth service platform quiescent settling 5 hours.
6. dispersion liquid sampling:
With suction pipe draw dispersion liquid in 250ml beaker, imbibition from liquid level to apart from 30ml part at the bottom of liquid.
7. dispersion liquid is dried and is weighed:
Put into the weighing bottle of constant weight with pipette, extract 10ml, claim its weight to be W3, after dispersion liquid is dried more than 4 hours to constant weight, cooling in 140 DEG C, weigh residual part weight meter W4��
8. calculate:
Water dispersibleIn formula: W1Sample slip weight (g) taken; W3Dispersion liquid sample weight (g);
W2Solid formation weight (g) of sample slip; W4Solid formation weight (g) of dispersion liquid sample.
Embodiment two adopts the inventive method to prepare
Rotary kiln gained first product de-salted water is made the slurry of 850g/l, using ��-amino isopropyl alcohol as wetting agent, is 10.00 with the NaOH adjust pH of 200g/l, carry out disperseing, sand milling (325 orders sieve screeningss are less than 0.01%); Gained titania slurry after sand milling is diluted to concentration is 310g/l, is 10.00 with the NaOH adjust pH of 200g/l, is warming up to 60 DEG C, and the sodium silicate solution adding titanium dioxide quality 0.8% when 10min is (with SiO2Meter), terminate post curing 60min; Tai-Ace S 150 0.7%(is added with Al when 30min2O3Meter), terminate post curing 25min; Sodium metaaluminate 0.85%(Al is added when 50min203Meter), terminate post curing 45min, slaking adds Tai-Ace S 150 and slurry pH is adjusted to 8.0, slaking 1h after terminating.
Being filtered by gained titania slurry, washing 2h, makes titanium dioxide moisture be less than 0.1% through expansion drying, adds silane coupling agent at gas powder machine inlet capable, and add-on counts 0.3% with C content, namely obtains product after gas powder.
Table 2 embodiment two product and PTA-120 performance comparison table
Note: 1, with PTA-120 standard specimen as a comparison.
2, before treatment fall kiln product do not do corresponding follow-up index evaluation.
Embodiment three adopts the inventive method to prepare
Rotary kiln gained first product de-salted water is made the slurry of 850g/l, and using Sodium hexametaphosphate 99 as wetting agent, Sodium hexametaphosphate 99 add-on is with P2O5Count titanium dioxide quality 0.2% in titania slurry, be 10.00 with the NaOH adjust pH of 200g/l, carry out disperseing, sand milling (325 orders sieve screeningss are less than 0.01%); Gained titania slurry after sand milling is diluted to concentration is 310g/l, is 10.00 with the NaOH adjust pH of 200g/l, is warming up to 60 DEG C, and the sodium silicate solution adding titanium dioxide quality 0.8% in 10min is (with SiO2Meter), terminate post curing 60min; Tai-Ace S 150 0.85%(is added with Al in 30min2O3Meter), terminate post curing 25min; In 50min, add sodium metaaluminate 1.15%(Al203 count), terminate post curing 45min, slaking adds dilute sulphuric acid and slurry pH is adjusted to 8.0, slaking 1h after terminating.
Being filtered by gained titania slurry, washing 2h, makes titanium dioxide moisture be less than 0.1% through expansion drying, adds silane coupling agent at gas powder machine inlet capable, and add-on counts 0.3% with C content, namely obtains product after gas powder.
Table 3 embodiment three products and PTA-120 performance comparison table
Note: 1, with PTA-120 standard specimen as a comparison.
2, before treatment fall kiln product do not do corresponding follow-up index evaluation.
Embodiment four adopts the inventive method to prepare
Rotary kiln gained first product de-salted water is made the slurry of 850g/l, and using water glass as wetting agent, water glass add-on is with SiO2Count titanium dioxide quality 0.2% in titania slurry, be 10.00 with the NaOH adjust pH of 200g/l, carry out disperseing, sand milling (325 orders sieve screeningss are less than 0.01%); Gained titania slurry after sand milling is diluted to concentration is 310g/l, is 10.00 with the NaOH adjust pH of 200g/l, is warming up to 60 DEG C, adds 0.6% sodium silicate solution (with SiO in 10min2Meter), terminate post curing 60min; Tai-Ace S 150 0.85%(is added with Al in 30min2O3Meter), terminate post curing 25min; Sodium metaaluminate 1.15%(Al is added in 50min203Meter), terminate post curing 45min, slaking adds Tai-Ace S 150 and slurry pH is adjusted to 8.0, slaking 80min after terminating.
Being filtered by gained titania slurry, washing 2h, makes titanium dioxide moisture be less than 0.1% through expansion drying, adds silane coupling agent at gas powder machine discharge port, and add-on counts 0.3% with C content, namely obtains product after gas powder.
Table 4 embodiment four-product and PTA-120 performance comparison table
Note: 1, with PTA-120 standard specimen as a comparison.
2, before treatment fall kiln product do not do corresponding follow-up index evaluation.
Comparative example one (adopting the method that the patent No. is the patent disclosure of 200610043664.1)
Choose the patent No.: method disclosed in 200610043664.1, carry out compareing the behavior pattern implementing checking product of the present invention. This patent is Rutile type Titanium Dioxide coated product technology, and present techniques is anatase titanium dioxide coated product, due to rutile-type and anatase thpe white powder owing to crystalline structure difference causes pigment performance also to there is difference; So comparison proof test is considered with this report patent film-coating technique, anatase thpe white powder is carried out coating process; I.e. same obtained anatase titanium dioxide coated product reference product performance again.
Specific implementation process:
1, experiment is implemented
Anatase titanium dioxide first product 500g deionized water is mixed with slurry, adds sodium hydroxide solution and make slurry pH value be 10.05, add sodium hexametaphosphate solution, by slurry sand milling in sand mill, consider with sieve and sand grains and coarse particles. Slurry is joined in coating tank, it is warming up to 76 DEG C, start to wrap fine and close silicon. First add titanium dioxide first product add-on 0.5% sodium silicate solution (with SiO2Meter), then and stream add titanium dioxide first product add-on 0.5% sodium silicate solution (with SiO2Meter) and weight percent concentration be the sulphuric acid soln of 20%, to keep, slurry pH value maintains between 10.0��11.0 the speed added. Reinforced terminate after, being at the uniform velocity acidified to slurry pH value with sulphuric acid soln is 7.5, then stirs slaking, and temperature is down to 70 DEG C by 76 DEG C, and stream add titanium dioxide first product add-on 0.5% sodium aluminate solution (with Al2O3Meter) and weight percent concentration be the sulphuric acid soln of 30%, add speed to maintain slurry pH value as 8.3 �� 0.2, stir slaking again, adjust slurry pH value to be 7.5 with sulfuric acid, stir slaking, filter, washing, drying, then comminution by gas stream, add TriMethylolPropane(TMP) (TMP) and carry out organic process when comminution by gas stream.
2, sample contrast
From the anatase titanium dioxide coating sample obtained according to this report patented technology, sample difference prepared by outward appearance whiteness and color and present techniques is little, most significant difference is: the sample that 1, prepared by document patented method, the suspension stability under water-based system 5% concentration does not have the sample dispersion of this technology good. 2, from the sample appearance color after high bake, it is also much obvious than sample variation prepared by this technology that the look of sample prepared by document patented method becomes situation. General quality contrast situation is as shown in table 5 below:
This technical products of table 5 and document patent working sample contrast table
Note: using the obtained sample of document patented method as standard specimen.
Comparative example two (adopting the method that the patent No. is the patent disclosure of 200610020847.1)
Choose the patent No.: method disclosed in 200610020847.1, carry out compareing the behavior pattern implementing checking product of the present invention. This patent is Rutile type Titanium Dioxide coated product technology, and present techniques is anatase titanium dioxide coated product, due to rutile-type and anatase thpe white powder owing to crystalline structure difference causes pigment performance also to there is difference; So comparison proof test is considered with this report patent film-coating technique, anatase thpe white powder is carried out coating process; I.e. same obtained anatase titanium dioxide coated product reference product performance again
Specific implementation process:
1, experiment is implemented
Get anatase titanium dioxide powder body, under whipped state, add the deionized water being warmed up to 80-100 DEG C wherein, be mixed with the slurry of 400g/l. Make the pH value of slurry remain on 10, regulate PH with dilute sulphuric acid. Add silicon-dioxide 2%(earth silicon/titanic oxide), need slowly to add, whole process completes at 30-60min, then slaking 30-50min, then regulates pH 6.5, add aluminum oxide 2%(aluminum oxide/titanium dioxide), needing slowly to add, whole process completes at 30-60min, then slaking 30-50min, regulate pH 5, slaking 60-80min. Slurry is poured in B��chner funnel, by temperature till the deionized water of 60-80 DEG C is washed till sulfate radical-free. Then prevent from material drying in baking oven, oven dry material is pulverized at small-sized crusher, obtains diameter of particle at 5-20 ��m.
2, sample contrast
From the anatase titanium dioxide coating sample obtained according to this report patented technology, sample difference prepared by outward appearance whiteness and color and present techniques is little, most significant difference is: the sample that 1, prepared by document patented method, the suspension stability under water-based system 5% concentration does not have the sample dispersion of this technology good. 2, from the sample appearance color after high bake, it is also much obvious than sample variation prepared by this technology that the look of sample prepared by document patented method becomes situation. General quality contrast situation is as shown in table 6 below:
This technical products of table 6 and document patent working sample contrast table
Note: 1, using the obtained sample of document patented method as standard specimen.
Claims (8)
1. produce the method for the anti-yellowing property general titanium dioxide of anatase titanium dioxide, it is characterised in that comprise the steps:
A, the anatase thpe white powder de-salted water making beating after calcining being made slurry, add wetting agent water glass, the add-on of water glass is: quality=0.15��0.35% of titanium dioxide in the quality slurry of silicon-dioxide in water glass; Then pH value to 9��11 of slip are regulated with sodium hydroxide solution;
B, the slip obtained by step a deliver to sand mill sand milling, and sand milling obtains the sharp titanium first product slurry that 325 order screeningss are less than 0.01%;
C, the sharp titanium first product slurry de-salted water obtained by step b are diluted to concentration and count 280��340g/L with titanium dioxide, then regulate pH to 9��11;
D, the slip obtained by step c are warming up to 40��90 DEG C, then add water glass in 10��60min, and the add-on of water glass is: quality=0.6��1.0% of titanium dioxide in the quality slurry of silicon-dioxide in water glass; Add water glass post curing 60��120min;
Adding Tai-Ace S 150 in 30��60min after adding water glass slaking, the add-on of Tai-Ace S 150 is: quality=0.55��1.2% of titanium dioxide in the quality slurry of aluminium sesquioxide in Tai-Ace S 150; Add Tai-Ace S 150 post curing 15��60min;
Upper step adds sodium metaaluminate in 35��75min after adding Tai-Ace S 150 slaking again, and the add-on of sodium metaaluminate is: quality=0.65��1.35% of titanium dioxide in the quality slurry of aluminium sesquioxide in sodium metaaluminate; Then pH to 7��9, slaking 60��120min is regulated;
E, steps d is processed after slurry filtration, then wash, dry, add the laggard promoting the circulation of qi powder of organic surface treatment, obtain the anti-yellowing property general titanium dioxide of anatase titanium dioxide; The add-on of organic surface treatment is: quality=0.1��0.4% of the quality titanium dioxide of carbon in organic surface treatment.
2. the method for the general titanium dioxide of production according to claim 1 anti-yellowing property anatase titanium dioxide, it is characterised in that: in step a, the slurry concentration that making beating is made counts 700��1000g/L with titanium dioxide.
3. the method for the general titanium dioxide of production according to claim 1 anti-yellowing property anatase titanium dioxide, it is characterised in that: in step c, what adjustment pH adopted is sodium hydroxide and/or sodium carbonate.
4. the method for the general titanium dioxide of production according to claim 1 anti-yellowing property anatase titanium dioxide, it is characterised in that: in steps d, what regulate that pH adopts is at least one in sulfuric acid, hydrochloric acid, sodium hydroxide or sodium carbonate, or Tai-Ace S 150 or sodium metaaluminate.
5. the method for the general titanium dioxide of production according to any one of claim 1 to 4 anti-yellowing property anatase titanium dioxide, it is characterized in that: in step a, wetting agent is replaced as Sodium hexametaphosphate 99, and the add-on of Sodium hexametaphosphate 99 is: quality=0.15��0.35% of titanium dioxide in the quality slurry of Vanadium Pentoxide in FLAKES in Sodium hexametaphosphate 99.
6. the method for the general titanium dioxide of production according to any one of claim 1 to 4 anti-yellowing property anatase titanium dioxide, it is characterized in that: in step a, wetting agent is replaced as ��-amino isopropyl alcohol, and the add-on of ��-amino isopropyl alcohol is: quality=0.15��0.35% of titanium dioxide in the quality slurry of ��-amino isopropyl alcohol.
7. the method for the general titanium dioxide of production according to any one of claim 1 to 4 anti-yellowing property anatase titanium dioxide, it is characterized in that: in step a, wetting agent is replaced as trisodium phosphate, and the add-on of trisodium phosphate is: quality=0.15��0.35% of titanium dioxide in the quality slurry of Vanadium Pentoxide in FLAKES in trisodium phosphate.
8. the method for the general titanium dioxide of production according to any one of claim 1 to 4 anti-yellowing property anatase titanium dioxide, it is characterized in that: in step a, wetting agent is replaced as monoethanolamine, and the add-on of monoethanolamine is: quality=0.15��0.35% of titanium dioxide in the quality slurry of monoethanolamine.
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| CN104107764A (en) * | 2014-07-22 | 2014-10-22 | 四川龙蟒钛业股份有限公司 | Method for improving flatness and glossiness of titanium dioxide film |
| CN105062150B (en) * | 2015-08-11 | 2017-12-15 | 攀钢集团攀枝花钢铁研究院有限公司 | Improve the processing method of titanium dioxide weatherability |
| CN105885532A (en) * | 2016-05-30 | 2016-08-24 | 蚌埠市维光塑胶制品有限公司 | High-performance printing ink |
| CN105885531A (en) * | 2016-05-30 | 2016-08-24 | 蚌埠市维光塑胶制品有限公司 | Heat-resisting fast-drying printing ink |
| CN107057407A (en) * | 2016-12-23 | 2017-08-18 | 宁波新福钛白粉有限公司 | A kind of preparation method of water paint TiO 2 pigment |
| CN107955414A (en) * | 2017-12-01 | 2018-04-24 | 江苏镇钛化工有限公司 | The preparation method of water-based Diamond Search ink special titanium pigment |
| CN108329720A (en) * | 2018-04-25 | 2018-07-27 | 四川龙蟒钛业股份有限公司 | A method of effectively improving general titanium dioxide covering power |
| CN108677520A (en) * | 2018-07-04 | 2018-10-19 | 河北惠尔信新材料有限公司 | A kind of polyamide fibre chemical fibre titanium oxide inorganic coating treatment process |
| CN109096794A (en) * | 2018-10-09 | 2018-12-28 | 龙蟒佰利联集团股份有限公司 | A kind of preparation method of high durable titanium dioxide |
| CN109535775B (en) * | 2018-12-24 | 2020-11-24 | 攀钢集团重庆钛业有限公司 | Preparation method of special titanium dioxide for ink |
| CN111097550A (en) * | 2019-12-23 | 2020-05-05 | 安徽迪诺环保新材料科技有限公司 | Low-tungsten high-temperature denitration catalyst, carrier and preparation method |
| CN111234567B (en) * | 2020-03-18 | 2021-11-05 | 中南大学 | Inorganic coating process for preparing high-weather-resistance titanium dioxide |
| CN112194912B (en) * | 2020-09-27 | 2021-12-10 | 攀枝花大互通钛业有限公司 | Preparation method of high-dispersion, high-brightness, high-coverage and high-weather-resistance water-based titanium white |
| CN113789067A (en) * | 2021-10-22 | 2021-12-14 | 攀钢集团重庆钒钛科技有限公司 | Preparation method of high-water-dispersibility titanium dioxide slurry |
| CN114106589A (en) * | 2021-11-29 | 2022-03-01 | 攀钢集团重庆钒钛科技有限公司 | Method for coating compact aluminum oxide film on titanium dioxide particle surface |
| CN115772337A (en) * | 2022-11-30 | 2023-03-10 | 攀钢集团研究院有限公司 | Special high-weather-resistance titanium dioxide enveloping method for wind power blade coating |
| CN116285425B (en) * | 2022-12-15 | 2024-05-31 | 宜宾天原海丰和泰有限公司 | Titanium dioxide silicon-aluminum coating method |
| CN116515323B (en) * | 2023-04-27 | 2025-05-06 | 上海颜钛实业有限公司 | A high performance titanium dioxide pigment and preparation method thereof |
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| US4125412A (en) * | 1976-09-09 | 1978-11-14 | E. I. Du Pont De Nemours And Company | Process for the production of durable titanium dioxide pigment |
| CA1304995C (en) * | 1988-04-15 | 1992-07-14 | John R. Brand | Process for producing durable titanium dioxide pigments |
| JPH07113053A (en) * | 1993-10-18 | 1995-05-02 | Sakai Chem Ind Co Ltd | Titanium dioxide for inorganic coating and production thereof |
| CN1189178A (en) * | 1996-04-16 | 1998-07-29 | 科尔-麦克基化学公司 | Durable pigments for plastics |
| JP4668705B2 (en) * | 2005-07-04 | 2011-04-13 | 石原産業株式会社 | Method for producing titanium dioxide pigment |
| US7842131B2 (en) * | 2006-01-30 | 2010-11-30 | Kronos International Inc | High opacity TiO2 pigment and production method |
| CN100434485C (en) * | 2006-04-21 | 2008-11-19 | 江苏镇钛化工有限公司 | Process for preparing titanium dioxide with dispersion sensitive property and high weatherability |
| CN101235223B (en) * | 2008-03-05 | 2010-10-20 | 攀钢集团攀枝花钢铁研究院有限公司 | High water dispersity titanium dioxide and coating method thereof |
| CN102051073A (en) * | 2010-12-20 | 2011-05-11 | 昆明理工大学 | Surface-modified titanium white powder and preparation method thereof |
| CN102079885B (en) * | 2010-12-25 | 2014-04-16 | 锦州钛业有限公司 | Method for preparing multifunctional titanium dioxide pigment with chlorination method |
| CN102199367B (en) * | 2011-03-30 | 2013-12-25 | 中国科学院宁波材料技术与工程研究所 | Method for preparing titanium dioxide pigment with high-temperature resistance |
| CN102876091A (en) * | 2012-10-11 | 2013-01-16 | 浙江瑞成珠光颜料有限公司 | Preparation method for anti-yellowing pearlescent pigment |
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