CN111040476A - Preparation method of zirconium-aluminum coated rutile titanium dioxide - Google Patents
Preparation method of zirconium-aluminum coated rutile titanium dioxide Download PDFInfo
- Publication number
- CN111040476A CN111040476A CN201911316679.4A CN201911316679A CN111040476A CN 111040476 A CN111040476 A CN 111040476A CN 201911316679 A CN201911316679 A CN 201911316679A CN 111040476 A CN111040476 A CN 111040476A
- Authority
- CN
- China
- Prior art keywords
- titanium dioxide
- dioxide slurry
- aluminum
- slurry
- zirconium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 347
- DNXNYEBMOSARMM-UHFFFAOYSA-N alumane;zirconium Chemical compound [AlH3].[Zr] DNXNYEBMOSARMM-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 139
- 239000002002 slurry Substances 0.000 claims abstract description 122
- 239000000047 product Substances 0.000 claims abstract description 40
- 239000012065 filter cake Substances 0.000 claims abstract description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 23
- 150000001875 compounds Chemical class 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000002270 dispersing agent Substances 0.000 claims abstract description 18
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 16
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 13
- 238000001035 drying Methods 0.000 claims abstract description 12
- 230000002378 acidificating effect Effects 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims abstract description 9
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical group O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 3
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 32
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 25
- 239000011734 sodium Substances 0.000 claims description 25
- 229910052708 sodium Inorganic materials 0.000 claims description 25
- ZXAUZSQITFJWPS-UHFFFAOYSA-J zirconium(4+);disulfate Chemical compound [Zr+4].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZXAUZSQITFJWPS-UHFFFAOYSA-J 0.000 claims description 19
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 15
- 229910052593 corundum Inorganic materials 0.000 claims description 15
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 15
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 14
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical group [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 14
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 229910052726 zirconium Inorganic materials 0.000 claims description 10
- 238000001238 wet grinding Methods 0.000 claims description 9
- 238000001354 calcination Methods 0.000 claims description 8
- 238000007865 diluting Methods 0.000 claims description 8
- 238000000265 homogenisation Methods 0.000 claims description 7
- 239000003513 alkali Substances 0.000 claims description 5
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 2
- WPUINVXKIPAAHK-UHFFFAOYSA-N aluminum;potassium;oxygen(2-) Chemical compound [O-2].[O-2].[Al+3].[K+] WPUINVXKIPAAHK-UHFFFAOYSA-N 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- CMOAHYOGLLEOGO-UHFFFAOYSA-N oxozirconium;dihydrochloride Chemical compound Cl.Cl.[Zr]=O CMOAHYOGLLEOGO-UHFFFAOYSA-N 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 40
- -1 aluminum salt compounds Chemical class 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 238000001704 evaporation Methods 0.000 abstract description 2
- 230000008020 evaporation Effects 0.000 abstract description 2
- 239000012467 final product Substances 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- 238000005406 washing Methods 0.000 abstract description 2
- 239000011247 coating layer Substances 0.000 abstract 1
- 150000003755 zirconium compounds Chemical class 0.000 abstract 1
- 235000010215 titanium dioxide Nutrition 0.000 description 110
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 66
- 238000000576 coating method Methods 0.000 description 28
- 239000011248 coating agent Substances 0.000 description 24
- 239000000243 solution Substances 0.000 description 23
- 238000010902 jet-milling Methods 0.000 description 12
- 239000013078 crystal Substances 0.000 description 9
- 230000001105 regulatory effect Effects 0.000 description 6
- 239000003973 paint Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 2
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 2
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- URRHWTYOQNLUKY-UHFFFAOYSA-N [AlH3].[P] Chemical compound [AlH3].[P] URRHWTYOQNLUKY-UHFFFAOYSA-N 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 229910001593 boehmite Inorganic materials 0.000 description 1
- 229910001648 diaspore Inorganic materials 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002103 nanocoating Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 150000003754 zirconium Chemical class 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
- C09C1/3607—Titanium dioxide
- C09C1/3653—Treatment with inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
- C09C1/3607—Titanium dioxide
- C09C1/3615—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
- C09C1/3607—Titanium dioxide
- C09C1/3615—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
- C09C1/363—Drying, calcination
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
- C09C1/3607—Titanium dioxide
- C09C1/3653—Treatment with inorganic compounds
- C09C1/3661—Coating
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
- C09C1/3692—Combinations of treatments provided for in groups C09C1/3615 - C09C1/3684
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/04—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/04—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
- C09C3/043—Drying, calcination
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/06—Treatment with inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/06—Treatment with inorganic compounds
- C09C3/063—Coating
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
The invention provides a preparation method of zirconium-aluminum coated rutile titanium dioxide, which comprises the following steps: preparing titanium dioxide slurry with aluminum hydroxide of a boehmite structure deposited on the surface; the second step is that: cooling the titanium dioxide slurry to 60-65 ℃, then adding an acidic aluminum-containing compound to adjust the pH of the titanium dioxide slurry to 6.5-7.5 to obtain aluminum hydroxide with an amorphous structure to be deposited on the surfaces of titanium dioxide particles, and the third step: and (3) carrying out filter pressing on the titanium dioxide slurry to form a filter cake, drying the filter cake, then crushing, and synchronously adding an organic auxiliary agent during crushing to obtain a finished product. The invention adds dispersant, zirconium compound, two different aluminum salt compounds and organic treating agent into titanium dioxide slurry, forms nanometer coating layer by physical and chemical adsorption on titanium dioxide particle surface, then through three washing, flash evaporation drying and crushing to obtain final product. Compared with the existing sulfuric acid method, the prepared titanium dioxide has good dispersibility and covering power and good application performance.
Description
Technical Field
The invention belongs to the technical field of titanium dioxide production, and relates to a preparation method of zirconium-aluminum coated rutile titanium dioxide.
Background
Titanium dioxide, the chemical name of which is titanium dioxide, has two crystal forms of rutile type and anatase type in industrial application. The uncoated rutile primary product has poor dispersibility when applied in an oily or aqueous system, the surface of the rutile primary product needs to be subjected to inorganic coating in order to improve the application performance of the rutile primary product, and when the uncoated rutile primary product is applied in a specific system, the surface of the rutile primary product needs to be subjected to organic coating in order to improve the application performance of the rutile titanium dioxide in the specific system. The rutile type titanium dioxide inorganic coating process mainly comprises a silicon-aluminum coating, a zirconium-silicon-aluminum coating, a phosphorus-aluminum coating, an aluminum coating and the like according to coating auxiliary agents, and a plurality of organic treating agents selected for organic coating comprise hydroxymethyl alkanes, alcamines, organic silanes and the like.
Since the production processes adopted by various companies are different, the product performances are also different, and patent CN201110099500 is that the surface of a rutile primary product is subjected to silicon and aluminum inorganic coating and organic coating, and the product has better dispersibility and weather resistance. Chinese patent CN201010228742 is an organic coating of silicon and aluminum inorganic coating agents on the surface of a rutile primary product, and the product has high covering power, high whiteness and basic weather resistance. Patent CN104119702 discloses a zirconium-aluminum coating process for rutile titanium dioxide with high gloss and high weatherability, which avoids flocculation and precipitation caused by pH change crossing isoelectric point due to directly adding acidic solution in the zirconium coating process, and simultaneously ensures uniform dispersion of zirconium, and effectively improves the gloss and weatherability of rutile titanium dioxide. Chinese patent CN103555001 discloses a coating method of titanium dioxide, which adopts low-alkalinity sodium metaaluminate to carry out zirconium-aluminum coating, silicon-aluminum coating and aluminum coating, improves the brightness of products and reduces the dosage of acid substances. Chinese patent CN104356693 discloses a zirconium-aluminum coating method for sulfuric acid process titanium dioxide, which comprises the steps of firstly adding zirconium salt, adjusting pH value, fully dispersing, and adding aluminum salt for three times, so as to improve the glossiness, covering power, weather resistance and the like of the titanium dioxide.
These studies have shown that oxides of silicon, aluminum, zirconium, phosphorus, etc. can be obtained under different conditions of raw materials, different pH, different temperature, etc., and the crystal structure of the oxides is only coated with aluminum (see document "XRD identification of aluminum oxide and aluminum hydroxide"), the aluminum oxide and hydroxide have various crystal forms, and the crystal forms have completely different uses, wherein the crystal form of aluminum hydroxide includes α -Al (OH)3, which belongs to monoclinic system and has a hexagonal plate shape and a prism shape when the crystals are intact, β -Al (OH)3 belongs to orthorhombic system, β' -Al (OH)3 belongs to triclinic system, diaspore belongs to orthorhombic system, boehmite, and orthorhombic system, etc., and meanwhile, the continuous or discontinuous, loose, and other coating effects of the film layer, and the application effects of the compact and different application systems are obviously different, which are obviously different in the existing patents, even if the coating raw materials, the coating film layers, etc. are close to each other field, the application performance is obviously different after different combinations are used.
At present, in the coating preparation process of titanium dioxide, particularly in titanium dioxide prepared by using zirconium-aluminum coating, a method of coating aluminum by using a single raw material is often adopted, namely, one of raw materials such as aluminum sulfate and sodium metaaluminate is coated under a certain pH condition, and the crystal form of aluminum hydroxide obtained by the product is mainly one of an amorphous structure and a boehmite structure. The aluminum hydroxide obtained by coating has single crystal form, and the dispersibility and the covering power of the titanium dioxide product are not ideal or the two cannot be considered at the same time. Researchers use a water-based emulsion paint test system to perform application tests on a large number of zirconium-aluminum coated titanium dioxide products, and the results show that the existing zirconium-aluminum coated titanium dioxide products have the dispersibility of more than 35 microns (the smaller the dispersibility value is, the better the dispersibility value is), the covering power (the contrast ratio method) of less than 86.5 percent (the larger the contrast ratio is, the better the contrast ratio is), the indexes of the products such as the dispersibility, the covering power and the like are not ideal, and the application requirements of increasingly improved water-based emulsion paints and other systems, especially high-end paint systems, can not be met.
Disclosure of Invention
1. The technical problem to be solved is as follows:
the existing titanium dioxide prepared by zirconium-aluminum coating adopts a single raw material to coat aluminum, and the aluminum hydroxide obtained by coating has a single crystal form, so that the dispersibility and the covering power of the titanium dioxide product are not ideal, or the two cannot be considered at the same time.
2. The technical scheme is as follows:
in order to solve the problems, the invention provides a preparation method of zirconium-aluminum coated rutile titanium dioxide, which comprises the following steps: the first step is as follows: preparing titanium dioxide slurry with aluminum hydroxide of a boehmite structure deposited on the surface; the second step is that: cooling the titanium dioxide slurry in the first step to 60-65 ℃, then adding an acidic aluminum-containing compound to adjust the pH of the titanium dioxide slurry to 6.5-7.5 to obtain aluminum hydroxide with an amorphous structure, wherein the aluminum hydroxide with the amorphous structure is deposited on the surfaces of titanium dioxide particles in the titanium dioxide slurry, and the third step is as follows: and (3) carrying out filter pressing on the titanium dioxide slurry obtained in the second step to form a filter cake, drying the filter cake, then crushing, and synchronously adding an organic auxiliary agent during crushing to obtain a finished product.
The PH value of the titanium dioxide slurry in the first step is 8.5-9.5.
In the second step, the acidic aluminum-containing compound is one or a mixture of aluminum sulfate, aluminum chloride and aluminum nitrate, and the addition amount of the acidic aluminum-containing compound is Al2O3/TiO2The mass fraction of (A) is 1.2-1.6%.
In the second step, the titanium dioxide slurry in the first step is cooled to 60-65 ℃, the pH value is adjusted to 5.0-6.0, then an acidic aluminum-containing compound is added, the pH value is maintained to be 5.0-6.0, homogenization is carried out for 20-40 min, the pH value of the titanium dioxide slurry is adjusted to be 6.5-7.5, and homogenization is carried out for 20-40 min.
The resistivity of the filter cake is 100-150 omega.m
Titanium dioxide slurry as described in the first stepObtained by the following steps: the method comprises the following steps: step S01: preparing a rutile type titanium dioxide primary product, diluting the rutile type titanium dioxide primary product until the concentration is 300-350 g/l in terms of titanium dioxide, adjusting the pH value of the titanium dioxide slurry to 9.0-10.0, and adding a dispersing agent, wherein the adding amount of the dispersing agent is TiO2The mass fraction of (A) is 0.05-0.25%; step S02: heating the titanium dioxide slurry obtained in the step S01 to 55-60 ℃, adding a zirconium-containing compound and an alkali liquor in a concurrent flow manner, then adjusting the pH of the titanium dioxide slurry to 8.0-9.0, and homogenizing for 20-40 min, wherein the zirconium-containing compound is added in an amount of ZrO2/ TiO2The mass fraction is 0.4-1.0%; step S03: heating the titanium dioxide slurry obtained in the step S02 to 65-70 ℃, adjusting the pH of the titanium dioxide slurry to 9.5-10.5 within 30-45 min by using alkali liquor, adding the dispersing agent, and homogenizing for 20-40 min, wherein the adding amount of the dispersing agent is TiO2The mass fraction of (A) is 0.05-0.10%; step S04: adding an alkaline aluminum-containing compound and an acid solution in parallel, homogenizing for 20-40 min while maintaining the pH of the titanium dioxide slurry at 8.5-9.5 in the titanium dioxide slurry obtained in the step S03, wherein the amount of the alkaline aluminum-containing compound added is Al2O3/TiO2The mass fraction of the slurry is 1.2-1.6%, and the titanium dioxide slurry with the boehmite structure deposited on the surface is prepared.
In step S01, the rutile type titanium dioxide powder is obtained by calcining, grinding, wet grinding, and water separation and classification.
The dispersant is sodium polyacrylate.
The zirconium-containing compound is one or more of zirconium oxychloride and zirconium sulfate.
The alkaline aluminum-containing compound is at least one of sodium metaaluminate and potassium metaaluminate.
3. Has the advantages that:
the invention adds inorganic dispersant, zirconium-containing compound, two different aluminum salt compounds and organic treating agent into titanium dioxide slurry in sequence, forms a nano-scale coating layer by physical and chemical adsorption on the surface of titanium dioxide particles, and then prepares the final product by the procedures of three-washing, flash evaporation drying, airflow pulverization and the like. Compared with the rutile titanium dioxide produced by the existing sulfuric acid method, the prepared titanium dioxide has good dispersibility and covering power and good application performance.
Drawings
FIG. 1 is an electron microscope image of a titanium white powder coated with a film layer.
Detailed Description
The present invention will be described in detail below with reference to the drawings and examples.
Example 1
Calcining, wet grinding, water-selecting and grading to obtain titanium dioxide slurry, diluting to 300 g/l, regulating pH value of titanium dioxide slurry to 10.0 by using alkali solution, adding sodium polyacrylate as dispersing agent, and adding TiO2Is 0.1% by mass. Then, the obtained titanium dioxide slurry is heated to 50 ℃ by introducing steam, and zirconium sulfate and sodium hydroxide solution are added in a concurrent manner, wherein the adding amount of the zirconium sulfate is ZrO2/ TiO2The mass fraction is 0.6%, the time is controlled at 50min, after the zirconium sulfate is added, the PH of the slurry is adjusted to 8.0 by dilute sulfuric acid, and the slurry is homogenized for 30 min. Then, the titanium dioxide slurry is heated to 68 ℃, the PH of the titanium dioxide slurry is adjusted to 9.5 within 40min by using sodium hydroxide solution, and then sodium polyacrylate is added, and the amount of added TiO is equal to that of added sodium polyacrylate2Is 0.05% by mass. After the addition of the sodium polyacrylate is completed, homogenization is carried out for 30 min. Under the condition that the pH value of the titanium dioxide slurry is 9.5, sodium metaaluminate and dilute sulfuric acid are added into the titanium dioxide slurry in a concurrent flow manner, wherein the adding amount of the sodium metaaluminate is Al2O3/TiO2The mass fraction of the sodium metaaluminate is 1.5 percent, the time is controlled to be about 50min, and the sodium metaaluminate is homogenized for 30min after being added. Then, the titanium dioxide slurry is cooled to 65 ℃, the PH value of the titanium dioxide slurry is adjusted to 5.5 by dilute sulfuric acid, and aluminum sulfate and sodium hydroxide solution are added into the titanium dioxide slurry in a concurrent flow manner, wherein the adding amount of the aluminum sulfate is Al2O3/TiO2The mass fraction of the aluminum sulfate is 1.5 percent, the time is controlled to be about 50min, and after the aluminum sulfate is added, the aluminum sulfate is homogenized for 30 min. The pH of the resulting titanium dioxide slurry was adjusted to 7.0 and homogenized for 30 min. Filter-pressing the titanium dioxide slurry to form a filter cake, wherein the resistivity of the filter cake is 100 omega.m, and dryingAfter drying, carrying out jet milling, and synchronously adding organic auxiliary agent in the jet milling, wherein the addition amount of the organic auxiliary agent/TiO2The mass fraction of the product is 0.3 percent, and a finished product is prepared. As shown in fig. 1.
Example 2
Calcining, wet grinding, water separating and grading to obtain titanium dioxide slurry, diluting to 350 g/l, regulating pH value of titanium dioxide slurry to 9.5 with sodium hydroxide solution, adding sodium polyacrylate as dispersant and TiO2Is 0.15% by mass. Then, the obtained titanium dioxide slurry is heated to 55 ℃ by introducing steam, and zirconium sulfate and sodium hydroxide solution are added in a concurrent manner, wherein the adding amount of the zirconium sulfate is ZrO2/ TiO2The mass fraction is 0.4%, the time is controlled at 50min, after the zirconium sulfate is added, the PH of the slurry is adjusted to 8.5 by dilute sulfuric acid, and the slurry is homogenized for 30 min. Then, the titanium dioxide slurry is heated to 65 ℃, the PH of the titanium dioxide slurry is adjusted to 10.5 within 40min by using sodium hydroxide solution, and then sodium polyacrylate is added, wherein the addition amount is TiO2Is 0.1% by mass. After the addition of the sodium polyacrylate is completed, homogenization is carried out for 30 min. Under the condition that the pH value of the titanium dioxide slurry is 9.5, sodium metaaluminate and dilute sulfuric acid are added into the titanium dioxide slurry in a concurrent flow manner, wherein the adding amount of the sodium metaaluminate is Al2O3/TiO2The mass fraction of the sodium metaaluminate is 1.4 percent, the time is controlled to be about 50min, and the sodium metaaluminate is homogenized for 20min after being added. Then, the titanium dioxide slurry is cooled to 60 ℃, the pH value of the titanium dioxide slurry is adjusted to 6.0 by dilute sulfuric acid, and aluminum sulfate and sodium hydroxide solution are added into the titanium dioxide slurry in a concurrent flow manner, wherein the adding amount of the aluminum sulfate is Al2O3/TiO2The mass fraction of the aluminum sulfate is 1.4 percent, the time is controlled to be about 50min, and after the aluminum sulfate is added, the aluminum sulfate is homogenized for 30 min. Then the pH of the obtained titanium dioxide slurry is adjusted to 6.5, and the titanium dioxide slurry is homogenized for 30 min. Filter-pressing the titanium dioxide slurry to form a filter cake, drying the filter cake to obtain a filter cake with the resistivity of 150 omega, jet milling the filter cake, and synchronously adding the organic auxiliary agent in the jet milling process, wherein the addition amount of the organic auxiliary agent/TiO2The mass fraction of the product is 0.6 percent, and a finished product is prepared. As shown in fig. 1.
Example 3
Calcining, wet grinding,Water selecting and grading to obtain titanium dioxide slurry, diluting to 330 g/l, regulating pH value of titanium dioxide slurry to 11.0 by using sodium hydroxide solution, adding sodium polyacrylate as dispersant, and adding TiO2Is 0.15% by mass. Then, the obtained titanium dioxide slurry is heated to 60 ℃ by introducing steam, and zirconium sulfate and sodium hydroxide solution are added in a concurrent manner, wherein the adding amount of the zirconium sulfate is ZrO2/TiO2The mass fraction is 0.4%, the time is controlled at 50min, after the zirconium sulfate is added, the PH of the slurry is adjusted to 9.0 by dilute sulfuric acid, and the slurry is homogenized for 30 min. Then, the titanium dioxide slurry is heated to 70 ℃, the PH of the titanium dioxide slurry is adjusted to 10 within 40min by using sodium hydroxide solution, and then sodium polyacrylate is added, wherein the addition amount is TiO2The mass fraction of (A) is 0.1%, and homogenizing for 30 min. Under the condition that the pH value of the titanium dioxide slurry is 10, adding sodium metaaluminate and dilute sulfuric acid into the titanium dioxide slurry in a concurrent flow manner, wherein the adding amount of the sodium metaaluminate is Al2O3/TiO2The mass fraction of the sodium metaaluminate is 1.6 percent, the time is controlled to be about 50min, and the sodium metaaluminate is homogenized for 40min after being added. Then, the titanium dioxide slurry is cooled to 65 ℃, diluted sulfuric acid is used for adjusting the pH value to 5.0, and aluminum sulfate and sodium hydroxide solution are added into the titanium dioxide slurry in a concurrent flow mode, wherein the adding amount of the aluminum sulfate is Al2O3/TiO2The mass fraction of the aluminum sulfate is 1.5 percent, the time is controlled to be about 50min, and the aluminum sulfate is homogenized for 30min after being added. Then the pH of the obtained titanium dioxide slurry is adjusted to 7.5, and the titanium dioxide slurry is homogenized for 40 min. Filter-pressing the titanium dioxide slurry to form a filter cake, wherein the resistivity of the filter cake is 130 omega, drying, and then carrying out jet milling, wherein organic auxiliary agent is synchronously added during jet milling, and the addition amount of the organic auxiliary agent/TiO is used as the addition amount2The mass fraction of the product is 0.8 percent, and a finished product is prepared. As shown in fig. 1.
Example 4
Calcining, wet grinding, water separating and grading to obtain titanium dioxide slurry, diluting to 330 g/l, regulating pH value of titanium dioxide slurry to 10.0 by using sodium hydroxide solution, adding sodium polyacrylate as dispersing agent, adding P2O5/TiO2Is 0.2% by mass. Then, the obtained titanium dioxide slurry is heated by introducing steam to the titanium dioxide slurryZirconium sulfate and sodium hydroxide solution are added at 60 ℃ in parallel, and the adding amount of the zirconium sulfate is ZrO2/TiO2The mass fraction is 0.6%, the time is controlled at 50min, after the zirconium sulfate is added, the PH of the slurry is adjusted to 8.5 by dilute sulfuric acid, and the slurry is homogenized for 30 min. Then, the titanium dioxide slurry is heated to 65 ℃, the PH of the titanium dioxide slurry is adjusted to 10 within 40min by using sodium hydroxide solution, and then sodium polyacrylate is added, wherein the addition amount is TiO2The mass fraction of (A) is 0.05%, and the homogenization is carried out for 30 min. Under the condition that the pH value of the titanium dioxide slurry is 10, adding sodium metaaluminate and dilute sulfuric acid into the titanium dioxide slurry in a concurrent flow manner, wherein the adding amount of the sodium metaaluminate is Al2O3/TiO2The mass fraction of the sodium metaaluminate is 1.3 percent, the time is controlled to be about 50min, and the sodium metaaluminate is homogenized for 40min after being added. Then, the titanium dioxide slurry is cooled to 65 ℃, diluted sulfuric acid is used for adjusting the pH value to 5.0, and aluminum sulfate and sodium hydroxide solution are added into the titanium dioxide slurry in a concurrent flow mode, wherein the adding amount of the aluminum sulfate is Al2O3/TiO2The mass fraction of the aluminum sulfate is 1.3 percent, the time is controlled to be about 50min, and after the aluminum sulfate is added, the aluminum sulfate is homogenized for 30 min. Then the pH of the obtained titanium dioxide slurry is adjusted to 7.0, and the titanium dioxide slurry is homogenized for 40 min. Filter-pressing the titanium dioxide slurry to form a filter cake, drying the filter cake to obtain a filter cake with the resistivity of 110 omega, jet milling the filter cake, and synchronously adding the organic auxiliary agent in the jet milling process, wherein the addition amount of the organic auxiliary agent/TiO2The mass fraction of the product is 0.5 percent, and a finished product is prepared. As shown in fig. 1.
Example 5
Calcining, wet grinding, water separating and grading to obtain titanium dioxide slurry, diluting to 330 g/l, regulating pH value of titanium dioxide slurry to 10.5 with sodium hydroxide solution, adding sodium polyacrylate as dispersant and TiO2Is 0.15% by mass. Then, the obtained titanium dioxide slurry is heated to 50 ℃ by introducing steam, and zirconium sulfate and sodium hydroxide solution are added in a concurrent manner, wherein the adding amount of the zirconium sulfate is ZrO2/TiO2The mass fraction is 0.5%, the time is controlled at 50min, after the zirconium sulfate is added, the PH of the slurry is adjusted to 8.0 by dilute sulfuric acid, and the slurry is homogenized for 30 min. Then, the titanium dioxide slurry is heated to 68 ℃, and is adjusted within 40min by using sodium hydroxide solutionAdjusting the pH of the titanium dioxide slurry to 10.5, adding sodium polyacrylate in an amount of TiO2The mass fraction of (A) is 0.1%, and homogenizing for 30 min. Under the condition that the pH value of the titanium dioxide slurry is 10.5, sodium metaaluminate and dilute sulfuric acid are added into the titanium dioxide slurry in a concurrent flow manner, wherein the adding amount of the sodium metaaluminate is Al2O3/TiO2The mass fraction of the sodium metaaluminate is 1.3 percent, the time is controlled to be about 50min, and the sodium metaaluminate is homogenized for 30min after being added. Then, the titanium dioxide slurry is cooled to 65 ℃, diluted sulfuric acid is used for adjusting the pH value to 6.0, and aluminum sulfate and sodium hydroxide solution are added into the titanium dioxide slurry in a concurrent flow mode, wherein the adding amount of the aluminum sulfate is Al2O3/TiO2The mass fraction of the aluminum sulfate is 1.3 percent, the time is controlled to be about 50min, and after the aluminum sulfate is added, the aluminum sulfate is homogenized for 30 min. Then the pH of the obtained titanium dioxide slurry is adjusted to 7.0, and the titanium dioxide slurry is homogenized for 30 min. Filter-pressing the titanium dioxide slurry to form a filter cake, wherein the resistivity of the filter cake is 140 omega.m, drying, and then carrying out jet milling, wherein organic auxiliary agent is synchronously added during jet milling, and the addition amount of the organic auxiliary agent/TiO2The mass fraction of the product is 0.5 percent, and a finished product is prepared. As shown in fig. 1.
Comparative experiment
Calcining, wet grinding, water separating and grading to obtain titanium dioxide slurry, diluting to 330 g/l, regulating pH value of titanium dioxide slurry to 10.0 with sodium hydroxide solution, adding inorganic dispersant sodium hexametaphosphate, and adding sodium hexametaphosphate in the amount of P2O5/TiO2Is 0.2% by mass. Then, the obtained titanium dioxide slurry is heated to 55 ℃ by introducing steam, and zirconium sulfate and sodium hydroxide solution are added in a concurrent manner, wherein the adding amount of the zirconium sulfate is ZrO2/TiO2The mass fraction is 0.4%, the time is controlled at 50min, after the zirconium sulfate is added, the PH of the slurry is adjusted to 8.3 by dilute sulfuric acid, and the slurry is homogenized for 30 min. Then, the titanium dioxide slurry is cooled to 62 ℃, diluted sulfuric acid is used for adjusting the pH value to 5.5, and aluminum sulfate and sodium hydroxide solution are added into the titanium dioxide slurry in a concurrent flow mode, wherein the adding amount of the aluminum sulfate is Al2O3/TiO2The mass fraction of the aluminum sulfate is 3.0 percent, the time is controlled to be about 70min, and after the aluminum sulfate is added, the aluminum sulfate is homogenized for 50 min. Then adjusting the pH of the obtained titanium dioxide slurry to7.2, homogenizing for 40 min. Filter-pressing the titanium dioxide slurry to form a filter cake, wherein the resistivity of the filter cake is 140 omega.m, drying, and then carrying out jet milling, wherein organic auxiliary agent is synchronously added during jet milling, and the addition amount of the organic auxiliary agent/TiO2The mass fraction of the product is 0.5 percent, and a finished product is prepared.
The sample is subjected to application test analysis in a water-based emulsion paint system, and the test method comprises the following steps: the addition of the titanium dioxide formula is 10%, a vibrator is adopted for dispersing in the paint preparation process, the dispersion time is 40min, then a 100-micron wet grinding preparation device is used for preparing the film on the polyester film in the same direction, the dispersibility is tested, and the contrast ratio (covering power) is detected after drying. The results are shown in the following table:
| sample name | Dispersity mu m | Contrast ratio (hiding power)% |
| Example 1 sample | 25 | 87.48 |
| Example 2 sample | 25 | 87.51 |
| Example 3 sample | 25 | 87.45 |
| Example 4 sample | 25 | 87.48 |
| Example 5 sample | 25 | 87.42 |
| Comparative experiment sample | 35 | 86.21 |
Note: the lower the dispersion value, the better the product dispersion; the higher the contrast ratio, the better the product hiding.
According to the test results, the dispersibility and the covering power of the product are greatly improved, and the application performance of the product is well improved by using the sample prepared by the method.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A preparation method of zirconium-aluminum coated rutile titanium dioxide comprises the following steps: the first step is as follows: preparing titanium dioxide slurry with aluminum hydroxide of a boehmite structure deposited on the surface; the second step is that: cooling the titanium dioxide slurry in the first step to 60-65 ℃, then adding an acidic aluminum-containing compound to adjust the pH of the titanium dioxide slurry to 6.5-7.5 to obtain aluminum hydroxide with an amorphous structure, wherein the aluminum hydroxide with the amorphous structure is deposited on the surfaces of titanium dioxide particles in the titanium dioxide slurry, and the third step is as follows: and (3) carrying out filter pressing on the titanium dioxide slurry obtained in the second step to form a filter cake, drying the filter cake, then crushing, and synchronously adding an organic auxiliary agent during crushing to obtain a finished product.
2. The method of claim 1, wherein: the PH value of the titanium dioxide slurry in the first step is 8.5-9.5.
3. The method of claim 1, wherein: in the second step, the acidic aluminum-containing compound is one or a mixture of aluminum sulfate, aluminum chloride and aluminum nitrate, and the addition amount of the acidic aluminum-containing compound is Al2O3/TiO2The mass fraction of (A) is 1.2-1.6%.
4. The method of claim 1, wherein: in the second step, the titanium dioxide slurry in the first step is cooled to 60-65 ℃, the pH value is adjusted to 5.0-6.0, then an acidic aluminum-containing compound is added, the pH value is maintained to be 5.0-6.0, homogenization is carried out for 20-40 min, the pH value of the titanium dioxide slurry is adjusted to be 6.5-7.5, and homogenization is carried out for 20-40 min.
5. The method of claim 1, wherein: the resistivity of the filter cake is 100-150 omega.
6. The method of any one of claims 1-5, wherein: the titanium dioxide slurry described in the first step is obtained by: the method comprises the following steps: step S01: preparing a rutile type titanium dioxide primary product, diluting the rutile type titanium dioxide primary product until the concentration is 300-350 g/l in terms of titanium dioxide, adjusting the pH value of the titanium dioxide slurry to 9.0-10.0, and adding a dispersing agent, wherein the adding amount of the dispersing agent is TiO2The mass fraction of (A) is 0.05-0.25%; step S02: heating the titanium dioxide slurry obtained in the step S01 to 55-60 ℃, adding a zirconium-containing compound and an alkali liquor in a concurrent flow manner, then adjusting the pH of the titanium dioxide slurry to 8.0-9.0, and homogenizing for 20-40 min, wherein the zirconium-containing compound is added in an amount of ZrO2/ TiO2The mass fraction is 0.4-1.0%; step S03: heating the titanium dioxide slurry obtained in the step S02 to 65-70 ℃, adjusting the pH of the titanium dioxide slurry to 9.5-10.5 within 30-45 min by using alkali liquor, adding the dispersing agent, and homogenizing for 20-40 min, wherein the adding amount of the dispersing agent is TiO2The mass fraction of (A) is 0.05-0.10%; step S04: adding an alkaline aluminum-containing compound and an acid solution in parallel, homogenizing for 20-40 min while maintaining the pH of the titanium dioxide slurry at 8.5-9.5 in the titanium dioxide slurry obtained in the step S03, wherein the amount of the alkaline aluminum-containing compound added is Al2O3/TiO2The mass fraction of the slurry is 1.2-1.6%, and the titanium dioxide slurry with the boehmite structure deposited on the surface is prepared.
7. The method of claim 6, wherein: in step S01, the rutile type titanium dioxide powder is obtained by calcining, grinding, wet grinding, and water separation and classification.
8. The method of claim 6, wherein: the dispersant is sodium polyacrylate.
9. The method of claim 6, wherein: the zirconium-containing compound is one or more of zirconium oxychloride and zirconium sulfate.
10. The method of claim 6, wherein: the alkaline aluminum-containing compound is at least one of sodium metaaluminate and potassium metaaluminate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911316679.4A CN111040476A (en) | 2019-12-19 | 2019-12-19 | Preparation method of zirconium-aluminum coated rutile titanium dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911316679.4A CN111040476A (en) | 2019-12-19 | 2019-12-19 | Preparation method of zirconium-aluminum coated rutile titanium dioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111040476A true CN111040476A (en) | 2020-04-21 |
Family
ID=70237719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911316679.4A Withdrawn CN111040476A (en) | 2019-12-19 | 2019-12-19 | Preparation method of zirconium-aluminum coated rutile titanium dioxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111040476A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114106590A (en) * | 2021-11-30 | 2022-03-01 | 龙佰集团股份有限公司 | Slurry titanium dioxide and preparation method thereof |
| CN114149698A (en) * | 2021-12-18 | 2022-03-08 | 中信钛业股份有限公司 | Preparation method of special titanium dioxide for outdoor building coating |
| CN114163844A (en) * | 2021-12-19 | 2022-03-11 | 中信钛业股份有限公司 | Production method of titanium dioxide pigment with high achromatism and high weather resistance |
| CN114539810A (en) * | 2022-03-01 | 2022-05-27 | 昆明冶金研究院有限公司 | High-dispersion modified silica fume and preparation method thereof |
| CN114539811A (en) * | 2022-03-01 | 2022-05-27 | 昆明冶金研究院有限公司 | A kind of high-coverage easily dispersible microsilica powder and preparation method thereof |
| CN114539815A (en) * | 2022-03-01 | 2022-05-27 | 昆明冶金研究院有限公司 | A kind of modified microsilica powder with high coverage and high dispersibility and preparation method thereof |
| CN115418117A (en) * | 2022-08-04 | 2022-12-02 | 上海颜钛实业有限公司 | Production method of titanium dioxide pigment special for powder coating |
| CN117070081A (en) * | 2023-08-09 | 2023-11-17 | 山东道恩钛业股份有限公司 | Preparation method of titanium dioxide for damp-heat resistant protective coating |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010526015A (en) * | 2007-05-03 | 2010-07-29 | トロノックス エルエルシー | Preparation of titanium dioxide pigments treated with coprecipitated mixed oxides |
| CN101857736A (en) * | 2010-07-16 | 2010-10-13 | 四川龙蟒钛业股份有限公司 | Production method of high-light-fastness rutile type titanium dioxide |
| CN103112891A (en) * | 2013-02-25 | 2013-05-22 | 南京钛白化工有限责任公司 | Preparation method of high-performance rutile titanium white |
-
2019
- 2019-12-19 CN CN201911316679.4A patent/CN111040476A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010526015A (en) * | 2007-05-03 | 2010-07-29 | トロノックス エルエルシー | Preparation of titanium dioxide pigments treated with coprecipitated mixed oxides |
| CN101857736A (en) * | 2010-07-16 | 2010-10-13 | 四川龙蟒钛业股份有限公司 | Production method of high-light-fastness rutile type titanium dioxide |
| CN103112891A (en) * | 2013-02-25 | 2013-05-22 | 南京钛白化工有限责任公司 | Preparation method of high-performance rutile titanium white |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114106590A (en) * | 2021-11-30 | 2022-03-01 | 龙佰集团股份有限公司 | Slurry titanium dioxide and preparation method thereof |
| CN114106590B (en) * | 2021-11-30 | 2022-12-23 | 龙佰集团股份有限公司 | Slurry titanium dioxide and preparation method thereof |
| CN114149698A (en) * | 2021-12-18 | 2022-03-08 | 中信钛业股份有限公司 | Preparation method of special titanium dioxide for outdoor building coating |
| CN114163844A (en) * | 2021-12-19 | 2022-03-11 | 中信钛业股份有限公司 | Production method of titanium dioxide pigment with high achromatism and high weather resistance |
| CN114163844B (en) * | 2021-12-19 | 2022-11-15 | 中信钛业股份有限公司 | Production method of titanium dioxide pigment with high achromatism and high weather resistance |
| CN114539810A (en) * | 2022-03-01 | 2022-05-27 | 昆明冶金研究院有限公司 | High-dispersion modified silica fume and preparation method thereof |
| CN114539811A (en) * | 2022-03-01 | 2022-05-27 | 昆明冶金研究院有限公司 | A kind of high-coverage easily dispersible microsilica powder and preparation method thereof |
| CN114539815A (en) * | 2022-03-01 | 2022-05-27 | 昆明冶金研究院有限公司 | A kind of modified microsilica powder with high coverage and high dispersibility and preparation method thereof |
| CN115418117A (en) * | 2022-08-04 | 2022-12-02 | 上海颜钛实业有限公司 | Production method of titanium dioxide pigment special for powder coating |
| CN115418117B (en) * | 2022-08-04 | 2023-09-22 | 上海颜钛实业有限公司 | A method for producing special titanium dioxide pigment for powder coatings |
| CN117070081A (en) * | 2023-08-09 | 2023-11-17 | 山东道恩钛业股份有限公司 | Preparation method of titanium dioxide for damp-heat resistant protective coating |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111040476A (en) | Preparation method of zirconium-aluminum coated rutile titanium dioxide | |
| CN109952348B (en) | Composite pigment and preparation method thereof, coating composition containing composite pigment, and coating film | |
| DE69607643T2 (en) | TIO2 PIGMENT COATED WITH SMALL, INORGANIC PARTICLES | |
| DE69016099T2 (en) | Chromatic pigments based on titanium dioxide. | |
| JP5363459B2 (en) | Preparation of titanium dioxide pigments treated with coprecipitated mixed oxides | |
| AU2015263114B2 (en) | Coated titanium dioxide dispersions | |
| DE69602221T2 (en) | Composite pigment material | |
| CN103112891A (en) | Preparation method of high-performance rutile titanium white | |
| Ninness et al. | Formation of a thin TiO2 layer on the surfaces of silica and kaolin pigments through atomic layer deposition | |
| US3251705A (en) | Process for improving gloss retention and chalking resistance of rutile pigments | |
| AU2024204521B2 (en) | Flaky titanate and method for production thereof, and use thereof | |
| TW201609554A (en) | Titanium dioxide | |
| CA2849758C (en) | Treated inorganic pigments having improved dispersability and use thereof in coating compositions | |
| CA2849773C (en) | Treated inorganic core particles having improved dispersability | |
| Li et al. | Hydrous alumina/silica double-layer surface coating of TiO2 pigment | |
| AU2014365857B2 (en) | Method for coating the surface of inorganic particles, in particular titanium dioxide pigment particles | |
| US5338354A (en) | Composite pigmentary material | |
| CN113583480A (en) | Preparation method of high-end universal titanium dioxide | |
| JP2004256341A (en) | Production method of rutile-type, rod-shaped titanium dioxide | |
| AT233144B (en) | Process for the production of a water-wettable rutile pigment | |
| Liao et al. | Composite dispersion of nanosized AlOOH in liquid phase |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200421 |
|
| WW01 | Invention patent application withdrawn after publication |