CN101985364A - Preparation method of rutile titanium dioxide with stable lattice - Google Patents
Preparation method of rutile titanium dioxide with stable lattice Download PDFInfo
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- CN101985364A CN101985364A CN 201010524501 CN201010524501A CN101985364A CN 101985364 A CN101985364 A CN 101985364A CN 201010524501 CN201010524501 CN 201010524501 CN 201010524501 A CN201010524501 A CN 201010524501A CN 101985364 A CN101985364 A CN 101985364A
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- metatitanic acid
- rutile
- titanium dioxide
- hydrolysis
- meter
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 123
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- LLZRNZOLAXHGLL-UHFFFAOYSA-J Titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 claims abstract description 71
- 235000010215 titanium dioxide Nutrition 0.000 claims abstract description 40
- 210000004940 Nucleus Anatomy 0.000 claims abstract description 17
- 229910000348 titanium sulfate Inorganic materials 0.000 claims abstract description 15
- HDUMBHAAKGUHAR-UHFFFAOYSA-J titanium(4+);disulfate Chemical compound [Ti+4].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O HDUMBHAAKGUHAR-UHFFFAOYSA-J 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 239000012065 filter cake Substances 0.000 claims abstract description 13
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Inorganic materials [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 13
- 238000001354 calcination Methods 0.000 claims abstract description 12
- 238000004061 bleaching Methods 0.000 claims abstract description 7
- 238000006460 hydrolysis reaction Methods 0.000 claims description 34
- 239000004408 titanium dioxide Substances 0.000 claims description 28
- OGIDPMRJRNCKJF-UHFFFAOYSA-N TiO Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 17
- 230000001131 transforming Effects 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 5
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 239000000047 product Substances 0.000 abstract description 8
- 229910000329 aluminium sulfate Inorganic materials 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000049 pigment Substances 0.000 abstract description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract description 2
- 235000011007 phosphoric acid Nutrition 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 abstract description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H Aluminium sulfate 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 abstract 1
- 235000011128 aluminium sulphate Nutrition 0.000 abstract 1
- 238000005039 chemical industry Methods 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 14
- 238000005296 abrasive Methods 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- 239000007844 bleaching agent Substances 0.000 description 7
- 230000003301 hydrolyzing Effects 0.000 description 7
- 159000000013 aluminium salts Chemical class 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 150000003751 zinc Chemical class 0.000 description 3
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- CUXQLKLUPGTTKL-UHFFFAOYSA-M Microcosmic salt Chemical compound [NH4+].[Na+].OP([O-])([O-])=O CUXQLKLUPGTTKL-UHFFFAOYSA-M 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- -1 papermaking Substances 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000001038 titanium pigment Substances 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Abstract
The invention relates to a preparation method of rutile titanium dioxide with stable lattice, belonging to the manufacturing technology of chemical industry product. The method comprises the following steps of: a, using 200g/L of titanium sulfate solution for the preparation of hydrolyzed seed crystals; b, adding 2.1 to 6.5% of the prepared seed crystals with homogeneous crystal nucleus by weight of TiO2 into the titanium sulfate solution for being heated and hydrolyzed, and preparing hydrolyzed metatitanic acid under the stirring speed of 30 to 70rpm; c, water rinsing and bleaching the hydrolyzed metatitanic acid, adding rutile calcining seed crystals and then bleaching, controlling the content of Fe2O3 to be less than 30ppm, and then adding 0.45 to 0.52% of KOH, 0.02 to 0.05% of H3PO4 and 0.20 to 0.55% of Al2(SO4)3 by weight of TiO2 in the metatitanic acid for treatment; and d. evacuating the treated metatitanic acid into filter cake under vacuum, and calcining at 900 to 980 DEG C, cooling and crushing the filter cake to obtain the rutile titanium dioxide. The rutile titanium dioxide production prepared according to the method of the invention has good pigment performance and stable rutile lattice.
Description
Technical field
The invention belongs to the manufacturing technology of Chemicals, relate to the stable Rutile type Titanium Dioxide preparation method of a kind of lattice.
Background technology
Titanium dioxide is widely used in numerous industries such as coating, paint, papermaking, plastics, electrical equipment, in various fields, when with titanium dioxide during as white pigment, because absorbing ultraviolet ray, TiO2 causes photochemical activity, the ultraviolet ray major part that is absorbed of filming is absorbed by TiO2, only accounted for very small portion by what base-material absorbed, after TiO2 has absorbed ultraviolet ray, inspire electronics, in lattice, stay the hole of positively charged, this excitation electron and hole reconfigure in lattice possibly, also may dissociate to the lattice surface, thereby cause being colored the degraded of material.
In order to reduce TiO2; the photochemical activity of particularly outdoor rutile TiO 2; improve its weathering resistance; can adopt on the one hand at the aftertreatment of titanium dioxide oxide compound rutile-type crystal grain matrix is coated with silicon, aluminium and the zirconium of densification; form the method for sealer coat at the TiO2 grain surface; on the other hand; for suppressing its photochemical activity; can in production process of titanium pigment, be added in the element zinc and the aluminium that can play stabilization in the lattice of rutile-type; make the hole in the lattice and the stationkeeping of electronics, prevent that it from arriving the surface of lattice.The integrated application of these two kinds of technology can reduce the photochemical activity of TiO2 to a great extent, thereby produces the product of high-weatherability.
Existing producer stablizes the lattice of titanium dioxide by the salt processing method that improves the zinc salt dosage, thereby improves weathering resistance, but its calcining product easy-sintering, and pigment performance can be subjected to bigger influence, and zinc salt costs an arm and a leg the cost height.Also useful aluminium salt is handled the technology that improves weathering resistance, domestic report such as the patent No. CN1559913A that has aluminium salt to handle discloses: a kind of by potassium, phosphorus, aluminium crystalline phase control agent, coordinated the opposition contradictory relation between crystalline phase conversion reducing power, transformation efficiency and the whiteness, but aluminium salt is handled the calcining temperature height, not only can influence the performance of product, and the energy consumption height.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of and can be converted into rutile-type at lower temperature lower calcination, and can improve the stable Rutile type Titanium Dioxide preparation method of lattice of the lattice stability of rutile titanium white powder product.
Method of the present invention may further comprise the steps:
A. the titanium sulfate solution of working concentration 200g/L, a part is used to prepare hydrolysis crystal seed, and another part is used for subsequent step and prepares the hydrolysis metatitanic acid;
The crystal seed that b. will prepare the homogeneous nucleus that generates, add heating hydrolysis in the above-mentioned titanium sulfate liquid according to weight in the amount of TiO2 2.1-6.5%, preferred dosage is 3-6.5%, the speed that stirs in the control hydrolysis process is 30-70rpm, preferable speed is 50-70rpm, makes the required hydrolysis metatitanic acid of calcining;
C. with the washing of hydrolysis metatitanic acid, the Fe that washes in the metatitanic acid of back is controlled in bleaching, and adding rutile calcining seeds post rinsing
2O
3Content is less than 30ppm, and adding accounts for TiO in the metatitanic acid again
2Weight 0.45-0.52% with K
2KOH, the 0.02-0.05% of O meter with P
2O
5The H of meter
3PO
4, 0.20-0.55% with Al
2O
3The Al of meter
2(SO
4)
3Handle;
D. the metatitanic acid after will handling is pumped into filter cake under vacuum, be fired to the rutile transformation efficiency in 900-980 ℃ and reach more than 99%, and cooling, pulverizing obtain required Rutile type Titanium Dioxide.
The present invention passes through the particle diameter of metatitanic acid and the control of size distribution, and to the adjustment of the dosage of sylvite, microcosmic salt and aluminium salt, make the pigment performance of the Rutile type Titanium Dioxide product that under lower calcining temperature, prepares such as whiteness, scattering force can remain on higher level, and lattice of rutile type is stable, the good weatherability of titanium dioxide.
Embodiment
Comparative example 1:
Titanium sulfate liquid adds in the alkali, and the preparation nucleus presses 2.1% (with TiO with this nucleus
2Meter) dosage adds heating hydrolysis generation metatitanic acid in the titanium sulfate liquid for the treatment of hydrolysis, and the speed that stirs in the hydrolytic process is 30rpm, and crystal seeds of rutile, rinsing are washed, bleach, added to metatitanic acid, Fe in the metatitanic acid after control is washed
2O
3Content is less than 30ppm, and adding accounts for TiO in the metatitanic acid
2The KOH of amount 0.52% is (with K
2The O meter), 0.1% H
3PO
4(with P
2O
5Meter), 0.25% ZnO (in ZnO), be fired to the rutile transformation efficiency 940 ℃ of temperature and reach more than 99%, cooling must required titanium dioxide with broken 40 minutes of three barreling abrasive dusts.
Comparative example 2:
Adopted comparative example 1 same hydrolysis metatitanic acid, with metatitanic acid washing, bleaching, adding crystal seeds of rutile, rinsing, Fe in the metatitanic acid of back is washed in control
2O
3Content is less than 30ppm, and adding accounts for TiO in the metatitanic acid
2The KOH of amount 0.52% (with
K20Meter), 0.1% H3PO4 is (with P
2O
5Meter), 0.50% ZnO (in ZnO), the metatitanic acid after handling is pumped into filter cake under vacuum, be fired to the rutile transformation efficiency 920 ℃ of temperature and reach more than 99%, cooling must required titanium dioxide with broken 40 minutes of three barreling abrasive dusts.
Comparative example 3:
Adopted comparative example 1 same hydrolysis metatitanic acid, with metatitanic acid washing, bleaching, adding crystal seeds of rutile, rinsing, Fe in the metatitanic acid of back is washed in control
2O
3Content is less than 30ppm, and adding accounts for TiO in the metatitanic acid
2The KOH of amount 0.52% is (with K
2The O meter), 0.1% H
3PO
4(with P
2O
5Meter), 1.0% ZnO (in ZnO), the metatitanic acid after handling is pumped into filter cake under vacuum, be fired to the rutile transformation efficiency 900 ℃ of temperature and reach more than 99%, cooling must required titanium dioxide with broken 40 minutes of three barreling abrasive dusts.
Embodiment 1:
Adopt comparative example 1 same hydrolysis metatitanic acid, with metatitanic acid washing, bleaching, adding crystal seeds of rutile, rinsing, Fe in the metatitanic acid of back is washed in control
2O
3Content is less than 30ppm, and adding accounts for TiO in the metatitanic acid
2The KOH of amount 0.45% (with
K20Meter), 0.02% H
3PO
4(with P
2O
5Meter), 0.2% Al
2(SO
4)
3(with Al
2O
3Meter), the metatitanic acid after handling is pumped into filter cake under vacuum, is fired to the rutile transformation efficiency 980 ℃ of temperature and reaches more than 99%, cooling got required titanium dioxide in broken 40 minutes with three barreling abrasive dusts.
Embodiment 2:
Press comparative example 1 preparation nucleus, nucleus is pressed 3.0% (with TiO
2Meter) dosage adds heating hydrolysis generation metatitanic acid in the titanium sulfate liquid for the treatment of hydrolysis, and the speed that stirs in the hydrolytic process is 50rpm, and crystal seeds of rutile, rinsing are washed, bleach, added to metatitanic acid, Fe in the metatitanic acid after control is washed
2O
3Content is less than 30ppm, and adding accounts for TiO in the metatitanic acid
2The KOH of amount 0.48% is (with K
2The O meter), 0.02% H
3PO
4(with P
2O
5Meter), 0.35% Al
2(SO
4)
3(with Al
2O
3Meter), the metatitanic acid after handling is pumped into filter cake under vacuum, is fired to the rutile transformation efficiency 940 ℃ of temperature and reaches more than 99%, cooling got required titanium dioxide in broken 40 minutes with three barreling abrasive dusts.
Embodiment 3:
The same preparation nucleus presses 3.5% (with TiO with nucleus
2Meter) dosage adds heating hydrolysis generation metatitanic acid in the titanium sulfate liquid for the treatment of hydrolysis, and the speed that stirs in the hydrolytic process is 50rpm, and crystal seeds of rutile, rinsing are washed, bleach, added to metatitanic acid, Fe in the metatitanic acid after control is washed
2O
3Content is less than 30ppm, and adding accounts in the metatitanic acid
TiO2The KOH of amount 0.48% is (with K
2The O meter), 0.02% H
3PO
4(with P
2O
5Meter), 0.40%
A12(SO
4)
3(with Al
2O
3Meter), the metatitanic acid after handling is pumped into filter cake under vacuum, is fired to the rutile transformation efficiency 930 ℃ of temperature and reaches more than 99%, cooling got required titanium dioxide in broken 40 minutes with three barreling abrasive dusts.
Embodiment 4:
The same preparation nucleus presses 4.8% (with TiO with this nucleus
2Meter) dosage adds heating hydrolysis generation metatitanic acid in the titanium sulfate liquid for the treatment of hydrolysis, and the speed that stirs in the hydrolytic process is 60rpm, and crystal seeds of rutile, rinsing are washed, bleach, added to metatitanic acid, Fe in the metatitanic acid after control is washed
2O
3Content is less than 30ppm, and adding accounts for TiO in the metatitanic acid
2The KOH of amount 0.52% is (with K
2The O meter), 0.05% H
3PO
4(with P
2O
5Meter), 0.45% Al
2(SO
4)
3(with Al
2O
3Meter), the metatitanic acid after handling is pumped into filter cake under vacuum, is fired to the rutile transformation efficiency 925 ℃ of temperature and reaches more than 99%, cooling got required titanium dioxide in broken 40 minutes with three barreling abrasive dusts.
Embodiment 5:
The same preparation nucleus presses 5.5% (with TiO with this nucleus
2Meter) dosage adds heating hydrolysis generation metatitanic acid in the titanium sulfate liquid for the treatment of hydrolysis, and the speed that stirs in the hydrolytic process is 60rpm, and crystal seeds of rutile, rinsing are washed, bleach, added to metatitanic acid, Fe in the metatitanic acid after control is washed
2O
3Content is less than 30ppm, and adding accounts for TiO in the metatitanic acid
2The KOH of amount 0.52% is (with K
2The O meter), 0.05% H
3PO
4(with P
2O
5Meter), 0.45% Al
2(SO
4)
3(with Al
2O
3Meter), the metatitanic acid after handling is pumped into filter cake under vacuum, is fired to the rutile transformation efficiency 925 ℃ of temperature and reaches more than 99%, cooling got required titanium dioxide in broken 40 minutes with three barreling abrasive dusts.
Embodiment 6:
The same preparation nucleus presses 6.0% (with TiO with this nucleus
2Meter) dosage adds heating hydrolysis generation metatitanic acid in the titanium sulfate liquid for the treatment of hydrolysis, and the speed that stirs in the hydrolytic process is 70rpm, and crystal seeds of rutile, rinsing are washed, bleach, added to metatitanic acid, Fe in the metatitanic acid after control is washed
2O
3Content is less than 30ppm, and adding accounts for TiO in the metatitanic acid
2The KOH of amount 0.52% is (with K
2The O meter), 0.05% H
3PO
4(with P
2O
5Meter), 0.50% Al
2(SO
4)
3(with Al
2O
3Meter), the metatitanic acid after handling is pumped into filter cake under vacuum, is fired to the rutile transformation efficiency 925 ℃ of temperature and reaches more than 99%, cooling got required titanium dioxide in broken 40 minutes with three barreling abrasive dusts.
Embodiment 7:
The same preparation nucleus presses 6.5% (with TiO with this nucleus
2Meter) dosage adds heating hydrolysis generation metatitanic acid in the titanium sulfate liquid for the treatment of hydrolysis, and the speed that stirs in the hydrolytic process is 70rpm, and crystal seeds of rutile, rinsing are washed, bleach, added to metatitanic acid, Fe in the metatitanic acid after control is washed
2O
3Content is less than 30ppm, and adding accounts for TiO in the metatitanic acid
2The KOH of amount 0.52% is (with K
2The O meter), 0.05% H
3PO
4(with P
2O
5Meter), 0.55% Al
2(SO
4)
3(with Al
2O
3Meter), the metatitanic acid after handling is pumped into filter cake under vacuum, is fired to the rutile transformation efficiency 920 ℃ of temperature and reaches more than 99%, cooling got required titanium dioxide in broken 40 minutes with three barreling abrasive dusts.
Test the particle diameter and the distribution of the metatitanic acid of above-mentioned comparative example and embodiment preparation respectively, pulverize the whiteness and the scattering force of back sample, and sample is processed into acrylic resin paint by certain prescription, after the spray plate is made paint film, ultraviolet accelerated deterioration (UVA) test in 500 hours Δ E index is as follows, Δ E is low more, and the titanium dioxide lattice is stable more, and weathering resistance is good more:
Above data presentation, adopt the mode that increases zinc salt that metatitanic acid is carried out salt and handle (comparative example 1-3), can improve the weathering resistance of titanium dioxide, calcining temperature is along with the increase of ZnO decreases, but since the sintering of material, the also corresponding reduction of the whiteness of titanium dioxide and scattering force.
Adopt the inventive method to handle (embodiment 1-7) with aluminium salt pair metatitanic acid, stirring velocity when dosage by adjusting hydrolysis crystal seed and hydrolysis, reduce the particle diameter and the size distribution of hydrolysis metatitanic acid, calcining temperature in the time of can reducing metatitanic acid and use aluminium salt to deal with agent, not only reduced energy consumption, guarantee the whiteness and the scattering force of product, and improved the lattice stability of Rutile type Titanium Dioxide, improved the weather resistance of product.
Claims (3)
1. Rutile type Titanium Dioxide preparation method that lattice is stable is characterized in that: may further comprise the steps,
The titanium sulfate solution of working concentration 200g/L, a part are used to prepare hydrolysis crystal seed, and another part is used for subsequent step and prepares the hydrolysis metatitanic acid;
The crystal seed of the homogeneous nucleus that will preparation generates adds heating hydrolysis in the above-mentioned titanium sulfate liquid according to weight in the amount of TiO2 2.1-6.5%, and the speed that stirs in the control hydrolysis process is 30-70rpm, makes the required hydrolysis metatitanic acid of calcining;
With the washing of hydrolysis metatitanic acid, bleaching, and add rutile calcining seeds post rinsing, the Fe in the metatitanic acid of back is washed in control
2O
3Content is less than 30ppm, and adding accounts for TiO in the metatitanic acid again
2The 0.45-0.52% of weight with K
2KOH, the 0.02-0.05% of O meter with P
2O
5The H of meter
3PO
4, 0.20-0.55% with Al
2O
3The Al of meter
2(SO
4)
3Handle;
Metatitanic acid after handling is pumped into filter cake under vacuum, is fired to the rutile transformation efficiency in 900-980 ℃ and reaches more than 99%, cooling, pulverizing obtain required Rutile type Titanium Dioxide.
2. the Rutile type Titanium Dioxide preparation method that lattice according to claim 1 is stable is characterized in that: in step b, crystal seed adds heating hydrolysis in the titanium sulfate liquid according to weight in the amount of TiO2 3-6.5%.
3. the Rutile type Titanium Dioxide preparation method that lattice according to claim 1 is stable is characterized in that: in step b, the speed that stirs in the control hydrolysis process is 50-70rpm.
Priority Applications (1)
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|---|---|---|---|
| CN 201010524501 CN101985364A (en) | 2010-10-28 | 2010-10-28 | Preparation method of rutile titanium dioxide with stable lattice |
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|---|---|---|---|
| CN 201010524501 CN101985364A (en) | 2010-10-28 | 2010-10-28 | Preparation method of rutile titanium dioxide with stable lattice |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103880070A (en) * | 2013-12-31 | 2014-06-25 | 江苏泛华化工有限公司 | Production method of titanium dioxide particles |
| CN105253913A (en) * | 2015-11-23 | 2016-01-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for controlling granularity of sulfuric acid method titanium dioxide primary product |
| CN106395893A (en) * | 2016-08-30 | 2017-02-15 | 襄阳龙蟒钛业有限公司 | Preparation method of titanium dioxide with high covering power for laminated paper |
| CN108455667A (en) * | 2018-04-25 | 2018-08-28 | 四川龙蟒钛业股份有限公司 | A kind of cooling means improving titanium dioxide quality |
| CN108946806A (en) * | 2018-09-05 | 2018-12-07 | 襄阳龙蟒钛业有限公司 | A kind of production method of high covering power titanium dioxide |
| CN109205668A (en) * | 2018-11-30 | 2019-01-15 | 攀钢集团攀枝花钢铁研究院有限公司 | Titanium hydrolysis plus seed preparation method and its online decision maker for preparing terminal |
| CN111573719A (en) * | 2020-04-10 | 2020-08-25 | 安徽迪诺环保新材料科技有限公司 | Method for preparing high-surface-ratio and high-purity rutile type titanium dioxide by sulfuric acid process |
| CN112624190A (en) * | 2020-12-15 | 2021-04-09 | 攀钢集团重庆钛业有限公司 | Method for controlling particle size of titanium dioxide by sulfuric acid process |
| CN114195185A (en) * | 2021-12-24 | 2022-03-18 | 中国科学院过程工程研究所 | Preparation method and application for producing rutile type titanium white double-effect seed crystal |
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| 《钛冶金学》 19820131 马慧娟 "硫酸法生产钛白的工艺实践" 冶金工业出版社 第134-135页 1-3 , 1 * |
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| CN112624190A (en) * | 2020-12-15 | 2021-04-09 | 攀钢集团重庆钛业有限公司 | Method for controlling particle size of titanium dioxide by sulfuric acid process |
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