CN106675112A - High-tinting-strength pigment level titanium yellow production method - Google Patents
High-tinting-strength pigment level titanium yellow production method Download PDFInfo
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- 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
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- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
- C09C1/3607—Titanium dioxide
- C09C1/3669—Treatment with low-molecular organic compounds
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- 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
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Abstract
The invention discloses a high-tinting-strength pigment level titanium yellow production method. According to the method, high reaction activity of nanoscale hydrous titanium dioxide is utilized, and appropriate nanoscale hydrous titanium dioxide is selected. A product of pigment level titanium yellow can be obtained by using the hydrous titanium dioxide as base and adding additives of photodegradation sol, zinc element, antimony oxide, aluminum salt, phosphoric acid, nickel oxide and the like and through the steps of high-temperature calcinating, smashing and desalting. The product has the obvious characteristics of small particle diameter, concentrated distribution, bright color, easiness in scattering and strong tinting strength and can serve as an ideal upgraded substitute product of a current commercial-use yellow pigment.
Description
Technical field
The present invention relates to the preparation method of titan yellow, prepares high coloring more particularly, to suitable nanoscale hydrated titanium dioxide is utilized
The production method of power pigment-level titan yellow.
Background technology
Both at home and abroad environmental protection is paid attention to increasingly at present, containing heavy metal and poisonous carcinogenic pigment, in the whole world, restriction makes
With.Although and organic pigment does not contain extremely toxic substance, expensive.Traditional pigment, whether organic pigment or inorganic face
Material, does not have the performances such as heat-resisting, fast light, weather-proof, acid and alkali-resistance and solvent resistant concurrently, it is impossible to completely adaptive functions coating and plastics should
With requiring.And titanium yellow pigment then has more comprehensive application performance, it is the current preferable upgrading succedaneum with yellow yellow uitramarine.
The excellent properties that titanium yellow pigment has：1., due to being got by pyroreaction and calcining, crystal formation and lattice structure are steady
Fixed, heat-resisting, fast light, weather-proof and resistance to various chemical mediator performances are very excellent, and resistance to chalking can exceed that any Huang yellow face
Material.2. as with very high hardness and higher proportion, titanium yellow pigment can be presented very in the case of it can provide high covering power again
High wearability.3. titanium yellow pigment has neutral pH value, it is adaptable to various medium systems, will not react with medium system.
4. titanium yellow pigment easily disperses, and with anti-migrating property, bleeding phenomenon does not occur.Although 5. titanium yellow pigment contains color development element, this
A little elements enter TiO2Lattice, is not completely suitable for the security system of innoxious requirement by any medium etch under generic condition,
Such as child plastic toy and all coating, packaging material for food, medical supplies, cosmetics, sanitary ware etc..
Solid phase method technique being adopted on market more ripe titan yellow product, with titanium dioxide as primary raw material, although technique more
Relatively simple, cost is relatively low, but as titanium dioxide has been stable crystal structure, needs higher temperature to carry out solid oxidation
Thing mixed calcining, causes product cut size wayward, disperses uneven, and tinting strength, tinting power is poor, and color and luster is not vivid enough, therefore titan yellow
Range of application is subject to a definite limitation.The production of titan yellow, thing are carried out for primary raw material using nanoscale high activity hydrated titanium dioxide
The other mixing of molecular level is realized between material, is that a kind of simple and easy to do and product quality stablizes controllable production method.
The content of the invention
The purpose of the present invention, is to provide for a kind of production method of titanium yellow pigment, and the technical problem that the method is solved is
Using nanoscale hydrated titanium dioxide high reaction activity the characteristics of, by preferred nanoscale high activity hydrated titanium dioxide, right
Hydrated titanium dioxide is once washed, acid treatment, secondary washing, plus inorganic agent mixing, calcining, once crush, grinding desalination,
The key steps such as dry, steam flow crushing, to reach the purpose of output high-quality titan yellow.
The production method that the present invention is provided comprises the steps：
A, hydrated titanium dioxide are once washed：Choose hydrolyzate hydration titanium dioxide prepared by sulfate process titanium dioxide production technology
Titanium, sedimentation rate index meet 90~130mm/30min, hydrated titanium dioxide are washed with 55~70 DEG C of tap waters, washing
Qualified Judging index is iron content (in terms of Fe) in a washing waste water less than 100mg/L；
B, acid treatment：Gained hydrated titanium dioxide will once be washed adds tap water to make slurry, and concentration is controlled to 260~
340g/L, temperature add sulphuric acid (with H at 55~70 DEG C2SO4Meter) for 25~50g/L, titanous is (with Ti2O3Meter) for 0.5~
1.5g/L, processes slurry 1~2 hour with this understanding；After process terminates, calcining seeds, the matter of TiO2 in calcining seeds are added
Measure to account for contained TiO in pending slurry2The 0.0~5.0% of quality, stirs 30 minutes；
The calcining seeds are titanic acid-sol calcining seeds, and the titanic acid-sol calcining seeds are that sulfate process titanium dioxide is given birth to
Rutile type calcining seeds prepared by production. art.
The secondary washing of c, hydrated titanium dioxide：With 55~70 DEG C of desalted waters hydrated titanium dioxide good to the acid treatment of step b
Slurry is washed, and it is iron content in secondary washing waste water (with Fe to wash qualified Judging index2O3Meter) control be less than
10mg/L；
D, plus inorganic agent：Add desalted water to adjust titanium dioxide concentration hydrated titanium dioxide obtained by secondary washing to be controlled to
260~340g/L；Slurry pH value is adjusted to 2.5~4.0 with alkali；To account for contained TiO in pending slurry2The mass fraction of amount
Meter, with Sb2O3Meter, the adding proportion of the stibium oxide of addition is 10~15%；In terms of NiO, the adding proportion of nickel oxide is 8~
15%；With H3PO4Meter, the adding proportion of phosphoric acid is 0.00~0.25%；With Al2O3The adding proportion of meter, aluminum sulfate or aluminum chloride
For 0.00~0.3%；In terms of ZnO, the adding proportion of Zinc Oxide or zinc sulfate or zinc chloride is 0.0~0.5%；In terms of MgO, oxygen
It is 0.0~0.5% to change magnesium or magnesium sulfate or magnesium chloride adding proportion；Slurry is stirred 0.5~1 hour after adding mentioned reagent, will
It is standby that slurry press dry moisture；
E, calcining：The material for pressing dry moisture is calcined, the control of highest calcining heat is forged between 900~1200 DEG C
Rutile-type crystal formation content >=98.5% in burning product；
F, crushing：Calcining product are crushed with pulverizer, 45 μm of residue on sieves of control smashing fineness are less than 0.05%, obtain final product
Titan yellow primary product；
G, desalination, sand milling：Titan yellow primary product are made into slurry with desalted water, slurry is ground with sand mill, selected
With 0.6~0.8 μm of Zirconium orthosilicate. pearl or yttrium stabilised zirconia pearl, the slurry after grinding is washed with desalted water, control washing is useless
Water conductivity is less than 80 μm/cm, slurry is pressed dry moisture content standby；
H, drying, steam flow are crushed：The drying materials for pressing dry moisture content are removed into moisture content, trimethylolethane, three hydroxyl first are added
Base propane, polydimethylsiloxanepolymer polymer one kind therein, addition are 0.1~0.8%, the Jing vapour for accounting for comminuting matter quality
Stream crushes to obtain titan yellow product.
Beneficial effects of the present invention：
(1) products obtained therefrom of the present invention is rutile-type crystal structure, and with preferable particle diameter distribution, particle diameter D50 is between 250
Between~400nm, product has excellent dispersibility, higher tinting strength, tinting power.The method is hydrated by preferred nanoscale high activity
Titanium dioxide simultaneously adds color development element, auxiliary agent after carrying out remove impurity to which so that the size tunable of titan yellow product is grown up；It is logical
Cross carries out desalination, grinding, and adds different surfactants to titan yellow primary product, product can be caused to have widely suitable
The property used.
(2) present invention process is simple, easy to operate, with low cost.
Specific embodiment
With reference to specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to
This.
Embodiment 1
The hydrolyzate hydrated titanium dioxide of sulfate process titanium dioxide production technology preparation is taken, sedimentation rate is 130mm/30min, with
65~70 DEG C of tap waters are washed to hydrated titanium dioxide, iron content (in terms of the Fe) 95mg/L in a washing waste water；Will
Once washing gained hydrated titanium dioxide adds tap water to make slurry, and concentration is 338g/L, and temperature adds sulphuric acid at 60~65 DEG C
(with H2SO4Meter) for 49g/L, titanous is (with Ti2O3Meter) for 0.8g/L, it is contained in pending slurry to account for after processing 1 hour
The mass fraction meter of TiO2 amounts, adds titanic acid-sol calcining seeds (with TiO2Meter), adding proportion is 5.0%；With 55~60
DEG C desalted water hydrated titanium dioxide good to acid treatment is washed, and the iron content in secondary washing waste water is (with Fe2O3Meter) be
8mg/L；Desalted water is added to make slurry hydrated titanium dioxide obtained by secondary washing, concentration is 335g/L；Adjusted with potassium hydroxide
Slurry pH value is to 2.5~4.0；To account in pending slurry in terms of the mass fraction of contained TiO2 amounts, the stibium oxide of addition is (with Sb2O3
Meter) adding proportion be 10%；Nickel oxide (being counted with NiO) adding proportion is as 8%；Phosphoric acid is (with H3PO4Meter) adding proportion is
0.00%；Aluminum sulfate or aluminum chloride are (with Al2O3Meter) adding proportion be 0.1%；Stir 0.5~1 hour after adding mentioned reagent,
Slurry is pressed dry moisture content to be calcined, highest calcining heat is controlled at 1200 DEG C, and in calcining product, rutile-type crystal formation content is
99.5%；Calcining product are crushed with mechanical crusher, smashing fineness 0.02% obtains final product titan yellow primary product；By at the beginning of titan yellow
Level product makes slurry with desalted water, slurry is ground with sand mill, from 0.6~0.8 μm of Zirconium orthosilicate. pearl, uses desalination
Water is washed to the slurry after grinding, 80 μm/cm of washing waste water electrical conductivity, and slurry is pressed dry moisture；The thing of moisture will be pressed dry
Moisture removal is removed in material drying, adds trimethylolethane, and addition is that 0.1%, the Jing steam flows for accounting for comminuting matter quality crush to obtain titanium
Yellow product.
Embodiment 2
The hydrolyzate hydrated titanium dioxide of sulfate process titanium dioxide production technology preparation is taken, sedimentation rate is 92mm/30min, with
55~60 DEG C of tap waters are washed to hydrated titanium dioxide, iron content (in terms of the Fe) 85mg/L in a washing waste water；Will
Once washing gained hydrated titanium dioxide adds tap water to make slurry, and concentration is 260g/L, and temperature adds sulphuric acid at 55~60 DEG C
(with H2SO4Meter) for 26g/L, titanous is (with Ti2O3Meter) for 1.5g/L, it is contained in pending slurry to account for after processing 2 hours
TiO2The mass fraction meter of amount, adds titanic acid-sol calcining seeds (with TiO2Meter), adding proportion is 0.0%；With 60~65 DEG C
The desalted water hydrated titanium dioxide good to acid treatment is washed, and the iron content in secondary washing waste water is (with Fe2O3Meter) be
10mg/L；Desalted water is added to make slurry hydrated titanium dioxide obtained by secondary washing, concentration is 265g/L；Starched with potassium carbonate adjustment
Expect pH value to 2.5~4.0；To account for contained TiO in pending slurry2The mass fraction meter of amount, the stibium oxide of addition is (with Sb2O3
Meter) adding proportion be 15%；Nickel oxide (being counted with NiO) adding proportion is as 15%；Phosphoric acid is (with H3PO4Meter) adding proportion is
0.25%；Zinc Oxide or zinc sulfate or zinc chloride (being counted with ZnO) adding proportion are as 0.5%；Add after mentioned reagent stirring 0.5~
1 hour, slurry is pressed dry into moisture content and is calcined, highest calcining heat is controlled at 900 DEG C, rutile-type crystal formation content in calcining product
For 98.5%；Calcining product are crushed with mechanical crusher, smashing fineness 0.01% obtains final product titan yellow primary product；By titan yellow
Primary product make slurry with desalted water, slurry are ground with sand mill, from 0.6~0.8 μm of yttrium stabilised zirconia pearl, use
Desalted water is washed to the slurry after grinding, 75 μm/cm of washing waste water electrical conductivity, and slurry is pressed dry moisture；Moisture content will be pressed dry
Drying materials remove moisture removal, add trimethylolpropane, addition is that 0.3%, the Jing steam flows for accounting for comminuting matter quality are crushed
Obtain titan yellow product.
Embodiment 3
The hydrolyzate hydrated titanium dioxide of sulfate process titanium dioxide production technology preparation is taken, sedimentation rate is 115mm/30min, with
60~65 DEG C of tap waters are washed to hydrated titanium dioxide, iron content (in terms of the Fe) 85mg/L in a washing waste water；Will
Once washing gained hydrated titanium dioxide adds tap water to make slurry, and concentration is 300g/L, and temperature adds sulphuric acid at 65~70 DEG C
(with H2SO4Meter) for 38g/L, titanous is (with Ti2O3Meter) for 1.1g/L, it is contained in pending slurry to account for after processing 1.5 hours
TiO2The mass fraction meter of amount, adds titanic acid-sol calcining seeds (with TiO2Meter), adding proportion is 1.0%；With 60~65 DEG C
The desalted water hydrated titanium dioxide good to acid treatment is washed, and the iron content in secondary washing waste water is (with Fe2O3Meter) for 9mg/
L；Desalted water is added to make slurry hydrated titanium dioxide obtained by secondary washing, concentration is controlled to 285g/L；Adjusted with sodium hydroxide
Slurry pH value is to 2.5~4.0；To account for contained TiO in pending slurry2The mass fraction meter of amount, the stibium oxide of addition is (with Sb2O3
Meter) adding proportion be 12%；Nickel oxide (being counted with NiO) adding proportion is as 12%；Phosphoric acid is (with H3PO4Meter) adding proportion is
0.05%；Aluminum sulfate or aluminum chloride are (with Al2O3Meter) adding proportion be 0.2%；Zinc Oxide or zinc sulfate or zinc chloride are (with ZnO
Meter) adding proportion be 0.2%；Magnesium oxide or magnesium sulfate or magnesium chloride adding proportion are 0.5%；Stir after adding mentioned reagent
0.5~1 hour, slurry is pressed dry into moisture content and is calcined, highest calcining heat is controlled at 1000 DEG C, rutile-type is brilliant in calcining product
Type content >=99.0%；Calcining product are crushed with mechanical crusher, smashing fineness 0.03%, obtained final product the primary product of titanium chrome yellow
Product；Titan yellow primary product are made into slurry with desalted water, slurry is ground with sand mill, from 0.6~0.8 μm of silicic acid
Zirconium pearl, is washed to the slurry after grinding with desalted water, 80 μm/cm of washing waste water electrical conductivity, and slurry is pressed dry moisture；Will pressure
The drying materials of solid carbon dioxide point remove moisture removal, add polydimethylsiloxanepolymer polymer, and addition is to account for comminuting matter quality
0.8%, Jing steam flow crushes to obtain titan yellow product.
The titan yellow product of embodiment is detected, R% therein is XRD testing results, and particle diameter is that laser particle analyzer is examined
Result is surveyed, the examination criteria of tinting strength, tinting power is GB/T13451.2-92《Coloring pigment relative color strength and the relative scattering of Chinese white
The measure photometer measuring method of power》, gained detection data listed in table 1 later：
Table 1：Embodiment Product checking data
Claims (9)
1. a kind of production method of high coloring power pigment-level titan yellow, it is characterised in that comprise the following steps：
A, hydrated titanium dioxide are once washed：Take the qualified hydrolyzate hydration titanium dioxide of sulfate process titanium dioxide production technology preparation
Titanium, is washed to hydrated titanium dioxide with 50~60 DEG C of tap waters, washes qualified Judging index in a washing waste water
Iron content (in terms of Fe) less than 100mg/L；
B, acid treatment：Gained hydrated titanium dioxide will once be washed adds tap water to make slurry, and titanium dioxide concentration is controlled to 260
~340g/L, temperature at 55~70 DEG C, with H2SO4Meter, addition sulphuric acid are 25~50g/L, with Ti2O3Meter, titanous be 0.5~
1.5g/L, processes slurry 1~2 hour with this understanding；After process terminates, calcining seeds, TiO in calcining seeds are added2Matter
Amount accounts for contained TiO in pending slurry2The 0.0~5.0% of quality, stirs 30 minutes after adding；
The secondary washing of c, hydrated titanium dioxide：With 55~70 DEG C of desalted waters hydrated titanium dioxide slurry good to the acid treatment of step b
Washed, it is that iron content (in terms of Fe2O3) control in secondary washing waste water is being less than 10mg/ to wash qualified Judging index
L；
D, plus inorganic agent：Add desalted water to adjust titanium dioxide concentration in hydrated titanium dioxide slurry obtained by secondary washing to be controlled to
260~340g/L；Slurry pH value is adjusted to 2.5~4.0 with alkali；To account for contained TiO in pending slurry2The mass fraction of amount
Meter, with Sb2O3Meter, the adding proportion of stibium oxide is 10~15%；In terms of NiO, the adding proportion of nickel oxide is 8~15%；With
H3PO4Meter, the adding proportion of phosphoric acid is 0.00~0.25%；With Al2O3Meter, the adding proportion of silicon source is 0.00~0.3%, with
ZnO is counted, and the adding proportion in zinc source is 0.0~0.5%；In terms of MgO, the adding proportion in magnesium source is 0.0~0.5%；Add above-mentioned
Stir 0.5~1 hour after reagent, slurry is pressed dry into moisture standby；
E, calcining：The material for pressing dry moisture is calcined, the control of highest calcining heat calcines product between 900~1200 DEG C
Middle rutile-type crystal formation content >=98.5%；
F, crushing：Calcining product are crushed with pulverizer, control smashing fineness is qualified, obtains final product titan yellow primary product；
G, desalination, sand milling：Titan yellow primary product are made into slurry with desalted water, slurry is ground with sand mill, select 0.6
~0.8 μm of Zirconium orthosilicate. pearl or yttrium stabilised zirconia pearl, are washed to the slurry after grinding with desalted water, control washing waste water conductance
Rate is less than 80 μm/cm, slurry is pressed dry moisture content standby；
H, drying, steam flow are crushed：The drying materials for pressing dry moisture are removed into moisture removal, adds surface conditioning agent, Jing steam flows to crush
Titan yellow product.
2. a kind of production method of the high coloring power pigment-level titan yellow according to claims 1, it is characterised in that step a
In, qualified hydrolyzate hydrated titanium dioxide prepared by the sulfate process titanium dioxide production technology refers to hydrolyzate sedimentation rate index
Meet the hydrolysis material of 90~130mm/30min；The measuring method of hydrolyzate sedimentation rate index is：100ml is taken more than 90 DEG C
Hydrolyzate and 900ml temperature be sufficiently mixed for 20 ± 2 DEG C of desalted water after, be placed in 1000ml graduated cylinders, in 22 ± 2 DEG C
Standing sedimentation 30min under environment, the supernatant measured highly are the hydrolyzate sedimentation rate.
3. a kind of production method of the high coloring power pigment-level titan yellow according to claims 1, it is characterised in that step b
In, the calcining seeds are titanic acid-sol calcining seeds, and the titanic acid-sol calcining seeds are that sulfate process titanium dioxide produces work
Rutile type calcining seeds prepared by skill.
4. a kind of production method of the high coloring power pigment-level titan yellow according to claims 1 or 2, it is characterised in that institute
The desalted water stated meets electrical conductivity less than 10 μ s/cm, and clear appearance is transparent.
5. the production method of a kind of high coloring power pigment-level titan yellow according to claim 1, it is characterised in that in step d,
The alkali be potassium hydroxide, potassium carbonate, sodium hydroxide, sodium carbonate, ammonia it is therein one or more；The stibium oxide refers to content
(with Sb2O3Meter) >=99.0%, the industrial goods stibium oxide of residue on sieve (mass fraction, 45 μm)≤0.05%；The nickel oxide refers to and contains
Amount (in terms of Ni) >=74%, the industrial goods nickel oxide of residue on sieve (mass fraction, 45 μm)≤0.01%.
6. the production method of a kind of high coloring power pigment-level titan yellow according to claim 1, it is characterised in that in step d,
Source of aluminium is aluminum sulfate or aluminum chloride；Zinc source is Zinc Oxide, zinc sulfate or zinc chloride；Magnesium source is magnesium oxide, magnesium sulfate or chlorine
Change magnesium.
7. the production method of a kind of high coloring power pigment-level titan yellow according to claim 1, it is characterised in that in step f,
The smashing fineness is qualified, obtains final product titan yellow primary product and refers to that 45 μm of residue on sieves detect grain less than 0.05%, Jing laser particle analyzers
Footpath D50 between 250~400nm, rutile-type crystal formation content >=98.5%.
8. the production method of a kind of high coloring power pigment-level titan yellow according to claim 1, it is characterised in that in step h,
The surface conditioning agent is trimethylolethane, trimethylolpropane, polydimethylsiloxanepolymer polymer one kind therein, is added
Measure to account for the 0.1~0.8% of comminuting matter quality.
9. the production method of a kind of high coloring power pigment-level titan yellow according to claim 1, it is characterised in that in step h,
The titan yellow product refer to 45 μm of residue on sieves less than 0.02%, Jing laser particle analyzers detection particle diameter D50 between 250~350nm it
Between, water dissolvable salt content is less than 0.1%, rutile-type crystal formation content >=98.5%.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107652713A (en) * | 2017-10-20 | 2018-02-02 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of method for preparing titanium yellow pigment |
| CN108165052A (en) * | 2017-12-14 | 2018-06-15 | 华南理工大学 | A kind of ceramic pigment with near-infrared reflection and preparation method thereof |
| 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 |
| CN110734651A (en) * | 2019-10-23 | 2020-01-31 | 广东丰霖新材料科技有限公司 | brownish red pigment, and preparation method and application thereof |
| CN112011195A (en) * | 2020-08-29 | 2020-12-01 | 南京汇彩纳米新材料有限公司 | High-performance ferrotitanium yellow inorganic pigment and preparation method thereof |
| CN113125297A (en) * | 2020-01-10 | 2021-07-16 | 立邦涂料（中国）有限公司 | Method for detecting dispersibility of titanium dioxide in water |
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| CN107652713A (en) * | 2017-10-20 | 2018-02-02 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of method for preparing titanium yellow pigment |
| CN108165052A (en) * | 2017-12-14 | 2018-06-15 | 华南理工大学 | A kind of ceramic pigment with near-infrared reflection and preparation method thereof |
| CN108165052B (en) * | 2017-12-14 | 2020-11-24 | 华南理工大学 | Ceramic pigment with near-infrared reflection function and preparation method thereof |
| 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 |
| CN110734651A (en) * | 2019-10-23 | 2020-01-31 | 广东丰霖新材料科技有限公司 | brownish red pigment, and preparation method and application thereof |
| CN113125297A (en) * | 2020-01-10 | 2021-07-16 | 立邦涂料（中国）有限公司 | Method for detecting dispersibility of titanium dioxide in water |
| CN112011195A (en) * | 2020-08-29 | 2020-12-01 | 南京汇彩纳米新材料有限公司 | High-performance ferrotitanium yellow inorganic pigment and preparation method thereof |
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