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High-tinting-strength pigment level titanium yellow production method

A production method and technology of tinting strength, used in inorganic pigment processing, chemical instruments and methods, fibrous fillers, etc., can solve the problems of limited application scope of titanium yellow, difficult to control product particle size, and not bright enough color, etc. Excellent dispersion, easy operation effect

Active Publication Date: 2017-05-17
JIANGSU TOP FINE NEW RAW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The more mature titanium yellow products on the market mostly use the solid-phase process, with titanium dioxide as the main raw material. Although the process is relatively simple and the cost is low, because titanium dioxide has a stable crystal structure, it requires a higher temperature for solid oxidation. Mixed and calcined products, the particle size of the product is not easy to control, the dispersion is uneven, the tinting strength is poor, and the color is not bright enough, so the application range of titanium yellow is limited to a certain extent.

Method used

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  • High-tinting-strength pigment level titanium yellow production method

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Embodiment 1

[0021] Take the hydrolyzed titanium dioxide hydrate prepared by the sulfuric acid method titanium dioxide production process, the sedimentation rate is 130mm / 30min, wash the hydrated titanium dioxide with tap water at 65-70°C, and the iron content (calculated as Fe) in the once-washed wastewater is 95mg / L; The hydrated titanium dioxide obtained by washing with water once is added with tap water to make a slurry, the concentration is 338g / L, the temperature is 60-65°C, and sulfuric acid (with H 2 SO 4 Calculated) is 49g / L, trivalent titanium (as Ti 2 o 3 Calculated) is 0.8g / L, after processing for 1 hour, account for the mass fraction of the TiO2 amount contained in the slurry to be treated, add orthotitanic acid sol calcined seed crystals (in the form of TiO 2 ), the addition ratio is 5.0%; the acid-treated hydrated titanium dioxide is washed with desalted water at 55-60°C, and the iron content in the secondary washing wastewater (measured as Fe 2 o 3 Total) is 8mg / L; the ...

Embodiment 2

[0023] Take the hydrolyzed hydrated titanium dioxide prepared by the sulfuric acid method titanium dioxide production process, the sedimentation rate is 92mm / 30min, wash the hydrated titanium dioxide with tap water at 55-60°C, and the iron content (calculated as Fe) in the once-washed wastewater is 85mg / L; The hydrated titanium dioxide obtained by washing once with water is added with tap water to make a slurry, the concentration is 260g / L, the temperature is 55-60°C, and sulfuric acid (with H 2 SO 4 Calculated) is 26g / L, trivalent titanium (as Ti 2 o 3 Calculated) is 1.5g / L, after 2 hours of treatment to account for the TiO contained in the slurry to be treated 2 In terms of mass fraction of the amount, adding orthotitanic acid sol calcined seed crystals (in the form of TiO 2 Calculated), the addition ratio is 0.0%; the acid-treated hydrated titanium dioxide is washed with desalted water at 60-65°C, and the iron content in the secondary washing wastewater (measured as Fe ...

Embodiment 3

[0025] Take the hydrolyzed titanium dioxide hydrate prepared by sulfuric acid method titanium dioxide production process, the sedimentation rate is 115mm / 30min, wash the hydrated titanium dioxide with tap water at 60-65°C, and the iron content (calculated as Fe) in the once-washed wastewater is 85mg / L; The hydrated titanium dioxide obtained by washing once with water is added with tap water to make a slurry, the concentration is 300g / L, the temperature is 65-70°C, and sulfuric acid (with H 2 SO 4 Calculated) is 38g / L, trivalent titanium (as Ti 2 o 3 Calculated) is 1.1g / L, after 1.5 hours of treatment to account for the TiO contained in the slurry to be treated 2 In terms of mass fraction of the amount, adding orthotitanic acid sol calcined seed crystals (in the form of TiO 2 Calculated), the addition ratio is 1.0%; the acid-treated hydrated titanium dioxide is washed with desalted water at 60-65°C, and the iron content in the secondary washing wastewater (measured as Fe 2 ...

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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 [0001] The invention relates to a method for preparing titanium yellow, in particular to a production method for preparing pigment-grade titanium yellow with high tinting strength by utilizing suitable nano-scale hydrated titanium dioxide. Background technique [0002] At present, more and more attention is paid to environmental protection at home and abroad, and the use of pigments containing heavy metals and toxic carcinogens has been restricted worldwide. Although organic pigments do not contain highly toxic substances, they are more expensive. Traditional pigments, whether organic or inorganic, do not have heat resistance, light resistance, weather resistance, acid and alkali resistance, and solvent resistance, and cannot fully meet the application requirements of functional coatings and plastics. Titanium yellow pigment has relatively comprehensive application performance, and is an ideal upgrade substitute for yellow-yellow pigment currently in use. ...

Claims

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Application Information

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IPC IPC(8): C09C1/36C09C3/06C09C3/08
CPCC01P2002/30C01P2004/62C09C1/3653C09C1/3669C09C3/006
Inventor 杨伟伟谢宏伟廖向阳王玲
Owner JIANGSU TOP FINE NEW RAW MATERIAL CO LTD
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