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Production method of high-near-infrared-reflectivity titanium yellow

A technology of infrared reflection and production method, applied in chemical instruments and methods, inorganic pigment treatment, dyeing physical treatment, etc., can solve problems such as unstable product quality, achieve excellent near-infrared reflection ability, low cost and simple process

Active Publication Date: 2017-05-31
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

[0005] 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 is already a stable crystal structure, it requires a higher temperature for solid oxidation. Mixed and calcined products, resulting in unstable product quality

Method used

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  • Production method of high-near-infrared-reflectivity titanium yellow
  • Production method of high-near-infrared-reflectivity titanium yellow

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take the hydrolyzed titanium dioxide hydrate prepared by the sulfuric acid method titanium dioxide production process, the sedimentation rate is 150mm / 20min, wash the hydrated titanium dioxide with tap water at 60-65°C, and the iron content (calculated as Fe) in the wastewater of one washing is 95mg / L; The hydrated titanium dioxide obtained by washing once with water is added with tap water to make a slurry, the concentration is 325g / 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 0.5g / L, after 2 hours of treatment to account for the TiO contained in the slurry to be treated 2 In terms of the mass fraction of the amount, add orthotitanic acid sol calcined seeds (calculated as TiO2), and the addition ratio is 5%; the acid-treated hydrated titanium dioxide is washed with desalted water at 55-60 ° C, and the iron in the wastewater is washed twice. The content (calculated as Fe2O3) is 8m...

Embodiment 2

[0025] Take the hydrolyzed product hydrated titanium dioxide prepared by the sulfuric acid method titanium dioxide production process, the sedimentation rate is 197mm / 20min, wash the hydrated titanium dioxide with 55-60°C tap water, 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 372g / L, the temperature is 55-60°C, and sulfuric acid (with H 2 SO 4 Calculated) is 32g / L, trivalent titanium (as Ti 2 o 3 ) is 1.5g / L, after 1.5 hours of treatment, account for the mass fraction of TiO contained in the slurry to be treated, add orthotitanic acid sol calcined seed crystals (in TiO ), the addition ratio is 7%; ~65°C desalted water washes the acid-treated hydrated titanium dioxide with water, and the iron content in the secondary washing wastewater (measured as Fe 2 o 3 Total) is 10 mg / L; the hydrated titanium dioxide obtai...

Embodiment 3

[0027] Take the hydrolyzed titanium dioxide hydrate prepared by the sulfuric acid method titanium dioxide production process, the sedimentation rate is 175mm / 20min, 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 365g / L, the temperature is at 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 processing for 1 hour, account for the mass fraction of TiO contained in the slurry to be treated, add orthotitanic acid sol calcined seed (in TiO ), the addition ratio is 2%; with 55 ~60°C desalted water washes the acid-treated hydrated titanium dioxide with water, and the iron content in the secondary washing wastewater (measured as Fe 2 o 3 Total) is 9mg / L; the hydrated titanium dioxide ob...

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Abstract

The invention discloses a production method of high-near-infrared-reflectivity titanium yellow. The method comprises the following steps: by utilizing high reaction activity of nano titanium dioxide hydrate, adopting the appropriate nano titanium dioxide hydrate, adding a titanic acid sol, a zinc element, antimony oxide, phosphoric acid, nickel oxide and other additives, carrying out high-temperature calcination, pulverizing and removing salts to obtain the high-near-infrared-reflectivity titanium yellow. The product has the outstanding characteristics of reasonable particle size distribution, moderate color, high dispersity and high near-infrared reflectivity, and is an ideal yellow near-infrared reflection functional material product.

Description

technical field [0001] The invention relates to a method for preparing titanium yellow, in particular to a production method for preparing titanium yellow with high near-infrared reflectance by using suitable nano-scale hydrated titanium dioxide. Background technique [0002] At present, more and more attention is paid to energy-saving technology at home and abroad, and improving the direct reflection ability of solar radiation is a simple and easy technical route. From the perspective of the energy distribution of the sun, the wavelength of the solar radiant energy that can be received on the earth is mainly distributed in the range of 250-2500nm, which can be divided into three parts. The wavelength range and occupied energy of each part are respectively: The ultraviolet region less than 380nm accounts for about 3% of the total energy; the visible region of 380-780nm accounts for about 45% of the total energy; the near-infrared region greater than 780nm accounts for about ...

Claims

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Application Information

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IPC IPC(8): C09C1/36C09C3/04C09C3/06
CPCC01P2004/51C01P2006/90C09C1/3607C09C1/3623C09C1/363C09C1/3638C09C1/3653C09C3/006C09C3/041C09C3/043C09C3/045C09C3/06
Inventor 谢宏伟廖向阳王玲杨伟伟
Owner JIANGSU TOP FINE NEW RAW MATERIAL CO LTD
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