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A method for producing rutile titanium dioxide for decorative laminated paper

A rutile type titanium dioxide, production method technology, applied in the direction of titanium dioxide, pigment-containing coating, titanium oxide/hydroxide, etc., can solve the problems of poor light fastness of laminated paper, etc. Effect

Active Publication Date: 2016-08-24
XIANGYANG LOMON TITANIUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The object of the present invention is to provide a kind of rutile for decorative laminated paper aiming at the shortcomings of the photochemical activity of titanium dioxide used in the field of decorative laminated paper and the poor lightfastness of the laminated paper described in the prior art. Production method of titanium dioxide

Method used

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  • A method for producing rutile titanium dioxide for decorative laminated paper
  • A method for producing rutile titanium dioxide for decorative laminated paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation method of the rutile type titanium dioxide for the decorative laminated paper of this embodiment comprises the following main steps:

[0026] (1) Weigh 6000g of deionized water and add 12g of SiO 2 Sodium silicate solution, add 4000g uncoated rutile titanium dioxide under stirring to make a concentration of about 600 gTiO 2 / L of titanium dioxide slurry, and then sanded with a sand mill to make the titanium dioxide reach the original particle size.

[0027] (2) Use deionized water to dilute the concentration of the qualified titanium dioxide slurry to 200gTiO 2 / L, and then transferred to the coating tank, and the temperature of the slurry was raised to 40°C by indirect steam heating.

[0028] (3) Add a concentration of 80g SiO to the diluted slurry 2 / L of sodium silicate solution, after adding SiO 2 with TiO 2 The mass percentage is about 2.0%; then adjust the pH value of the slurry to 6.0 with a dilute sulfuric acid solution with a mass percentag...

Embodiment 2

[0035] (1) Weigh 6000g of deionized water and add 12g of SiO 2 Sodium silicate solution, add 5000g uncoated rutile titanium dioxide under stirring to make a concentration of about 700 gTiO 2 / L of titanium dioxide slurry, and then sanded with a sand mill to make the titanium dioxide reach the original particle size.

[0036] (2) Dilute the concentration of the sand-milled titanium dioxide slurry to 300gTiO with deionized water 2 / L, and then transferred to the coating tank, and the temperature of the slurry was raised to 60°C by indirect steam heating.

[0037] (3) Add a concentration of 100g SiO to the diluted slurry 2 / L of sodium silicate solution, after adding SiO 2 with TiO 2 The mass percentage is about 3.0%; then adjust the pH value of the slurry to 7.0 with a dilute sulfuric acid solution with a mass percentage concentration of 15%; stir and mature for 1 hour.

[0038] (4) Adjust the pH value of the slurry to between 10.0 and 10.5 with dilute alkali within 20 minu...

Embodiment 3

[0044] (1) Weigh 6000g of deionized water and add 12g of SiO 2 Sodium silicate solution, add 6000g uncoated rutile titanium dioxide under stirring to make a concentration of about 800 gTiO 2 / L of titanium dioxide slurry, and then sanded with a sand mill to make the titanium dioxide reach the original particle size.

[0045] (2) Use deionized water to dilute the concentration of the qualified titanium dioxide slurry to 400gTiO 2 / L, and then transferred to the coating tank, and the temperature of the slurry was raised to 90°C by indirect steam heating.

[0046] (3) Add a concentration of 120g SiO to the diluted slurry 2 / L of sodium silicate solution, after adding SiO 2 with TiO 2 The mass percentage is about 4.0%; then adjust the pH value of the slurry to 8.0 with a dilute sulfuric acid solution with a mass percentage concentration of 15%; stir and mature for 1 hour.

[0047] (4) Adjust the pH value of the slurry to between 10.0 and 10.5 with dilute alkali within 20 minu...

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Abstract

The invention discloses a production method of rutile-type titanium dioxide for decorative laminated paper, which comprises preparing titanium dioxide primary product slurry, diluting, coating a silicon-containing compound, coating an aluminum-containing compound, aging, filtering, washing with water, Drying, calcining, crushing and other steps, which first coat a layer of silicon film on the surface of titanium dioxide and then coat a layer of aluminum film, greatly improve the weather resistance of titanium dioxide, and remove the coating by calcining and heating. The hydroxyl group on the film avoids the reaction of electron pairs and meets the high light resistance requirements of titanium dioxide in the field of decorative laminated paper, so that cheap silicon compounds can be used to replace zirconium compounds, phosphates and rare earth metals to produce high light resistance decorations Titanium dioxide for laminated paper.

Description

technical field [0001] The invention relates to the technical field of titanium dioxide production, in particular to a production method of rutile-type titanium dioxide for decorative laminated paper. Background technique [0002] Titanium dioxide, commonly known as titanium dioxide, is considered to be a white pigment with the best performance in the world. It is widely used in coatings, plastics, papermaking, printing ink, chemical fiber, rubber, cosmetics and other industries. There are three crystal forms of titanium dioxide in nature: brookite, anatase and rutile. The plate titanium type is an unstable crystal type, which has no industrial application value. Both the anatase type and the rutile type have a stable crystal lattice, and are important white pigments and porcelain glazes. Compared with other white pigments, they have superior whiteness and coloring Strength, hiding power, weather resistance, heat resistance, and chemical stability, especially non-toxic. Du...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H19/38C01G23/047
Inventor 刘不尽姚恒平杨万梅陈建
Owner XIANGYANG LOMON TITANIUM IND CO LTD
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