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Method for producing rutile titanium white powder applied to decorative laminated paper

A technology of rutile titanium dioxide and its production method, which is applied in the direction of titanium dioxide, pigmented coating, titanium oxide/hydroxide, etc., can solve the problems of poor light fastness of laminated paper, improve weather resistance and avoid reactions Effect

Active Publication Date: 2014-12-03
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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  • Method for producing rutile titanium white powder applied to decorative laminated paper
  • Method for producing rutile titanium white powder applied to decorative laminated paper

Examples

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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 method for producing rutile titanium white powder applied to decorative laminated paper. The method for producing the rutile titanium white powder applied to the decorative laminated paper comprises the following steps: preparing titanium white powder primary pulp, diluting, coating silicon-containing compounds, coating aluminum-containing compounds, curing, filtering, rinsing, drying, calcining, crushing and the like. According to the method for producing the rutile titanium white powder applied to the decorative laminated paper, the surface of the titanium white powder is firstly coated with a silicon film and subsequently coated with an aluminum film, so that the weather resistance of the titanium white powder is greatly improved; meanwhile, hydroxyl groups on the coated films are removed by using a manner of calcining and heating; the reaction of electron pairs is avoided; the requirement of high light resistance on the titanium white powder in the field of the decorative laminated paper can be met, so that the low-cost silicon compounds can be used for replacing zirconium compounds, phosphate, rare earth metals and the like for producing the titanium white powder with high light resistance applied to the decorative 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 Applications(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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