Preparation process for titanium white of golden red stone type

A technology of rutile titanium dioxide and metatitanic acid, which is applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problem of low quality of rutile titanium dioxide, unstable conversion quality of calcined products, and inability to solve the problem of rutile titanium dioxide product consumption. Problems such as color strength, conversion rate and whiteness are contradictory, and achieve the effect of being suitable for post-processing, stable conversion quality and improving application performance

Inactive Publication Date: 2005-01-05
SICHUAN LOMON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned salt treatment formula cannot solve the contradictory relationship between the decolorization power, conversion rate and whiteness of the rutile titanium dioxide product in improving the application performance of the rutile titanium dioxide product, which makes the initial product rutile titanium dioxide. Low quality, resulting in unstable conversion quality of calcined products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]A method for preparing rutile-type titanium dioxide, the process steps include mineral decomposition, hydrolysis and water washing, bleaching and rinsing, salt treatment, calcining and pulverization, and post-treatment. The acid cake is made into metatitanic acid slurry with deionized water, and then a salt treatment agent composed of potassium compound, phosphorus compound and aluminum compound crystal phase control agent is added, and then the metatitanic acid after salt treatment is heated at a temperature of 800°C Calcination and conversion to obtain the primary product of rutile titanium dioxide.

[0034] The addition amount of described rutile calcined seed crystal is equivalent to TiO 2 1%.

[0035] The metatitanic acid slurry refers to TiO 2 The content is 100g / l.

[0036] The use method of the salt treatment agent composed of potassium compound, phosphorus compound and aluminum compound crystal phase control agent is to add the potassium compound, phosphorus ...

Embodiment 2

[0044] A method for preparing rutile-type titanium dioxide, the process steps include mineral decomposition, hydrolysis and water washing, bleaching and rinsing, salt treatment, calcining and pulverization, and post-treatment. The acid cake is made of metatitanic acid slurry with deionized water, and then a salt treatment agent composed of potassium compound, phosphorus compound and aluminum compound crystal phase control agent is added, and then the salt treated metatitanic acid is heated at a temperature of 1050°C Calcination and conversion to obtain the primary product of rutile titanium dioxide.

[0045] The addition amount of described rutile calcined seed crystal is equivalent to TiO 2 10% of.

[0046] The metatitanic acid slurry refers to TiO 2 The content is 500g / l.

[0047] The method of using the salt treatment agent composed of potassium compound, phosphorus compound and aluminum compound crystal phase control agent is to add the three into the metatitanic acid s...

Embodiment 3

[0055] A method for preparing rutile-type titanium dioxide, the process steps include mineral decomposition, hydrolysis and water washing, bleaching and rinsing, salt treatment, calcining and pulverization, and post-treatment. The acid cake is made into metatitanic acid slurry with deionized water, and then a salt treatment agent composed of potassium compound, phosphorus compound and aluminum compound crystal phase control agent is added, and then the salt treated metatitanic acid is heated at a temperature of 950°C Calcination and conversion to obtain the primary product of rutile titanium dioxide.

[0056] The addition amount of described rutile calcined seed crystal is equivalent to TiO 2 5%.

[0057] The metatitanic acid slurry refers to TiO 2 The content is 300g / l.

[0058] The method of using the salt treatment agent composed of potassium compound, phosphorus compound and aluminum compound crystal phase control agent is to first add the mixture of phosphorus compound...

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PUM

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Abstract

The invention discloses a method of making high-quality rutile titanium white powder by a method of improving sulphuric acid by crystal phase control, and its characteristic: after bleaching, adding rutile to burn crystal seeds, using deionized water to make metatitantic acid qualified by potching into metatitantic acid pulp, then adding in salt processing agent composed of K, P and Al compound crystal phase control preparations, burning and transforming the metatitantic acid at 800-1050 deg.C, so as to make primary product of rutile titanium white powder; it remarkably improves the quality of rutile titanium white powder, largely enhances application property of finished pigment, unitedly harmonizes the contradictory relations between decoloring force, conversion and whiteness, and makes the conversion quality of burnt products more stable, the particle size distribution more uniform, especially applied to after-processing.

Description

Technical field: [0001] The invention relates to a preparation method of rutile-type titanium dioxide, specifically a method for preparing high-quality rutile-type titanium dioxide by controlling the crystal phase and improving the sulfuric acid method. Background technique: [0002] Titanium dioxide, also known as titanium dioxide, has two crystal forms: anatase and rutile. Titanium dioxide has stable chemical properties, excellent physical properties, and is non-toxic. It is an excellent white pigment and an important chemical raw material. Titanium dioxide is widely used in coatings, plastics, inks, papermaking, rubber, ceramics, enamel, chemical fiber, food, medicine and other fields. Its production methods mainly include sulfuric acid method and chlorination method. [0003] The main raw materials for the production of titanium dioxide by the chlorination method are natural rutile ore or synthetic rutile and chlorine gas. The basic process is: chlorination→refinement o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/047C01G23/053C01G23/08
Inventor 龚家竹郝虎李家权
Owner SICHUAN LOMON CORP
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