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Preparation process of titanium dioxide for plastic masterbatch

A technology of titanium dioxide and color masterbatch, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc.

Active Publication Date: 2020-05-29
GUANGXI JINMAO TITANIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The masterbatch titanium dioxide is located in the core layer of the masterbatch, so the requirements for whiteness, dispersibility, hiding power, processing torque performance, etc. are relatively high. The titanium dioxide obtained by the traditional process is often difficult to meet the above requirements, so how to improve the existing process to Obtaining titanium dioxide products with higher whiteness, better dispersion, hiding power and stronger processing torque has become an urgent technical problem to be solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] 7) Hydrolysis

[0060] The purpose of hydrolysis is to obtain metatitanic acid, and its basic process includes the formation of crystallization centers, the growth of crystal nuclei and the formation of precipitates, the aggregation and precipitation of metatitanic acid particles and the change of solution composition. Anatase seeds need to be added during hydrolysis.

[0061] The specific process of hydrolysis is as follows:

[0062] 7.1) Measure the titanium liquid prepared according to the process requirements and pour it into the hydrolysis preheating pot and the seed titanium liquid tank respectively. When the liquid level reaches the stirring paddle, start the preheating pot to stir, and measure the ammonia water with a good concentration Squeeze into the seed crystal ammonia water tank for standby;

[0063] 7.2) Wait for the seed crystal to be added after the material is finished. Start the stirring of the seed crystal production tank, open the discharge valve...

Embodiment 2

[0067] 7) Hydrolysis

[0068] The purpose of hydrolysis is to obtain metatitanic acid, and its basic process includes the formation of crystallization centers, the growth of crystal nuclei and the formation of precipitates, the aggregation and precipitation of metatitanic acid particles and the change of solution composition. Anatase seeds need to be added during hydrolysis.

[0069] The specific process of hydrolysis is as follows:

[0070] 7.1) Measure the titanium liquid prepared according to the process requirements and pour it into the hydrolysis preheating pot and the seed titanium liquid tank respectively. When the liquid level reaches the stirring paddle, start the preheating pot to stir, and measure the ammonia water with a good concentration Score into the seed crystal ammonia water tank for standby;

[0071] 7.2) Wait for the seed crystal to be added after the material is finished. Start the stirring of the seed crystal production tank, open the discharge valve o...

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Abstract

The invention discloses a preparation technology of special titanium dioxide for plastic color master batch. The preparation technology is characterized by comprising the following steps: (1) raw oregrinding; (2) acidolysis; (3) leaching; (4) reducing; (5) settling; (6) concentration of titanium liquid; (7) hydrolysis; (8) concentration of liquid titanium; (7) hydrolysis; (8) washing and bleaching; (9) salt treatment; (10) filtering, calcining and surface treatment; (11) drying and dust removal.

Description

technical field [0001] The invention belongs to the field of titanium dioxide production, and in particular relates to a preparation process of titanium dioxide specially used for producing plastic color masterbatches. Background technique [0002] Titanium dioxide scientific name titanium dioxide (TiO 2 ), there are mainly two crystal forms of rutile and anatase. Because of its superior whiteness, tinting strength, hiding power and other advantages, it has the highest refractive index among all white pigments, and is considered to be the best white pigment, so it is widely used in coatings, plastics, printing and rubber industries. As the second largest user of titanium dioxide, plastics can not only use its high hiding power, high tinting power and other pigment properties, but also improve the heat resistance, light resistance and weather resistance of plastic products. The masterbatch titanium dioxide is located in the core layer of the masterbatch, so the requirements...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/053C01G23/08
CPCC01G23/053C01G23/08C01P2002/30C01P2004/62C01P2006/12C01P2006/62C01P2006/63C01P2006/64C01P2006/80
Inventor 柴春旺
Owner GUANGXI JINMAO TITANIUM
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