Emulsion whitening agent for ceramic and preparation method thereof

A whitening agent and opacification technology, applied in the field of ceramic products, can solve the problems of very high firing process requirements and application restrictions, and achieve the effects of reducing radioactive pollution, saving resources, and reducing costs

Inactive Publication Date: 2014-06-25
JIANGSU MIRAFUL NANO MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, research and development of products to replace zirconium silicate mainly focus on phosphorus-zirconium system, phosphorus-zirconium-boron composite system, zirconium silicate nano-system and titanium white glaze system. When these systems are used, the ceramic firing process is very high, so App is restricted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Raw materials are wet-mixed with 60 parts of zirconium silicate and 40 parts of dopant mixture in parts by weight, ground to 325 mesh, and dried;

[0018] Wherein, the dopant mixture is formed by wet mixing activated alumina, activated silicon micropowder, and sodium carbonate at a ratio of parts by weight = 50:49.5:0.5.

[0019] After drying, the raw materials are added to the kiln and calcined with a slight pressure of 0~0.2Mpa, the firing temperature is 1200 ° C, and the temperature is kept for 4 hours;

[0020] After cooling, wet grind D90 to less than 10 microns, dry and pack.

[0021] The opacifying whitening agent for ceramics made in this embodiment is used in the blank and glaze of ceramics, and the addition amount is the same as that of the comparative example, and the whiteness test result of the prepared ceramic product is:

[0022] When 10% of the same is added to the glaze, the whiteness of the glaze with the addition of opacifying whitening agent for cer...

Embodiment 2

[0027] The raw materials are 98 parts of zirconium silicate and 2 parts of dopant mixture wet-mixed in parts by weight, ground to 325 mesh, and dried;

[0028] Wherein, the dopant mixture is formed by wet mixing activated alumina and sodium carbonate according to the ratio of parts by weight=99.5:0.5.

[0029] After drying, the raw materials are added to the kiln and calcined with a slight pressure of 0~0.2Mpa, the firing temperature is 1200 ° C, and the temperature is kept for 4 hours;

[0030] After cooling, wet grind D90 to less than 10 microns, dry and pack.

[0031] The opacifying whitening agent for ceramics made in this embodiment is used in the blank and glaze of ceramics, and the addition amount is the same as that of the comparative example, and the whiteness test result of the prepared ceramic product is:

[0032] When 10% of the same is added to the glaze, the whiteness of the glaze with the addition of opacifying whitening agent for ceramics is 91.8, and the whit...

Embodiment 3

[0037] Raw materials are wet-mixed with 60 parts of zirconium silicate and 40 parts of dopant mixture in parts by weight, ground to 325 mesh, and dried;

[0038] Wherein, the dopant mixture is formed by wet mixing aluminum hydroxide hydrate, metasilicate, and sodium carbonate at a ratio of parts by weight = 50:49.5:0.5.

[0039] After drying, the raw materials are added to the kiln and calcined with a slight pressure of 0~0.2Mpa, the firing temperature is 1200 ° C, and the temperature is kept for 4 hours;

[0040] After cooling, wet grind D90 to less than 10 microns, dry and pack.

[0041] The opacifying whitening agent for ceramics made in this embodiment is used in the blank and glaze of ceramics, and the addition amount is the same as that of the comparative example, and the whiteness test result of the prepared ceramic product is:

[0042] When 10% of the same is added to the glaze, the whiteness of the glaze with the addition of opacifying whitening agent for ceramics is...

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Abstract

The invention relates to the field of a ceramic product, and particularly relates to an emulsion whitening agent for ceramic and a preparation method thereof. The emulsion whitening agent for the ceramic consists of the following raw materials in parts by weight: 60-98 parts of zirconium silicate and 2-40 parts of a dopant mixture. The preparation method comprises the steps of wet-mixing active aluminum oxide or / and aluminum hydroxide hydrate as well as active silica powder or / and metasilicic acid and sodium carbonate according to the parts in weight so as to form the dopant mixture; wet-mixing zirconium silicate and the dopant mixture according to the parts in weight, grinding to 325 meshes, drying and then adding into a kiln, roasting under a micro-pressure of 0-0.2 Mpa, cooling and then wet-grinding, drying and packaging. The emulsion whitening agent for the ceramic provided by the invention is used for replacing the existing generally-used zirconium silicate so as to lower the cost of a ceramic enterprise, save limited zircon sand resources and reduce radioactive pollution of the ceramic.

Description

technical field [0001] The invention relates to the field of ceramic products, in particular to an opacifying whitening agent for ceramics and a preparation method thereof. Background technique [0002] Zirconium silicate, as a high-quality and cheap whitening agent and opacifying agent in the ceramic industry, is widely used at home and abroad. Due to the limited storage of zircon sand, the raw material of zirconium silicate, the price keeps rising, which leads to the increase in the cost of ceramic enterprises. At the same time, zirconium silicate contains certain radionuclides radium, thorium, uranium and potassium-40, which increases the radioactivity of ceramic products. At present, research and development of products to replace zirconium silicate mainly focus on phosphorus-zirconium system, phosphorus-zirconium-boron composite system, zirconium silicate nano-system and titanium white glaze system. When these systems are used, the ceramic firing process is very high, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/86C04B35/622
Inventor 郝小勇王美兰崔栋
Owner JIANGSU MIRAFUL NANO MATERIAL CO LTD
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