Low-cost zirconium-free white glaze suitable for sanitary ceramics and daily-use porcelain and preparation method thereof

A sanitary ceramics, low-cost technology, applied in the field of ceramics, can solve the problems of narrow melting temperature range of white glaze, yellowing of product color, easy cracking, etc., and achieve the effect of solving the narrow firing range and increasing the firing temperature range.

Active Publication Date: 2020-12-01
FOSHAN DONGPENG CERAMIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the addition ratio of zirconium-containing raw materials is directly reduced, the color of the obtained product will turn yellow. However, the zirconium-free white glaze of the prior art has problems such as narrow melting temperature range of white glaze, easy cracking, and many waste products.

Method used

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  • Low-cost zirconium-free white glaze suitable for sanitary ceramics and daily-use porcelain and preparation method thereof
  • Low-cost zirconium-free white glaze suitable for sanitary ceramics and daily-use porcelain and preparation method thereof

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preparation example Construction

[0029] Further, the present invention proposes the preparation method of the low-cost zirconium-free white glaze suitable for sanitary ceramics and household porcelain, including the following specific steps:

[0030] S1) According to the calculation in parts by weight, prepare the various raw material components of the low-cost zirconium-free white glaze suitable for sanitary ceramics and daily-use porcelain, mix them evenly and add them to a ball mill for wet ball milling;

[0031] S2) Filter the glaze slurry prepared by ball milling in step S1 with a filter sieve, and further test to confirm that the particle size of the glaze slurry reaches the set standard, that is, the white glaze slurry is obtained;

[0032] S3) Using the white glaze slurry prepared in step S2, glazing the surface of the prepared ceramic dry body, the ceramic dry body is a dry body of sanitary ceramics or porcelain for daily use;

[0033] S4) The glazed ceramic dry body is fired in a kiln to obtain the ...

Embodiment 1-10 and comparative example 1-10

[0042] A low-cost zirconium-free white glaze suitable for sanitary ceramics and daily-use porcelain. The raw material components include: quartz, feldspar, Huizhou washed clay, calcium metasilicate, medium-temperature frit, calcined talc, calcined zinc oxide, Phosphopyroxene and additive sodium carboxymethylcellulose, wherein the feldspar includes potassium feldspar and albite; calculated by mass percentage, the chemical composition of the medium-temperature frit includes: 16.5% CaO, 4% MgO, 11.5% %Al 2 o 3 , 63% SiO 2 , 3%K 2 O and 1.5% Na 2 O.

[0043] The preparation method of the above-mentioned low-cost zirconium-free white glaze suitable for sanitary ceramics and daily-use porcelain comprises the following specific steps:

[0044] S1) According to the calculation in parts by weight, prepare the various raw material components of the low-cost zirconium-free white glaze suitable for sanitary ceramics and daily-use porcelain, mix them evenly and add them to a ball mill...

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Abstract

The invention discloses a low-cost zirconium-free white glaze suitable for sanitary ceramics and daily ceramics. The low-cost zirconium-free white glaze is prepared from the following raw material components in parts by weight: 20 to 30 parts of quartz, 28 to 38 parts of feldspar, 5 to 10 parts of Huizhou washed white clay, 10 to 20 parts of calcium metasilicate, 5 to 12 parts of medium-temperature frit, 2 to 8 parts of calcined talc, 3 to 11 parts of calcined zinc oxide, 3 to 8 parts of apatite and 0.2 to 0.5 part of an additive sodium carboxymethyl cellulose. According to the invention, theapatite and high-calcium raw materials (calcium metasilicate and medium-temperature frit) contained in the low-cost zirconium-free white glaze can enable the glaze to generate phase splitting when theglaze is molten, and when the glaze is molten, the melt containing potassium and sodium and the melt containing calcium and magnesium are subjected to phase splitting to generate the multi-liquid-phase melt, so that the whitening effect is achieved; and the firing range of the glaze is widened through the zinc oxide and the medium-temperature frit, so that the defect that the firing range is narrow due to the high magnesium content in the glaze is overcome.

Description

technical field [0001] The invention relates to the technical field of ceramics, in particular to a low-cost zirconium-free white glaze suitable for sanitary ceramics and daily-use porcelain and a preparation method thereof. Background technique [0002] At present, most of the white glazes used in sanitary ceramics and daily-use porcelain are added with zirconium-containing raw materials, such as zirconium silicate. As the resources of zirconium silicate become less and less, the price of zirconium-containing raw materials is getting higher and higher, which greatly increases the production cost of sanitary ceramics and white glazes for daily-use porcelain, and zirconium-containing raw materials are radioactive. If the addition ratio of zirconium-containing raw materials is directly reduced, the color of the obtained product will turn yellow. However, the zirconium-free white glaze in the prior art has problems such as narrow melting temperature range of the white glaze, ea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C8/14C03C8/02C04B41/86
CPCC03C8/02C03C8/14C04B41/5022C04B41/86C04B41/4539C04B41/0072
Inventor 伍军玲潘欢欢钟保民徐瑜
Owner FOSHAN DONGPENG CERAMIC
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