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Low temperature high silicon stoneware and its making process

A technology of stoneware and high silicon, applied in the field of stoneware in ceramics, can solve problems such as glaze cracks, cracks, and deficiencies, and achieve the effects of small firing shrinkage, low production cost, and increased expansion coefficient and strength.

Inactive Publication Date: 2007-11-07
HUNAN HUALIAN YIBAILI CERAMIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the lack of bonding of the above-mentioned blank glaze, provide a high expansion coefficient blank, and solve the problem that the special glaze is prone to glaze cracking or later cracking.

Method used

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  • Low temperature high silicon stoneware and its making process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of high-silicon stoneware, the main representative mineral composition is feldspar, kaolin, quartz and dolomite, and the proportion of each composition is as follows:

[0028] Albite 15%, Kaolin 35%, Quartz 45%, Dolomite 5%

[0029] The firing process of the high-silicon stoneware is the same as that of ordinary stoneware, the firing temperature range is 1175-1225°C, and the water absorption rate is controlled between 1-4%.

Embodiment 2

[0031] A kind of high-silicon stoneware, the main representative mineral composition is feldspar, kaolin, quartz and dolomite, and the proportion of each composition is as follows:

[0032] Albite 30%, Kaolin 29%, Quartz 40%, Dolomite 1%

[0033] The firing process of the high-silicon stoneware is the same as that of ordinary stoneware, the firing temperature range is 1175-1225°C, and the water absorption rate is controlled between 1-4%.

[0034] The ideal chemical composition obtained by the proportioning of above-mentioned embodiment is:

[0035] SiO2: 72-79% Al2O3: 14.5-18% Fe2O3: 0.5-1.5%

[0036] TiO2: 0.1~1.5% CaO+MgO: 0.3~2.5% K2O: 0.2~1%

[0037] Na2O: 1.5-3.5% I.L: 4.0-6.5% The rest are impurities.

Embodiment 3

[0039] Ideal formula of the present invention is as follows:

[0040] Albite 25% Kaolin 32% Coarse Quartz 31.5%

[0041] Superfine Quartz 10% Dolomite 1.5%

[0042] The chemical composition of green body is:

[0043] SiO2: 74.25% Fe2O3: 0.73% Al2O3: 16.08%

[0044] TiO2: 0.15% CaO: 0.61% MgO: 0.31%

[0045] K2O: 0.62% Na2O: 2.68% I.L: 4.5

[0046] The expansion coefficient is 8.26×10-6.

[0047] The firing process of the high-silicon stoneware is the same as that of ordinary stoneware, the firing temperature range is 1175-1225°C, and the water absorption rate is controlled between 1-4%.

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Abstract

The present invention is low temperature high silicon stone ware and its making process. The low temperature high silicon stone ware has great amount of quartz in different granularities introduced to increase the expansion coefficient of the biscuit. It is prepared with the materials including albite 15-35 wt%, kaolin 25-40 wt%, quartz 35-50 wt% and dolomite 1-5 wt%, and through a common stone ware baking process. The low temperature high silicon stone ware features the firing range of 1,175-1,225 deg.c and water absorption of 1-4 %.

Description

Technical field: [0001] The invention relates to a ceramic product characterized by composition and its manufacturing process. It is a new material of low-temperature, high-silicon and high-expansion coefficient stoneware, which belongs to the category of stoneware in ceramics, and is specially used for special artistic glazes with high expansion coefficient. porcelain. technical background: [0002] There are many glazes with better artistic effects in daily-use stoneware. For example: bright glaze with strong fluidity during firing, and some crystalline glazes with phase separation effect, the expansion coefficient of glaze is generally high, and the expansion coefficient of many glazes is above 8×10-6, while our traditional high-silicon The coefficient of expansion of stoneware is generally between 6.5 and 7.5×10-6. If such body is glazed with these arts, it is easy to cause glaze cracking after firing, or later cracking phenomenon, which seriously affects the performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/14C04B35/64C04B35/63C04B35/80
Inventor 曾友强
Owner HUNAN HUALIAN YIBAILI CERAMIC IND
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