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Pug formula of bone porcelain and preparation technology thereof

A preparation process, a technology of bone china, applied in the field of ceramics, can solve the problems such as the decrease of plasticity of clay materials, and achieve the effect of fine porcelain, good thermal stability and good plasticity

Inactive Publication Date: 2009-09-30
郑小凌
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AI Technical Summary

Problems solved by technology

[0003] It is well known that the more bone ash powder is added in the bone china mud, the higher the whiteness and light transmittance of bone china will be, but it will lead to a decrease in the plasticity of the mud. There are certain limitations in quality such as light transmittance and

Method used

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Embodiment Construction

[0014] 1. Prefabrication of raw materials:

[0015] 1. Prefabrication of raw materials:

[0016] Kaolin: Grinding after elutriation, so that the fineness of kaolin reaches more than 300 mesh;

[0017] Potassium-sodium feldspar and quartz: Grind potassium-sodium feldspar and quartz respectively, so that the fineness of the two raw materials can reach more than 300 mesh;

[0018] Bone Ash Powder: Use a specific calcination temperature curve for calcination. After the calcination is completed, grind it to make the bone ash powder finer than 300 mesh. 30-50 minutes; from 400°C to 1050°C, the calcination time is 50-80 minutes with ordinary flame; from 1050°C to 1250°C, with strong reducing flame calcination, the calcination time is 40-60 minutes; from 1250°C to 1370°C , using ordinary flame calcination, calcination time 50 to 70 minutes.

[0019] 2. The preparation process of mud:

[0020] Take 27% of prefabricated kaolin, 8% of potassium albite feldspar, 10% of quartz, and 55%...

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PUM

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Abstract

The invention discloses a pug formula of bone porcelain and preparation technology thereof. The pug formula comprises the following chemical compositions in percentage by weight: 18 to 30 percent of SiO2, 1 to 3 percent of K2O, 15 to 25 percent of Al2O3, 1 to 3 percent of Na2O, 28 to 38 percent of CaO, and 18 to 24 percent of P2O5. The preparation technology comprises the steps of: preparing raw materials, mixing, adding water until the concentration is lower than 15 percent, removing iron, pressing pug to drain the water until the water content is between 20 and 23 percent, performing vacuum pug milling for 3 to 5 times, and obtaining a finished pug product. The white content of a test piece produced by adopting the pug can reach more than 95.5, the white content of the porcelain can reach more than 93, and the produced porcelain has high light transmittance as well as good strength and thermal stability, and has the characteristics of exquisite porcelain, soft color and luster and the like.

Description

technical field [0001] The invention relates to the technical field of ceramics, in particular to a clay formula for producing high-quality bone china and a preparation process thereof. Background technique [0002] Bone china is mixed with animal ashes (generally the ashes of cattle, sheep and other herbivores, preferably cattle ashes) in the ceramic mud. The formation of bone china mainly depends on silica, alumina and calcium oxide. The higher the content of calcium oxide, the better the color. In nature, there are not many sources of calcium oxide, so the bone ash powder of animals is chosen as the source of calcium oxide. The bone china is fired twice by high temperature bisque firing and low temperature glaze firing. It has become a porcelain with high whiteness, good transparency, fine porcelain quality, and bright and smooth glaze. It is known as "thin as paper, white as jade, bright as a mirror, and sound like a chime". It is the whiteness of porcelain, and the whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13
Inventor 郑小凌
Owner 郑小凌
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