Raw material for low-temperature firing of Longquan celadon and firing method

A technology of low-temperature firing and raw materials, applied in the field of material science, can solve the problems of low-temperature firing of celadon, achieve rich glaze, reduce manufacturing costs, and achieve good porcelain quality

Active Publication Date: 2013-11-13
ZHEJIANG TIANFENG CERAMIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many reports on the use of sintering aids or nanoparticles to reduce the sintering temperature of daily-use porcelain and electronic porcelain products, so far, there are few related reports on low-temperature firing of celadon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The raw material weight percentage of celadon fetal bone body is: porcelain stone 36%, purple gold soil 42%, perlite 10%, nano calcium carbonate 8%, zinc borosilicate glass powder 4%. The composition of the glaze ingredients by weight: 18% quartz, 42% feldspar, 21% purple gold soil, 15% limestone, 4% zinc borosilicate glass powder.

[0018] Firing process: first put the green body raw materials into the ball mill in proportion, add 1wt% dispersant, and ball mill for 38 hours. Biscuit firing at 750°C for 40 minutes; put the ingredients into a ball mill according to the glaze ratio, add 1wt% dispersant, and pour out the glaze slurry after ball milling for 42 hours; smooth the biscuit-fired body with sandpaper, first dip in glaze, the thickness of the glaze The thickness is 2~3mm, dried in the air, and then sprayed twice to achieve a thickness of 5~6mm, which is the best, and then put into the kiln for firing after natural drying; it takes 3 hours to raise the temperature ...

Embodiment 2

[0020] The raw material weight percentage of celadon fetal bone body is: porcelain stone 30%, purple gold soil 50%, perlite 12%, nano calcium carbonate 2%, zinc borosilicate glass powder 6%. The composition of the glaze ingredients by weight: 25% of quartz, 40% of feldspar, 18% of purple gold soil, 14% of limestone, and 3% of zinc borosilicate glass powder.

[0021] Firing process: first put the green body raw materials into the ball mill in proportion, add 1wt% dispersant, and ball mill for 42 hours. Biscuit firing at 800°C for 30 minutes; mix the ingredients according to the glaze ratio and put them into a ball mill, add 1wt% dispersant, and pour out the glaze slurry after ball milling for 45 hours; smooth the biscuit-fired body with sandpaper, dip the glaze first, and the thickness of the glaze The thickness is 2~3mm, dried in the air, and then sprayed twice to achieve a thickness of 5~6mm, which is the best. After it dries naturally, it is put into the kiln for firing; it ...

Embodiment 3

[0023] The raw material weight percentage of celadon fetal bone body is: porcelain stone 40%, purple gold clay 40%, perlite 8%, nano calcium carbonate 5%, zinc borosilicate glass powder 7%. The composition of the glaze ingredients by weight: 15% quartz, 45% feldspar, 25% purple gold soil, 10% limestone, 5% zinc borosilicate glass powder.

[0024] Firing process: firstly put the green body raw materials into the ball mill in proportion, add 1wt% dispersant, and ball mill for 32 hours. Biscuit firing at 850°C for 20 minutes; fill the ingredients according to the glaze ratio into a ball mill, add 1wt% dispersant, and pour out the glaze slurry after ball milling for 36 hours; smooth the biscuit-fired body with sandpaper, first dip in glaze, the thickness of the glaze The thickness is 2~3mm, dried in the air, and then sprayed twice to achieve a thickness of 5~6mm, which is the best. After it dries naturally, it is put into the kiln for firing; it takes 4 hours to raise the temperat...

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Abstract

The invention relates to a firing technology for low-temperature firing of celadon and aims to provide a raw material for low-temperature firing of Longquan celadon and a firing method. According to the invention, as for a blank body and glaze, a raw mineral material and a chemical raw material which are generally used by the Longquan celadon are adopted for matching, and nano calcium carbonate and zinc borosilicate glass powder are also contained; the nano particle high-specific external surface activity and various additives are combined with a cooling down mechanism, so as to allow the Longquan celadon to be fired under 1,150-11,800 DEG C, and the problems that the Longquan celadon is high in sintering temperature and high in energy consumption are solved. The product has the characteristics of high finished product ratio, good porcelain quality, high strength and the like, and has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of material science, and in particular relates to a firing method of Longquan celadon, which is suitable for manufacturing various high-grade daily-use porcelain and art porcelain, in particular to a preparation method of firing Longquan celadon at low temperature. Background technique [0002] Longquan celadon is known as the "flower of celadon". It is green and crystal clear, as moist as jade, and has a profound influence on Chinese culture. In 2009, it was approved to be included in the "Representative List of Intangible Cultural Heritage of Humanity". At the 2010 World Expo, it perfectly demonstrated the charm of porcelain through the ages, poems and paintings in the south of the Yangtze River, and the value of Longquan industrial celadon is widely accepted by people. However, Longquan celadon uses a unique raw material of purple gold clay and a unique "secondary firing" process, which is very sensitive ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/13C04B33/34
Inventor 梅红玲周方武梅丽玲吴力平徐珂徐佩丹吴丽燕蔡浪平张寿勇陈晓红
Owner ZHEJIANG TIANFENG CERAMIC
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