Firing process of bone-china

A bone china and craft technology, which is applied in the field of bone china firing technology, can solve the problems of restricting the production and popularization of bone china, difficult to control the production process, unstable product quality, etc., and achieves stable product quality and good transparency. , the effect of low cost

Inactive Publication Date: 2015-05-06
KAZUO YUCHENG PURPLE CLAY PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the serious shortage of bone sources in the world, and the different bone sources in the production process, the production process is not easy to control, resulting in unstable product quality, which seriously restricts the production and promotion of bone china.

Method used

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  • Firing process of bone-china

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Synthetic bone meal

[0018] Add calcium hydroxide and phosphoric acid into the reaction tank according to the mass ratio of 1:1, react at 60°C for 15h, press filter with a filter press, so that the mass content of water in the filter cake is 8%, after drying, dry at 1180 Calcining at ℃ for 20 hours, magnetic separation to remove iron, and obtain synthetic bone meal;

[0019] (2) Preparation of bone china

[0020] Use 40kg of synthetic bone powder, 40kg of crystal quartz powder, 20kg of kaolin and 10kg of potassium feldspar, and add 50kg of water to grind it for 20 hours with a ball mill to obtain a powder with a fineness of 250 meshes, and filter it with a filter press to obtain mud flakes, so that the mud flakes contain The water content is 18wt%. After the mud flakes are made into mud strips by a vacuum mud mill, the mud is shaped and dried by a mechanism to obtain an embryo body; Trim the billet and put it into a firing furnace with a temperature of 100°C for ...

Embodiment 2

[0023] (1) Synthetic bone meal

[0024] Add calcium hydroxide and phosphoric acid into the reaction tank according to the mass ratio of 1:1, react at 80°C for 10 hours, press filter with a filter press, so that the mass content of water in the filter cake is 6%, after drying, dry at 1180°C Calcining at lower temperature for 10 hours, removing iron by magnetic separation to obtain synthetic bone powder;

[0025] (2) Preparation of bone china

[0026] Use 50kg of synthetic bone meal, 30kg of crystal quartz powder, 35kg of kaolin and 5kg of potassium feldspar, and use a ball mill to add 100kg of water to grind for 25 hours to obtain a powder with a fineness of 250 meshes, and use a filter press to obtain a mud sheet. After the mud flakes are made into mud strips by a vacuum mud mill, the mud is shaped and dried to obtain an embryo body; the firing furnace is heated to 100°C, and the molded embryo body is processed Trim the billet and put it into a firing furnace with a temperat...

Embodiment 3

[0029] (1) Synthetic bone meal

[0030] Add calcium hydroxide and phosphoric acid into the reaction tank according to the mass ratio of 1:1, react at 70°C for 12 hours, press filter with a filter press, so that the mass content of water in the filter cake is 7%, after drying, dry at 1180°C Lower calcining for 15 hours, magnetic separation to remove iron, to obtain synthetic bone powder; the detection index of synthetic bone powder is as follows:

[0031] (2) Preparation of bone china

[0032] Use 45kg of synthetic bone powder, 35kg of crystal quartz powder, 30kg of kaolin and 8kg of potassium feldspar, and use a ball mill to add 75kg of water to grind for 22 hours to obtain a powder with a fineness of 250 meshes, and use a filter press to obtain a mud sheet. After the mud flakes are made into mud strips by a vacuum mud mill, the mud is shaped and dried by a mechanism to obtain an embryo body; the firing furnace is heated to 100°C, and the embryo body obtained by molding is pr...

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Abstract

The invention relates to a firing process of bone-china. The process comprises the following steps: adding calcium hydroxide and phosphoric acid into a reaction pond, carrying out reaction for 10-15 hours at 60-80 DEG C, filter-pressing, drying and calcining and carrying out magnetic separation to remove iron to obtain synthetic bone meal; adding water into the synthetic bone meal, rock crystal powder, kaolin and potassium feldspar by virtue of a ball mill to obtain powder with the fineness of 250 meshes, filter-pressing the powder to china sheets by a filter press, preparing china sheets into stripes by virtue of a vacuum pug mill, and molding and drying the slurry by machining and molding to obtain a blank; and biscuiting and glaze firing to obtain the bone-china. The process has the advantages that the firing process is simple; raw materials are easily available and low in cost; the product is stable in quality; besides the characteristics of the bone-china fired by common animal bone black, the fired bone-china further has the characteristics of high whiteness, good transparency and high heat stability; the whiteness of the synthetic bone black is greater than or equal to 90 degrees, the transparency is greater than or equal to 45%, and the heat stability is that at 180 DEG G, the bone-china put in water at 20 DEG C for heat exchange three times is not cracked.

Description

technical field [0001] The invention relates to a firing process of bone china. Background technique [0002] Bone china is recognized as a high-grade fine porcelain for daily use in the international market. The traditional bone china uses animal bone powder as raw material. The whiteness of the product is 80 degrees, the transparency is 38 degrees, and the thermal stability is 140 ℃ when placed in 20 ℃ water. It does not burst, and has the characteristics of fine porcelain, soft colors, bright glaze, regular shape and high transparency. However, due to the serious lack of bone sources in the world, and the different bone sources in the production process, the production process is not easy to control, resulting in unstable product quality, which seriously restricts the production and promotion of bone china. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a firing process of bone china, which is simple to oper...

Claims

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Application Information

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IPC IPC(8): C04B35/447C04B35/14C04B35/626
Inventor 刘福王立明
Owner KAZUO YUCHENG PURPLE CLAY PROD
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