Jian tea bowl firing process

A process and green body technology, which is applied in the field of sintering process, can solve the problems of unclear formula selection and temperature control, high energy consumption, rare rabbit hair, etc., and achieves high artistic value and appreciation value, and the process flow is clear. , the effect of beautiful stripes

Active Publication Date: 2020-05-29
蔡炳盛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The yield rate of the process for preparing rabbit hair Jianzhan reported at present is low, and there are the following limitations: first, the selection of formula and the control of temperature are not clear, the firing temperature is high (up to 1300 ° C), the energy consumption is large, and often The following defects are produced: body cracking, glaze sticking to the bottom, glaze skipping, glaze shrinkage, etc.; second, rabbit hairs are not displayed or unclear, rabbit hairs are rare or too dense, and the yield rate is low (the yield rate is generally 20 -40%), it is difficult to produce beautifully spotted rabbit hair
[0005] If the fired Jianzhan cracks, shrinks the glaze, has weird shapes, is too sparsely distributed, or is too compact to be connected into one piece, etc., it is a defective product, which is generally smashed and does not flow into the market. Waste of resources and power resources (most raw materials in blanks and glazes belong to mineral resources) and waste of labor costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Jianzhan firing process is characterized in that it comprises the following steps:

[0044] (1) prepare body raw materials and glaze slurry;

[0045] The green body raw material is prepared by the following method: mixing 4 parts by weight of red mud, 3 parts by weight of white mud and 20 parts by weight of field mud, pulverizing, elutriating, passing through a 100-mesh sieve, pressing filtration, and then adding 0.2 parts by weight 1 part of leaf powder, smelting and stale for 15 days to obtain the green body raw material;

[0046] Described leaf powder is that dry maple leaf is ground into 100 orders;

[0047] The glaze slurry is prepared by the following method: 80 parts by weight of glaze stone, 30 parts by weight of potassium feldspar, 10 parts by weight of talc, 20 parts by weight of limestone, 5 parts by weight of calcite, 1 part by weight of iron red, Mix 10 parts by weight of Taihu mud and 5 parts by weight of yellow mud, add 1.2 times by weight of water and ...

Embodiment 2

[0062] The difference between this embodiment and embodiment 1 is:

[0063] Step (5) is replaced by: putting the qualified green body into the kiln again for roasting, and the roasting passes through the following stages:

[0064] The first stage: the temperature of the kiln is raised from normal temperature to 300°C at a constant speed after 40 minutes; the temperature of the kiln is raised from 300°C to 900°C at a constant speed after another 90 minutes;

[0065] The second stage: the temperature of the kiln is raised from 900°C to 1200°C at a constant speed after another 150 minutes;

[0066] The third stage: heat preservation at 1200°C for 3 hours, and when the heat preservation reaches 2 hours, put in 250g of oil firewood per cubic meter of kiln space, once every 10 minutes, and throw in 3 times in total;

[0067] The fourth stage: stop the furnace, cool naturally, and leave the kiln.

[0068] refer to figure 2 , the Rabbit Hair Jianzhan obtained in this example is a ...

Embodiment 3

[0071] The difference between this embodiment and embodiment 1 is:

[0072] Replace the fourth stage of step (5) with: stop the furnace, open the kiln door, close the kiln door when the temperature of the kiln drops to 1180°C, and put in 80g of fuel oil per cubic meter of kiln space, every 3 minutes Throw once, 7 times in total, starting from the second time, the amount of diesel fuel is reduced by 5g per cubic meter of kiln space each time; 2 minutes after the last throw, open the firewood inlet for 3 minutes to reduce the reducing atmosphere, and then close the throw Chaikou.

[0073] The Jianzhan obtained in this example is a partridge-spotted Jianzhan, the color of the glaze is silver blue, slightly tinged, and the spots are round or oval, with different sizes, roughly lustrous yellow-brown, distributed or Dense or sparse, the shape is like boiling oil droplets, and it shines like oil droplets on the water surface.

[0074] According to this embodiment, the yield is abou...

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Abstract

The invention discloses a Jian tea bowl firing process which comprises the following steps: preparing a green body raw material and glaze slip, drawing and forming the green body raw material, performing trimming to obtain a green body, glazing the green body, firing the green body for the first time, putting the qualified green body into a kiln again, roasting the green body, naturally cooling the product and discharging the product. The process flows such as the formula, the firing atmosphere and the temperature curve are clear and easy to control, the stability is good, and the rate of finished products is high. Uniform and fine hairs penetrate through a black glaze layer of a fired rabbit hair Jian tea bowl, are clear, have proper density and are radial, the stripes are attractive, andthe Jian tea bowlhas extremely high artistic value and appreciation value.

Description

technical field [0001] The invention relates to the technical field of porcelain, in particular to the firing process of Jianzhan. Background technique [0002] Jianzhan, because it was produced in Jian'an County, Jianzhou Prefecture, Song Dynasty, is called Jianzhan. It flourished in the late Northern Song Dynasty and the early and middle Southern Song Dynasty, and was used by the royal family in the Song Dynasty. [0003] The rabbit hair Jianzhan has yellow-brown streaks in the glaze layer of the blue and black background, which looks like a rabbit hair, so it is called the rabbit hair Jian lamp. [0004] The yield rate of the process for preparing rabbit hair Jianzhan reported at present is low, and there are the following limitations: first, the selection of formula and the control of temperature are not clear, the firing temperature is high (up to 1300 ° C), the energy consumption is large, and often The following defects are produced: body cracking, glaze sticking to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13C04B33/34C04B41/86C03C8/00
CPCC04B33/1305C04B33/1315C04B33/34C04B41/86C04B41/5022C03C8/00C04B2235/6562C04B2235/6567C04B2235/661C04B41/4539C04B41/0072
Inventor 蔡炳盛蔡威蔡杰
Owner 蔡炳盛
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