A method for improving the variable rate of Nixing pottery large vessel kiln

A Nixing pottery and large-scale technology, which is applied in the field of improving the variable rate of Nixing pottery large-scale vessel kiln, can solve the problems of low firing rate and easy cracking, and achieve the effects of increasing firing rate, not easy cracking, and enhancing strength

Inactive Publication Date: 2017-03-22
QINZHOU CITY HUAXIA TAIJIQUAN NINGXING POTTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large wall thickness of large vessels, it is easy to crack during firing, and the firing rate is only 60%. As the height of the vessel increases, the firing rate is getting lower and lower. Therefore, for large vessels, , in order to improve the kiln change rate, the problem of low firing rate must be solved first

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Preparing a billet: 50 parts by weight of Dongni, 30 parts by weight of Xini and 8 parts by weight of iron red powder with a particle size of 24 μm are made into a billet;

[0023] 2) Blank forming: making the blank into large vessels of various types (height is 40cm);

[0024] 3) drying the green body;

[0025] 4) Firing the body: send 100 dry large-scale vessel bodies into the kiln, and gradually increase the temperature at a rate of 30°C per hour to 500°C. The ratio of 4kg pine branches to the kiln space is put into the pine branches and the pores of the kiln are closed, and then the temperature is gradually raised to 1000°C at a rate of 200°C per hour, and kept at this temperature for 0.5h, cooled naturally, and out of the kiln. It is the finished product of large-scale utensils of Nixing pottery.

[0026] According to statistics, there are 90 intact Nixing pottery large vessels, of which 82 are kilns.

Embodiment 2

[0028] 1) Preparing a billet: 60 parts by weight of Dongni, 40 parts by weight of Xini and 15 parts by weight of iron red powder with a particle size of 30 μm are made into a billet;

[0029] 2) Body molding: make the blank into large-scale vessels of various types (height is 45cm);

[0030] 3) Trimming the green body;

[0031] 4) drying the green body;

[0032] 5) Firing the body: send 100 dry large-scale vessel bodies into the kiln, and gradually increase the temperature at a rate of 50°C per hour to 750°C. Put 6kg of turpentine into the kiln space to release the resin and close the pores of the kiln, then gradually increase the temperature to 1050°C at a rate of 250°C per hour, keep it for 1 hour at this temperature, cool naturally, and leave the kiln, that is It is the finished product of large-scale pottery of Nixing pottery.

[0033] According to statistics, there are 86 intact large-scale Nixing pottery vessels, of which 80 were kilns.

Embodiment 3

[0035] 1) Preparing a billet: 55 parts by weight of Dongni, 35 parts by weight of Xini and 10 parts by weight of iron red powder with a particle size of 26 μm are made into a billet;

[0036] 2) Blank forming: making the blank into various types of large vessels (height is 50cm);

[0037] 3) Trimming the green body;

[0038] 4) drying the green body;

[0039] 5) Firing the body: send 100 dry large-scale vessel bodies into the kiln, and gradually increase the temperature at a rate of 40°C per hour to 600°C. Put 5kg of wood chips into the kiln space and close the pores of the kiln, then gradually raise the temperature to 1025°C at a rate of 220°C per hour, keep it warm and burn for 0.8h at this temperature, cool naturally, and leave the kiln. It is the finished product of large-scale utensils of Nixing pottery.

[0040] According to statistics, there are 82 intact Nixing pottery large vessels, of which 75 were kilns.

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Abstract

The invention provides a method for increasing kiln transformation ratio of Nixing pottery large vessels. The method comprises the following steps: 1) preparing blanks, namely producing the blanks from 50-60 parts by weight of east mud, 30-40 parts by weight of west mud and 8-15 parts by weight of iron oxide red; 2) blank forming, namely forming the blanks into various large vessels of different shapes; 3) shaping the blanks; 4) drying the blanks; and 5) firing the blanks, namely gradually increasing the temperature to the range of 500-750 DEG C at a temperature rise rate of 30-50 DEG C per hour, adding a kiln transformation material at the temperature and sealing the air holes of the kiln, and then increasing the temperature to the range of 1000-1050 DEG C at a temperature rise rate of 200-250 DEG C per hour, preserving heat at the temperature and firing for 0.5-1 hour, naturally cooling and taking out of the kiln, thereby obtaining the finished products large Nixing pottery vessels.

Description

technical field [0001] The invention relates to a method for preparing pottery, in particular to a method for improving the kiln variability of large-scale Nixing pottery. Background technique [0002] Nixing pottery utensils are divided into large utensils (height ≥ 35cm) and small utensils (both height < 35cm) according to the utensil model. Regardless of the size of the vessel, the production process of Nixing pottery is the same, including the preparation of the blank (the soil east of the Qinjiang River across Qinzhou City, commonly known as Dongni, is soft clay, yellow-white in color, and contains a small amount of quartz sand; The soil in the area west of the Heqin River, commonly known as Xini, is a kind of purple mudstone with high iron content. It is purple in color and has a small amount of iron on the surface. than mixing, through a series of processes such as grinding and dehydration to make blanks), blank forming, trimming blanks, blank drying, blank decora...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/13
Inventor 黄涛默卢珊
Owner QINZHOU CITY HUAXIA TAIJIQUAN NINGXING POTTERY
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