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Method for increasing sintering rate of Nixing pottery large utensil

A technique for promoting pottery and firing rate, which is applied to clay products, other household utensils, household utensils, etc., which can solve the problem of low firing rate and achieve the effect of increasing firing rate

Inactive Publication Date: 2015-10-07
钦州狮岩斋文化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For large utensils with large pieces and thick walls, during the firing process, the breaking stress caused by a large amount of dehydration of clay minerals (mainly montmorillonite) is far greater than the strength of the green body, making the firing of large utensils difficult. The success rate is generally low, only about 60%, and with the increase of the height of the vessel, the firing rate is getting lower and lower

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1) Preparation of blanks: The following parts by weight of raw materials are made into blanks: 20 parts of east mud, 40 parts of west mud, 15 parts of golden mud, and 1 part of NaCl; first take the above east mud, west mud and golden mud and grind them into a slurry by a ball mill , Press filter, vacuum mud mud, after aging, add NaCl, mix well, it is the blank.

[0019] 2) Blank forming: The blank is made into large vessels of various types (the height of the blank is 35cm).

[0020] 3) Dry the green body.

[0021] 4) Firing the green body: send 100 green bodies of dried large vessels into the kiln, gradually increase the temperature, and increase the temperature to 500℃ at a rate of 85℃ per hour, and then increase the temperature by 120℃ per hour. The heating rate is raised to 1000°C, and the temperature is kept and fired for 0.5h, cooled naturally, and discharged from the kiln, which is the finished product of large-scale Nixing pottery.

[0022] According to statistics, the...

Embodiment 2

[0024] 1) Preparation of blanks: The following parts by weight of raw materials are made into blanks: 25 parts of east mud, 60 parts of west mud, 40 parts of golden mud, and 2 parts of NaCl; first take the above east mud, west mud and golden mud and grind them into mud by a ball mill. Press filter, vacuum mud mud, after aging, add NaCl, mix well, it is blank.

[0025] 2) Forming the blank: the blank is made into large vessels of various types (the height of the blank is 40cm).

[0026] 3) Dry the green body.

[0027] 4) Firing the green body: send 100 green bodies of dried large vessels into the kiln, and gradually increase the temperature. The temperature rises at a rate of 100℃ per hour to 600℃, and then the temperature rises at a rate of 150℃ per hour. The heating rate is raised to 1050°C, and kept at this temperature for 1 hour, cooled naturally, and discharged out of the kiln, which is the finished product of large-scale Nixing pottery.

[0028] According to statistics, there ar...

Embodiment 3

[0030] 1) Preparation of blanks: The following parts by weight of raw materials are made into blanks: 20 parts of east mud, 60 parts of west mud, 20 parts of golden mud, and 2 parts of NaCl; first take the above east mud, west mud and golden mud and grind them into a slurry by a ball mill , Press filter, vacuum mud mud, after aging, add NaCl, mix well, it is the blank.

[0031] 2) Forming the blank: the blank is made into large vessels of various types (the height of the blank is 45cm).

[0032] 3) Dry the green body.

[0033] 4) Firing the green body: send 100 green bodies of dried large utensils into the kiln, and gradually increase the temperature. The temperature rises at a rate of 85℃ per hour to 600℃, and then the temperature rises at a rate of 120℃ per hour. The heating rate is increased to 1050°C, and kept at this temperature for 0.5h, cooled naturally, and discharged from the kiln, which is the finished product of large-scale Nixing pottery.

[0034] According to statistics,...

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Abstract

The invention provides a method for increasing sintering rate of a Nixing pottery large utensil. The method includes the following steps: 1), preparing a blank material, namely making, by weight, 20-25 parts of east mud, 40-60 parts of west mud, 20-40 parts of golden yellow mud and 1-2 parts of NaCl to be the blank material; 2), forming a blank, namely making the blank material to be large utensils of various types; 3), drying the blank; 4), sintering the blank, namely feeding a large utensil blank which is dried into a kiln, increasing temperature gradually, increasing temperature by 500-600 DEG C from85-100 DEG C per hour, increasing temperature by 1000-1050 DEG C from 120-150 DEG C per hour, maintaining the temperature for sintering for 0.5-1h, naturally cooling, enabling the blank to be out of the kiln to obtain a Nixing pottery large utensil finished product. The golden yellow mud is adopted to replace part of the east mud, and a small amount of NaCl is added, so that sintering rate of the Nixing pottery large utensil is increased greatly.

Description

Technical field [0001] The invention relates to a method for making pottery, in particular to a method for improving the firing rate of large-scale Nixing pottery utensils. Background technique [0002] Nixing pottery utensils are divided into large utensils (height ≥35cm) and small utensils (height less than 35cm) according to their model. Regardless of the size of the vessel, the manufacturing process of Nixing pottery is the same, including the following steps: 1) Preparation of blanks: the eastern and western mud are mixed in a ratio of 4-6:6-4, and they are made by a series of processes such as grinding and dehydration. Into the blank; 2) blank forming; 3) blank drying; 4) blank firing: put the dried blank in a kiln and burn it at 1100-1200°C for 8-12h. Because Dongni is the soil east of the Qinjiang River that crosses the downtown area of ​​Qinzhou City, the main component is clay minerals mainly composed of montmorillonite, and clay minerals are dehydrated during the firi...

Claims

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Application Information

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IPC IPC(8): C04B33/13C04B33/32
Inventor 王宁
Owner 钦州狮岩斋文化科技有限公司
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