Preparation method of glaze-free pottery

A technology for pottery and containers, which is applied in the field of preparation of unglazed pottery, which can solve the problems of rough manufacturing process, easy water seepage, and high viscosity of pottery clay, and achieve the effects of ensuring food safety, low water absorption, and not easy to crack

Inactive Publication Date: 2018-12-18
王瑞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of pottery mainly uses the wire rod method as the main technical means. The firing temperature is generally between 850°C and 900°C. The production process is rough, and problems such as water seepage are prone to occur after firing.
At the same time, due to the origin of the clay, the viscosity of the clay is very high, and the failure rate is very high in the process of grouting and pressure forming, so there is no pottery for grouting and pressure forming at this stage

Method used

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Effect test

specific Embodiment

[0046] The following are specific embodiments of the present invention: (the following parts all refer to parts by weight)

[0047] A preparation method of unglazed pottery, the steps are:

[0048] 1) Preparation of high-viscosity clay raw materials:

Embodiment 1

[0050] i) Take the local high-viscosity clay in Hainan, dry it, crush it, remove impurities, grind it, and remove large particles of impurities after passing through an 80-mesh sieve to obtain the initial high-viscosity clay;

[0051] ii) Mix and stir the initial high-viscosity clay and water according to the ratio of 1:6 by weight, and grind them in a ball mill for 23 hours to make a slurry;

[0052] iii) inject the mud into the mixing tank and let it stand for 23 hours;

[0053] iii) Use a container to hold the water left standing, pass the remaining mud through a 250 mesh sieve, put it in the container and let it stale for 70 hours, then use a vacuum mud filter to filter the water and dry it thoroughly in the drying room to obtain High viscosity clay raw material;

Embodiment 2

[0055] i) Take the local high-viscosity clay in Hainan, dry it, crush it, remove impurities, grind it, and remove large particles of impurities after passing through a 100-mesh sieve to obtain the initial high-viscosity clay;

[0056] ii) After mixing and stirring the initial high-viscosity clay and water according to the ratio of 1:8 by weight, put them into a ball mill and grind for 25 hours to make a slurry;

[0057] iii) the slurry is injected into the mixing tank and left to stand for 25 hours;

[0058] iii) Use a container to hold the water left standing, pass the remaining mud through a 300-mesh sieve, put it in the container and let it stale for 74 hours, then use a vacuum mud filter to filter the water and put it in a drying room for thorough drying to obtain High viscosity clay raw material;

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Abstract

The invention relates to a preparation method of a pottery, in particular to a preparation method of a glaze-free pottery. The preparation method comprises the following steps: (1) preparing a high-viscosity clay raw material; (2) preparing a fixed-proportion material: mixing 10 to 15 parts of quartz raw material, 0 to 5 parts of feldspar raw material, 0 to 5 parts of dolomite raw material, 0 to 10 parts of talcum raw material, and 70 to 85 parts of high-viscosity clay,and to obtaining the fixed-proportion material; (3) mixing the fixed-proportion material and water, ball milling for 11 to 13hours by using a ball milling machine, aging for 23 to 25 hoursto, obtaining a fixed-proportion material mixture, adding an anti-flocculating agent and electrolyte,and to obtaining slurry; and (4) injection molding or stamping molding. The density and exquisiteness of the formed pottery are greatly improved, and the water permeability can also reach the standard of the pottery for daily use. Moreover, the preparation method is simple in process, rich in resource, pollution-free to the environment, environmentally-friendly, and energy-saving.

Description

technical field [0001] The invention relates to a method for preparing pottery, in particular to a method for preparing unglazed pottery. Background technique [0002] People in Changjiang Li Autonomous County, Baisha Li Autonomous County, Ledong Li Autonomous County, Sanya City, Wuzhishan City, Dongfang City, Lingshui Li Autonomous County and other places in Hainan have used local soil to make pottery for daily use. It has been used for more than 6,000 years. history. In 2006, Li nationality's handmade pottery skills were selected into the national intangible cultural heritage, which has extremely high cultural value. But with the progress of the times, this kind of pottery has been gradually eliminated by society. This kind of pottery mainly uses the wire rod method as the main technical means. The firing temperature is generally between 850°C and 900°C. At the same time, due to the origin of the clay, the viscosity of the clay is very high, and the failure rate in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/16C04B33/13C04B33/04C04B33/34
CPCC04B33/04C04B33/13C04B33/16C04B33/34C04B2235/321C04B2235/3427C04B2235/3463C04B2235/602
Inventor 周孟熙王瑞郭春森
Owner 王瑞
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