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Method for improving plasticity of ceramic raw materials

A technology of ceramic raw materials and plasticity, which is applied in the direction of ceramic molding machines, chemical instruments and methods, and analytical materials, etc., can solve problems affecting product quality, insufficient plasticity, and many cracks, so as not to affect drying shrinkage, improve plasticity, and operate methods simple effect

Pending Publication Date: 2021-03-30
LONGYAN KAOLIN CLAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the plasticity of ceramic raw materials is insufficient, there will be more cracks when the blank is formed, which will seriously affect the product quality

Method used

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  • Method for improving plasticity of ceramic raw materials

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] 0.6% of the weight of the ceramic raw material is stirred evenly in a small amount of water, added to the ceramic raw material slurry with a mass concentration of 20%, mixed and stirred evenly, and filtered to form a mud cake. The moisture content of the mud cake was controlled to be 23.5%, the drying shrinkage was measured, and the plasticity R1 of the mud cake was measured by the plasticity index method with a KS-B microcomputer plasticity tester.

Embodiment 2

[0012] The cross-linked starch of 0.8% by weight of the ceramic raw material is stirred evenly in a small amount of water, added to the ceramic raw material slurry with a mass concentration of 15%, mixed and stirred evenly, and filtered to form a mud cake. The moisture content of the mud cake was controlled to be 23.5%, the drying shrinkage was measured, and the plasticity R2 of the mud cake was measured by the plasticity index method with a KS-B microcomputer plasticity tester.

Embodiment 3

[0014] Dissolve 0.2% of the weight of the ceramic raw material sodium lignosulfonate in a small amount of water, add it to the ceramic raw material slurry with a mass concentration of 20%, mix and stir evenly, and filter under pressure to form a mud cake. The moisture content of the mud cake was controlled to be 23.5%, the drying shrinkage was measured, and the plasticity R3 of the mud cake was measured by the plasticity index method with a KS-B microcomputer plasticity tester.

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Abstract

The invention relates to a method for improving plasticity of a ceramic raw material, which comprises the following step of: adding one of corn starch, crosslinked starch or sodium lignin sulfonate into the ceramic raw material according to the proportion of 0.2 to 0.8 percent of the weight of the ceramic raw material. By adjusting the adding proportion of the compound, the plasticity of the ceramic raw material can be improved, and meanwhile, the drying shrinkage is not influenced. Materials used in the method are simple and easy to obtain, and the operation method is simple and suitable forindustrial use.

Description

technical field [0001] The invention relates to the processing field of non-metallic minerals, in particular to a method for improving the plasticity of ceramic raw materials. Background technique [0002] Plasticity is a prerequisite for ensuring plastic molding of ceramic products, and it is the technological basis for ceramic raw materials to be made into different ceramic products. Plastic raw materials mainly play the role of plasticization and combination in the production process. It endows the blank with plasticity and grouting performance, and ensures the dry blank strength before porcelain and various performance after firing. They are the basis of porcelain. If the plasticity of the ceramic raw material is insufficient, the blank will crack more during forming, which will seriously affect the product quality. SUMMARY OF THE INVENTION [0003] The invention designs a method for improving the plasticity of the ceramic raw material, which increases the plasticity ...

Claims

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Application Information

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IPC IPC(8): G01N11/00B28C1/16B28B3/00
CPCG01N11/00B28C1/16B28B3/00
Inventor 章霞
Owner LONGYAN KAOLIN CLAY