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High-strength deformation-resistant engineering ceramic product and preparation method thereof

An engineering ceramics, anti-deformation technology, applied to clay products, other household utensils, household utensils, etc., can solve the problems of high strength anti-deformation, large shrinkage, low viscosity of high-temperature melt, etc., to reduce the liquid phase glass The generation of phase and pores is beneficial to the growth of crystals and the effect of prolonging the holding time

Inactive Publication Date: 2015-10-07
江苏省宜兴彩陶工艺厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The blank formula generally used in traditional ceramic containers is composed of clay, kaolin, quartz, and feldspar, which are prepared by wet grinding, beating, molding, drying, and high-temperature firing. During high-temperature firing, the mixture of feldspar and quartz will produce More liquid phases lead to low viscosity and large shrinkage of high-temperature melt, which greatly affects the deformation of ceramic containers. The ceramic containers prepared by this method are all made of natural raw materials, which have high energy consumption, environmental pollution, high carbon emissions, high cost
High-strength anti-deformation engineering ceramic containers have high requirements for product strength, water absorption, thermal stability, deformation resistance, and corrosion resistance. Therefore, the materials of existing ceramic products cannot meet the requirements of high-strength anti-deformation engineering ceramic containers. It is urgent to develop a A blank formula capable of producing high-strength anti-deformation engineering ceramic containers and a reasonable firing process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) The billet is proportioned according to the following parts by weight:

[0026] 27.6 parts of washed kaolin, 34.5 parts of Changxing white clay, 11.2 parts of calcined quartz, 6.4 parts of feldspar, 14.3 parts of pyrophyllite, 3.8 parts of wollastonite, 2.2 parts of spodumene;

[0027] Washed kaolin 25-29 parts, Changxing white clay 32-37 parts, calcined quartz 8-12 parts, feldspar 5-8 parts, pyrophyllite 12-16 parts, wollastonite 3-5 parts, spodumene 1-3 parts ;

[0028] (2) Weigh the raw materials of the above components, and mix the above ingredients according to the ratio: ball: water = 1: 1.09: 0.83 and put them into the ball mill for 24 hours. A 40kg filter press is used to perform pressure filtration until the moisture content of the billet is 19-20%, and then it is stirred and pulped to obtain a shaped billet.

[0029] (3) The above-mentioned molding blank is prepared by a slip-casting molding method, and bisque fired at 1030°C.

[0030] (4) Glaze the bis...

Embodiment 2

[0032] (1) The billet is proportioned according to the following parts by weight:

[0033] 25 parts of washed kaolin, 37 parts of Changxing white clay, 8 parts of calcined quartz, 8 parts of feldspar, 12 parts of pyrophyllite, 5 parts of wollastonite, and 1 part of spodumene;

[0034] (2) Weigh the raw materials of the above components, mix the above ingredients according to the ratio of material: ball: water = 1: 1: 1.05: 0.9 and put them into the ball mill for 22 hours. Then press filter through a 40kg filter press until the moisture content of the billet is 19-20%, and then stir and melt to obtain a shaped billet.

[0035] (3) The above-mentioned molding blank is prepared by a slip-casting molding method, and bisque fired at 1040°C.

[0036] (4) Glaze the biscuit-fired body by dipping glaze, and then glaze-fire after drying. Glaze firing is fired with an oxidizing flame in a roller kiln at a firing temperature of 1195-1205°C and a firing cycle of 5.5 -6 hours. The firing...

Embodiment 3

[0038] (1) The billet is proportioned according to the following parts by weight:

[0039] 29 parts of washed kaolin, 32 parts of Changxing white clay, 12 parts of calcined quartz, 5 parts of feldspar, 16 parts of pyrophyllite, 3 parts of wollastonite, and 3 parts of spodumene;

[0040] (2) Weigh the raw materials of the above components, and mix the above ingredients according to the ratio of material: ball: water = 1: 1: 1.1: 0.7 into the ball cylinder for ball milling. The ball milling time is 25 hours. Then press filter through a 40kg filter press until the moisture content of the billet is 19-20%, and then stir and melt to obtain a shaped billet.

[0041] (3) The above-mentioned molding blank is prepared by a slip-casting molding method, and bisque fired at 1050°C.

[0042] (4) Glaze the biscuit-fired body by dipping glaze, and then glaze-fire after drying. Glaze firing is fired with an oxidizing flame in a roller kiln at a firing temperature of 1195-1205°C and a firing ...

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Abstract

The invention belongs to the field of ceramic preparation, and particularly relates to a high-strength deformation-resistant engineering ceramic product and a preparation method thereof. The preparation method comprises the following steps: proportioning washed kaolin, Changxing white clay, calcined quartz, feldspar, pyrauxite, wollastonite and spodumene used as raw material, carrying out ball milling, iron removal, aging, pressure filtration and pulping by stirring to obtain a formed blank, carrying out injection forming to prepare a billet, carrying out bisque firing, drying, and carrying out glaze firing. According to the preparation method, the wollastonite, spodumene and other materials are used instead of partial materials in the traditional ceramic blank formula, and a reasonable firing regime is adopted, thereby promoting the generation of the mullite and the generation of the high-strength corundum phase during firing, and reducing the generation of the liquid glass phase and bubbles. The tight coupling of the billet and glaze and the prolonging of the holding time are beneficial to the growth of the crystal, and the volume density becomes higher. The prepared high-strength deformation-resistant engineering ceramic product has the characteristics of high mechanical strength, small thermal expansion coefficient, deformation resistance and the like.

Description

technical field [0001] The invention belongs to the field of ceramic preparation, and in particular relates to a high-strength anti-deformation engineering ceramic product and a preparation method thereof. Background technique [0002] The blank formula generally used in traditional ceramic containers is composed of clay, kaolin, quartz, and feldspar, which are prepared by wet grinding, beating, molding, drying, and high-temperature firing. During high-temperature firing, the mixture of feldspar and quartz will produce More liquid phases lead to low viscosity and large shrinkage of high-temperature melt, which greatly affects the deformation of ceramic containers. The ceramic containers prepared by this method are all made of natural raw materials, which have high energy consumption, environmental pollution, high carbon emissions, high cost. High-strength anti-deformation engineering ceramic containers have high requirements for product strength, water absorption, thermal s...

Claims

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Application Information

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IPC IPC(8): C04B33/22C04B33/24
Inventor 周玉萍
Owner 江苏省宜兴彩陶工艺厂
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