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Oxidation-fired sanitary ceramic and preparation process thereof

A technology for sanitary ceramics and porcelain bodies, applied in the field of ceramics, can solve the problems of increased glazing thickness, insufficient exhaust gas, etc., and achieve the effects of improving product quality and reducing structural defects on the surface of the glaze layer.

Active Publication Date: 2021-07-20
唐山市丰华陶瓷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The large-volume sanitary ceramics process requires the upper body to be enlarged and thickened, and the thickness of the glazing is increased, and the exhaust volume during the sintering process is increased, but the air permeability of the glaze layer formed by the drying of the glaze slurry decreases instead, so the exhaust during sintering is not as good as The relatively small volume of sanitary ceramics is adequate

Method used

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  • Oxidation-fired sanitary ceramic and preparation process thereof
  • Oxidation-fired sanitary ceramic and preparation process thereof
  • Oxidation-fired sanitary ceramic and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0051] A green body, its preparation method is as follows:

[0052] Ball clay, kaolin, porcelain stone, kaolinite, feldspar, quartz and water are put into the ball mill according to the mass ratio of 0.33:0.38:0.09:0.12:0.08:0.5 and ball milled. , satisfying that the sieve residue is less than 0.03wt%, and the ball abrasive is obtained;

[0053] After the ball mill slurry is mixed with water, prepared and dispersed evenly, it is aged for 2 days to obtain the green body slurry, and the density of the green body slurry is 1.72g / cm 3 .

[0054] The green body slurry is formed by high-pressure grouting, the grouting pressure is 6.3MPa, the grouting time is 1.5h, and the green body is obtained after drying and trimming. Here, the outer size of the green body is 50cm*22cm*70cm, and the wall thickness is 1.5cm.

preparation example 2

[0056] A green body, based on the preparation example 1, the difference is that the grouting time is 2.3 hours, the outer size of the green body is 50cm*22cm*70cm, and the wall thickness is 2cm.

preparation example 3

[0058] A green body, based on the preparation example 1, the difference is that the grouting time is 3.1 hours, the outer size of the green body is 50cm*22cm*70cm, and the wall thickness is 2.5cm.

[0059] Preparation example of special cupro ammonia fiber particles

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Abstract

The invention discloses oxidation-fired sanitary ceramic and a preparation process thereof.The oxidation-fired sanitary ceramic comprises a ceramic body and a glaze layer, the glaze layer is obtained by glazing and firing glaze slip, and the glaze slip is prepared from, by mass, 28-33 parts of quartz, 8-12 parts of kaolin, 7-13 parts of ball clay and 0.7-1.1 parts of frit as raw materials; auxiliary materials are 5-8 parts of a glaze color blending material and 0.05-0.1 part of ferrous oxalate; the particle size of ferrous oxalate is 14-18 [mu] m; and the preparation process comprises the following steps: glazing a green body with the glazing thickness of 2-3mm, and drying to obtain a to-be-sintered product; and firing in an oxidizing atmosphere to obtain the product. According to the invention, auxiliary materials are added and improved, at low temperature in the firing process, gas in the glaze layer is rapidly dredged, a larger gap channel is formed, a discharge channel is provided for gas removal in the subsequent stage, the possibility of appearance of surface structure defects of the glaze layer fired by the glaze layer is reduced, and the product quality is improved.

Description

technical field [0001] The invention relates to the field of ceramics, more specifically, it relates to an oxidized firing sanitary ceramic and a preparation process thereof. Background technique [0002] Sanitary ceramics are glazed ceramic products used in toilets, kitchens and laboratories, including washbasins, water tanks, sinks, bathtubs, soap boxes, and dressing table boards. The existing sanitary ceramics production process has the following production process: green body slurry preparation-green body grouting molding-green body drying-green body trimming-glazing-firing. During the production process, the inventor found that for large-volume sanitary ceramics such as water tanks, sinks, and bathtubs, the phenomenon of glaze ripples and dot-like bulges on the surface is higher than that of small-volume sanitary ceramics such as soap boxes and hooks. After further research, the inventor found that in addition to the influence of the composition of the glaze and the bo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13C04B33/16C04B33/28C04B33/24C03C8/14C04B41/86
CPCC04B33/131C04B33/16C04B33/28C04B33/24C03C8/14C04B41/86C04B41/009C04B41/5022C04B2235/3463C04B41/4539Y02P40/60
Inventor 王瑞光
Owner 唐山市丰华陶瓷有限公司