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Quick fired fine ceramics made in open flame roller hearth kiln and technical method

A technology of fine ceramics and roller kiln, which is applied in applications, household utensils, clay products, etc. It can solve the problems of unrefined glaze texture, poor glaze gloss, and poor impact strength, so as to achieve reasonable glaze formula, Short firing cycle and high impact strength

Active Publication Date: 2007-01-24
张民
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Problems solved by technology

Its main defects are: with kaolin as the main component, the cost is relatively high, the gloss of the glaze is poor, the texture of the glaze is not delicate, not soft, the light transmittance is poor, and the impact strength is poor; the firing cycle is relatively long, Low output, high firing cost

Method used

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  • Quick fired fine ceramics made in open flame roller hearth kiln and technical method

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Embodiment Construction

10.3

0.8

[0048] 4) Raw material percentage composition (%)

[0049]

[0050] The invention makes full use of the excellent characteristics of quartz to solve the formulation of blank glaze and open flame firing process. First: Use domestic best-quality quartz (purity greater than 99.6%, particle size 200 mesh, well-crystallized vein quartz), with a whiteness of more than 90. Quartz becomes the skeleton of the green body at high temperature. Under reducing and oxidizing atmospheres After firing, the green body will appear beautiful tender white and elegant milky yellow. Second: According to the theoretical basis of the thermal expansion and phase change of quartz in the green body, during the firing process, the thermal expansion of quartz can partially offset the shrinkage of the green body, and form mullite together with alumina to prevent the green body softening deformation occurs. Third: Due to the high hardness of quartz, through the introduction o...

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Abstract

The present invention is a new ceramic material and new producing technology. The quick fired fie ceramic is produced with the material including kaolin 20-55 wt%, feldspar 10-20 wt%, and quartz 35-60 wt%, and through quick high temperature biscuit firing in an open flame roller hearth kiln and low temperature glaze firing. The low temperature glaze firing in reducing atmosphere can obtain bright and soft glaze with high transmittance, and product with high impact strength, high heat impact strength and high acid and alkali resistance; and the low temperature glaze firing in oxidizing atmosphere can obtain bright glaze without pinhole. The present invention has simple technological process, low cost, great output and low power consumption, and may be applied widely in ceramic industry.

Description

technical field [0001] The invention relates to a new ceramic material and a ceramic manufacturing technology, in particular to a technology for fast-firing fine ceramics in an open flame roller kiln. Background technique [0002] So far, the porcelain of ordinary daily-use ceramics is a ternary formula system based on feldspar-quartz-kaolin. Phase 8-12%, semi-stable cristobalite phase 6-10%. The sintering technology of ordinary daily-use ceramics has a formula of 25-15% feldspar, 17-22% quartz, and 65-55% kaolin. The firing process is generally fired in a tunnel kiln with a box. burn. Its main defects are: with kaolin as the main component, the cost is relatively high, the gloss of the glaze is poor, the texture of the glaze is not delicate, not soft, the light transmittance is poor, and the impact strength is poor; the firing cycle is relatively long, The output is low and the firing cost is high. Contents of the invention [0003] Aiming at the above-mentioned defic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/16C04B41/86C04B35/64C04B33/34
Inventor 张民曹文彪张占波张玲杨雪梅严明江
Owner 张民
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