Strengthened dolomite pottery blank mud

A technology of Baiyun and pottery blanks, which is applied in the field of Baiyun pottery blanks, can solve the problems of high glaze firing temperature, unstable process index of blank glaze adaptability, many bonding defects of blank glaze, etc., and achieve the effect of offsetting stress contrast

Active Publication Date: 2014-03-12
FUJIAN WILL CERAMIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mud material can overcome the problems of the existing strengthened white cloud pottery, such as many defects in the comb...

Method used

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  • Strengthened dolomite pottery blank mud

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0023] Strengthen the clay of the dolomite clay, which preferably includes the subordinate component: 65% SiO by weight percentage 2 , 12.7% Al 2 O 3 , 8.5% MgO, 5.0% CaO, 1.5% K 2 O, 0.6% Na 2 O, 5.8% ignition loss and trace Fe 2 O 3 , TiO 2 And other impurities. SiO in formula 2 , Al 2 O 3 , MgO, CaO, K 2 O, Na 2 O and other chemical components can be introduced through natural mineral raw materials such as kaolin, ball clay, magnesia clay, bentonite, porcelain stone, talc, tremolite, diopside, wollastonite, potassium, and albite. Among them, kaolin, ball clay, magnesia clay, bentonite, etc. can also contribute plasticity and cohesiveness to the forming of mud.

[0024] The glaze firing temperature of the strengthened white cloud pottery mud in the present invention is 1080±10°C. The sludge expansion coefficient is controlled at β200~230×10 —6 In the range of / ℃, the expansion coefficient range of glaze is β170~200×10 —6 / ℃, its fired products can ensure good and stable bonding...

Embodiment approach 2

[0026] Reinforced dolomite clay, the clay includes the subordinate component: 69.8% SiO 2 , 11.6% Al 2 O 3 , 6.0% MgO, 6.9% CaO, 1.3% K 2 O, 0.5% Na 2 O, 3.5% ignition loss and trace Fe 2 O 3 , TiO 2 And other impurities. SiO in formula 2 , Al 2 O 3 , MgO, CaO, K 2 O, Na 2 Chemical elements such as O can be introduced through natural mineral raw materials such as kaolin, ball clay, magnesia clay, bentonite, porcelain stone, talc, tremolite, diopside, wollastonite, and potassium albite.

Embodiment approach 3

[0028] Strengthen the clay of dolomite clay, which includes the following components by weight percentage: 60.7% SiO 2 , 14.7% Al 2 O 3 , 6.1% MgO, 8.0% CaO, 2.1% K 2 O, 0.8% Na 2 O, 7.0% ignition loss and trace Fe 2 O 3 , TiO 2 And other impurities. SiO in formula 2 , Al 2 O 3 , MgO, CaO, K 2 O, Na 2 Chemical elements such as O can be introduced through natural mineral raw materials such as kaolin, ball clay, magnesia clay, bentonite, porcelain stone, talc, tremolite, diopside, wollastonite, and potassium albite.

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Abstract

The invention relates to strengthened dolomite pottery blank mud and particularly relates to a formula of the strengthened dolomite pottery blank mud, which can form a coupling and self-adapting blank glaze intermediate layer through blank glaze mass transfer interaction, and a preparation process thereof. The blank mud contains the following chemical ingredients in percentage by weight: 60-70% of SiO2, 11-15% of Al2O3, 6-10% of MgO, 2-8% of CaO, 0.5-3.0% of K2O, 0.5-3.0% of Na2O and 3.5-7.0% of loss on ignition, wherein the total ingredient content of MgO and CaO is higher than 12%, and the total ingredient content of Na2O and K2O is lower than 3%. According to strengthened dolomite pottery prepared from the blank glaze coupled and self-adapted strengthened dolomite pottery blank mud disclosed by the invention through firing, when the strengthened dolomite pottery is autoclaved for 30 minutes in an autoclave at the temperature of 170 DEG C while maintaining the pressure of 500KPa, the phenomena of glaze peeling and glaze cracking do not occur, so that the blank glaze binding performance reaches the standards of export products.

Description

Technical field [0001] The invention relates to a dolomite slab mud, in particular to a formula and a preparation process of the strengthened dolomite slab mud which can form a coupling adaptive slab glaze intermediate layer through the mass transfer interaction of the slab glaze. Background technique [0002] Strengthened white cloud pottery is also called heavy white cloud pottery, which is an upgraded version of light white cloud pottery. In the early 1990s, Taiwanese ceramic manufacturers went west to the mainland to invest and set up factories, and introduced a new low-temperature light-weight ceramic type originally produced in Japan-lightweight dolomite, because the ceramic clay body introduced dolomite and calcite. The combination of calcium magnesium carbonate mineral raw materials such as magnesite, magnesite, etc. endows the porcelain with the characteristics of light weight, low firing temperature (1060°C), and low shrinkage (shrinkage rate of 4-6%), making this porce...

Claims

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Application Information

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IPC IPC(8): C04B33/13
Inventor 黄新开
Owner FUJIAN WILL CERAMIC CO LTD
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