Magnesia porcelain and preparation method thereof

A magnesia porcelain and glaze technology, applied in the field of magnesia porcelain and its preparation, can solve the problems of narrow firing temperature range, easy generation of pinhole defects, difficult temperature control, etc., and achieves elimination of glaze pinholes and residual Stress, the effect of improving glaze brightness

Inactive Publication Date: 2018-07-13
HUNAN KARPERY INDAL
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  • Abstract
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Problems solved by technology

[0002] At present, most domestic medium-temperature magnesia porcelain preparation methods adopt a one-time firing process, but due to the narrow firing temperature range of magnesia porcelain, it is difficult to control the temperature during the firing process, and deformation defects are prone to occur when the temperature is too high or the holding time is too long , when the temperature is too low or the holding time is short, it is easy to produce cracking defects. Therefore, in the current production process of medium-temperature magnesia porcelain, in order to widen the firing range, about 30% raw t

Method used

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Example Embodiment

[0016] In order to make the content of the present invention easier to understand clearly, the present invention will be further described in detail below according to specific embodiments.

[0017] Implement column one:

[0018] A preparation method of magnesia porcelain. The blanks are weighed by mass percentage: sintered talc 32%, raw talc 26%, feldspar 10%, kaolin 15%, bentonite 4%, quartz 13%, mixed ball milling, controlled grinding The fineness of the mud material is 0.008% of the 10,000-hole sieve. After the mud is aged, the green body is obtained by grouting and forming. The green body is pre-bisque fired at a temperature of 1250 ° C and a holding time of 30 minutes;

[0019] Weigh the glaze by mass percentage: feldspar 24%, calcite 14%, kaolin 6%, quartz 14%, ZnO 3%, BaCO 3 4%, 35% glass frit, after mixing ball milling, the fineness of the grinding mud is controlled to be 0.03%, and then the inner and outer surfaces of the bisque-fired vegan tire are glazed, dried, ...

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Abstract

The invention discloses a magnesia porcelain and a preparation method thereof. The magnesia porcelain is prepared by using a billet material and a glaze material, wherein the billet material comprisesthe following components in percentage by weight: 30-45% of burnt talc, 20-35% of raw talc, 5-15% of feldspar, 10-18% of kaolin, 3-5% of bentonite and 0-15% of quartz, and the sum of the weight percentages of the components is 100%; and the glaze material comprises the following components in percentage by weight: 20-40% of feldspar, 5-15% of calcite, 4-8% of kaolin, 0-15% of quartz, 3-5% ZnO, 0-5% of BaCO3 and 20-35% of glass frit, and the sum of the weight percentages of the components is 100%. According to the magnesia porcelain, the quality of the glaze surface is good, the glossiness ishigh, the raw material cost is low, and the production process is simple.

Description

technical field [0001] The invention relates to a magnesia porcelain and a preparation method thereof. Background technique [0002] At present, most of the domestic medium-temperature magnesia porcelain preparation methods adopt a one-time firing process, but due to the narrow firing temperature range of magnesia porcelain, it is difficult to control the temperature during the firing process, and deformation defects are prone to occur when the temperature is too high or the holding time is too long , when the temperature is too low or the holding time is short, it is easy to produce cracking defects. Therefore, in the current production process of medium-temperature magnesia porcelain, in order to widen the firing range, about 30% raw talc is often added. However, due to the one-time firing process, its During the firing process, more pinhole defects will be produced on the glaze surface due to the decomposition of raw talc. In addition, due to the large expansion coefficie...

Claims

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Application Information

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IPC IPC(8): C04B35/20C04B35/622C04B35/64C03C8/14C04B41/86
CPCC03C8/14C04B35/20C04B35/622C04B35/64C04B41/009C04B41/5022C04B41/86C04B2235/3418C04B2235/3472C04B2235/3481C04B2235/349C04B2235/5436C04B2235/606C04B2235/656C04B2235/6567C04B2235/9646
Inventor 肖杨
Owner HUNAN KARPERY INDAL
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