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Caramel yellow spot crystal glaze

A crystalline glaze and macular technology, applied in the field of sauce-colored macular crystalline glaze, can solve the problems of easy bubbles on the glaze surface, narrow firing range, low high temperature viscosity, etc., achieve stable color, reduce firing temperature, calcium and iron content high effect

Inactive Publication Date: 2019-02-22
禹州市大龙山钧瓷文化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if a large amount of iron oxide is used as a colorant, it is easy to produce defects such as black spots and cloudy yellow, and the firing range is very narrow. If the melting range is too narrow, defects such as bubbles and pinholes are prone to appear on the glaze surface. It has low viscosity at high temperature and is easy to flow. Glaze, resulting in low yield

Method used

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  • Caramel yellow spot crystal glaze

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A caramel macular crystalline glaze is prepared from the following raw materials in parts by weight: 45-55 parts by weight of black medicine, 24-30 parts of ilmenite, 13-17 parts of calcite, 2.5-3.5 parts of iron ore, and 4-6 parts of rutile.

[0023] The black medicine, ilmenite, iron ore, calcite and rutile in the formula are all from Yuzhou. Among them, the black medicine is a kind of clay with high iron content, containing about 64% silicon oxide and 12% aluminum oxide. About 4.5% of iron oxide, about 5.5% of calcium oxide, about 3% of magnesium oxide and a small amount of other elements, the content of calcium oxide in calcite is about 55%, as a cosolvent, can reduce the firing temperature; the content of titanium oxide in ilmenite is 45-50%, iron oxide content is 32-38%, also contains a small amount of silicon oxide, calcium oxide, magnesium oxide and other elements, mainly used as crystallization agent and colorant. Iron ore contains more than 70% iron oxide, rut...

Embodiment 2

[0033] A caramel-colored macular crystalline glaze is prepared from the following raw materials in parts by weight: 50 black medicine, 27 ilmenite, 15 calcite, 3 iron ore, and 5 rutile.

[0034] The preparation method of caramel macula crystalline glaze of the present invention, comprises the following steps:

[0035] (1) Mix the above raw materials, ball mill, and pass through a 250-mesh sieve to obtain glaze slurry;

[0036] (2) Glaze is applied to the carcass after bisque firing;

[0037] (3) Firing, specifically divided into the following stages:

[0038] ① Oxidation stage: rise from room temperature to 1000°C in 6 hours;

[0039] ②Heavy reduction stage: heat up to 1220°C in 7 hours;

[0040] ③Light reduction stage: heat up to 1285°C in 1.5h; hold for 30min;

[0041] ④ Cooling stage: Cool down to 1150°C in 30 minutes, keep warm for 30 minutes; then cool naturally to room temperature.

[0042] The product prepared in this example has ice-like yellow spots flashing in t...

Embodiment 3

[0044] A caramelized macular crystalline glaze is prepared from the following raw materials in parts by weight: 52 parts by weight of black medicine, 26 parts by weight of ilmenite, 17 parts by weight of calcite, 2.5 parts by weight of iron ore, and 5 parts by weight of rutile.

[0045] The preparation method of caramel macula crystalline glaze of the present invention, comprises the following steps:

[0046] (1) Mix the above raw materials, ball mill, and pass through a 250-mesh sieve to obtain glaze slurry;

[0047] (2) Glaze is applied to the carcass after bisque firing;

[0048] (3) Firing, specifically divided into the following stages:

[0049] ① Oxidation stage: rise from room temperature to 1000°C in 6 hours;

[0050] ②Heavy reduction stage: heat up to 1220°C in 7 hours;

[0051] ③Light reduction stage: heat up to 1285°C in 1.5h; hold for 30min;

[0052] ④ Cooling stage: Cool down to 1150°C in 30 minutes, keep warm for 30 minutes; then cool naturally to room temper...

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Abstract

The invention relates to caramel yellow spot crystal glaze which is prepared from the following raw materials in parts by weight: 45-55 parts of black powder, 24-30 parts of ilmenite, 13-17 parts of calcite, 2.5-3.5 parts of iron ores and 4-6 parts of rutile. Yellow spot crystals like frost flowers are generated on a bottom color of caramel from five glaze making raw materials: black powder, ilmenite, calcite, iron cores and rutile. The caramel yellow spot crystal glaze is quite attractive, quite stable in color and high in rate of finished products.

Description

technical field [0001] The invention belongs to the technical field of Jun porcelain production, and in particular relates to a caramel macula crystalline glaze. Background technique [0002] Crystalline glaze is a kind of glaze that contains a sufficient amount of crystalline substances in the firing process. It is in a saturated state after melting, and crystallization is formed during the slow cooling process. The fundamental feature different from ordinary glazes is that the glaze contains a certain amount of visible crystals (that is, the crystal flowers on or in the glaze that we can see). It is a highly decorative artistic glaze, including iron crystal glaze, zinc crystal glaze, manganese crystal glaze, titanium crystal glaze and so on. [0003] Iron-based crystalline glazes appeared earlier and were widely used. However, if a large amount of iron oxide is used as a colorant, it is easy to produce defects such as black spots and cloudy yellows, and the firing range ...

Claims

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Application Information

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IPC IPC(8): C03C8/20C04B41/86
CPCC03C8/20C04B41/5022C04B41/86
Inventor 王思佳王建伟
Owner 禹州市大龙山钧瓷文化有限公司
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