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Lead and cadmium free fritted glaze for bone China with high acid resistance and alkali resistance

A lead-free frit, acid and alkali resistance technology, applied in the field of ceramic glaze, can solve the problems such as no research and discussion on the chemical stability of the enamel, and insufficient attention to the chemical stability of the enamel, that is, acid and alkali resistance. Poor acid and alkali resistance and lead-containing problems, good glaze adaptability and good adaptability

Inactive Publication Date: 2009-11-25
张垠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemical stability of enamel, that is, acid and alkali resistance, has not been given enough attention, and the chemical stability of enamel has not been studied and discussed in the design of the formula.

Method used

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  • Lead and cadmium free fritted glaze for bone China with high acid resistance and alkali resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The high acid and alkali resistant lead-free frit glaze described in Example 1 is prepared from the following raw materials in percentage by weight:

[0024] Quartz 28.0%, feldspar 30.0%, alumina 4.0%, titanium dioxide 0.5%, boric acid 25.5.0%, limestone 2.0%, calcined talc 1.0%, lithium carbonate 5.0%, sodium carbonate 4.0%.

[0025] All batch materials are mixed evenly, melted in a frit furnace at 1340-1350°C, and quenched with water to obtain a frit. Then, the frit is ground in a ball mill at room temperature with water as the medium to make a glaze slurry, and the fineness of the glaze slurry is controlled to be below 10 μm, accounting for 81-83%.

[0026] The prepared glaze slurry is applied to the bisque-fired high-grade bone china biscuit and fired at a temperature of 1100-1150° C. to obtain high-quality bone china products. The enamel surface of the product is delicate, smooth, smooth and glossy. At the same time, it has been proved by experiments that the con...

Embodiment 2

[0028] The high acid and alkali resistant lead-free frit glaze described in embodiment 2 is prepared from the following raw materials in weight percent:

[0029] Quartz 29.5%, feldspar 27.0%, alumina 3.5%, titanium dioxide 1.0%, boric acid 26.0%, limestone 1.5%, calcined talc 2.0%, lithium carbonate 5.0%, sodium carbonate 4.5%.

[0030] Mix all batch materials evenly, melt in a frit furnace at 1350-1360°C, and then water-quench the frit. Then, the frit is ground in a ball mill at room temperature with water as the medium to make a glaze slurry, and the fineness of the glaze slurry is controlled to be below 10 μm, accounting for 82.0-84.0%.

[0031]The prepared glaze slurry is applied to the bisque-fired high-grade bone china biscuit and fired at a temperature of 1120-1170° C. to obtain high-quality bone china products. The enamel surface of the product is delicate, smooth, smooth and glossy. At the same time, it has been proved by experiments that the content of lead, cadmiu...

Embodiment 3

[0033] The high acid and alkali resistant lead-free frit glaze described in embodiment 3 is prepared from the following raw materials in percentage by weight:

[0034] Quartz 31.0%, feldspar 31.5.0%, alumina 3.0%, titanium dioxide 0.5%, boric acid 24.0%, limestone 1.0%, calcined talc 1.5%, lithium carbonate 4.5%, sodium carbonate 3.0%.

[0035] Mix all batch materials evenly, melt in a frit furnace at 1350-1360°C, and then water-quench the frit. Then, the frit is ground in a ball mill at room temperature with water as the medium to make a glaze slurry, and the fineness of the glaze slurry is controlled to be below 10.0 μm, accounting for 82.0-84.0%.

[0036] The prepared glaze slurry is applied to the bisque-fired high-grade bone china biscuit and fired at a temperature of 1110-1160° C. to obtain high-quality bone china products. The enamel surface of the product is delicate, smooth, smooth and glossy. At the same time, it has been proved by experiments that the content of l...

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Abstract

The invention relates to a ceramic glaze, particularly a lead free fritted glaze for a bone China with high acid resistance and alkali resistance to produce the lead free bone China products with the high quality. The lead free fritted glaze with the high acid resistance and alkali resistance has the components by weight: 58.0-66.0% of SiO2, 10.0-15.0% of Al2O3, 0.0-1.0% of TiO2, 0.5-2.0% of CaO, 0.0-1.0% of MgO, 2.0-6.0% of K2O, 2.0-6.0% of Na2O2, 2.0-6.0% of Li2O2 and 15.0-25.0% of B2O3. The lead free fritted glaze with the acid resistance and alkali resistance does not contain the metal components of lead, cadmium, zinc, barium and the like, adds with a certain alkali metal oxide, TiO2 and boracic acid with simple composition, scientific and reasonable application. The glaze has good application adaptability and is especially for the excessive furnace temperature. The burned finished ceramic has smooth glaze and good gloss. The glaze has good corrosion resistance and has high adaptability to the decal paper. The glaze is especially for the tableware washer due to high mechanical strength and thermal shock stability.

Description

technical field [0001] The invention relates to a ceramic glaze, in particular to a high acid and alkali resistant lead-free frit glaze for bone china used for producing high-quality lead-free bone china products. technical background [0002] Bone China is a world-recognized high-grade porcelain. For a long time, lead-containing frit glazes have been used in the production of bone china glazes. This is because lead-containing glazes have the characteristics of easy melting, good fluidity, small thermal expansion coefficient, good thermal shock stability, and high mechanical strength. Heavy metal elements such as lead are fired through a certain process, which can make the ceramic surface bright and clear with clear lines. However, ceramic products are inevitably corroded by acid and alkali during people's daily use, which leads to the overflow of trace heavy metal elements such as lead. However, lead is extremely harmful to the human body. The national standard GB 12651-2...

Claims

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Application Information

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IPC IPC(8): C04B41/86
Inventor 张垠
Owner 张垠
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