Zirconium-free spinel crystalline opaque glaze and manufacturing method

A technology of zirconium spinel and manufacturing method, which is applied in the field of ceramic glazes, can solve problems affecting the next generation, scarcity of resources, discoloration of glaze surfaces, etc., achieve wear resistance and scratch resistance, reduce production costs, and have high glaze hardness Effect

Inactive Publication Date: 2017-07-25
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main zirconium-containing natural raw material is zircon sand, and its main component is ZrSiO 4 (refractive index 1.94), in addition, it also contains a small amount of rare earth elements such as thorium, uranium and lead produced by the decay of these radioactive elements, which are often radioactive or toxic. Potential harm to human health, and may even affect the next generation, and its resources are becoming more and more scarce, and the price has risen sharply in recent years; titanium oxide is easy to precipitate from the melt as anatase when it is low in temperature, making the glaze surface discoloration

Method used

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  • Zirconium-free spinel crystalline opaque glaze and manufacturing method

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Experimental program
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Effect test

Embodiment 1

[0026] The zirconium-free spinel microcrystalline opacity glaze of the present embodiment is made up of the component of following weight fraction: Na 2 O: 1.79%; K 2 O: 2.68%; Al 2 o 3 : 23.21%; CaO: 3.57%; MgO: 8.93%; ZnO: 6.25%; 2 o 3 : 3.57%; SiO 2 : 50.00%.

[0027] Calculate the raw material formula used according to the above formula ratio, select 30.0 parts by weight of potassium feldspar, 5.1 parts by weight of albite, 4.4 parts of calcite, 8.1 parts by weight of quartz powder, 24.6 parts by weight of talc, 6.0 parts by weight of boric acid, 15.8 parts by weight of alumina and 6.0 parts by weight of calcined zinc oxide were used as raw materials, uniformly mixed, melted at 1480° C. for 60 minutes, then water quenched, and ball milled to obtain frit powder. Mill 100g of frit powder, 5g of kaolin, 0.3g of carboxymethyl cellulose, 0.3g of sodium tripolyphosphate, and 60ml of water ball, pass through a 250-mesh sieve, and sieve 0.1g, add water to adjust the density ...

Embodiment 2

[0031] The zirconium-free spinel microcrystalline opacity glaze of the present embodiment is made up of the component of following weight fraction: Na 2 O: 1%; K 2 O: 5%; Al 2 o 3 : 20%; CaO: 5%; MgO: 14%; ZnO: 5%; 2 o 3 : 6%; SiO 2 : 44%.

[0032] Calculate the raw material formula used according to the above formula ratio, select 38.9 parts by weight of potassium feldspar, 6.1 parts by weight of calcite, 31.5 parts by weight of talc, 9.5 parts by weight of boric acid, 9.5 parts by weight of aluminum oxide, and 4.5 parts by weight of calcined zinc oxide in the present embodiment. The raw materials are uniformly mixed, melted at 1480°C for 45 minutes, then quenched with water, and ball milled to obtain frit powder. Mill 100g of frit powder, 3g of kaolin, 0.5g of carboxymethyl cellulose, 0.5g of sodium tripolyphosphate, and 60ml of water ball, pass through a 250-mesh sieve, and sieve 0.1g, add water to adjust the density of the glaze slurry to 1.55 g when glazing / cm 3 ...

Embodiment 3

[0035] The zirconium-free spinel microcrystalline opacity glaze of the present embodiment is made up of the component of following weight fraction: Na 2 O: 3%; K 2 O: 3%; Al 2 o 3 : 22.5%; CaO: 4.5%; MgO: 11%; ZnO: 6.5%; 2 o 3 : 4%; SiO 2 : 45.5%.

[0036] Calculate the raw material formula used according to the above formula ratio, select 30.0 parts by weight potassium feldspar, 15.2 parts by weight albite, 5.3 parts by weight calcite, 26.7 parts by weight talc, 6.6 parts by weight boric acid, 10.1 parts by weight alumina, 6.1 parts by weight of calcined zinc oxide was used as raw material, uniformly mixed, melted at 1490° C. for 50 minutes, then quenched with water, and ball milled to obtain frit powder. Mill 100g of frit powder, 4g of kaolin, 0.35g of carboxymethyl cellulose, 0.35g of sodium tripolyphosphate, and 60ml of water ball, pass through a 250-mesh sieve, and sieve 0.1g, and add water to adjust the density of the glaze slurry to 1.50 g when glazing / cm 3 , s...

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Abstract

The invention discloses a zirconium-free spinel crystalline opaque glaze and a manufacturing method. The zirconium-free spinel crystalline opaque glaze comprises the following components in percentages by mass: 1-5% of Na2O, 1-5% of K2O, 20-25% of Al2O3, 2-6% of CaO, 7-15% of MgO, 5-8% of ZnO, 2-6% of B2O3, and the balance being SiO2. The glaze layer of the zirconium-free spinel crystalline opaque glaze precipitates (Mg,Zn)Al2O4 spinel crystal, the crystal grain size is 300-1000nm, the crystal has high scattering effects for visible light, in order to reach whiteness of common zirconium white fritted glaze, and improve hardness, wear resistance and mar-resistance of glaze. The product does not contain zircon sand and any radioactive elements, and has low cost and good milky white effects; the production technology is completely identical to the production technology of zirconium opaque fritted glaze, and the production cost is reduced.

Description

technical field [0001] The invention relates to the field of ceramic glazes, in particular to a zirconium-free spinel microcrystalline opaque glaze and a manufacturing method thereof. Background technique [0002] In order to cover the color and some defects of the green body and enrich the glaze decoration of ceramic products, opacity glaze is widely used in glaze decoration. Sand (7 on the Mohs scale) brought in by hard-soled shoes can scratch the glaze. If it is worn for a long time, the mottled tire background color can even be exposed, which will naturally affect the durable decorative effect. At present, opacifying glazes commonly used in architectural sanitary ceramics include tin oxide system opacifying glazes, zircon system opacifying glazes and titanium oxide system opacifying glazes. The tin oxide system opacifying glaze has good opacifying effect but is expensive and high in cost; the zircon system opacifying glaze, because the zirconium compound opacifying age...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/04C03C10/02C04B41/86
CPCC03C8/04C03C10/0045C03C2204/04C03C2205/02C04B41/5022C04B41/86C04B41/4539
Inventor 吕明蔡璟沛吴建青饶平根彭诚
Owner SOUTH CHINA UNIV OF TECH
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