A zirconium-free anorthite-based opacified glaze and preparation method thereof

An opaque glaze and anorthite technology, applied in the field of ceramic glaze, can solve problems such as damage to consumers' health, excessive radioactivity of products, easy yellowing of the glaze surface, etc., and achieve the advantages of promotion and application, low cost, and scope of application. wide effect

Active Publication Date: 2021-10-26
JINGDEZHEN CERAMIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tin oxide opacifying glaze has a good opacifying effect, but the disadvantage is that it is expensive and sensitive to atmosphere. If fired in a reducing atmosphere, a transparent glaze will be obtained.
TiO in Titanium Oxide Opaque Glaze 2 Crystallization makes the glaze surface have a good opacity effect, but it is mainly suitable for low-temperature enamel glazes with a firing temperature of 750-850°C. When the firing temperature is ≥1000°C, the glaze surface is prone to yellowing
Zirconium silicate opaque glaze is the most widely used opaque glaze at present. Its advantages are high whiteness and insensitivity to atmosphere. However, zirconium silicate will partially melt at high temperature, so its addition amount needs to reach 10-20wt%. to achieve the desired opacification effect, resulting in increased cost
In addition, the ore of zirconium silicate is often associated with Ra 226 、Th 232 、K 40 When a large amount of zirconium silicate is added to the glaze, the radioactivity of the product will exceed the standard, which will damage the health of consumers

Method used

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  • A zirconium-free anorthite-based opacified glaze and preparation method thereof
  • A zirconium-free anorthite-based opacified glaze and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. A non-zirconal calcium-free calcium-zirconal calcium-free glaze which has a raw material group being: 25 wt%, potassium longshine, 20 wt%, quartz 15Wt%, square solution 15 wt%, waterystone 5 wt %, Alumina 8 wt%, zinc oxide 3 wt%, burn talc 5 wt%, glass powder 10 wt%, nuclear agent 1 wt% (TiO 2 0.5 wt% + B 2 O 3 0.5 wt%). Among them, the raw material group of glass powder becomes SiO 2 65 wt%, Al 2 O 3 4 wt%, CAO 8WT%, MGO 3WT%, K 2 O 5WT%, NA 2 O 15 wt%.

[0023] 2. The preparation method of the above-free copium-free calcium long stone-based milk glaze, the steps are as follows:

[0024] (1) The ingredients are made according to the raw material of the above-mentioned emulsion glaze, and the water is hydrodynamic ball mill (according to the mass ratio material: the stone: water = 1: 2: 0.5) 8 h, the grain size D90 is 8.3 μm glaze;

[0025] (2) Adding water to adjust the specific gravity of the glaze pulverizer is 1.75g ​​ / cm 3 The flow rate is 25s / 100ml, and the glaz...

Embodiment 2

[0028] 1, the present embodiment has a zirconium calcium long stone-based milk glaze, its feedstock is: 8% by weight of clay, 30 wt%, quartz 15 wt%, square solution 20 wt%, alumina 8.5% by weight, zinc oxide 3 wt% 6Wt%, glass powder 9 wt%, nucleating agent P 2 O 5 0.5 wt%. Among them, the raw material group of glass powder becomes SiO 2 70 wt%, Al 2 O 3 3Wt%, CaO 8Wt%, MgO2WT%, K 2 O 4WT%, NA 2 O 13 wt%.

[0029] 2. The preparation method of the above-free copium-free calcium long stone-based milk glaze, the steps are as follows:

[0030] (1) The ingredients were made according to the raw material of the above emulsion glaze, and the water was hydrodynamic ball mill (according to the mass ratio material: water stone: water = 1: 2: 0.5) 6 h, gave a grain diameter D90 of 9.5 μm;

[0031] (2) Adding water to adjust the specific gravity of the glaze pulp is 1.50g / cm 3 The flow rate is 20s / 100ml, and the glaze paste is applied to the surface of the green manner;

[0032] (3) Burnin...

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Abstract

The invention discloses a zirconium-free anorthite-based opacified glaze, which is composed of raw materials: clay 5-10wt%, potassium feldspar 0-10wt%, albite 20-40wt%, quartz 5-20wt%, calcite 10-25wt%, wollastonite 0-10wt%, aluminum oxide 8-15wt%, zinc oxide 1-10wt%, calcined talc 3-8wt%, glass powder 1-15wt%, nucleating agent 0.5-1.5wt%. In addition, a preparation method of the above-mentioned zirconium-free anorthite-based opaque glaze is also disclosed. In the present invention, by using low-cost raw materials and optimizing the formula system, flaky or massive anorthite crystals are precipitated inside the glaze layer, and combined with three-dimensional crystallization, thereby achieving a good glaze opacity effect and improving the glaze. The whiteness and hardness of the surface can effectively improve the product performance. The raw material of the invention does not contain radioactive elements and is harmless to the environment and the human body; and the opacity glaze has a wide application range and is favorable for popularization and application.

Description

Technical field [0001] The present invention relates to the field of ceramic glaze, and more particularly to a calcium long stone-crimp glaze and a preparation method thereof. Background technique [0002] In order to cover the adverse coloring and defects of the blank, enlarge the source of the feedstock, which has a good decorative effect, which is widely used in the surface of the building ceramic and sanitary ceramics. [0003] The emulsion mechanism of the emulsion is that when there is a second phase (or more phase) different from the nature of the base glass, the incident light will reflect, reflect and reflect on the interface of the glaze layer. Other phenomena, so that the glaze layer devies into the emulsion effect. Ceramic industries commonly used emulsion glaze are tin oxide emulsion glaze, titanium oxide vintures glaze and zirconium silicate. The tin oxide cream has a good emulsion effect, but the disadvantage is cost high and is sensitive to the atmosphere, such as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C8/00C03C3/087C04B41/86C03C6/04
CPCC03C1/00C03C3/087C03C8/00C03C2205/02C04B41/5022C04B41/86C04B41/4539
Inventor 王少华汪永清李小女汪超张小珍常启兵
Owner JINGDEZHEN CERAMIC UNIV
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