High-hardness wollastonite glaze slip and preparation method thereof

A wollastonite and high-hardness technology is applied in the field of high-hardness wollastonite glaze slurry and its preparation, which can solve the problem that the glaze hardness cannot achieve a satisfactory effect, and achieve the improvement of scratching, fine glaze, The effect of improving mechanical strength

Inactive Publication Date: 2015-06-10
ZHONGTAO SANITARY WARO MFG CO LTD OF TANGSHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing hardness of glazes for sanitary ceramics cannot achieve satisfactory results

Method used

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  • High-hardness wollastonite glaze slip and preparation method thereof
  • High-hardness wollastonite glaze slip and preparation method thereof
  • High-hardness wollastonite glaze slip and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] As shown in the formula list in Table 1, wollastonite is 5.83%, and its glaze mainly contains the following substances by weight: SiO 2 59.65%, Al 2 o 3 8.66%, Fe 2 o 3 0.15%, TiO 2 0.04%, CaO 9.48%, MgO 0.96%, K 2 O 3.18%, Na 2 O 1.37%, ZnO 3.47%, ZrO 2 6.72%, Lg.loss 5.99%, and the remaining 0.33% are impurities.

[0023] The preparation method is as follows: the raw materials are prepared according to the above components and the parts by weight of each component, according to ball: glaze: water = 1.5:4:3, wet ball milling for 12 hours, the glaze after ball milling requires a particle size of 10 microns and a passing rate of 70.1 %, 325 mesh sieve residue 0.15%, glaze slurry concentration 345g / 200ml, ring shrinkage 12.1%, melting length 58mm.

Embodiment 2

[0025] As shown in the formula sheet in Table 1, wollastonite is 9.71%, and its glaze mainly contains the following substances by weight: SiO 2 59.66%, Al 2 o 3 8.66%, Fe 2 o 3 0.18%, TiO 2 0.04%, CaO 10.15%, MgO 0.96%, K 2 O 3.18%, Na 2 O 1.37%, ZnO 3.47%, ZrO 2 6.72%, Lg.loss 5.30%, and the remaining 0.31% are impurities.

[0026] The preparation method is as follows: the raw materials are prepared according to the above-mentioned components and parts by weight of each component, according to ball: glaze: water = 1.5:4:3, wet ball milling for 12 hours, the glaze after ball milling requires a particle size of 10 microns and a passing rate of 72.85 %, 325 mesh sieve residue 0.10%, glaze slurry concentration 345g / 200ml, ring shrinkage 12.6%, melting length 70mm.

Embodiment 3

[0028] As shown in the formula sheet in Table 1, wollastonite is 13.68%, and its glaze mainly contains the following substances by weight: SiO 2 60.66%, Al 2 o 3 7.68%, Fe 2 o 3 0.22%, TiO 2 0.05%, CaO 10.85%, MgO 0.97%, K 2 O 3.18%, Na 2 O 1.37%, ZnO 3.47%, ZrO 2 6.66%, Lg.loss 4.61%, and the remaining 0.28% are impurities.

[0029] The preparation method is as follows: the raw materials are prepared according to the above components and parts by weight of each component, according to ball: glaze: water = 1.5:4:3, wet ball milling for 12 hours, the glaze after ball milling requires a particle size of 10 microns, and the pass rate is 70.56 %, 325 mesh sieve residue 0.15%, glaze slurry concentration 345g / 200ml, ring shrinkage 12.8%, melting length 75mm.

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Abstract

The invention discloses a formula of wollastonite glaze slip for preparing a high-strength glaze surface of sanitary ceramics. The wollastonite glaze slip is prepared from the following raw materials in parts by mass: 28.0-33.0 parts of potash feldsphar, 24.0-27.0 parts of quartz, 7.0-8.0 parts of calcite, 12.0-15.0 parts of wollastonite, 3.0-5.0 parts of kaolin, 2.0-3.5 parts of calcinedtalc, 3.0-4.0 parts of zinc oxide, 8.0-10.5 parts of zirconium silicate, 1.0-2.0 parts of aluminum oxide and 1.0-2.0 parts of low-temperature frits. A great deal of wollastonite is introduced to the glaze slip, the calcinedtalc is pre-sintered, air bubbles in the glaze slip are reduced through reducing crystal water and carbonates in the raw materials, and aggregation is caused under the action of generating the frits through partial melting by virtue of disordered arrangement of acicular crystals of wollastonite to form an interwoven structure; and the average Vickers hardness of a glaze surface is higher than 700, so that the mechanical strength of the glaze surface is greatly improved.

Description

technical field [0001] The invention relates to the technical field of sanitary ceramic glazes, in particular to a high-hardness wollastonite glaze slurry and a preparation method thereof. Background technique [0002] After the sanitary ceramics are fired at a high temperature in the kiln, the glaze becomes glassy. During the later stages of the production process, during the transportation, inspection, packaging and consumer use, due to factors such as improper product protection and improper human operation, it is easy to cause scratches on the product. The medium of scratches includes scratches between sharps and products, products and products, wood materials and other materials and products. No matter what kind of scratches will bring defects to products and consumers. From the perspective of active "safety", improving the hardness of the glaze is an effective way to reduce defects. None of the existing glaze hardnesses for sanitary ceramics can achieve satisfactory r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/86
Inventor 夏剑石傅文龙王文东
Owner ZHONGTAO SANITARY WARO MFG CO LTD OF TANGSHAN
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