Preparation method of low-radioactivity ceramic glaze and prepared ceramic glaze
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A ceramic glaze and low-radioactive technology, applied in the field of ceramic glaze, can solve the problems of decreased whiteness and hardness of the glaze surface, affecting the aesthetics and durability of sanitary ceramic products, difficult to remove, etc., to achieve improved hardness and whiteness, uniform Effect of crystallization and low radioactivity
Active Publication Date: 2021-08-17
HUIDA SANITARY WARE
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However, the zircon raw materials used in zirconium silicate contain radioactive elements, which makes radioactive impurities also exist in zirconium silicate, and the impurities are embedded in the crystal structure of zirconium silicate, making it difficult to remove
Therefore, in order to reduce the radioactivity of sanitary ceramics, it is necessary to reduce the amount of zirconium silicate. However, in general, reducing the amount of zirconium silicate will reduce the whiteness and hardness of the glaze of sanitary ceramic products, affecting the aesthetics and durability of sanitary ceramic products.
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Embodiment 1
[0043] A preparation method for low-radioactive ceramic glaze, specifically comprising the steps of:
[0044](1) Pre-grinding: In terms of parts by mass, take 10 parts of industrial zirconium silicate, and use 2-3mm alumina microcrystalline balls for ball milling for 30 minutes until the D10, D50, and D90 of zirconium silicate are 0.339 μm, 0.884 μm, and 1.931μm, to get zirconium silicate pre-grinding slurry;
[0045] (2) Primary grinding: without drying, the zirconium silicate pre-grinding slurry is directly mixed with 16 parts of potassium feldspar, 6 parts of albite, 30 parts of quartz, 3 parts of alumina, 13 parts of calcite, dolomite 6 parts, 7 parts of wollastonite and 3 parts of frit are mixed, after adding water, ball mill with high alumina ball until the slurry D10≤1.5μm, D50≤5μm, D90≤15μm, to obtain primary grinding slurry;
[0046] (3) Final grinding: add 2 parts of zinc oxide and 5 parts of kaolin to the primary grinding slurry, continue ball milling until D10, D5...
Embodiment 2
[0049] Compared with Example 1, the only difference in this example is that the zirconium silicate pre-grinding slurry D10, D50, and D90 are respectively 0.318 μm, 0.824 μm, and 1.644 μm, and the others are the same as in Example 1.
Embodiment 3
[0051] Compared with Example 1, the only difference in this example is that the zirconium silicate pre-grinding slurry D10, D50, and D90 are 0.394 μm, 0.961 μm, and 2.463 μm, respectively, and the others are the same as in Example 1.
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Abstract
The invention relates to the technical field of ceramic glaze, in particular to a preparation method of low-radioactivity ceramic glaze and the prepared ceramic glaze. The preparation method comprises the following steps: (1) pre-grinding: grinding industrial zirconium silicate until D10 is more than or equal to 0.3 mu m and less than or equal to 0.4 mu m, D50 is more than or equal to 0.8 mu m and less than or equal to 1 mu m, and D90 is less than or equal to 2.5 mu m to obtain zirconium silicate pre-ground slurry; (2) final grinding: directly mixing the zirconium silicate pre-ground slurry with potassium feldspar, albite, quartz, aluminum oxide, calcite, dolomite, wollastonite, frit, zinc oxide and kaolin without drying, adding water, and carrying out ball milling and sieving to obtain glaze slip; and (3) glazing and firing: glazing with the glaze slip, and calcining to obtain the product. The industrial zirconium silicate is subjected to pre-grinding treatment, the grain composition of the zirconium silicate is controlled, the grain size of the zirconium silicate is distributed within the wavelength range of visible light to the maximum extent, the dosage of the zirconium silicate is reduced on the premise that the hardness and whiteness of the ceramic glaze are guaranteed, and therefore the low radioactivity of the ceramic glaze is achieved.
Description
technical field [0001] The invention relates to the technical field of ceramic glazes, in particular to a method for preparing low-radioactive ceramic glazes and the prepared ceramic glazes. Background technique [0002] As an indispensable raw material in the production of sanitary ceramics, zirconium silicate plays an important role in whitening and hardening glazes for sanitary ceramics. However, the zircon raw material used in zirconium silicate contains radioactive elements, which makes radioactive impurities also exist in zirconium silicate, and the impurities are embedded in the crystal structure of zirconium silicate, making it difficult to remove. Therefore, to reduce the radioactivity of sanitary ceramics, it is necessary to reduce the amount of zirconium silicate. However, in general, reducing the amount of zirconium silicate will reduce the whiteness and hardness of the glazed surface of sanitary ceramic products, which will affect the aesthetics and durability o...
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