Method for performing localized crystallization of zinc silicate on ceramic plane and preparing ceramic
A technology of zinc silicate and ceramics, which is applied in the field of zinc silicate positioning crystallization and preparation of ceramics, which can solve problems such as poor product stability and repeatability, difficult crystal distribution and quantity, and difficulties in commercial production, and achieve the solution of crystal sizes. , flexible and convenient crystallization, good crystallization effect
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[0027] (1) Preparation of crystalline glaze: Weigh the raw materials according to the following percentages by weight: feldspar 15-25%, quartz 5-10%, talc 5-10%, calcite 5-10%, kaolin 2-5%, oxidized 30-40% zinc, 10-20% glass powder, 1.5-2.5% iron red; put the weighed raw materials into a ball mill for grinding. When grinding, the ratio of material: ball: water is 1:1.5-2.5:0.6 ~1.2, grind until the fineness of the slurry is 0.1-0.2% after passing through a 300-mesh sieve, and the water content of the surface glaze slurry obtained after grinding is 45-50%, and set aside.
[0028] Under different viscosities, the speed of crystal growth is different. The growth of crystals is restricted by the viscosity of the melt, and the size of the viscosity directly binds the diffusion and migration of crystal-forming particles in the melt. Generally, the high temperature viscosity of crystalline glaze is small, the main reason is that Na 2 O and other flux content is high, while Al 2 o ...
Embodiment 1
[0040] A method for performing positional crystallization of zinc silicate on a ceramic plane and preparing ceramics, the method comprising the steps of:
[0041] (1) Preparation of crystalline glaze: Weigh the raw materials respectively according to the following percentages by weight: 15% feldspar, 10% quartz, 10% talc, 10% calcite, 5% kaolin, 30% zinc oxide, 18.5% glass powder, iron Red 1.5%; Put the weighed raw materials into a ball mill for grinding. When grinding, the ratio of material: ball: water is 1:1.5:0.6, and the fineness of the slurry is 0.1-0.2% after passing through a 300-mesh sieve. , the surface glaze slurry obtained after grinding has a water content of 45% to 50%, and is set aside.
[0042] (2) To make colored glaze, each raw material is weighed respectively according to the following percentages by weight: 90% of transparent feldspar glaze, 10% of wrapped red agent; the two raw materials are mixed and stirred evenly, and cross 100 sieves to prepare semi-fi...
Embodiment 2
[0049] A method for performing positional crystallization of zinc silicate on a ceramic plane and preparing ceramics, the method comprising the steps of:
[0050] (1) Preparation of crystalline glaze: Weigh raw materials respectively according to the following weight percentages: feldspar 22%, quartz 10%, talc 10%, calcite 10%, kaolin 4%, zinc oxide 32%, glass powder 10%, iron Red 2%; Put the weighed raw materials into a ball mill for grinding. When grinding, the ratio of material: ball: water is 1:1.8:0.8, and the fineness of the slurry is 0.1-0.2% after passing through a 300-mesh sieve. , the surface glaze slurry obtained after grinding has a water content of 45% to 50%, and is set aside.
[0051] (2) To make colored glaze, take each raw material respectively by the following weight percentages: transparent feldspar glaze 92%, wrapping red agent 8%; Mix and stir the two kinds of raw materials, cross 100 sieves and prepare semi-finished products; weigh again The flux of 10% ...
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