Method for preparing polished crystal tile
A technique of polishing crystal bricks and brick surfaces, which is applied in the field of preparation of polished crystal bricks, can solve problems such as poor exhaust effect, narrow melting temperature, and many glazed bubbles, and achieve less bubbles, high transparency, and good glaze quality Effect
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[0013] The invention discloses a method for preparing polished crystal tiles, which comprises depositing a mixture of low-temperature frit and high-temperature frit on the surface of printed tiles fired at high temperature, and then undergoing low-temperature secondary firing and polishing to obtain products.
[0014] Preferably, the composition of the low temperature frit is: Al 2 o 3 5-7 parts, SiO 2 62~68 parts, CaO 2~6 parts, MgO 0~2 parts, K 2 O 3~6 parts, Na 2 O 2~5 parts, B 2 o 3 9-16 parts, 3-7 parts of BaO, the said parts are parts by mass, and its melting temperature is between 950-1050°C.
[0015] Preferably, the composition of the high-temperature frit is: Al 2 o 3 6-11 parts, SiO 2 54~64 parts, CaO 4~10 parts, K 2 O 1~4 parts, Na 2 O 1~3 parts, B 2 o 3 3-8 parts, MgO 0-2 parts, ZnO 4-10 parts, BaO 3-7 parts, the melting temperature is between 1000-1150 °C.
[0016] By using this specific low-temperature frit and high-temperature frit together, b...
Embodiment 1
[0024] Mix the 20-200 mesh low-temperature frit and high-temperature frit at a ratio of 100:10, pile them on the surface of the high-temperature fired printed bricks, the pile thickness is 4mm, fire at 950°C, and polish. Among them, the composition of the low-temperature frit is: Al 2 o 3 5 parts, SiO 2 62 parts, CaO 2 parts, K 2 O 6 parts, Na 2 O 3 parts, BaO 3 parts, B 2 o 3 15 parts; the composition of the high-temperature frit is: Al 2 o 3 6 parts, SiO 2 64 parts, CaO 8 parts, K 2 O 4 parts, Na 2 O 2 parts, B 2 o 3 4 parts, ZnO 4 parts, BaO 3 parts.
Embodiment 2
[0026] Mix the 20-120 mesh low-temperature frit and high-temperature frit at a ratio of 100:40, pile them on the surface of the high-temperature fired printed bricks, the pile thickness is 3.5mm, fire at 1000°C, and polish. Among them, the composition of the low-temperature frit is: Al 2 o 3 6 parts, SiO 2 68 parts, 4 parts of CaO, 1 part of MgO, K 2 O 5 parts, Na 2 O 4 parts, BaO 5 parts, B 2 o 3 10 parts; the composition of the high-temperature frit is: Al 2 o 3 9 parts, SiO 2 54 parts, CaO 6 parts, K 2 O 3 parts, Na 2 O 3 parts, B 2 o 3 3 parts, MgO 2 parts, ZnO 8 parts, BaO 7 parts.
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