SU1486487A1 - Glaze composition - Google Patents

Description

The invention relates to the technology of silicates and can be used in the manufacture of ceramic

Glazed tiles mainly for interior cladding of buildings.

The aim of the invention is to reduce the duration of firing, increase gloss, temperature coefficient of linear expansion (TCLE) and cost reduction. For this, the glaze contains the following components, wt%: .δΐθ ₂ 36.5-40.3; A1 ₂ 0 ₃ 7.0-10.8 * B ^ 0 _e 19.0-23.0 · BaO 4.7-5.5; 0γ0ι8,59,5; CaO 4.5-5.5; ΖηΟ 5.0-6.5;

Tsa ^ ASH ^ 3, 5-4, 5; Ka ₂ 0 2.0-3.5. Glaze firing duration 18: min. The glaze has a gloss of 75-80%, TCLE (4652)> 1 O " ⁷ degrees ^-1 . Table 2.

with

The invention relates to the technology of silicates and can be used in the manufacture of ceramic glazed tiles mainly for the inner lining of buildings.

The purpose of the invention is to reduce the duration of firing, increase gloss, temperature coefficient of linear expansion, cost reduction.

The composition and properties of the proposed glaze are given in table. I and 2 respectively.

To obtain a glaze, quartz sand, zircon concentrate, zinc oxide, boric acid, kaolin, chalk, soda, barium carbonate, cryolite are used.

The content of ingredients in the proposed glaze has the following limits, wt.%:

/

Quartz sand 15.0-20.6

Zircon

concentrate

Zinc oxide

Boric acid

Kaolin

a piece of chalk

Soda ·

calcined barium carbonate cryolite

Cooking 'pre,

9.8- 1 2,0 3,2-4,3

26.0-31.4 14.0-21.0

6.8-8.0

4.6- 6.9

4.7-5.5 2.6-3.6

Glaze glaze is as follows.

In accordance with the oxide composition, the raw materials are blended and the frit is boiled at 1300 ° C for 3.5 hours. The finished, faceted Frit is loaded into ball mills for grinding to a residue on a sieve 0056 0.070.1%. As a mill additive

enter kaolin, clay. Working plot8i „„ 1486487 A1

1486487

The glaze suspension content is 1, 58-1, 62 g / cm · ³ .

Glaze is applied to the product by watering or spraying. The consumption of glaze on one tile with a size of 150 * 150 * 5 mm is 16-20 g. Firing products is carried out at 850 ° C for 18 minutes. The temperature of the beginning of softening is 700 ⁶ С, the end is 720750 ° С. After firing, ceramic tiles with a white color are obtained, which have a high gloss, even spill, without tseka, pricks and other visible defects.

Claims (1)

Claim Glaze, including 510 _g , A1 ₂ 0 ₃ , B ₂ 0 ₃ , BaO, Ζγ0 ₇ , CaO, ΖηΟ, Ea ₃ A1P ₆ , characterized by the fact that, in order to reduce the duration of firing, increase the brightness, temperature coefficient of linear expansion and reduce the cost, it additionally contains Ia ^ O at a slightly lower ratio of components, May. 5ί0 i. 36.5-40.3 A1.0 7.0-10.8 B * 0 ₃ 19.0-23.0 WAO 4.7-5.5 Ζγ0 ₂ 8.5-9.5 Cao 4.5-5.5 ΖηΟ 5.0-6.5 Pa.A1G, 3.5-4.5 Ea ₂ 0 2.0-3.5 Table one Components Content, wt.% In the glaze composition one 2 3 four . Known by auth. St. № 1073198 8 ΐθ 2 36.5 38.0 40.0 40.0 37.69-40.24 A1 ^ 0 ₃ 10.8 9.5 7.5 7.0 3.5-4.48 B ₂ 0 ₃ 23.0 20.5 '19,0 23.0 24.8-26.46 WAO 4.7 5.0 . 5.5 4.7 3.00-4.5 ΖγΟ $ 8.5 9.0 • 9.5 8.5 7.92-10.1 Cao 4.5 5.0 5.5 4.5 3.04-4.26 ΖηΟ, 5.0 6.0 6.5 5.0 6.94-8.1 Νη, ΑΙΡ, 3.5 4.0 4.5 3.5 7.07-7.9 Ia ^ O 3.5 3.0 2.0 3.5 - table 2 Property Indicators The compositions one 2 3 four Known by auth. ' № 1073198 TCLE (20-400 ^th C) ">10" ^ degrees' ¹ 4.6 5.2 5.2 4.8 3.5-4.0 Optimum firing temperature, ° С 850 850 850 850 850-920 Roasting duration, min * 18 18 18 18 26 Heat resistance, ° С Above 1 75 Above 1 7 5 Above 175 Above 175 Build a glaze Gloss,% 77 80 80 75-80 after roasting 65 Whiteness, Ζ 84 88 86 86 86-88 The cost of raw materials for 1 charge, rub. t 331 328 337 345 412