SU1599344A1 - Ceramic composition for producing facing tiles - Google Patents

Abstract

This invention relates to ceramic technology. In order to reduce the moisture expansion and increase the heat resistance of the tiles, the ceramic mass includes the following components, wt%: refractory clay 40-55

wollastonite 19-25

cullet 6-9

waste flotation concentration of ores containing rare metals based on feldspar, 20-26. The physical and mechanical properties of the tiles are as follows: shrinkage 0 / 7-1.1%, water absorption 11.6-12.1%, bending strength 23.4-25.8 MPa, heat resistance 170-180 ° C, moisture expansion 0, 03-0.038% 2 table.

Description

The invention relates to the ceramic industry, mainly facing tiles.

The aim of the invention is to reduce the moisture expansion and to increase the heat resistance of the tiles.

Clay glass is used in the ceramic mass — breaking window and bottle glass with an alkali content of 14–16% and alkaline by-product of rare metals, which is obtained after grinding the raw material, extracting rare components from it. They are white with glimpses of mica and resemble sand in appearance. The chemical composition is represented by the following oxides, wt.%: SiO ,. 74.22; A1, 0, 14.48; 0.32; CaO 0.37; MgO 0.31; 10.18, ppt 0.32.

The mineralogical composition of the alkali-containing by-product of rare metals is as follows, wt.%:

Quartz30-40

Feldspar 60-70

Mica1-3

The production of tiles is carried out according to the following technology.

The mixture is prepared by a wet method with joint grinding of all components to a residue on sieve No. 0063 2-6% and with a moisture content of the slip 48-55%. Tiles of 150 150 150–5 mm in size are pressed at a specific pressure of 12–15 Sha from a press-air system with a moisture content of 6–8%. Dried tiles to a residual moisture content of not more than 1% are burned at 1000-1020 ° C. After firing, the tile is glazed with glaze and fired at 930.

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i The compositions of ceramic masses for the manufacture of facing tiles are given in Table. one.

Physical and mechanical indicators of the tiles are given in table. 2. claims

Ceramic mass for the manufacture of facing tiles, including refractory clay, loftonite and with hecklobe, which means that, in order to reduce the moisture expansion and heat resistance of the tiles, it also contains waste flotation ores containing rare metals based on feldspar in the following ratio, wt.%:

High-melting clay Wollastonite Cullet Specified waste flotation concentration

Table 1

40-55

19-25

6-9

20-26

20

22

24

26

Claims (1)

Claim Ceramic material for the manufacture of cladding tiles, including refractory clay, WoDlastonite and cullet, characterized in that, in order to reduce the moisture expansion and increase the heat resistance of the tiles, it additionally contains waste flotation ore, containing rare metals based on feldspar in the following ratio components, wt.%: Refractory clay40-55 Wollastonite .19-25 Cullet 6-9 Specified flotation concentration waste 20-26 Table 1 Component The content of components, wt. X, in the composition Prototype 1 I ² 1 ³ I 4 Refractory clay 55 fifty 45 40 60 Wollastonite 19 21 23 25 35 Cullet Ore flotation processing wastes containing rare metals based on 6 7 8 9 5 feldspar ve 20 22 24 26 - table 2 Indicators Composition. 1 ² I ³ I prototype Shrinkage,% 1,1 1,0 0.9 0.7 1.0-1.2 Water absorption,% 11.8 11.6 11.7 12.1 15.8-16.8 Strength at bending, MPa 23.6 25.8 24.8 23,4 14.9 Heat resistance, ° C 170 180 170 170 140-150 Heat resistance heat exchange 10 12 eleven eleven 6 TKPR, xU ⁶ . ° C '* 7.30 7.40 7.45 7.60 9.65 Humidity expansion - rhenium,% 0,038 0,034 0,032 0,030 0.04