SU507540A1 - Ceramic mass - Google Patents

Description

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The invention relates to the production of ceramic tiles for cladding facades of buildings in industrial and civil construction.

The known mass for the manufacture of facade tiles, containing clay and chamotte, obtained by firing to clay sintering with otgodayuschim materials / gami, and smooth, which requires the installation of additional equipment for forming, firing and grinding the briquette. In order to achieve the required water absorption of briquette tiles, they are baked at high (up to 13OO °) temperatures, which also leads to high energy costs and higher cost of the tiles. Also known is the mass for facade tiles, which includes 20-60% of low-melting clay and 4–80% of blast furnace slag, which significantly shrinks in drying and roasting, which contributes to the formation of cracks and the dimensionality of the tiles.

The purpose of the invention is to reduce shrinkage.

This is achieved by the fact that the mass contains semi-acidic clay, to the burning and main burning blast-furnace slag in the following

the ratio of these components, weight. Clay50-80

Slag 20-50.

The invention is illustrated by examples. Example 1. Clay half-tart red burning with 75 wt.%

Slag basic blast furnace 25 wt.%. The firing temperature of the tiles is 105 O - 106 O ° C, water absorption is 11.2%, the flexural strength is 2 O2, in kg / cm, the total shrinkage is 1.85%, the frost resistance is 35 cycles.

Example 2. Clay floor sour krasnogogusha with 7O wt.%

Slag primary blast,. Zoves.% Firing temperature ps-Hok-1080 C, water absorption-10.7%, shrinkage 1.8%, flexural strength-258.4 kg / cm, frost resistance not less than 35 cycles. Example 3. Clay half-krasnozhuscha with boios / ъ

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The temperature of the tiles is compressed, water resistance & 9.8%, shrinkage 1%, flexural strength of-278 kg / cm, moro-resistance not less than 35 cycles,

As a source of raw materials; Kut clay of the Lukosha deposit of the third category, in quality. & N ..- tyuy slag rubble or dust of slag gravel of the Novolipevrky metal plant-plant.

Products made by the following technology.

The original raw materials are popzhergayug combined .. legs TOHKONfy grind. Then the tiles are pressed from the powder with moisture 6-8% under pressure (10CU15O kg / cm2, dried to: humidity 1 3 3% and calcined at a temperature of 1050 ° C. 1100 ° C. When glazed tiles are produced, the tiles are baked twice. White - cj - these glazes completely mask the spao--, the color of the ceramic base, firmly with

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