SU1726439A1 - Ceramic body - Google Patents

Abstract

The invention relates to the building materials industry, mainly for the production of facade and facing ceramic tiles. The ceramic stock contains the following components. %: clay 15-45; sand 11-25; cullet 10-30; cyclone dust resulting from the drying of clay in the production of expanded clay at temperatures not higher than 300 ° C, 0-50. Glass breakage and clay are ground in a ball mill, after which all components of the mixture are sieved through a sieve and fed to a mixer, where, simultaneously with mixing, they are shut off with water in an amount of 7-8% by weight of the dry mixture. The finished mixture is fed into the hopper installed above the press, the tile is pressed. After pressing, the raw passes through a roller kiln drying and firing. Next, the shard is cooled on an open conveyor. After firing and cooling, the shard undergoes hot firing (glazing). Characteristic of ceramic tiles: mechanical strength of raw material 1.1-1.25 MPa; flexural strength 10.0-17.0 MPa; water absorption 5.4-8.9%; shrinkage 2.0-3.3%; firing temperature 950-1030 ° C. 1 tab.

Description

The invention relates to the building materials industry and can be used to obtain facade and cladding ceramic plates.

Ceramic mass is known, including, in wt.%:

Clay50-60

Quartz sand 0.1-10

Cullet15-30

Lepidolite

concentrate 5-30

However, the raw material of a known ceramic mass has low mechanical strength.

The closest technical solution to the present invention is a ceramic mass, comprising, wt.%:

Clay Wurmakassinsk

Clay Wurmakassinsk

burned

Tile fight

Broken glass

Liquid glass over 100%

Soda ash over 100% 0.2

The famous ceramic mass has not only low mechanical strength of the raw material obtained from it, but also high water absorption of the tile obtained from it,

70

14

6

ten

0.1

h

about

Ј

SA Oh

which prevents the use of such tiles for cladding the facade of buildings and structures.

The purpose of the invention is to increase the mechanical strength of the raw material and reduce water absorption. The composition of the ceramic mass, physico-chemical and technological properties are presented in Table. one.

The manufacture of ceramic plates is carried out according to the following technology.

Glass breakage and clay are ground in a ball mill, after which all components of the mixture are sieved through a sieve and fed to a mixer, where, simultaneously with mixing, they are shut off with water in an amount of 7-8% by weight of the dry mixture. The mixture is fed into the hopper installed above the press. The tile is pressed. After pressing, the raw passes through a roller kiln drying and firing. Next, the shard is cooled on an open conveyor. After firing and cooling, the shard undergoes hot firing (glazing).

Compared with the known use of cyclone dust, annealed at a temperature not higher than 300 ° C. allows to increase the mechanical strength of the raw material and reduce water absorption.

Claims (1)

Invention Formula Ceramic mass, including clay, sand, cullet, dehydrated clayey ash, characterized in that, in order to increase the mechanical strength of the raw material and reduce water absorption, it contains as a dehydrated clay otstogel a cyclone dust of claydite production, formed when the clay is dried at a temperature of above 300 ° C, in the following ratio, wt.%: Clay15-45 Sand 11-25 Cullet 10-30 The indicated cyclone dust10-50