SU1740352A1 - Ceramic mass for facade plates manufacturing - Google Patents

Abstract

The invention relates to the construction materials industry. The proposed ceramic mass contains alkaline waste of rare metal ores on the basis of SI02 16-35, tiled combat 4-15; cullet 5-20; refractory clay rest. The components are ground by dry joint grinding to a residue on sieve No. 0063 5-20%. The tiles are pressed from the press powder with a moisture content of 6-8% at a pressure of 15-20 MPa. Samples are dried to a residual moisture content of not more than 1%, coated with glaze and calcined at 1333-1373 K. Product characteristics: water absorption 3.0-3.6%, mechanical bending strength 56.3-68.8 MPa, shrinkage 6.8 -8.0%. 2 tab.

Description

The invention relates to the building materials industry, namely to the composition of the masses for the production of facade tiles.

The composition of ceramic material for the manufacture of facing tiles, including refractory clay, wollastonite is known. cullet and flotation ore wastes containing rare metals based on feldspar.

The disadvantage is the relatively low mechanical strength and high water absorption.

The closest to the present invention is the composition of the ceramic mass for the manufacture of facing and facade tiles, containing, in wt.%: Clayey gravity waste from the enrichment of zirconylmenite ore 15–20, slab cuts 10–15 and ash of the light fraction 15–30.

The disadvantage of the known mass is low mechanical strength and high water absorption.

The purpose of the invention is to increase the mechanical strength and reduce water absorption.

This goal is achieved by the fact that the ceramic mass for the manufacture of facade tiles, including clay raw materials and tile combat, contains alkaline waste of rare metals based on SiOa and broken glass in the following ratio, wt.%:

Clay raw materials30-75

Alkaline

waste of rare ores

metals based on SiOs16-35

Cullet 5-20

Tile combat4-15

As a clay-raw material, refractory clay with a plasticity number of 12-16 is used.

The alkali by-product of rare metals is obtained after grinding the raw material and extracting rare-metals from it. It has a white color with glimpses of mica and looks like sand. Chemical% 1 b

The cue composition is represented by the following oxides, wt%: SIO2 74.22; 14.48, Rv20z 0.32; CaO 0.37; MDO 0.31; R20 10.18, ppt 0.32. Mineralogical composition, wt.%: Quartz 30-40; feldspar 60-70; mica 1-3.

The production of facade tiles is carried out according to the following technology: the mixtures are prepared by the dry method with joint grinding of all components to a residue on a sieve Ns 0063-5-20%. Tiles of 150 x x 150 x 7 mm in size are pressed at a specific pressure of 15–20 MPa from press powder with a moisture content of 6–8%. Dried tiles to a residual moisture content of not more than 1% are coated with glaze and calcined at 1060-1100 ° С,

The compositions of ceramic masses are given in table. 1, physico-mechanical characteristics of the tiles - in table. 2

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Claims (1)

Invention Formula Ceramic mass for the manufacture of facade tiles, including refractory clay, alkaline waste ores of rare metals based on SI02 and tiled combat, characterized in that, in order to increase mechanical strength and reduce water absorption, it also contains broken glass in the following ratio of components, wt.% : Silk-containing waste of ores of rare metals on the basis of SI0216-35 Tiled battle 4-15 Cullet 5-20 High brass clay Rest Table 1 table 2