SU990732A1 - Ceramic composition for making tiles - Google Patents

Description

() CERAMIC MASS FOR MANUFACTURING The invention relates to the production of ceramic tiles for interior lining and can be used in the manufacture of products on flow-conveyor lines with slot kilns having a high-speed firing mode. Famous ceramic mass l for the manufacture of large-sized plates for interior cladding on pbc-but-conveyor lines, including the following components, weight: Nepheline concentrate 25 Veselovsky clay 39 Quartz sand23 Dolomite8 Tile slab5 The disadvantage of this mass is to obtain tiles with a low TCLE and reduced mechanical bending strength. Closest to the present invention is ceramic mass 12 for the production of tiles. FACING TILES comprising the following components, wt.%: Clay3 -35 Kaolin1 -15 Quartz sand 12-16 Silk tails 30-35 Dolomite5 A disadvantage of the known mass is the production of facing tiles with relatively high rates of water absorption, shrinkage and moisture expansion, as well as low indicators of mechanical strength and thermal coefficient of linear expansion. The purpose of the invention is to reduce water absorption, shrinkage and moisture expansion, increase mechanical strength and thermal coefficient of linear expansion. This goal is achieved due to the fact that the ceramic mass for the manufacture of tiles.

including clay, quartz sand, dolomite or chalk and alkali-containing component, contains as a last nepheline-aegirin and additionally tiled battles in the following ratio of components, weight L:

Clay35 0

Quartz sand 11-15 Dolomite or chalk 8-1 O Nepheline-aegirin waste 30-35

Tile fights Introduced nepheline-aegirin wastes have the following chemical composition, weight: Si0251.82; DesOZ 0.60, 02; FeO B ,; MpO 1.00; Mdo 1, + 7; CaO 3.01; 11.87; КЗО 0.85; H20 0.22.

The mass is prepared by the slip method in a ball mill. The residues are ground to a residue on a sieve of SHOW 0 ,, The final grinding of the mass is carried out to a residue on a sieve of SHOW 1–2%.

Drying of the slip mass is carried out in a spray dryer to a moisture content of 5-71.

Tiles are pressed on presses, accepted in production (KPKp-125,

KPU-160 and others.). The pressed tiles, the single layer, are dried for 8–10 minutes to a moisture content of not more than 0.5% in a dryer at 250–300 ° C, and then burned at 1000–1020 ° C for 1720 minutes in a slot furnace.

The compositions of the proposed masses are given in table. 1, and in table. 2 presents the properties of products from them.

Table 1

Water absorption,% It.l Humid expansion,% 0.02 Mechanical strength, kg / cm 212 Shrinkage, I0.8 Roasting temperature, ° С1000-1020 ТКЛРоС lO l / C10,2, 61,315-16 0,030,020,08 207218180. 1.00.61.7 1000-1020 1000-102010 0-1050 9.810, it8.36

As can be seen from the table. 2 all the properties of the tiles from the proposed mass is higher than from the known.

Claims (2)

1.Krasnousova L.S. and others. Production of large-sized tiles for interior cladding on conveyor flow lines. -. Works of the Institute NIIstroykeramika, M., 1979, with. 19-29. 2. Refective information VNII.S Ser. Ceramic industry, M., 1977, no. 1, s. 15-16.