SU908774A1 - Ceramic composition - Google Patents

Description

(CERAMIC MASS

The invention relates to the building materials industry, primarily to the composition of masses for the preparation of facing ceramic tiles. Known ceramic mass for the production of facing tiles PJ comprising the following components, weightD: clay 20-26, kaolin 5-10, silica sand 15-20, chalk , tiled combat 3-17, nepheline syenite 35-38 and basalt 1-3. Closest to the offer is a ceramic mass TzJ, including, wt.%: Clay ZO-ch3, kaolin 5-8, bentonite 3-5, quartz sand 10-18, chamotte (tiled battle) 1017, chalk 2-, granite 15 -20. Tiles made from this ceramic mass have the following properties: Water absorption,% 15.3 Shrinkage,% 0.76 Sintering interval, degree 5 adhesion strength, MPa17.0 Mechanical strength, MPa 1.4 However, the known ceramic masses do not have a sufficiently high strength adhesion of ceramic crock with glaze and a narrow interval of sintering in the manufacture of tiles on high-speed flow-mechanized conveyor lines. The purpose of the invention is to increase the adhesion strength of the ceramic shard with glaze and extend the sintering interval. The goal is achieved by the fact that the ceramic mass, including clay, kaolin, bentonite, chalk and tiled combat, additionally contains dolomite and waste processing of rare-earth metals: quartz-feldspar waste with a content of 5) 02 50-70 weight. and vermiculite wastes with the following ratio of components, md: Kaolin Bentonite Tile combat Dolomite Quartz-feldspar wastes 10-15 Vermiculite wastes15-25 Quartz-feldspar wastes are a waste product in the processing of rare-earth metal ores containing,%: SiOg 50-70, 3 . Vermiculitic waste is also a waste product in the processing of ores of rare earth metals, containing 60-80 b of vermiculite. Vermiculite belongs to the class of micas. The use of quartz-feldspar wastes instead of quartz sand in ceramic maes allows to increase the amount of silica introduced, which contributes to the creation of a strong, dense shard of low shrinkage and also eliminates such a type of cracking as firing and cracking. by that

Clay

Kaolin

Bentonite

a piece of chalk

Dolomite

Tile battle

Quartz felts waste

Vermiculite

Granite

Sand

Table 1

 6 it 3

15 (Fireclay)

10 25

12.5

10 15 20

17 15 most enhance product quality. In addition, the presence of alkalis in quartz-polyspar waste contributes to the improvement of mass sintering. The use of vermiculite waste in the ceramic mass allows creating a solid dense structure with an extended sintering interval. Products made by the following technology. The components are ground in a ball mill to a residue on a sieve of OB-2%. The resulting slurry is dehydrated. From press powder with a moisture content of 6%, tiles of 150 are pressed. 150-p, 5 with a pressing pressure of 25 MPa. The samples are dried in a radiation drier with, burned on a high-speed in-line mechanized conveyor line for 17 min. After the first firing, the samples are coated with boron-zirconium glaze, the TCLE value of which varies between t, 96-5, 10 degrees. The second calcination is carried out for 27 minutes. In tab. 1 shows the compositions of the experimental masses; in tab. 2 - properties of products based on them.

Claims (2)

The proposed Products from the proposed compositions of the masses are distinguished by an increased range of sintering and an increased strength of the ceramics lacquer with glaze at high other physical and mechanical parameters. Use as quartz soda and mica-containing components of waste products of enrichment of ores of rare-earth metals is economically viable and advantageous, contributes to the expansion of the raw material base of the building materials industry with high quality products and their increased physical and mechanical properties. Claims Ceramic mass for the manufacture of facing tiles on high-speed flow-mechanized conveyor lines, including clay, kaolin, bentonite, chalk, and tile combat, such that. Table 2 In order to increase the adhesion strength of the ceramic shard with glaze and extend the sintering interval, it additionally contains dolomite and waste processing of rare-earth metal ores: quartz-polyurethane waste with a Si02 content by weight. and vermiculite waste in the following ratio of components, wt.%: Clay 20-25 Kaolin 20-25 Bentonite2-5 Mel2-5 Tile combat 10-12 Dolomit10-12 Quartz-feldspar waste 10-15 Vermiculite waste15-25 Sources of information taken into account during examination 1. The author's certificate of the USSR, f, cl. On B 33/00, 1976. 2. Authors certificate of the USSR 717006, cl. From 0 to 33/00, 1977