SU802237A1 - Charge for making ceramic articles - Google Patents

Description

(54) The CHARGE PREPARATION FOR THE MANUFACTURE OF CERAMIC PRODUCTS of the sha particles of refractory oxides, involves them and melts, combines the grains of the components into a single monolith. The simultaneous introduction of bentonite and the presence of refractory clay in the mixture create special conditions in a ceramic shard when calcining the mullite phase, which, together with solidified melt, rich in alumina and silica, improves the structure of the shard: it increases its density, reduces frost, and absorbs frost, reduces frost, and absorbs frost, reduces the density of the shard; Name of raw materials

Refractory deposits of the Gorodok deposit.

Coarse waste fiberglass Polotsk fiberglass plant

Bentonite Oglanlinskogo field

The mixture is prepared as follows.

Clay, coarse fiberglass waste and bentonite are ground in a wet-grinding ball mill. Loading mills lead to 2 stages. At the T stage, coarse waste of fiberglass, bentonite and 10% clay from the mass of emaciated is loaded into the mill. Grinding is carried out at a humidity of 32-35%. In the 1G stage, the remaining amount of clay is loaded into the mill and water is added until the moisture content of the suspension is 40-45%. Grinding is carried out until the residue is on a sieve with a mesh No. 0063 (9428 holes / cm) GOST 3584-73 2-3% of the raw material. The suspension was dehydrated to a moisture content of 24-25%.

Fireclay is prepared by firing clay from the Gorodok deposit at a temperature of 900-950 ° C. 8

4.40 0.90 1.20 4, 50

0.30 16.50 6.60 - 0.30 9.50

0.24 2.43 - 5.11

1.12

5.50

With subsequent grinding of baked clay, as well as the skull of products in jaw, and then in hammer crushers to a grain size not exceeding 2 mm, and sieved through a sieve with mesh No. 2 (GOST 3826-66 clear side).

The chamotte is sieved and added in a predetermined ratio to the dry mass and mixed.

From the resulting mass is molded products by hand typing S gypsum forms at a humidity of 18-20%. The products are dried and calcined at a temperature of 960-980 ° C.

Specific compositions of the proposed mixture and their characteristics are given in table. 2. Name of oxides and their content, wt.9 SIOjTAI ObJFeaO ,, | Sao | MDO 1 1 V, oLppP 4 The raw material used is sintering refractory clay from the town of the Loevsky district of the Byelorussian SSR with a plasticity number of 24, chamotte from the same clay fraction up to 2 mm, coarse glass fiber waste from the Polotsk fiberglass plant, bentonite from the Oglanly deposit. The chemical composition of raw materials in wt.% Are given in table. 1. Table 1

40 20

table 2

42 39

45 38

38

sixteen

18

As can be seen from table 2, the density indicators for water absorption, as well as frost resistance, exceed that of the known charge.

The proposed mixture can be used for the production of both glazed and unglazed chamotte architectural, ext iernyh products.

Claims (2)

1. USSR author's certificate N 497265, cl. From 04 To 33/28, 1970. 2. Technical information VNIIESM. Ceramic and porcelain industry, NI, 1965, p. 13 (prototype).