SU1361128A1 - Raw mixture for producing ceramic material - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to compositions of raw materials and can be used in the industrial construction materials. The aim of the invention is to reduce the water absorption of the ceramic material. Cfie mixture contains, in May.%: Phosphorite 10-24; sodium fluoride or sodium silicofluoride 1-5; aluminosilicate - the rest. Body absorption of a ceramic material is 7.5-9.8%. 1 table. With O5 and 00

Description

The invention relates to compositions of fv mixtures and can be used in the building materials industry.

The purpose of the invention is to reduce the water absorption of the ceramic material. The method of preparation of the mixture. A weighted amount of pre-milled to a grinding fineness of less than 0.5 mm of the components of the mixture is thoroughly mixed, in a ball mill, the resulting mixture is moistened to 6-7%. 30 MPa. The products are burned in a tunnel or muffle furnace for 1 hour.

Example. All components of the raw mix, previously dried to a residual moisture content of not more than 1-2%, are ground to complete passage through a 0.5 sieve. After that, clay, phosphorite and sodium fluoride are mixed in a ball mill. The resulting mixture is moistened to 7% and passed for better averaging 2 times through No. 1 sieve. From the press powder obtained, tile (tablet) samples of 7.5x5 mm in size are molded at a pressure of 20 MPa. The samples are burned at 850 C. The calcined samples are tested for water absorption by boiling for 1 hour,

The preparation of ceramics on the basis of the proposed SF mixture is tabulated, the quality of phosphorus-containing ceramics is estimated according to GOST. When the ratio of the components of the composition of the raw mixture is higher than the upper

100

100

80 20

five

0

From the bottom of the range, phosphorus-containing ceramics do not satisfy the quality of a ceramic product - tile and have a higher water absorption - more than 10% (examples 5, 9, 10 and 14).

Thus, the proposed state of the raw material mixture for the manufacture of phosphorus-containing ceramics provides, in comparison, with the known preparation. products c. low water absorption at a low firing temperature of the material. This provides an increase in the operational characteristics of the material: a decrease in the firing temperature leads to significant energy savings, since low water absorption is achieved at 850 s instead of 1050 ° C, high consumption of natural aluminosilicate leads to cheaper phosphorus-containing ceramics.

Claims (1)

25 claims A mixture for the manufacture of a ceramic material, including aluminosilicate, phosphorite and an additive, characterized in that, in order to reduce the water absorption of ceramics, it contains sodium fluoride or sodium fluorosilicate as an additive in the following ratio, wt.%: Phosphorit10-24 Sodium fluoride or sodium silicofluoride1-5 Aluminosilicate Else 79.5 79 20 20 0.5 77 75 74 86 20 20 20 9 Temperature / Curing, s850 1000 850 1000 850 850 850 850 850 850 Water absorption, Dissolution. at boiling 15 Ponento content, wt.% Composition: “Ipomossiligat kaolin 55 85 80 83 10 15 15 Teksraturg roasting, with Vodpplot,% 850-850 850 850 850 850 850 850 850 850 850 850 850 9.8 9.6 7.5 10.8 9.5 9.7 9.8 9, 2 J5.8 8.8 9.4 9.0 9.6 Table continuation 12.8 12 12, A. 9.8 9.6 9.6 10.8 10.9 Vopbelenie Table continuation 18 nineteen 20, 21 22 23 79 20 - 75 80 85 75, 80 85 77 75 -. . - - id 20 20 24 17 10 24 t7 5 1 3 5