SU1318575A1 - Charge for producing ceramic articles - Google Patents

Abstract

The invention relates to the production of special technical ceramics. The aim of the invention is to increase the apparent density, reduction of water absorption and porosity. For this, the mixture contains, wt%: clay refractory 40-42.5; alumina 16-17; titanium dioxide 31-33 ;; zirconia 6-10; calcium oxide 1.5-2.5. Ceramic products have an apparent density of (3.1–3.2) 10 kg / m; porosity is 0.86-1.05% and water absorption is 0.27-0.34%. 2 tab. : o X) sl: l

Description

1131

The invention relates to the production of special technical ceramics and can be used in the chemical industry as structural parts.

The purpose of the invention is to increase the apparent density, decrease water absorption and porosity.

The composition of the mixture are given in table.1, table 1

2.5

1.5

The properties of the composition of the mixture are given in table 2.

table 2

Temperature

cakes,

-WITH

1360 1360 1360

3,

3.15 3.2

1.05 0.97 0.86

40

41

42

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tlpoH-jH.-polygr. avenue, the city of Uzhg, st. Project, 4

8575

Continuation of table 2

Acid resistance,%, to n. HC1

99 99.4 99.2

J5

Water absorption,% 0,34 0,31 0,27

The mixture to obtain a ceramic material is prepared as follows.

Composite components, wt.%: Refractory clay 40.0; technical alumina 16.5; titanium dioxide 31.0; Zirconia 10.0; Calcium oxide is 2.5, mixed and moistened with a 10% solution of sulfide-alcohol bards to a moisture content of 8%. From the moistened mixture after it has been cured, samples are pressed under a pressure of 10 MPa for 24 hours. After drying the samples at 105–110 ° C, they are calcined in a silicon furnace at 1360 s. .

Refractory clay contains, wt%: SiOj, 58.71; A1, 0, 35.95; , 0.84; TiO 0.9; CaO 0.84; MgO 0.8; ppt 11.7.

Claims (1)

Invention Formula The mixture for the manufacture of ceramic. products, including refractory clay, alumina, titanium dioxide, a zircon-containing component, about the fact that, in order to increase the apparent density, reduce water trash and porosity, it contains zirconium dioxide as an additional component, and calcium oxide in the following ratio, wt.%: Clay refractory 40-42,5 Alumina16-17 Titanium dioxide 31-33 Zirconium dioxide. Calcium oxide 1.5-2.5