SU1301815A1 - Ceramic mixture - Google Patents

Abstract

The invention relates to the field of building materials and can be used in the production of facade tiles. In order to increase strength and reduce water absorption, the ceramic mass contains the following components, wt%: argillite 50-60, cullet 20-30, wollastonite 10-20 and waste of electrochemical etching of aluminum parts with sodium aluminate 60-120 g / l 1-3. The physical and mechanical properties of the tiles are as follows: water absorption 5.0–6.8, flexural strength 24.9–33.1 MPa, moisture expansion 0.012–0.025%. 3 tab. with (I ate about 30

Description

113

. The invention relates to the production of building materials and can be applied mainly in the production of facade ceramic tiles on flow-automated conveyor lines of high-speed firing.

The purpose of the invention is to increase strength and reduce water absorption,

Waste electrochemical pickling of aluminum parts is alkaline runoff from electroplating plants with a sodium aluminate content of 60-120 g / l. The chemical composition of the waste of electrochemical etching of aluminum parts and cullet is given in Table. one.

Products are made from conventional slip technology. The components of the mass are ground without special electrolytes in a ball mill to a residual of 4% on a sieve No. 0063. From a slip with a humidity of 44% by dehydration in a spray dryer, a press powder with a moisture content of 3.5 to 4.5% is obtained. Ceramic tiles are molded on a press with a specific pressure of 25 MPa. The tiles are dried in a conveyor dryer to a residual moisture content of 0.2–0.3% for 20 minutes, if necessary, glazed and burned for 48 minutes in

Electrochemical waste

pickling

aluminum

parts

71.35

22.20 0.07

36.30 0.09

2.75 0.10

52.

slotted roller furnace flow-conveyor line; with a maximum firing temperature of 920-940 ° C.

The compositions of ceramic masses are given in table. 2

Physical and mechanical properties of facade tiles are given in Table. 3

Claims (1)

Invention Formula Ceramic mass, mainly for the manufacture of facade tiles, including clay component, broken glass, wollastonite and mineralizer, characterized in that, in order to increase strength and reduce water absorption, it contains argillite in its quality as a clay component, and electrochemical aluminum etching as a mineralizer parts with sodium aluminate content of 60-120 g / l in the following ratio of components, ae.%: Argillit50-60 Cullet 20-30 Wollastonit10-20 Electrochemical etching wastes are aluminum: for parts with an alumina content of 60-120 g / l 1-3 Table 1 0.39 0.17 0.22 0.12 76.11 0.17 0.15 0.36 0.18 62.76 7.78 3.60 - 15.32 Content, wt.%, In the composition Component I1111 .-l-i-l-l. -l-l -.-l. Argillit60 55 50 58 53 Cullet29 28 27 20 30 Wollastonit10 15 20 20 15 Waste electrochemical etching of aluminum parts with a content of sodium aluminate 60-120 g / l 12322 Table 3 Composition Properties111-11 1234-5 Known Slurry Flow according to Engler, s5444510 Water absorption,% 6.3 5.25.86.85.09.9.8 Tensile strength with bending, MPa24.9 32.6 30.8 27.633.1 16.7 Humid expansion,% ./0,025 0,017 0,015 0,012 0,017 0,020 Compiled by L. Gosteva Editor N. Bobkov Tehred A. Kravchuk Corrector S, Shekmar Order 1189/25 Circulation 588 Subscription VNISHI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 table 2