SU1325034A1 - Charge for making ceramic articles - Google Patents

Abstract

The invention relates to the manufacture of ceramic products, mainly insulators. In order to reduce the firing temperature while maintaining the strength and electrical insulation properties of the mixture, the following components are present, wt%: clay 23.4-25.5, kaolin 13.6-18.8, pegmatite 19-27.8, silica sand 10- 13.8, the cullet of the electrovacuum production system SiOj-AljOj-PbO-BaO-RjO 10-30 and the porcelain battle 3-4,1. The physicotechnical properties of ceramic products are as follows: the firing temperature is 1190-1230 ° C, the water absorption is 0.03-0.1%, apparent with a density of 2.33-2.34 g / cm, the mechanical strength under static bending is 96.8 -124.9 MPa, tgf 0.019-0.020, specific surface resistance (1.5-4, 3). Yu Ohm-see 2 tab. with (/)

Description

The invention relates to the manufacture of electrically insulating materials for the manufacture of low-voltage electrical installation products.

The aim of the invention is to reduce the firing temperature while maintaining the strength and electrical insulation properties.

Cullet of electrovacuum production. The formula of the SiO-A1 O-POBO-BaO-R, O system has the following chemical composition, wt%: LijO 0.25iO, 02; SiOj 61,70tO, 4; AljOj 3.55tO, 1; MgO 1.25t

low firing temperature 1150-1230 C,

In tab. 1 shows blend compositions for the manufacture of ceramic products.

In tab. 2 shows the physical and technical properties of ceramic products.

the invention

1 1 Ceramic products, mainly insulators, including clay, kaolin, pegma 10, 05; CaO 3,, 05; BaO 4.40 + 0.05; 5 tit, quartz sand and broken glass, PHO 5.2510.6; 6.3010.1; 8.40 characterized in that.

to, 2; Fj 0.6010.1; Sr 4.25tO, 8; 0.20 o, 05; Tio j 0,010,01.

The mixture is prepared by mixing the starting components in a given ratio according to the conventional technology in ceramic production, namely: the charge components are loaded into the porcelain drum in a specified ratio, where they are ground by the method of wet grinding with a ratio of material, balls and water equal to 1: 1: 1 until the residue on the sieve with the grid 006-1-2%. The resulting slurry is dried at 100-120 ° C, then r from press powder, 30 of which are pressed into pieces. Samples are fired in a silicon oven in the temperature range of 1,100-1,280 s. The purpose of reducing the firing temperature while maintaining its strength and electrical insulating properties, it contains 20 broken glass of electrovacuum production 25

the properties of the system SiO-A 0 -PbO-BaO-R-0 and additionally porcelain battle with the following ratio of components, May.%:

Clay23,4-25,5

Kaolin 13.6-18.8

Pegmatite19-27,8

Quartz sand 10-13.8 Glass breaking of the electrovacuum production system SiOj-Al Oj-PbO-BaO-R O 10-30 Farf (straight fight 3-4,1 I

Clay

Kaolin

Pegmatite

Quartz sand

China bout

Cullet of electrovacuum production system Zyu -ATSO -PiOBaO-RjO

low firing temperature 1150-1230 C,

In tab. 1 shows blend compositions for the manufacture of ceramic products.

In tab. 2 shows the physical and technical properties of ceramic products.

the invention

 5 tit, quartz sand and broken glass, characterized in that ,.

thirty

in order to reduce the firing temperature while retaining its strength and electrical insulating properties, it contains 20 cullet of electrovacuum production

five

the properties of the system SiO-A 0 -PbO-BaO-R-0 and additionally porcelain battle with the following ratio of components, May.%:

Clay23,4-25,5

Kaolin 13.6-18.8

Pegmatite19-27,8

Quartz sand 10-13.8 Glass breaking of the electrovacuum production system SiOj-Al Oj-PbO-BaO-R O 10-30 Farf (straight fight 3-4,1 I

Table 1

23.4 13.6 19.0 10.0 4.0

24.5 17.6 26.4 13.0 3.0

15.0

30.0

15.5

Seeming density, g / cm

Static bending mechanical strength

tg f, MPa

Specific surface I resistance, Ohm-cm

2.33

2.34

2.34

2.33

96.8 124.9 0.020 0.020

120,7122,3

0,0190,020

1.5-10 3.1-10 4.3-10 3,

Table 2

2.34

2.34

2.33

120,7122,3

0,0190,020

80-120 1.3-2.0

Claims (1)

Claim A mixture for the manufacture of ceramic products, mainly insulators, including clay, kaolin, pegmatite, quartz sand and cullet, characterized in that, in order to reduce the firing temperature while maintaining strength and electrical insulation properties, it contains a cullet of electrovacuum production of the SiO ₂ ~ A1 ₂ 0 system _3- PbO-BaO-R / and additionally porcelain battle in the following ratio of components, May.%: Clay Kaolin Pegmatite Quartz sand Electric cullet 23.4-25.5 13.6-18.8 19-27.8 10-13.8 vacuum production of the system SiOjA1 ₂ 0 ₃ -PbO-BaO-R ₂ O 10-30 Porcelain fight 3-4.1 I Table 1 Components The content of components, wt.% 1 2 3 4 Clay25.5 Kaolin 18.8 Pegmatitis27.8 Quartz sand 13.8 Porcelain fight4.1 Cullet Electrovacuum Production System SiO ₂ -Al / ₃ ~ PbOBaO-RjO 10.0 24.5 23,4 24.5 17.6 13.6 17.6 26.0 19.0 26,4 13.0 10.0 13.0 3.9 4.0 zo 15.0 30,0 15,5 Table 2 Properties Compositions 1 2 3 Famous Firing temperature ^ C 1230 1210 1190 1210 1320-1350 Water absorption,% 0.1 0,03 0.08 0,03 - The apparent density, g / cm ³ 2,33 2,34 2,34 2,33 - Mechanical strength under static bending 96.8 124.9 120.7 122.3 80-120 tg f, MPa 0,020 0,020 0.019 0,020 1.5-2.0 Surface resistivity, Ohm-cm 1.5-10 ⁿ 3.1 -10 ¹⁺ 4.3 · 10 " 3.2-10 ^ -