SU1310375A1 - Unfritted glaze - Google Patents

Abstract

The invention relates to the production of majolica products. The aim of the invention is to expand the calcination range. For this, the nephritis g azure contains, in wt%: SiO 29.6-38.6; AlaO, 4.0-10.2; CaO 0.1-0.5; PbO 50.5-59.5; , - 0,3; 0.1-0.6; MgO 0.1-0.2; KjO 0.2-0.8. The proposed glaze has a firing interval of 890-1180 C. Table 2. coke

Description

113103752

The invention relates to the manufacture of products after primary firing of ceramic products and may be dipping or spraying. Plot- to be used in the manufacture of glaze l |, 3-li, 4 g / cm Ivolica products in the construction materials.

The aim of the invention is to extend the firing range,

Table 1 presents the specific

LIA is burned in electric furnaces, tunnel 5, furnaces at 890-1180 ° С

Invention Formula

Jade glazing including SiO, CaO, PHO Fej, 0,

compositions of jade glazes.

Jade glazing including SiO, CaO, PHO Fej, 0,

The properties of the nephritis glazes, MDO, f, Q, differ in the table 2.

The mixture composition of glaze, wt.%: Minium lead 50-58 Kaolin 5-14

Clay Voronovska 4-9 Quartz sand 20-28 Glaze is prepared by co-grinding the components in a ball mill

zach with the addition of 0.2% calcined

Noah to the residue on -sit 10000 holes / cm 0.1-0.2%. Glazing

Components

The content in the glaze, wt.%

IZIIIIZIljIlL

The temperature of the beginning of the cake 5 С

Firing interval, C

780 790 810 840 820 800 890 - 1 180

products after primary roasting - by dipping or spraying. The density of the glaze is l |, 3-li, 4 g / cm

LIA is burned in electric furnaces, tunnel kilns at 890-1180 ° С

Invention Formula

Jade glazing including SiO, CaO, PHO Fej, 0,

, MDO, f, Q, characterized by 5

so that, in order to extend the firing interval, it contains the indicated components in the following ratio, wt,%:

Sioz

Cao

Pbo

,

Na-jO

MDO

29.6-38r6 4 ,, 0-10,2 0.1-0.5

50.5-59.5

0.1-0.3 0.1-0.6 0.1-0.2

0.2-0.8

Table 1

Table

Knoslot resistance to HjSO,%

Content of free Pb, mg / cm

99.8 98.0 99.0 98.0 98.0 98.0

Compiled by T. Nikulnikova Editor L. Veselovska Tekhred L. Oleinik Proofreader A. Zimokosov

1863/23

Circulation 588 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Claims (2)

The invention relates to the production of majolica products. The aim of the invention is the expansion of the interval firing. For this, the non-grit glaze contains, wt.%: Si0 ₂ 29.6-38.6; A1 ₂ 0 _e 4.0-10.2; CaO 0.1-0.5; PO 50.5-59.5; Fe ₂ 0 ₂ 0, l0.3; Na ₂ O 0.1-0.6; MgO 0.1-0.2; K ₂ 0 0.2-0.8. The proposed glaze has a firing interval of 890-1180 C. 2 tab. The invention relates to the production of ceramic products and can be used in the manufacture of majolica products in the building materials industry. The aim of the invention is to extend the firing interval. Table 1 shows the specific formulations of ungritted glazes.