SU1291579A1 - Porcelain mixture - Google Patents

Abstract

The invention relates to the manufacture of porcelain products and can be used in the manufacture of ceramic products. In order to increase the heat resistance and mechanical strength of the porcelain, the mass contains the following components, wt%: refractory clay 8-12, light fusible clay 8-12, kaolite 28-30, pegmatite 22-25, quartz sand 20-21 and porcelain pitting 5-7 . Physico-mechanical. The following product indicators are as follows: water absorption 0.1-0.2%, flexural strength 85-88 MPa, thermal resistance more than 10 heat changes. 2 tab. with S SP C

Description

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The invention relates to the manufacture of porcelain products and can be used in the manufacture of sanitary ceramics from porcelain.

The aim of the invention is to increase the heat resistance and mechanical strength.

Foundry porcelain mass is prepared by separate grinding of non-plastic materials (quartz sand, pegmatite, porcelain bo) in ball mills and their subsequent mixing with plastic materials previously liquefied in propeller mixers (refractory and low-melting clays and kaolin). Electrolytes are added to the mass by weight of dry matter,%: soda ash 0.1; soluble glass 0.1-0.13. Grinding is carried out until the residue on the 006 sieve is 1-2%. Products are cast in plaster molds.

After casting, the semi-finished product goes to the basement and then to the drying. The assembly is carried out directly in the workshop on the racks. Drying is carried out in a tunnel dryer. At the initial temperature of the heat carrier AO-3Z C and the final temperature is 90-100 C. The drying time is 24-30 hours. The dried semi-finished product is subjected to kerosene control and glazing.

Transparent icing is used to glaze the product. Glazing is performed by spraying and dipping. The density of the glaze when spraying 1.68-1.7 g / cm, while dipping 1.56-1.57 g / cm

Firing products are carried out in tunnel kilns at 1190-1220 ° C.

Table 1 shows the specific compositions of porcelain masses; in table 2 - the properties of the samples.

Firing temperature, С

Slurry humidity,%

1190-1220 1190-1220 1190-1220 3231.5 32

92

Claims (1)

Invention Formula Porcelain mass, mainly for pouring sanitary ceramic products, including refractory and low-melting clay, kaolin, pegmatite, quartz sand, porcelain pitting, characterized in that, in order to improve heat resistance and mechanical strength, it contains these components in the following ratio, wt.%: Clay ogneu five 0 porn Clay fusible Kaolin Pegmatite Quartz sand China bout 8-12 8-12 28-30 22-25 20-21 5-7 Table 1 five 0 Fusible clay Kaolin Pegmatite Quartz sand 12 28 22 21 11.5 29.5 24.5 20.5 eight thirty 25 20 Porcelain 45 fight Thickening coefficient Shrinkage,%: air common Water absorption,% Flexural strength of baked samples, MPa Resistance to pricing (thermal resistance of products), heat changes Compiled by L.Gosteva Editor N.Gunko Tehred A.Kravchuk . Order 202/28 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 2.1. 3.0 12.0 0.2 88 ten ten Corrector C, Cherni