SU763280A1 - Raw mixture for producing facing material - Google Patents

Description

one

The invention relates to the field of building materials industry and can be used for the manufacture of vitreous products such as; slakositallovyh for internal and: 5 external facing.

The known raw material mixture for the manufacture of decorative-facing material obtained by sintering, including crushed glass- waste with a particle size of 75 µm and an aqueous solution of the binder in the following ratio of components, May. %: Glass Waste67

Water30 15

Binder3 {l.

Disadvantages of decorative facing material - N a wide range of temperatures, sintering and deformation of products during sintering.20

Also known is the raw mix for the manufacture of cladding material, comprising 20-40 wt.% Crushed glass and 60-80 wt.% From 25 ground or fine-grained quartz sand 2, the particle sizes of which are listed in the table. one.

The disadvantage of this raw mix is the formulation of compositions with per- 30

the content of finely divided fractions.

The known raw material mixture for the fabrication of facing material, including the breaking of bottle glass with a particle size of 40% and a glass-crystalline component E in the form of a frit of crystallizing glass with a particle size of S 2 mm - 40% and with a particle size of "0.16 mm 20% with the following chemical composition of the frit,%:

SiCi70

CaO23

AEgot 3

Fe.aO-j0,3

RiO1.7 W.

This raw material mixture is closest to the invention in its technical essence and the achieved result.

The disadvantages of this mixture are high sintering temperatures and complex technologies that require prior frit fabrication.

The purpose of the invention is to reduce the sintering temperature and simplify the technology by eliminating the pre-production operation of the glass-ceramic component. This goal is achieved by the fact that the raw material mixture for the manufacture of cladding material, including glass breakage and the glass-crystal component, contains 20-50 wt.% Basic blast furnace slag as the glass-crystalline component. 2. An example. The raw material mixture is prepared from bob glass with a specific surface of 2500, the main blast furnace slag with a specific surface of 2000, which is wetted with polyvinyl alcohol taken in an amount of 10 cm per 100 g of raw mixture. Granulometrically known. The mixture thus obtained is used to form samples at a pressure of 18 MPa, which are dried at 10 hours. The dried samples are sintered at 650-750 seconds with a drainage time of 15 minutes and a rise to a sintering temperature of 300 degrees / hour. The compositions of the raw mixtures and heat treatment modes and the properties of the samples are given in Table. 3. As can be seen from the table, the compositions of the proposed raw mix provide a lower sintering temperature as compared to the prototype composition, according to which the sintering temperature is. In addition, according to the invention, a by-product of metallurgical production is used instead of a specially made frit. Table of residual components of evo mixture (2)

0

The chemical composition of the bo glass and the main blast furnace slag for the proposed raw materials

Sulphates in terms of 50

Sulfates in terms of 5

blend tables

0.1-0.5

1,25-Ь28

Claims (3)

Invention Formula 1, Raw material mixture for the manufacture of veneering material, including Glass breaking and the glass-ceramic component, in order to reduce the sintering temperature and simplify the technology by eliminating the pre-production operation of the glass-ceramic component in the form of a frit, it contains as a glass-ceramic component 20 to 50 wt.% basic blast furnace slag . 2. A mixture according to claim 1, characterized in that the glass breakage has the following chemical composition, in wt.%: SiOa54-76 AE-OZ2-9 CaO6-8 MDO0,6-3,9 FeO0,1-1,4 Na-iO 15-15,5 T. A b l and c a 3 sulfates in terms of SO 0.1-0.5. 3. The mixture according to claim 1, characterized by the fact that the main blast furnace slag has the following chemical 0 composition, wt.%: Si024G, 8-42 DgaOz 4,61-4,63 CaO44.6-45.7 KDO6.37-6.47 five feO0,11-0,12 MpO 0,42-0,51 , 51-0.52 sulphate in relation to Si 25-1.28. 0 Sources of information taken into account in the examination 1. For France № 220879, cl. From 04 to 27/00, 06/21/74. 2. GDR patent 154986, 5 cl. From 04 to 35/14, 20.09.75. 3. The patent of Great Britain No. 1402757, cl. C 1 K, 08.13.75 (prototype).