SU895945A1 - Glass - Google Patents

Description

(54) GLASS

one

FIELD OF THE INVENTION The present invention relates to high iron glasses used in the creation of facing materials.

Known composition of stone cast J, containing, wt.%:

SiOa45-60

Ge20s6-16

A iO 9-27

RO10-20

1-5

RZ.O

However, the material on the basis of this composition has a small decorative effect, has a dull dirty color and cannot be used decorative facing.

The closest in technical essence and the achieved effect is stetspo containing, wt.%

51-62

SiOjL 15-24

A12.0

5-10,5

CaO 2-4

1.5-3.5

MgO 7-14

This glass, designed to create facing materials, is characterized by a low tendency to surface crystallization and to create a decorative crystalline layer, heat treatment is required at relatively high (950 ° C temperatures.

The aim of the invention is to increase the propensity to surface

10 crystallization.

The goal is achieved by the fact that glass, including, Fe20, MgO, CaO,,, additionally contains FcO in the following ratio

IS components, wt.%

30-63

SiOo. 13.5-30

Al2.0a 9-16

Fe2.0a 4-20

MgO

20 0.2-2

CaO 0.3-2.4

0.3-6.5

Kjp 8-9

FeO In addition, in order to obtain a terracotta-golden color, the glass may additionally contain 0.20, 8 wt.% T102. The proposed glass has an increased tendency to surface crystallization with the formation of a decorative crystalline film directly in the process of production, which is achieved by the specified ratio f a + FsO to MDO. The nature of the crystalline film is examined on a DRON-, 5 pa Cu1C X-ray diffractometer. X-ray studies show mainly the presence of magnetite () and a small amount of gematite (ot), Electron-microscopic studies, performed by the method of platinum-carbon replicas from the material surface on an electronic microscope TESLA BS-242E. with an increase of 10,000 times, they show a fine-crystalline surface with a crystal size of 1 × 1 μm. The formation of a crystalline decorative film is promoted by the presence of magnesia, the presence of which lowers viscosity and increases the tendency to crystallization. In tab. 1 shows the composition of the proposed glass.

TU8 30 35

0.2

0.8 4 These compounds have the physicochemical properties shown in Table. 2. For the synthesis of glasses, known reagents can be used: salts, oxides, as well as industrial wastes. For example, to obtain a glass of the inventive composition, a mixture consisting of parts by weight can be used. of; phpopitite concentrate 16-77, red mud 20-37 and sand 30-54. Glass can be brewed in a bath, a pot or a crucible furnace at a temperature of the order of 1530-1570 ° C. Production of products is carried out using one of the methods of glass technology. Annealing products are at. This technology makes it possible to obtain a material with a decorative film directly in the process of molding products without additional heat treatment. Since surface crystallization occurs directly during the molding process, there is no need for expensive equipment for heat treatment and heat treatment itself, which entails a reduction in energy costs and a decrease in production space. reduction of technological time {process, simplification of production. Glass can be used as a cheap decorative material in construction and architecture, as well as in the making of decorative and artistic items (vases, pepelts, buttons, brooches, beads, and other items). Table 1

Claims (2)

Claim 1. Glass, including Si, Al ^ O ^, Fe ^ Oj, MgO, CaO, Ha ^ O, K ^ O, characterized in that, in order to increase the tendency to surface crystallization, it additionally contains FeO in the following ratio of components , weight.%: SiOa 30-63 ΑΙχΌ, 13.5-30 Fe ₂ 0 _a 9-16 MgO 4-20 Cao 0; 2-2.0 Na _a 0 0.3-2.4 K ₂ 0 0.3-6.5 FeO 8-9 2. Glass pop. 1, characterized by the fact that, in order to obtain a terracotta-golden color, it additionally contains 0.2-0.8 wt.% T <0 _2. ,