SU581097A1 - Opacified glass - Google Patents

Description

one

The invention relates to glazed glass compositions and can be used in the glass industry for the production of finishing building materials.

Opal glass is known, including

402, AP205, B20z, Co (0, MgO,

in the following amounts, wt.%: 55.76, APjO 1.5-12, 82030-14, CaO 4.7-20, Mg O 0-15, O 1-18 fll.

The closest in technical terms to the technical result achieved by the invention is a glass of the following composition, weight. 65-8О, CaO 15-30, Mg О - О, 5-3,0, АР20з, 5, WOjO -0,5-2,0 f. This glass is suppressed when it is being worked out; it can be used to make a transparent white and colored building materials.

The disadvantage of this glass is the high cooking temperature (1580–1600 ° C), and it drastically shortens the inter-repair company of the furnace, l, respectively} 1o, increases the cost of iron from. glass

The purpose of the invention is to reduce the cooking temperature.

This is achieved by the fact that glass, including $ iO, CaO, MgO, contains these components in the following amounts, wt.%.

0i02

5О-63

22-33 CaO

13-21

MYO AGGO,

1-30

0.5-2.0

N "20

moreover, the ratio Cao / Mg About 1,4-1,5

Such peeled glass can be colored in bulk with one of the following B oxide: Ca (0, N40, MnO2 iiCr2Oj, Yi02.

The dye oxide is contained in the glass in an amount of 0.5-3.0 weight. %;

The use of cheap raw materials for cooking glass - dolomite leads to a significant decrease in the cost of glass. By changing the content of A 0, N and O, it is possible to obtain transparent, opalescent or wrinkled glass. These glasses, especially those that are jammed, crystallize well from the surface without crystallization catalyst at

heat treatment about lOOO-llDO С The growth rate of the crystalline phase - OD-OD 5 mm / min.

The introduction of dyeing oxides of iron, cobalt, nickel, chromium, maj ganz, titanium, etc. into the glass separately and in a mixture makes it possible to obtain colored transparent, opalescent, and jammed glass or sitalls.

Specific compositions stykol are given in table. one.

These compounds are varied at 1530-1550 C, Production is performed at 130 O-1350. In this case, the compositions are made silenced without additional heat treatment. The viscosity of the glass at a cooking temperature of about 50-60 poise, at a temperature of production 10O-150 poise. Glass melting is carried out in bath furnaces, generation is carried out on rolling machines or presses.

The described compositions are suitable for the production of jammed glass, glass-ceramic materials, decorative chips and pigments.

In tab. 2 shows the physico-mechanical properties of glass and glass.

Table 1

Oxides

52 54

55.5

5O 33 13

32 23

28

15

14 21

2 2

1 0.5

Mmo,

CrO2 NiO

Cao

Formulations weight. %

658

61

5960

63

2622

2523

22 22

314

1314

13 13

32

eleven

one

eleven

0.51

0.5 1

1.5

0.5

Properties

Specific weight, g / cm

Flexural strength, kg / cm

Coefficient of thermal expansion, 1 / degree 10

The glass transition temperature, With the softening temperature, With

Chemical resistance

Claims (2)

Invention Formula Glass Jam. including QiOyj CaO, MgO, AKjO, Moi.jO, this is due to the fact that, in order to lower the cooking temperature, it contains the indicated components in sledz / second quantities, weight. % iO, 50-63 CaO 22-33 Table 2 Stepskistalla indicators 2b 2.5 6OO 1300 68 70 70O 73O MJO13-21 NatO0,5-2 moreover, the ratio of CaCyMgO 1.4-1.5 Sources of information taken into account during the examination: 40 1. Patent of England No. 1254260, yl. With 1 M, publ. 1971. 2. Copyright certificate № 459437, | Ш. From 03 On 3/04, 1973.