SU998402A1 - Ornamental glass - Google Patents

Description

(54) DECORATIVE GLASS

The invention relates to a composition of glasses capable of forming a dark red surface film without additional crystallization and intended for the production of decorative building tiles of decorative tiles.

Known composition of decorative glass, containing, wt.%: SIO. 6 $ 80; CaO 15-30; 0.5-2; MgO 0.53; 1-2,5, at least one component from the group N10, Cr.Oj ,, 0,01-1, 5 1.

This glass has a shmovidy) about coloring.

The closest is the composition of decorative glass, containing, in May.%:

53-58.79

SiOi 11-17, G Al-lO ,, 9.59-10.96 FeiO 5.43-10.112 CaO 2.412-3,

MgO 5.98-6.53 R ' 0 2.79-5.70 BgO-b which is characterized by a surface dark red film with a high gloss 2}.

A disadvantage of the known glass is the presence of B7.0 / and the need for heat treatment at 950-1000 ° C. In appearance, the original glass without heat treatment is black.

The purpose of the invention is to obtain an intermediate dark red film without additional heat treatment.

The goal is achieved by the fact that decorative glass including Slt),

10 A | r0.5,, CaO ,, HqO,,, contains the specified components in the following amounts, wt%;

SiOi

42,00-52,00 AtjO,

U, 25-20.50

15.50-21.00

FHO,

15

Cao

1.50-4.15 Hgp

1, 00-2.50

one,

3.85-8.35 CdO

20

Moreover, g 0.7-3.9

TO; §-LM5 0 13-2.6 Trachytes (2.0-70 wt.%) And andesites (15-65 wt.%) Or perlites (S-50 wt.%), Nepheline concentrate (50 -65 wt.%), Quartz-feldspar sand (20-50 wt.%) And in both cases Krivoy Rog red iron ore or metallurgical wastes (15-25 mas.%).

Glass is produced at 1300–1400 ° C by the method of pouring or pressing by a mechanized method. The products are annealed at 540-5BO C, completely excluding the high temperature (900-1200 C crystallization mode).

During the cooling process, the surface film is predominantly composed of hematite, which gives a dark red color, whereas in the bulk of the glass mass remains black.

The compositions of decorative glass (wt.%) Are given in table. 1, and their 152,0018,0019,, 801.35 247,5016,0017,54,011,35 352,0017,0018,952,802,0 452,0014,2515,504,052,50 544,0019,0019,004,152, 20 about 642,0020,5021,001,501,00

1120

1320 1150 1300 1100 1320 1160 1340 1120 1300 1100 1300

physico-chemical properties in the table. 2

Thus, the proposed formulations are characterized by elevated values, softening temperatures (HOO-IbO C), as well as water resistance (99.97-99, 98%) and acid resistance (98.36-99.77%),

The cost of 1 m square. Flow with a dark red film with mechanized molding will be 4-5 rubles. When organizing the production of such plates with a capacity of 100 thousand meters per year.

the estimated annual economic effect will exceed 250 thousand rubles,

table 2

98.46

99.98

99.87

98.77

99.97

99.85

98.36

99.98

99.87

99.97

98.47

99.86

99.87

99.98

38.47

99.98

98.90

99.85 6,251,603, 8,325,322,51,5 3,853,401,142,6 8,353,352,51,3 8,303,352,41,6 5,708,300,71.5

Claims (2)

1. USSR Author's Certificate No. 459437, cl. From 03 On 3/04, 1973. 2.Gvazov G.G. Synthesis and investigation of the properties of high-aluminum and iron-containing glass based on andesite. Author. Cand. dis. Tbilisi, 1971, p. 6.7.