SU1212993A1 - Aventurine glass - Google Patents

Description

eleven

The invention relates to compositions of aventurine glass, which can be used for the production of veneering building materials, as well as for the manufacture of decorative art products.

The purpose of the invention is to reduce the cooking temperature and increase the hardness.

The compositions of the proposed glass are given in table., And their properties in table 2.

For the production of glass, the following raw materials are used: Сl: ak of phosphorus production, and potassium dichromate J chrompeak, potash as the base materials.

Variate glass at a maximum temperature of 1350 ° C in a weakly oxidative or oxidizing environment. Heat treatment of the melt in order to achieve the aventurine effect.

I 200 ° (; for

212993

produced at 20-30 min.

The different color gamut of glasses is achieved by introducing dye oxides - 5 in the following ratio of ingredients, wt%:

Feo

MPO

Cu

1, 60-4.04 2.22-4.74 2.0-4.80

ten

20

From the glass of the proposed composition it is possible to develop facing materials and decorative and artistic products using all known methods of glass technology: continuous rolling, casting, pressing. In addition, the technology for preparing the proposed glass is characterized by the use of non-deficient raw materials, a decrease in temperature in the arches 5-1 by increasing the chemical resistance, 5 which is one of the most important characteristics of facing and decorative art materials.

Cooking temperature, ° С 1350 1350 1350 1350 1350 1350 1350 1350 1350 Heat treatment temperature / С 1200 1200 1200 1200 1200 1200 1200 1200 1200 Density, g / cm 2.85 2.88 2.89 2.91 2.93 2.94 2.94 2.90 2.92 Acid Resistance

to 96% H, SO,% 99.87 99.88 99.86 99.90 99.89 99.87 99.89 99.90 99.88 Hardness resistance to 35% NaOH,% 98.59 98.52 98.61 99.45 99.57 98.90 98.95 99.74 99.83

VNIIPI Order 720/33 Circulation 458 Subscription Branch of PPP Patent, Uzhgorod, Proektna St., 4

I 200 ° (; for

1, 60-4.04 2.22-4.74 2.0-4.80

From the glass of the proposed composition it is possible to develop facing materials and decorative and artistic products using all known methods of glass technology: continuous rolling, casting, pressing. In addition, the technology for preparing the proposed glass is characterized by the use of non-deficient raw materials, a decrease in temperature in the arches 5-1 by increasing the chemical resistance, 5 which is one of the most important characteristics of facing and decorative art materials.

Table f

Claims (1)

Aventurine glass, including SiO ₂ , ABjO ,, CaO, MgO, Fe ₂ 0 _? , Na ₂ 0, P ₂ O ₅ , F ₂ , Cr ₂ O ₃ , characterized in that, in order to lower · cooking temperature and increase alkali resistance , it is optional contains KO and SO ₃ in the following the ratio of components, wt.%: Si0 ₂ 51, 53-56.65 A6 ₂ 0j 2.22-2.51 CaO 30.0-30.78 MgO 2.8-3.4 Fe _z 0 ₃ 0.28-0.3 Na ₂ 0 0.38-0.42 ^p ₂ ° j 0.78-0.93 F _z 1.23-1.47 Cr ₂ O ₃ K ₂ () 1.8-3.03 1,5-2,19 G ss SO J 0.36-0.4 (L c w; © c © 00