SU739014A1 - Avanturine glass - Google Patents

Description

The invention relates to decorative glasses, namely, aventurine glass compositions that can be used for making veneering and jewelery. Known aventurine glass, comprising in wt.%: 52-57 7, O -8,75 21,0-24,5 2,51-4,51 0,1 -0,5 2,02-7,2 2, 51-4.49 0.1 -0.4 1.01-3.51 0.01-2.0 0.1-1.7. The disadvantage of this glass is the low temperature resistance and the limited color coloring of the glass. The closest to the invention in terms of composition is black glass with a bloc of chromium oxides, which, according to their avant-garment, includes: (in wt.%): 58-71.5 5-9.8 20-34.5 4.5 -6.5 to 3.5 to 2 to 2 MpO to 1.5 TiOg in excess of 1OO% to 11. up to 1.5 to 0.25 C2J. Said glass is used to conduct panels and tiles. However, it has low heat resistance. The purpose of this invention is to increase heat resistance. To achieve this goal, the anthirin glass will additionally sieve Rl Oj at the following ratio of components (in. Weight.%):

SiOg

58,3-62

leo 4.1 -6.4

CaO 16.0-20.5 0.4 -6.1

Wgo

0.5 -1.8

F8, j05

O, 5-5.5, 3.3-8.0 CPgOj 0.5-3.5

PS ABOUT

The introduction of phosphoric anhydride, the specified amount, into the glass composition, facilitates the isolation of chromium crystals during the heat treatment process, facilitates their uniform distribution in the volume of glass with about the same size, which in turn affects the concentration of thermal stresses.

. To obtain different colors, the glass may additionally contain one oxide from the group CoO, FeO, M & E in the following ratio (wt.%) CoO 2.0-6.0

FfeO.2.0-6.5;

MpO2,6-6,8

This amount is a necessary and sufficient condition under which maintenance of the stability of the valence states in the above glass composition is achieved. An adventurous effect is achieved during the heat treatment process.

Glass chemical composition

by separating crystals of colored spinels of the ROCp O type: blue — when CoO and Cr-Oj are introduced into the glass, yellow when FeO and, and pink are added when MpO and are introduced.

For the production of glasses, available and cheap raw materials are used as basic raw materials: silica sand, chalk, dolomite, sodium sulfate, superphosphates, etc. You can also use metallurgical industry wastes, in particular, cupola slags, the content of which is sulfur and manganese as an impurity up to 1% does not have a significant effect on the properties of the proposed glass,

Chromium peaks, oxides of cobalt, iron, manganese, as well as non-ferrous metallurgy can be used to incorporate Cr20j, CoO, PvO and MhO glass into the composition.

Glass production is possible by any of the known methods of glass technology: continuous rolling, floating tape, pressing, casting.

Glasses are cooked in corundum crucibles at a temperature of 1,450 ° C + S for 37 hours in a weakly reducing medium. The chemical composition of the glass is given in Table 1 “The properties of the glass are given in Table 2,

T a b l and c a I

1.58.3 6.420.5

2.61.1 5.219.1

3.62,0,4,116,0

4.58, 120.3

5.60.0 4.216.3

6.58.5 6.218.1

7.60.3 4.216.1

8.58.4 6,019.1

9.59,2 4,416,2

green

blue

- -%

yellow

pink

.-Properties of synthesized glass

Claims (7)

1. Cooking temperature) 2. Tempo perry re start razgchevi () 3. Heat treatment temperature (C) 4. Density (g / cm) 5.Water resistance 6. Linear expansion coefficient (a LO 1 / 7. Heat resistance C Thus, aventurine glass has a high heat resistance, has a beautiful appearance, positive physicochemical properties and can be used in various veneer and jewelry products. , claims 1. Aventurine glass containing SiOg, AfgOj, CaO,,, Na O. CrgOj, characterized in that it also contains Pg OjnpH in the following ratio of components, wt.%; , 3-62.0 AEgO.4.1-6.4, 0-20.5 MdO0.4-6.1, 5- 1.8 Table 145О + Ю .7SO - 77O 134O + 20 2.5 - 2.7 11 hydropic class 7 71 - 78 135 - 140 0.5- 5.5 3.3- 8.0 0.5- 3.5 2. Avantyurin glass according to claim 1, which is different from the fact that, in order to expand the color jraMMbi, it is additionally contains one oxide from the group CoO, FbO, MpO in the following ratio of components (in wt.%): CoO2.0 - 6.0 FeO2, O - 6.5 MpO2.6 - 6.8 Sources and information are taken into account when examination 1. USSR author's certificate number 481555, cl. S OZ S 3/04, 1975. 2. USSR author's certificate NO 24О961, cl. C 03 C 3 / O4, 1966.