SU516649A1 - Glass pool production pool - Google Patents

Description

one

The invention relates to a device for producing glass melt and is intended for use by glass factories in the manufacture of a non-ferrous method of various products: sheet glass, pipes and others.

A well-known production pool of a glass furnace bath includes side walls of refractory bars to a double under, in the cavity of which heaters are installed.

This pool has the disadvantage that in the production of sheet glass, glass mass, in contact with the refractory bars and walls and bottom, destroys them and enriches it with alumina, resulting in curvature, schlieren, and stones in the glass.

The aim of the invention is to increase the chemical and thermal uniformity.

glass melt

This goal is achieved by the fact that in the proposed production basin, the upper under is made in the form of a plate of heat-resistant material and with a gap on it

To the walls of the pool, a bathtub made of a refractory material resistant to the glass melt was installed, a capricher of molybdenum, protruding around the perimeter of which is located under the refractory bars of the pool walls.

FIG. 1 shows the production pool of a glass furnace bath, a longitudinal section; in fig. 2 - the same, cross section; on fng. 3 shows the node I in FIG. one.

The proposed production basin is a bath 1 made of sheet metal — a refractory alloy that does not chemically interact with the glass melt (nanpHViep Mo). A bath 1 of shallow depth is installed on a submerged under 2, made in the form of a plate made of heat-resistant material (for example, steel AY 65 2 EP 747), under which cavity 3 is located. On the floor 2 there are refractory bars 4 of the pool walls.

The glass melt level is set somewhat higher than the sides of bath 1 (3-5 mm what is needed to protect the bath material from direct contact with oxygen of the air, which may cause its embrittlement and rapid failure.

In order to avoid contact of the glass melt with the upper hearth 2, the refractory bars 4 are mounted on the bottom sheet 5 of bath 1, extending along the perimeter from three sides of the bath. A gap is provided between the walls of bath 1 and bars 4, which compensates for the difference in expansion of bath 1 and bottom 2 with bars 4 installed on it.

In the cavity 3 under the upper hearth 2, heating elements 6 are located (electrical resistivity or gas burner devices) by which the temperature of the plate is maintained corresponding to the temperature of the glass mass produced. Due to the high thermal conductivity of the hearth 2 and the absence of heat loss through it, in the presence of regulators, the heating mass in cavity 3 produced by the glass mass acquires a high temperature uniformity. The high glass resistance of bath 1 provides the necessary chemical homogeneity of the glass mass produced. A ribbon of glass 7 produced from a thermally and chemically homogeneous glass mass (by the extraction method) is held by the side-molding rollers 8 and fixed, hardening, between the refrigerators 9, acquiring high optical qualities (no primary banding and the presence of plane parallelism).

Claims (1)

Invention Formula The production pool of a glass furnace furnace, including side walls of refractory bars and a double under, in the cavity of which heaters are installed, characterized in that, in order to increase the chemical and thermal uniformity of the glass melt, the top under is made in the form of a plate of heat-resistant material and on it with a gap in relation to the walls of the pool, there is a bath of refractory metal resistant to molten glass, for example, molybdenum, whose bottom protrudes along the perimeter and is located under the refractory bars of the pool walls. 00 &; Knot four Fi2.3