SU1217791A1 - Electric glassmaking furnace - Google Patents

Description

The invention relates to the industrial use of building materials, in particular, to the design of electric, riic glass-melting furnaces used to cook glass in the production of glass fiber.

The purpose of the invention is to improve the quality of the glass melt and increase the productivity of the furnace by eliminating the secondary overheating of the glass in the upper zone of the heat sink.

FIG. 1 shows the oven, general view; in fig. 2 — dividing wall and end wall of the working basin, section; in fig. 3 is a graph of the temperature distribution of the glass over the depth of the working pool in close proximity to the separation wall.

The stove includes a boiling 1 and an advanced 2 pools. Between them there is a dividing wall 3, in the lower part of which there is a duct 4 for the flow of glass from the cooking basin to the working one.

The dividing wall in longitudinal section has the shape of a trapeze. The smaller base of the trapezoid a is facing the duct, and the larger base of the b is located in the upper part of the level of the glass melt of the cooking and producing parts. The ratio of the larger base to the smaller / b is 1.5. The indicated relation is determined experimentally. The table below shows the options for the implementation of an electric glass melting furnace with a different ratio of 1a and the technical characteristics are given in comparison with the prototype, which coincides with the basic object. The end wall 5 of the working part 2 is made up of a slope parallel to the side of the trapezium facing it.

The quality assessment of glass melt is determined by the temperature difference of glass melt by depth (at the duct and at the exit of the working part).

From the table it can be seen that in variants of furnaces 4, 5, 6 there is an overheating of the glass melt along its path from below to the upper zone of the working part by 20-50 ° C.

In variants of furnaces 1 and 2, a decrease in temperature to -30 ° C was recorded compared with the temperature in the lower zone of the working part.

The best option is a furnace 3, ensuring the absence of a temperature difference or a slight decrease. A large decrease in temperature according to the technological process is not advisable, since the glass mass must be reheated again in the feeder to form products.

The furnace works as follows.

The melt of glass obtained in the cooking basin 1 through the duct 4 of the dividing wall 3 enters the production pool 2. Due to the fact that it is separative, the wall has

the shape of the trapezoid facing the large base to the top, and the smaller base to the duct, the end wall of the working basin is made inclined parallel to the facing

| To it, the lateral side of the trapezoid, the temperature difference of the glass mass in the depth of the working part is insignificant, which excludes the possibility of overheating of the glass and

It improves the quality of glass melt and its working properties.

AND

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BOO 700 BOV

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Claims (1)

ELECTRIC GLASS-FURNACE FURNACE containing a cooking pool, a separation wall and a production pool with an end wall, characterized in that, in order to improve the quality, glass mass and furnace productivity by eliminating the secondary overheating of glass in the upper zone of the production pool, the separation wall in the longitudinal section is made in the form of a trapezoid with a smaller base in the duct of the furnace, while the ratio of the larger base to the smaller is 1.5, and the end wall is parallel to the facing surface Call duration wall.