SU35980A1 - Method and device for melting and degasification of glass under rarefied pressure - Google Patents

Description

In order to accelerate the smelting and de-gasification of glass under rarefied pressure according to the proposed method, the preliminary molten glass mass from the furnace basin is fed into the special chamber located under the furnace vault and connected to the vacuum through one of the two tubular branches that merge from , so that according to the Other it is subjected to de-gasification and final smelting the mass descends to the bottom of the basin due to the pressure difference created by the continuous admission of gas or air bubbles to one of them

This method is carried out by means of a chamber communicated (With a vacuum and placed in a glass-melting furnace with uJiifMH waste from it by two tubular branches immersed in the molten mass, and in one of them a hollow rubbing) is used, which serves to introduce air into the latter , or gas, in order to create a pressure difference between the branches filled with a mass, whereby a continuous circular circulation of the said mass is established along them.In the drawing, Fig. 1 shows a vertical section of the device; FIGS. 2 and 3 show the same variants ibora.

A device consisting of a degassing chamber 7 with branches 2 and 5, a bump (124)

into the pool /, podveschen for the neck 5 to the arch so that the enlarged part is clamped in the refractory insulating rings 7 8, covered by a collapsible casing 9 to JO. The bore nipple / 7 of the JO casing has a pipe 12, which has a pipe 75, and its conical part is sealed with a nut J4 in the neck 5. In the axial direction, through the branch 2, the chamber 7, the neck 5 and the pipe 72 passes through a tube 75 that locks its lower end; the latter is fastened by the upper expanded end of the cap 16 in the sleeve 77, moving in the gland 18 of the radiator 19 mounted on the pipe 72 with flanges 20 having an insulating gasket 27. When pumping gases through the nozzle 13 and pipe 72, due to vacuum in the chamber 7, from the pool 4, two pillars of molten substance rise, filling branches 2 and 5. By injecting small amounts of air or corresponding gases through valve 22, cavity 23 and holes 24 of rod 75, a column of liquid in branch 2, slightly gassing, becomes smaller specific c than the contents of the column 3. Because of the pressure difference is set between the legs of the circular flow through the branch 2, the chamber 7, the branch 3 and the pool.

The invention is invented.

1. The use of smelting and degassing of glass under rarefied pressure, characterized in that in order to accelerate smelting and gas evolution, the molten glass mass from the furnace pool is lifted under vacuum and gas interruption into a special chamber located in the firing space under the furnace roof, communicated with vacuum and equipped with two tubular branches immersed in a glass mass, causing it to continuously rise into the designated tank along one of the connecting branches and flow along the other, by reducing the specific gravity and the molten mass in the first getvi by continuously introducing gas or air bubbles into the glass mass.

2. A device for carrying out the method mentioned in Clause 1, characterized by using chamber 7 suspended from overlapping vault rings with branches 2 and 3 immersed in a glass melting pool (Figs. 1, 2 and 3) with a chamber passed through and branch 2 by tubular rod 75 serving to bring small amounts of air or other gases admitted through valve 22 to the said branch so that the molten mass in branch 2, slightly gasing, acquires a smaller specific gravity G and through the branches of the device vals circular flow of the indicated mass.

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