SU755757A1 - Method and device for glass smelting - Google Patents

Description

The invention relates to the construction materials industry, in particular, to technology and equipment for glass melting.

There is a method and a device for glass melting, in which the cooking is carried out in two stages in two successively installed furnaces: pre-firing furnaces пров · digestion, in which the main chemical reactions take place, and the main furnace, in which clarification and homogenization of glass occurs [, 1 ].

The disadvantage of this method and. Devices for melting glass are increased capital costs for the construction of glass furnaces and increased fuel consumption.

The closest to the invention of the technical essence and has reached; My result is a method and a device for glass melting, including loading the charge ^{- a} uniform layer on the melting slope, followed by refreshment, homogenization, and the production of molten glass mass.

The charge loading onto the fused slope is carried out periodically, so that after the melt melts the glass mass from the slope, the latter;

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heats up before loading the next batch of charge [2].

A device for implementing the method includes a charge hopper with a loading plate installed with the possibility of reciprocating movement in a horizontal plane, and a glass melting furnace bath with a melting slope and a pool, the melting slope being heated by the heat of exhaust gases.

The main disadvantages of the known method and device for glass melting are:

1) low productivity of the glass furnace furnace due to the low melting rate. the charge due to the use of heat from the exhaust gases, with heat loads on the charge, comprising (20–50) · 10 ³ kcal / mth;

2) low utilization rate of glass melt due to ingestion of unprepared glass particles and products of destruction of the refractory in the finished glass mass, and significant entrainment and dissociation of dyes when cooking painted glass;

3) rapid destruction of the refractory masonry of a glass furnace furnace.

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special melting slopes, due to the direct effect of heat flux on the surface of the melting slopes, not closed by the charge and a sharp change in the temperature of the slopes when exposed to a cold charge;

 4) periodic loading of the charge.

The installation of the loading plate horizontally adversely affects the glass formation process, which proceeds slowly and is completed only with a long stay of the charge in the pool: the furnace bath. In addition, the installation of the loading plate is horizontally associated with great maintenance difficulties.

The aim of the invention is to increase the utilization rate of glass mass, the productivity of the furnace, extending its service life and ensuring the cooking of colored glasses.

This goal is achieved due to the fact that in the method of glass melting in a glass furnace furnace, which includes loading the charge with a uniform layer on the melting slope with subsequent clarification, homogenization and generation of the molten glass mass, the heat flux of (120-130) g10 ³ kcal / m ² .hours for 2-3 minutes ^ gri load charge rate 3.5 - 4.5 kg / min per meter of loading width. A device for implementing this method includes a charge bin with a loading plate installed with the possibility of reciprocating movement, and a glass melting furnace with a heated melting slope and a pool, the loading plate being installed in a plane parallel to the melting slope plane, and mounted in the side walls of the loading pocket burner with a slope of 35-42 °

horizon

In the proposed method of melting glass, the charge is charged at a rate of 3.5-4.5 kg / min per meter of loading width. The lower limit of the loading rate is due to the need to continuously cover the surface of the melting slope with a layer of the charge, which significantly reduces the destruction of the refractory lining it and 'contributes to an increase in the utilization rate of the glass melt, and also ensures the prolongation of the furnace service. The upper limit of the loading rate is due to the possibility of fast penetration of the entire charge layer at selected heat fluxes, which reduces the entrainment of the dissociation of dyes when cooking colored glasses.

Installing the loading plate in a plane parallel to the plane of the melting slope provides heating of the melting slope with burners mounted in the side walls

the boot pocket and inclined at an angle of 35-42 to the horizon, provides the impact immediately after loading the mixture of powerful heat fluxes with its rapid melting, and at the same time reduces the destruction of the upper part of the melting slope.

Rapid melting of a thin layer of charge loaded at the melting slope increases the productivity of the furnace ι. provides a uniformly colored glass with an intense color.

The use of a direct-flow furnace with a melting slope ensures a quick change of various colors of colored glass, which also contributes to an increase in the utilization rate of glass melt.

Figure 1 shows a longitudinal section of the device for glass melting; figure 2 - plan of the furnace in section; a section in the area of the slope-figure 3 (transverse).

A device for implementing this method includes the charge hopper 1 with the loading plate 2 installed with the possibility of reciprocating movement, which ensures the loading of the charge into the glass-melting furnace bath 3.

A glass melting furnace 3 is equipped with a heated melting slope 4 and a pool 5. Burners 7 are mounted in the side walls of the loading pocket 6. Pool 5 is connected in series with the zone of clarification 8 and the zone of the stud 9.

The method of glass melting is carried out as follows: The charge from the hopper 1 is fed by the loading plate 2 to the melting slope

4. Temperature conditions allow the glass melt to freely flow from the melting slope 4, followed by clarification, homogenization and the production of molten glass mass.

Flame temperature by area:

melting - 1390 ± 10 ° β clarification - 1480 + 10 С working

. parts of the furnace - 1380+ JUS on the sink - 1240+ 40 ° С

The ratio of the charge and the battlefield 60: 40+ 80:20.

Performance

furnaces - 21-23 tons / day.

Cooking area

parts, - 19.3 m ² .

The total area of the furnace is 23.1 m ¹ .

The specific volume of glass melt from the cooking part is 1100-1200 kg / m ^ per day.

Primer p.

Red May ¹ glass factory built direct-flow glass furnace equipped with a smelter from 5

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oblique with a tilt angle of 45 °. The profile clear glass had the following composition (weight%):

510 ₄ - 72.8 - 1.5

Ыа _д О - 15.6 5

CaO - 6.3

MDO - 3.8

The coloring of glass in golden color is carried out with the use of GEZ, which is introduced into the mixture with the help of Κρβηθ small and diarite stubs.

Pre? The prepared mixture, together with the dye, is fed from the bunker to a movable loading plate, installed in a plane parallel to the plane of the melting slope.

The melting slope is heated with two gas burners installed. in the side walls of the boot pocket. Eagles are installed with a slope of 40 to the horizon at a height of 1350 mm from the furnace floor and at a distance of 650 mm from the upper edge of the smelting slope. The gas consumption for two burners is 100 m ^ / h. 25

The charge loading rate for making golden glass is 3.9 kg / min per meter of loading width.

A total of 15.6 kg of 30 charge per minute is loaded into the furnace.

Tests have shown that the charge layer on the melting slope melts in 2.5 minutes with a heat flux of 150.10% 'kcal / m ^ h. 35

The resulting glass melt has chemical and thermal uniformity.

The proposed method of glass melting and the device for its implementation in 10 allows to obtain evenly colored c. the mass of glass with an increase in furnace productivity by 45%, an increase in the utilization rate of the mass of the mass by 0.2% and the extension of the company of a glass-melting furnace to 18 months. The significant economic effect is due to the possibility of obtaining colored glass on a modernized glass-making furnace and accelerating the change of color of the glass. '

Claims (2)

Claim 1. A method of cooking glass in a bathroom with a stove oven stack, which includes loading the charge in a uniform layer onto the melting slope with subsequent clarification, homogenization and generation of molten glass mass, which, in order to increase the utilization rate of the glass melt, the furnace performance, extend the service life her and ensure the cooking of colored glass, carry out the impact on the mixture of heat flow, the value of (120-180) .10 ^ kcal / m ¹ .hour within 2-3 minutes at a charge loading rate of 3.5-4.5 kg / min per each meter of loading width. 2. A device for implementing the method according to claim 1, comprising a charge hopper with a charging plate installed with the possibility of reciprocating movement, and a glass-melting bath furnace with a heated smelting slope and a pool, in that the _agrant plate is installed In the plane parallel to the plane of the melting slope, and in the side walls of the boot pocket are mounted burners with a slope of 35-42 ° to the horizon.