SU726033A1 - Method of glass molding - Google Patents

Description

(54) METHOD OF WELDING GLASS

The invention relates to the glass industry, and in particular to the method of glass melting in high-performance glass-bath furnaces, in which the glass melting process is carried out at elevated temperatures around 1600 C. A method of glass melting in a glass furnace of the heated furnace is known. in the active cooking zone of the charge, graphite rods are installed to prevent direct contact of the charge with the furnace walls and reduce corrosion and corrosion of the walls. At some distance from the circumference, rod electrodes are installed that will provide additional heat supply P1. The disadvantages are known. The method is shielding the glass melt in the wall zone from thermal radiation of the flame and the roof, which degrades the glassmaking process, as well as overheating of the glass melt directly in contact with the electrodes and the appearance of the secondary black eye with simultaneous blockage of the glass melt by products of destruction of electrodes and graphite rods. The closest in technical essence and the achieved result is the method of glass melting B in a glass furnace furnace, which includes supplying fuel with an oxidizer and the mixture to the furnace, heating it, melting it to create an open mirror glass along the pool circumference in the active cooking zone and introducing additional heat moreover, additional heat supply is carried out both by electrodes located along the side walls of the furnace and by a refractory visor, which contributes to additional heat reflection on the surface charge in the wall region {2. The disadvantages of this method are less effective thermal effect on the charge in the near-wall zone when installing electrodes in the thickness of the melt, JTO leads to a decrease in furnace productivity. The involvement of cold deep layers of glass melt) in the surface flow under the charge worsens the chemical and thermal homogeneity of the melt. - In addition, the presence of pronounced vertical transverse flows in the installation area of the electrodes increases the corrosive effects of the pool walls. The aim of the invention is to improve the quality of the glass mass. This goal is achieved by the fact that in the method of glass melting in a bath furnace, which includes the supply of fuel with an oxidizer and the charge to the furnace, its heating, melting and the introduction of additional fuel into the near-wall zone of the furnace, additional fuel is introduced at an angle of 10-30 ° to the horizon. amount of 1-5% of the total fuel consumption with an oxidizing agent. Additional fuel is supplied to the wall of the furnace zone of the furnace 0.02-0.1 wide from its entire width.

thirty .

thirty

20

20

10 10

20

The method of isia glass cooking by means of the fuel consumption expense will allow to intensify the process of glassmaking and at the same time exclude the charge approach to the pool circumference, will ensure the prolongation of the furnace service life.

The increase in heat transfer through the area of an open mirror near the side walls of the pool led to an increase in the furnace's productivity (in example - option No. 4) to 383 tons / day, which amounted to 2.1 726033

Practically all charge approached to an okruzhka

Mostly PB curved narrow strip of glass melt

Mirror glassmas00 sya partially occupied by foam areas

00 800 1000 350

Used an oxidizer with an oxygen content of 52%

The annual economic efficiency of the proposed method of glass melting only on / one bath of a glass melting furnace with a productivity of 375 tons / day is 46.56 thousand rubles. per year, and when introduced into the glass industry at the rate of 12 furnaces will be 558.82 thousand rubles.

Claims (1)

Claims The method of melting glass in your furnace, including the supply of fuel with an oxidizing agent to the furnace. Replacing the electrodes with burners directly heats the charge from the surface and intensifies the glassmaking process. In addition, in this case, the product of the destruction of the electrodes is prevented from entering the glass mass and the removal of the glass mass to the surface of the deep layers is prevented, which ultimately leads to an improvement in the quality of the glass. . Examples of the method. With a total gas consumption per bath 4150-4200 m / h, the capacity of the furnace is 375 tonnes / day for the welded glass mass, the width of the cooking zone of the furnace is 10 m, and the distance from the cutoff center of the additional melter to the glass melt is 100-110 mm. The active cooking zone of the charge is 0.05-0.5 of the length of the cooking zone. The results of the method are shown in the table. 5 726033f and charge, its heating, melting and introductionSources of information, additional fuel into the wall zone is taken into account when exertized furnace, characterized in that, in order to improve the quality of the glass, to-i. U.S. Patent No. 3941577, Cl. 65-136, Additional fuel is introduced at an angle of Yu-s publication. 1976. 30 ° to the horizon in the amount of 1-5% of the total2. Australian Patent No. 217912, cl. 19.6 fuel consumption with an oxidizer. public. 1957.