SU1447565A1 - Arrangement for heating the lining of metallurgical container - Google Patents

Abstract

The invention relates to metallurgy and can be used to heat the lining of metallurgical vessels, such as ladles. The purpose of the invention is to increase efficiency and reliability in operation. Before performing the next operation of heating the lining of the bucket 7, the cover 1 is retracted to the extreme right position in the form of a hinged parallelogram 6 and the bucket 7 is placed on supports with a casting crane. Then the lid 1 advances with the help of the mechanism 6 on the buckets 7, the air and gas supply is turned on, and the burner 2 is ignited. Next, the lining of the bucket is heated according to a preset mode. When heated, the combustion products are removed from the bucket 7 through the U-shaped chimney w, branch pipe 3, enter the recuperator 4, where part of its heat is returned to the air, and then evacuated to the smoke removal system under the influence of vacuum. 1 h. n. f-ly, 5 ill.

Description

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The invention relates to metallurgy and can be used to heat the lining of metallurgical vessels, such as ladles.

The purpose of the invention is to increase the efficiency and reliability of work.

FIG. 1 shows the device in the working position, general view; in fig. 2 is a view A of FIG. one; in fig. 3 - device in position with the cover retracted when removing or installing the bucket .; in fig. 4 is a section BB in FIG. 3; in fig. 5 is a sectional view BB in FIG. four.

The device for heating the lining of metallurgical vessels has a lined cover 1 with a gas burner 2 installed in its center. The lid is connected to the reheater 4 via a U-shaped lined smoke exhaust pipe 3. The lid 1 and the recuperator 4 are fixed on the floor. 5, fastened to the movement mechanism in the form of a hinged parallelogram, which serves to move them when installing or removing capacity heaters, such as a bucket 7, and resting on the platform 8. The mechanism is driven by hydraulic or pneumatic cylinders. 9. For supplying cold air to the heat exchanger 4 has a fan 10. It is connected to the heat exchanger 4 by means of an air duct having a flexible section II and a rigid section 12 fixed to the beam 5. The burner 5 is connected to the heat exchanger 4 by an air duct 13 of hot air and has gas supply 14. The lower end of the heat exchanger 4 is separated by an air gap 15 from the duct 16.

The U-shaped chimney 3 for convenience of lining has a detachable ng. A bottom wall 17 with openings 18 for the passage of flue gases.

The heat exchanger 4 is fixed on the beams 5 by the upper end part with the help of a bracket.

The device works as follows.

Before the next operation of heating the lining of the bucket 7, the lid 1 is retracted to the extreme right position with the help of the movement mechanism 6 in the form of a hinge parallelogram, and the bucket 7 is placed on the crane. Then the lid 1 slides by means of the transfer mechanism onto the bucket 7, the air and gas are turned on, and the burner 2 is ignited. Next, the lining of the ladle is heated according to a predetermined mode. When heated, the combustion products are removed from the bucket 7 through a U-shaped smoke outlet pipe 3, 5

they fall into the heat exchanger 4, where some of their heat is given off to the air, and then, under the influence of vacuum in the duct 16, they are evacuated to the smoke removal system.

The cold air from the fan 10 through the air ducts and and 12 is supplied to the upper end portion of the heat exchanger 4 and enters the inner annular gap, where the main heat exchange between the combustion products, the inner wall of the heat exchanger and the heated air takes place. At the bottom of the heat exchanger, the air flow rotates by 180 ° into the outer annular gap and through the nozzle 13 enters the burner 2. Upon completion of heating

.j the gas and air supply is shut off, the cover 1 is retracted and the bucket 7 is fed to receive the next heat.

The supporting structure of the proposed device, a scab Kenna51 with a mechanical cam 5 cross-arm in the form of a hinged parallelogram, allows the recuperator 4 to be installed vertically, while its length is commensurate with the height of the vertical bucket 7, which provides an increase in the air heating temperature, corresponding to savings fuel and increase the temperature of the lining.

Due to the hermetic installation of the heat exchanger 4 with the mounting for the upper end part cooled by cold air supplied to it, the most favorable conditions of its internal walls having a temperature of about 1000 ° C are provided.

Connecting the cover 1 with the recuperator 3 U-shaped pipe 3 due to the detachable bottom wall 17 significantly enhances the conditions of the lining and the production of its repairs.

Claims (2)

1. A device for heating the lining of metallurgical vessels, comprising a lid with a burner, a heat exchanger for heating the air supplied to the burner, a mechanism for heating the lid .h of the heat exchanger, characterized in that, in order to improve reliability and efficiency, the movement mechanism is implemented A video de articulated parallelogram, connected to the lid with balkal5k carriers, while the heat exchanger is installed vertically parallel to the longitudinal axis) of the metallurgical tank, attached to the beams by the upper end part. 0 lid through lined nozzle. 2. A device according to claim 1, characterized in that the lower branch pipe is detachable. 0 (RB / G.2 //////////////////////// (Y7 / 7 //////// fie.d 0 :, 7 (. / ( B b 77 (Riga in to