CN211471478U

CN211471478U - Ladle refining furnace

Info

Publication number: CN211471478U
Application number: CN201922439632.9U
Authority: CN
Inventors: 殷大方; 于露; 戴引江; 周兆俊
Original assignee: Jiangsu Boyi Heavy Industry Co ltd
Current assignee: Jiangsu Boyi Heavy Industry Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-11
Anticipated expiration: 2029-12-30

Abstract

A ladle refining furnace comprises a movable wheel, the movable wheel is connected with a transport vehicle, a support leg is arranged below a ladle, a liquid discharge pipe is connected with a constant liquid outlet, an air joint is connected with an argon blowing pipe, the outer wall of the ladle is provided with a control valve and a trunnion, a hydraulic press is directly connected to a connecting rod, a stirring motor is connected with a stirring rod, the stirring rod is connected with a stirring blade, the stirring blade is arranged in molten steel, the reaction of argon and molten steel can be accelerated through the stirring motor, the stirring rod and the stirring blades, the stirring and alloying functions are realized, the reaction speed is improved, the refining function is strong, the effects of deoxidation, desulfurization and molten steel purification are good, the quality of steel is obviously improved, the stability of a product can also be improved, by the three independent electric arcs, the heating efficiency is high, the temperature rise range is large, the temperature control precision is high, through the setting of transport vechicle, the time when reducible level land is removed, great improvement machining efficiency.

Description

Ladle refining furnace

Technical Field

The utility model relates to a ladle refining furnace technical field, concretely relates to ladle refining furnace.

Background

The ladle refining furnace is a steel raw material refining device, and is widely applied to greatly improve the quality of steel materials due to simple structure, convenient operation and good refining effect, and the ladle refining furnace is a bottom-blowing argon ladle furnace heated by three-way submerged arc under normal pressure, and is a device for refining molten steel in a ladle.

At present, the existing equipment generally has strong refining function, poor effects of deoxidation, desulfurization and molten steel purification, and can not achieve the effect of complete reaction, and single electric arc heating has low efficiency, low temperature control and poor stability.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects of the prior art and providing a ladle refining furnace.

The utility model provides a ladle refining furnace, is including removing the wheel, removal wheel connect the transport vechicle, the transport vechicle be equipped with the ladle, ladle below be equipped with the landing leg, ladle bottom be equipped with fluid-discharge tube and air brick, the fluid-discharge tube connect permanent liquid outlet, the air brick on be equipped with the gas head, the gas head connect and blow the argon pipe, argon pipe connection argon blowing joint, the ladle outer wall be equipped with control valve and trunnion, the control valve be connected to the hydraulic press through the telescopic link on, the hydraulic press direct connection to the connecting rod on, the connecting rod on be equipped with the gag lever post, the ladle on be equipped with the bell, the bell on be equipped with voltage limiting table, agitator motor, electrode and feeder hopper, agitator motor connect the poking bar, the poking bar connect the stirring leaf, the stirring leaf settle in the molten steel.

The plug rod is arranged as one, penetrates through a furnace cover steel ladle and is internally provided with molten steel.

The pressure limiting meter is provided with a pressure limiting valve which can automatically deflate.

The number of the electrodes is three, and the three electrodes are arranged at the upper end of the furnace cover side by side.

The feed hopper passes through the furnace cover through the feed pipe and enters the ladle.

The trunnion set up to two, just the trunnion all connect a branch, branch pass through the crossbeam and fix mutually, a trunnion on be equipped with the helping hand dish.

The movable wheels are four in number and are arranged at four corners of the lower end of the transport vehicle.

The number of the supporting legs is four, and the supporting legs are arranged at the lower part of the ladle.

The utility model has the advantages that: the utility model provides a compact structure's a ladle refining furnace, the utility model discloses a agitator motor, stirring rod and stirring leaf that are equipped with can accelerate the reaction of argon gas and molten steel, possess stirring and alloying function, the reaction rate has been improved, refining function is strong, the deoxidation, the desulfurization, it is effectual to purify molten steel, the quality of steel is showing and is improving, can also improve the stability of product, through the three independent electric arc heating that is equipped with, the thermal efficiency is high, the intensification range is big, the temperature control precision is high, setting through the transport vechicle, time when reducible level land removes, great improvement machining efficiency.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

A ladle refining furnace comprises a moving wheel 17, the moving wheel 17 is connected with a transport vehicle 19, the transport vehicle 19 is provided with a ladle 15, a support leg 16 is arranged below the ladle 15, the bottom of the ladle 15 is provided with a liquid discharge pipe 14 and an air brick 12, the liquid discharge pipe 14 is connected with a constant liquid outlet 18, the air brick 12 is provided with an air joint, the air joint is connected with an argon blowing pipe 11, the argon blowing pipe 11 is connected with an argon blowing joint, the outer wall of the ladle 15 is provided with a control valve 20 and a trunnion 21, the control valve 20 is connected to a hydraulic press 22 through a telescopic rod, the hydraulic press 22 is directly connected to a connecting rod 23, the connecting rod 23 is provided with a plug rod 13, the ladle 15 is provided with a furnace cover 6, the furnace cover 6 is provided with a pressure limiting meter 2, a stirring motor 4, an electrode 3 and a feed hopper 5, the stirring motor 4 is connected with a stirring rod 7, the stirring rod 7 is connected with a stirring blade 9, and the stirring blade 9 is arranged in molten steel 10.

The plug rod 13 is arranged as one, the plug rod 13 penetrates through the furnace cover 6 and the steel ladle 15, and the molten steel 10 is arranged in the steel ladle 15.

The pressure limiting meter 2 is provided with a pressure limiting valve which can automatically deflate.

The number of the electrodes 3 is three, and the three electrodes 3 are arranged at the upper end of the furnace cover 6 side by side.

The feed hopper 5 passes through the furnace cover 6 through a feed pipe and enters the ladle 15.

The trunnions 21 are arranged to be two, the trunnions 21 are connected with a supporting rod, the supporting rods are fixed through the cross beam 1, and the power assisting disc 9 is arranged on one of the trunnions 21.

The number of the moving wheels 17 is four, and the moving wheels 17 are arranged at four corners of the lower end of the transport vehicle 19.

The number of the supporting legs 16 is four, and the supporting legs 16 are arranged at the lower part of the ladle 15.

Specifically, molten steel 10 melted in a primary smelting furnace is fed into a ladle 15, an electrode 3 is inserted into the molten steel 10 in the ladle 15, electric arc is generated in upper furnace slag, synthetic slag is added to form high-alkalinity white slag, argon is introduced from an argon blowing air brick 12, stirring is carried out through a stirring motor 4, a stirring rod 7 and a stirring blade 9, so that a strong reducing atmosphere is maintained in the ladle 15, and so-called submerged arc refining is carried out. Because the argon stirring accelerates the chemical reaction between slag and steel, and the electric arc heating is used for temperature compensation, the longer refining time can be ensured, thereby reducing the oxygen and sulfur contents in the steel.

The argon gas is beneficial to the chemical reaction between steel and slag, can accelerate the material transfer between the steel and the slag, and is beneficial to the deoxidation and the desulfurization of the molten steel 10. The argon blowing stirring can also remove non-metallic inclusions, and the stirring has another function of accelerating the temperature and the component uniformity in the molten steel 10 and quickly and accurately adjusting the complex chemical composition, which is an indispensable requirement for high-quality steel.

The argon blowing pipe 11 is provided with a quick connector, so that connection with an argon pipeline is facilitated, the liquid outlet 18 is arranged, the hydraulic device 22 can be controlled by the control valve 20 to lift the plug rod 13 on the connecting rod 23, and molten steel 10 is discharged conveniently.

The utility model provides a compact structure's a ladle refining furnace, the utility model discloses a agitator motor 4 that is equipped with, puddler 7 and stirring leaf 9 can accelerate argon gas and molten steel 10's reaction, possess stirring and alloying function, the reaction rate has been improved, refining function is strong, the deoxidization, the desulfurization, it is effectual to purify molten steel, the quality of steel is showing and is improving, can also improve the stability of product, through the three independent electric arc heating that is equipped with, the thermal efficiency is high, the intensification range is big, the temperature control precision is high, setting through transport vechicle 19, time when reducible level land removes, great improvement machining efficiency.

Finally, the embodiments were chosen and described in order to best explain the principles of the invention and the patent disclosure, and are not intended to be limited to the details shown. Modifications and equivalents of the embodiments of the invention may be made by those skilled in the art without departing from the spirit and scope of the invention, and are intended to be covered by the appended claims.

Claims

1. The ladle refining furnace comprises a movable wheel and is characterized in that: the device comprises a moving wheel, a transport vehicle, a ladle, supporting legs, a liquid discharge pipe and an air brick, wherein the transport vehicle is provided with the ladle, the lower part of the ladle is provided with the supporting legs, the bottom of the ladle is provided with the liquid discharge pipe and the air brick, the liquid discharge pipe is connected with a constant liquid outlet, the air brick is provided with an air joint, the air joint is connected with an argon blowing pipe, the argon blowing pipe is connected with an argon blowing joint, the outer wall of the ladle is provided with a control valve and a trunnion, the control valve is connected to a hydraulic press through a telescopic rod, the hydraulic press is directly connected to a connecting rod, the connecting rod is provided with a plug rod, the ladle is provided with a furnace cover, the furnace cover is provided with a pressure limiting meter, a stirring motor, an electrode and a feeding hopper, the stirring motor is connected with a stirring rod.

2. The ladle refining furnace of claim 1, wherein: the plug rod is arranged as one, penetrates through a furnace cover steel ladle and is internally provided with molten steel.

3. The ladle refining furnace of claim 1, wherein: the pressure limiting meter is provided with a pressure limiting valve which can automatically deflate.

4. The ladle refining furnace of claim 1, wherein: the number of the electrodes is three, and the three electrodes are arranged at the upper end of the furnace cover side by side.

5. The ladle refining furnace of claim 1, wherein: the feed hopper passes through the furnace cover through the feed pipe and enters the ladle.

6. The ladle refining furnace of claim 1, wherein: the trunnion set up to two, just the trunnion all connect a branch, branch pass through the crossbeam and fix mutually, a trunnion on be equipped with the helping hand dish.

7. The ladle refining furnace of claim 1, wherein: the movable wheels are four in number and are arranged at four corners of the lower end of the transport vehicle.

8. The ladle refining furnace of claim 1, wherein: the number of the supporting legs is four, and the supporting legs are arranged at the lower part of the ladle.