KR100496536B1 - An apparatus for fixing the wear and projection of brick in converter - Google Patents

Abstract

The present invention relates to a device for repairing wear and protrusions of a refractory constructed in a converter.

The present invention is equipped with a plurality of moving wheels 11 on the lower surface to facilitate access to the furnace port 112 side of the converter body 110, the hydraulic body 12 is installed on the upper surface (10); A repair material tank 20 connected to the compressed air supply line 21 to increase the internal pressure of the internal space in which the refractory repair material F is filled; An operation block 30 in which an inner tube 23 for supplying a repair material extending forward from an outer surface of the repair material tank 20 and an exterior 33 of a predetermined length assembled to an outer circumferential surface of the inner tube 23 are housed; An operation cylinder (40) fixed to the operation block (30) by a rod end connected to the exterior (33) to bring the exterior (33) tip closer to the furnace port (112) of the tilted converter body (110); Control panel 50 for controlling the opening and closing of the opening and closing valves 22 and 24 installed in the compressed air supply line 21, the inner pipe 23 for the repair material supply and the forward and backward operation of the operation cylinder 40; It is configured to include.

According to the present invention, it is possible to perform the repair operation by inserting the refractory repair material accurately and quickly into the wear and protrusion of the refractory to be built in the converter to improve the service life of the refractory inside the converter, to minimize the downtime of the converter It can improve work productivity.

Description

AN APPARATUS FOR FIXING THE WEAR AND PROJECTION OF BRICK IN CONVERTER}

The present invention relates to a device for repairing the wear and protrusion of the refractory made in the converter, and more specifically, to the repair and reinforcement of the refractory material to the wear and protrusion of the refractory is built in the converter for refining molten steel molten steel accurately and quickly The present invention relates to a refractory wear and protrusion repair apparatus of a converter that can perform work to improve the service life of the refractory in the converter and improve work productivity by minimizing downtime of the converter.

Generally, as shown in FIG. 1, a steelmaking process of an ironworks is performed in which a refractories 4 are built in a converter body 110 made of steel, and the converter body 110 is loaded with scrap and molten iron. It is equipped with a tilting device 120 for tilting at a predetermined inclination angle and an oxygen blowing lance 130 for injecting oxygen into the converter 110 so as to refine the molten iron charged in the converter body 110 with molten steel. .

In this converter 100, as shown in Fig. 2 (a) (b), the converter body tilted to one side by hanging the scrap chute 141 and the ladle 142 to the hook 149 of the charging crane 140 ( Scrap metal and molten iron are charged into each other, and refractory built up in the converter body 110 in the process of injecting oxygen into the converter 100 and reacting with the molten iron using an oxygen injection lance 130 for a predetermined period. The refractory portion that meets the hot water surface of the molten steel in (Yeonwa) locally eroded or protruded, and the abrasion and protrusion of the refractory (4) acted as a cause of shortening the service life of the converter (100).

Accordingly, in order to repair the abrasion and the protrusion of the refractory 4, as illustrated in FIG. 3, the converter body of high temperature is stopped in a state where the converter body 110 in a high temperature state is tilted 90 ° and then stopped. Refractory worn by a worker located far away from 110 throws the refractory repair material (made of kneader) F into the refractory wear site W generated in the converter body 110 through the open furnace port 112. 4) was repaired.

However, such a conventional repair work is precisely because the worker throws and repairs the refractory repair material (kneader material) F at a position away from the furnace port 112 of the converter body 110 in a high temperature state by more than 10 m. It is difficult to repair the damaged wear site (W), excessive working time and the amount of refractory repair materials used are excessively necessary, thereby lowering the work productivity of the steelmaking converter process, as well as the furnace structure of the converter body (110). When throwing the refractory repair material through the 112, there was a problem that there is a risk of safety accidents of workers.

Therefore, the present invention has been proposed to solve the conventional problems as described above, the purpose of which is a refractory worn by putting the refractory repair material directly and accurately to the site that is a problem when erosion and partial extrusion of the refractory built in the converter It is intended to provide a refractory wear and protrusion repair device that can improve the refractory life of the converter by increasing the accurate and rapid recovery of the converter, and increase the work productivity of the converter.

As a technical configuration for achieving the above object, the present invention,

In the device for repairing the wear portion of the refractory built up inside the converter body as a refractory repair material,

A moving body equipped with a plurality of moving wheels on a lower surface of the converter body to facilitate access to the furnace port side of the converter body, and a hydraulic tank installed on the upper surface of the converter body;

A repair material tank connected to the compressed air supply line to increase an internal pressure of an internal space in which the refractory repair material is filled;

An operation block in which an inner tube for repair material supply extending forward from an outer surface of the repair material tank and an exterior of a predetermined length assembled to an outer circumferential surface of the inner tube are accommodated inside;

An actuating cylinder fixed to the actuating block by having a rod end connected to the outer end so as to approach the outer end of the inclined converter body;

By providing the refractory wear and protrusion repair device of the converter, characterized in that it comprises a; a control panel for controlling the opening and closing time of the opening and closing valve of the compressed air supply line, the repair material supply inner pipe and the forward and backward operation of the operation cylinder; All.

Hereinafter, the present invention will be described in more detail.

Figure 4 is an overall configuration showing the refractory wear and protrusion repair device of the converter according to the present invention, Figure 5 is a detailed view showing a moving block employed in the refractory wear and protrusion repair device of the converter according to the present invention, Figure 6 is a state diagram showing the refractory wear and protrusion repair device of the converter according to the present invention.

The apparatus 1 of the present invention, as shown in Figures 4 to 6, the wear of the converter body 110 during the wear of the refractory (4) of the converter body 110 in contact with the molten steel that is refined inside the converter 100. As a device capable of supplying and repairing the repair material accurately and quickly, the device 1 includes a mobile body 10, a repair tank 20, an operation block 30, an operation cylinder 40, and a control panel ( 50).

That is, the mobile body 10 has a plurality of lower surfaces to facilitate access to the side of the furnace port 112 tilted at a certain inclination angle to one side to repair the damage of the refractory material 4 built in the converter body 110. The moving wheel 11 is mounted, and the hydraulic tank 12 is installed on the upper surface.

And, the repair material tank 20 is a receiving member which is installed on one side of the upper surface of the mobile body 10 is filled with a certain amount of repair material, by increasing the internal pressure of the inner space on the outer surface of the repair material tank 20 One end of the compressed air supply line 21 to which compressed air is supplied to facilitate external discharge of the refractory repair material filled therein is connected, and the other end thereof is connected to a compressor (not shown) that generates compressed air, while supplying the compressed air. In the middle of the length of the line 21 is an on-off valve 22 to adjust the supply of compressed air.

In addition, the outer surface of the repair material tank 20 is connected to one end of the repair pipe supply inner pipe 23 for guiding the repair material in the repair material tank 20 to the outside under high pressure internal conditions, the inner pipe 23 of the In the middle of the length, the on-off valve 24 is installed to control the supply flow of the repair material.

Here, the pressure gauge 25 is installed in the water holding tank 20 so as to measure and check the internal pressure at any time, and the supplementary port 26 is fastened to the upper end to replenish the water used for the refractory repair work. While mounting as a member 26a, an exhaust pipe 27 having an on / off valve 27a is mounted to lower the internal pressure of the repair tank 20 to atmospheric pressure before refilling the repair material through the refill port 26. .

In addition, the operation block 30 has an inner tube 23 for supplying a repair material of a predetermined length extending from the repair tank 20 in a central hole 31 formed through the body, and provided on an outer circumferential surface of the inner pipe 23. A predetermined length of the outer appearance 33 which is slidably assembled is accommodated in the guide hole 32 formed through the inner diameter larger than the inner diameter of the central hole 31.

In addition, the operation cylinder 40 fixed to the upper surface of the operation block 30 has the exterior 33 of the exterior 33 to bring the front end 33 closer to the furnace port 112 side of the tilted converter 100. The rod end is connected to the outer circumferential surface. Accordingly, the exterior 33 inserted between the outer circumferential surface of the inner tube 23 and the inner circumferential surface of the guide hole 32 during the forward and backward operation of the operation cylinder 40 connected to the hydraulic tank 12 is converted into the converter ( 100) or spaced apart.

Here, the outer surface 33 has a long hole 39 of a predetermined length so that the forward and backward motion of the rod end 41 connected to the outer surface of the outer surface 33 is smoothly performed on the upper surface of the operation block 30. It penetrates to communicate with the guide hole 32 to be inserted.

In addition, the lower end surface of the operation block 30 is provided with a connector 17 which is assembled via the support member 15 and the pin member 16 installed on the upper surface of the mobile body 10, the water holding tank The lower surface of the 20 is pivoted up and down the front end of the appearance 33 operated forward from the guide hole 32 of the operation block 40 around the pin member 16 so as to expand the input area of the repair material. The turning cylinder 18 is provided and comprised.

At this time, in order to prevent damage to the inner tube 23 connected between the repair material tank 20 and the operation block 30 during the swing operation of the operation block 40 by the vertical operation of the swing cylinder 18. It is preferable to be connected to each other via a connecting table 29 made of a durable material.

On the other hand, the control panel 50 is provided with a button member for adjusting the opening and closing valve 22 of the compressed air supply line 21 to increase the internal pressure of the repair material tank 20 before maintenance work, maintenance work Another button member is provided to adjust the opening and closing valve 24 of the inner pipe 23 for supplying the repair material to supply and spray the repair material (F) to the exterior 33, the exterior 33 during maintenance work Another button member for controlling the forward or backward operation of the operation cylinder 40 to approach the furnace port 112 side of the tilted converter, while the internal pressure of the repair material tank 20 at atmospheric pressure when refilling the repair material A button member for adjusting the opening / closing valve 27a of the exhaust pipe 27 to switch to the state and a button member for controlling the up / down degree of the swing cylinder 18 are also provided.

The operation of the present invention having the above configuration will be described.

Repairing the damaged part of the refractory built up in the converter body 110 using the apparatus 1 of the present invention, first, the boundary in contact with the molten steel while injecting oxygen into the converter body 110 to refine the molten steel When the refractory material 4 formed on the site is damaged and protrudes, the molten steel in the converter body 110 is pulled out in a post process to completely empty the inner space of the converter body 110 to allow repair work. Put it.

In this state, the converter body 110 is started to be tilted by the tilting device 120 toward the device 1 of the present invention waiting for work, and the converter body 110 is tilted at 90 ° to open the furnace ( When 112 corresponds to the front end of the operation block 30, the driving of the tilting device 120 is stopped to stop tilting of the converter body 120.

Continuously, the moving body 10 is moved close to the converter body 110 side and stopped, and the internal pressure of the repair material tank 20 filled with a certain amount of repair material (F) is increased to smoothly discharge the repair material. In order to make the opening and closing valve 24 of the maintenance pipe supply 23 and the on-off valve 27a of the exhaust pipe 27 to be closed, the on-off valve 22 of the compressed air supply line 21 is opened to Compressed air is supplied into the repair tank (20).

In this case, the internal space of the repair material tank 20 is immediately increased by the supplied compressed air, and when the internal pressure is increased to 6 bar or more, by the detection signal of the pressure gauge 25 to detect this Since the on / off valve 22 of the compressed air supply line 21 is automatically closed, the internal pressure of the water holding tank 20 does not rise above 6 bar having a high explosion risk.

Then, when the ready state to insert the repair material is completed as described above, by advancing the rod end 41 by the forward operation of the operation cylinder 40, assembled on the outer peripheral surface of the inner tube 23, the rod The exterior 33 connected to the tip 41 is extended to the furnace port 112 side of the converter body 110.

At the same time, when the opening and closing valve 24 of the inner pipe 23 for supplying the repair material is opened, the repair material F in the repair tank 20 having a high internal pressure is supplied to the inner pipe 23 as the only passage. In order to be injected into the furnace port 112 through the exterior 33 assembled on the outer circumferential surface of the inner tube 23 to the refractory portion 4 of the interior of the converter body 110 corresponding to the front end of the exterior 33. It is possible to accurately coat the repairing material (F) granulated during the injection.

On the other hand, if you want to repair another refractory wear portion in the converter body 110, by raising or lowering the rod end of the turning cylinder 18 installed to receive the working fluid from the hydraulic tank 12 Since the tip of the actuating block 30 is pivoted up and down about the pin member 16 to which the distal end surface of the actuating block 30 is connected, an appearance assembled to the actuating block 30 ( By varying the spray angle of 33), the repair area of the repair material can be widened.

In addition, the operation of replenishing the maintenance material (F) stored in the maintenance material tank 20, while closing the operation of the opening and closing valves 22 and 24 of the compressed air supply line 21, the inner tube 23, Opening and closing the opening and closing valve (27a) of the exhaust pipe (27) mounted to the repair water tank 20 in the state of lowering the internal pressure of the repair water tank 20 to atmospheric pressure, assembled to the top of the fraud water repair tank (20) The supplemental opening 26 to replenish the repair material.

Then, when the replenishment material (F) replenishment work into the replenishment tank 20 is finished, the refill port 26 is reassembled, so that the internal pressure of the replenishment tank 20 can be increased. The opening valve 27a is closed.

According to the present invention as described above, when the refractories built in the converter body is eroded by the molten steel to be eroded and worn or protruded to fall off, the repairing material from the inner and the exterior of the repairing material tank is supplied at high pressure, and the repairing material is accurately worn from the inner and outer parts. By spraying and coating quickly, the refractory life of the converter body can be extended compared to the conventional one, the worker's work load can be reduced while securing the worker's safety, and the maintenance cost can be reduced by reducing the amount of maintenance materials used. On the other hand, by performing the refractory repair work inside the converter quickly and accurately, the effect that can significantly improve the work productivity of the converter by minimizing the waiting time of the converter is obtained.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to clarify that knowledge is easy to know.

1 is a block diagram showing a typical converter facility,

Figure 2 (a) (b) is the operation of charging the scrap scrap and molten iron into the converter in a typical converter facility,

Figure 3 is a working state to repair the refractory body of the converter body in a typical converter facility,

Figure 4 is an overall configuration showing the refractory wear and protrusion repair device of the converter according to the present invention,

Figure 5 is a detailed view showing a moving block employed in the refractory wear and protrusion repair device of the converter according to the present invention,

Figure 6 is a use state showing the refractory wear and protrusion repair device of the converter according to the present invention.

Explanation of symbols on main parts of drawing

10 ............ Moving Body 11 ..... Moving Wheel

20 ...... Refill Tank 21 ..... Compressed Air Supply Line

22, 24, 27a ... closing valve 23 .....

26 ...... Supplements 27 ..... Exhaust Pipe

30 ...... Operation block 33 ..... Appearance

39 ...... long 40 ..... cylinder

110 ..... Converter body F ......

Claims (5)

In the device for repairing the wear portion of the refractory (4) built in the converter body 110 as a refractory repair material (F), A moving body 10 mounted with a plurality of moving wheels 11 on a lower surface of the converter body 110 to facilitate access to the furnace port 112 and a hydraulic tank 12 installed on the upper surface of the converter body 110; A repair material tank 20 connected to the compressed air supply line 21 to increase the internal pressure of the internal space in which the refractory repair material F is filled; An operation block 30 in which an inner tube 23 for supplying a repair material extending forward from an outer surface of the repair material tank 20 and an exterior 33 of a predetermined length assembled to an outer circumferential surface of the inner tube 23 are housed; An operation cylinder (40) fixed to the operation block (30) by a rod end connected to the exterior (33) to bring the exterior (33) tip closer to the furnace port (112) of the tilted converter body (110); Control panel 50 for controlling the opening and closing of the opening and closing valves 22 and 24 installed in the compressed air supply line 21, the inner pipe 23 for the repair material supply and the forward and backward operation of the operation cylinder 40; Refractory wear and protrusion repair device of the converter characterized in that it comprises. The method of claim 1, Refractory wear and protrusion repair device of the converter characterized in that the pressure gauge (25) is installed in the repair material tank 20 to measure and check the internal pressure from time to time. The method of claim 1, The upper end of the refilling tank 20 is equipped with a refilling port 26 to replenish the consumed refilling material (F), and the internal pressure of the refilling tank 20 before refilling the refilling material through the refilling opening (26). Refractory wear and protrusion repair device of the converter characterized in that it is equipped with an exhaust pipe (27) having an on-off valve (27a) to lower to atmospheric pressure. The method of claim 1, A guide hole into which the exterior 33 is inserted into a long hole 39 having a predetermined length so that the forward and backward motion of the rod end connected to the outer surface of the exterior 33 is smoothly formed on the upper surface of the operation block 30 ( 32. Refractory wear and protrusion repair device of the converter characterized in that the through-forming so as to communicate with. The method of claim 1, The lower end surface of the operation block 30 is provided with a connector 17, which is assembled through the support member 15 and the pin member 16 installed on the upper surface of the mobile body 10, the maintenance material tank 20 For turning the bottom surface of the upper and lower ends of the appearance 33 is moved forward from the guide hole 32 of the operation block 40 to the center of the pin member 16 to expand the input area of the repair material. Refractory wear and protrusion repair device of the converter characterized by comprising a cylinder (18).