KR100711770B1 - Apparatus for sticking refractory onto the surface of the tap hole of the blast furnace - Google Patents

Abstract

The present invention can more easily repair the damaged exit junction surface of the blast furnace without the operator directly attaching the molding material to the exit junction surface, the operator can work without having to worry about safety The present invention relates to a repair device for an outlet junction surface of a blast furnace, which includes: a blast furnace having an outlet for discharging manufactured pig iron, a mud gun having a nozzle tip connected to the outlet and supplying mud material filled therein to the outlet; And a repair portion coupled to the tip to repair the outlet splice surface.

Blast Furnace, Exit, Mud Gun, Nozzle Tip, Molding Material

Description

Abutment repair device for blast furnaces {APPARATUS FOR STICKING REFRACTORY ONTO THE SURFACE OF THE TAP HOLE OF THE BLAST FURNACE}

1 is a view showing a nozzle tip configuration of a mud gun according to an embodiment of the present invention.

2 is a view showing a coupling relationship between the mud gun and the nozzle tip according to an embodiment of the present invention.

Figure 3 is an exploded perspective view showing the configuration of the repair apparatus for the outlet connection surface of the blast furnace according to the embodiment of the present invention.

Figure 4 is a perspective view showing the configuration of the connection surface repair apparatus of the outlet of the blast furnace according to an embodiment of the present invention.

5 is a view showing a coupling relationship between the mud gun and the exit junction surface repair apparatus of the blast furnace according to an embodiment of the present invention.

Figure 6 is a view showing a state in which the junction of the exit surface repair apparatus of the blast furnace according to an embodiment of the present invention is bonded to the exit port in a state coupled to the mud gun.

The present invention relates to an outgoing splice repair device of a blast furnace, and more particularly, to an outgoing splice repair device of a blast furnace that can be more easily repaired to the bonded surface of the damaged exit spout mounted on the nozzle tip of the mud gun will be.

Typically, blast furnace (blast furnace) is a device used in the iron making process, is charged with iron ore and coke inside the burned coke to remove the oxygen in the iron ore to dissolve to make pig iron.

Pig iron manufactured in such a blast furnace is discharged to the outside through the exit port, the exit port is completed by the mud gun (mud gun) is closed.

The mud gun is a device that replenishes and fills the mud material in the mud gun fuselage every time the pig iron in the blast furnace is unloaded, and closes the tap opening by pushing the mud material into the tap opening using a cylinder and firing.

The mud gun is operated at a high pressure of about 300 kg / cm 2 by hydraulic pressure, and a nozzle tip is installed at the mud gun nozzle to push the mud material into the blast furnace. In this configuration, the mud gun is advanced from the standby position to the exit port, when the junction of the exit port and the nozzle tip of the mud gun is in close contact, the cylinder inside the mud gun is advanced and the mud material is pushed through the nozzle tip to the exit port to block the exit port.

However, when the molding material, which is a refractory forming the outlet joint surface, comes into close contact with the nozzle tip of a mud gun operated at a high pressure of about 300 kg / cm 2, a part is broken by an impact or the refractory is oxidized, so that the nozzle tip and the outlet joint surface of the mud gun are oxidized. Since it is not completely sealed, when the mud material inside the mud gun is pushed into the exit port, the mud material is not pushed into the exit port and flows out between the joint surfaces. Therefore, the exit joint surface must be repaired (molded) when the molding material leaks out or is expected to leak. That is, when the exit joint surface is not good due to the outflow of mud material during closing of the exit port, the exit junction surface is repaired.

Outlet splice repair is performed by digging the spout splice surface about 20mm to 30mm with opening device, which is a through-hole opening device, and then kneading the molding material with water in a narrow space on the upper side of the spout. After it is made, the worker attaches each of the excavated outlets from the bottom to the top by hand. In this process, after attaching the lump-shaped molding material to the outlet joint surface, the mud gun is rotated from the standby position to the outlet port so that the nozzle tip of the mud gun adheres closely to the outlet joint surface and the mud material is not pushed in. The mud gun is squeezed at a pressure of about 300 kg / cm 2 to complete the repair of the exit splice surface.

However, in front of the exit, which is the repairing point of the exit junction, there is also a large hot water at the top of the exit, where the flames, gas, flames and dust generated around the exit are scattered. Long time access is difficult even when wearing a cotton hood, so it takes a long time because 3-4 people work alternately.

In addition, even when the melt remains in the large hot water, the repair of the exit joint surface must be performed. Therefore, the worker must attach the molding material directly to the exit joint surface in the presence of the melt to the entrance entrance. There is a problem of safety accidents due to burns due to high heat or loss of workers.

The object of the present invention is that the operator can more easily repair the damaged exit junction surface of the blast furnace without directly attaching the molding material to the exit junction surface, the operator does not have to worry about safety It is to provide a repair device for the junction of the exit of the blast furnace.

In order to achieve the above object, the present invention has a blast furnace having a discharge port for manufacturing pig iron, mud gun having a nozzle tip connected to the exit port to supply the mud material filled in the exit port, coupled to the nozzle tip And a repair unit for repairing the outlet connection surface.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. While many specific details, such as the following description and the annexed drawings, are shown to provide a more general understanding of the invention, these specific details are illustrated for the purpose of explanation of the invention and are not meant to limit the invention thereto. And a detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a view showing a nozzle tip configuration of a mud gun according to an embodiment of the present invention, Figure 2 is a view showing a coupling relationship between the mud gun and the nozzle tip according to an embodiment of the present invention. And, Figure 3 is an exploded perspective view showing the configuration of the outlet junction surface repair device of the blast furnace according to an embodiment of the present invention, Figure 4 is a view showing the configuration of the outlet junction surface repair device of the blast furnace according to an embodiment of the present invention. The combined perspective view.

With reference to Figures 1 to 4 will be described the configuration of the repairing device of the exit junction surface of the blast furnace according to the embodiment of the present invention.

The outlet connection surface repairing device of the blast furnace according to the embodiment of the present invention includes a blast furnace having a tap hole for discharging the manufactured pig iron, and connected to the tap hole of the blast furnace for supplying a mud material filled therein to the tap hole Mud gun 102 having a tip 100, and a repair portion coupled to the nozzle tip 100 to repair the outlet connection surface, it is possible to more easily repair the bonded surface of the damaged outlet.

The mud gun 102 is a structure for replenishing and filling the mud material therein, and serves to close the tap opening by pushing the mud material into the tap opening and firing. The mud gun 102 is operated at a high pressure of about 300 kg / cm 2 by hydraulic pressure as in the prior art, and a nozzle tip 100 is installed at the mud gun nozzle to push the mud material into the blast furnace. In addition, at least one protrusion 110 is formed on the nozzle tip 100 of the mud gun 102 as illustrated in FIG. 1, and the repair part includes the nozzle tip (the tip of the mud gun 102) through the protrusion 110. 100). That is, the maintenance part and the nozzle tip 100 of the mud gun 102 may maintain a coupled state through the protrusion 110 formed on the nozzle tip 100 of the mud gun 102.

The maintenance part includes a main housing, a sub housing 330, and a buffer member 340.

The main housing is coupled to the nozzle tip 100 and is formed in a cylindrical shape. On the outer circumferential surface of the main housing is preferably formed a projection groove 316 is coupled to the projection 110 of the nozzle tip 100. The main housing includes a first housing 310 that forms an outer wall and a second housing 320 that forms an inner wall at a distance from the first housing 310. The protrusion groove 316 is preferably formed in the first housing 310. It further includes a guide member mounted between the first housing 310 and the second housing 320 to guide the movement of the sub-housing 330.

The guide member includes a first member 312 coupled to the first housing 310, a second member 314 coupled to the first housing 310 at a distance from the first member 312, and a second housing 320. ) And a fourth member 324 coupled to the second housing 320 at a distance from the third member 322.

The guide member is formed along the circumferential direction of the main housing, and is preferably formed at intervals of 90 degrees along the circumferential direction of the main housing as in the embodiment of the present invention.

The sub-housing 330 is a part in which a molding material is inserted in combination with the main housing, and one surface of the sub-housing contact surface is guided along the longitudinal direction of the main housing.

The buffer member 340 connects the main housing and the sub housing 330, and is preferably formed of a coil spring that provides an elastic force to the sub housing 330. In addition, when the guide member is formed between the first housing 310 and the second housing 320 constituting the main housing as described above, the shock absorbing member 340 is preferably mounted in the guide member.

In the above configuration, when the molding material is applied to the sub housing 330 constituting the maintenance part, the exposed portion of the sub housing 330 is exposed by the contracting action of the buffer member 340 mounted inside the guide member. It will gradually get inside.

As such, when the maintenance unit is coupled with the nozzle tip 100 of the mud gun 102 and the mud gun 102 is turned, the sub housing 330 constituting the maintenance unit at the moment of closing the exit port joint surface constitutes the main housing. The nozzle tip 100 of the mud gun 102 protrudes through the first housing 310 and the second housing 320, and the molding material injected into the sub housing 330 is discharged through the nozzle tip 100. It is attached to the precursor joint.

5 is a view showing a coupling relationship between the mud gun and the blast furnace junction surface repair apparatus according to an embodiment of the present invention, Figure 6 is a mud gun outlet junction surface repair apparatus according to an embodiment of the present invention mud It is a figure which shows the state joined to the exit port in the state coupled to the gun.

5 and 6, the operation of repairing the exit junction surface of the blast furnace using the apparatus for repairing the exit junction surface of the blast furnace according to the embodiment of the present invention.

First, a bit for biting out the connection surface of the exit port is mounted on the opening.

Subsequently, the opening machine is turned to drive the opening machine in accordance with the hand signal of the operator in front of the exit port, and the joining surface of the exit port is excavated.

At this time, the excavation of the exit junction surface is excavated until a white part is seen. Here, the configuration for excavating the junction of the exit opening through the hole and the excavation bit is omitted.

As described above, in the state in which the exit opening surface 600 is excavated, the molding material 500 is mixed with an appropriate amount of water, the molding material 500 is opened and chopped firmly, and then taken with a molding frame to fit the size. Once again, chop it with a rubber mallet.

Subsequently, grease is applied to the nozzle tip 100 portion of the mud gun 102, and then the repair part is coupled with the nozzle tip 100 of the mud gun 102.

In this state, the molded material 500 which is hardly chopped is introduced into the upper part of the repair part, that is, the sub housing 330, and the edge is hit with a rubber hammer.

Then, after spraying a little water on the molding material 500 injected into the sub-housing 330 with a spray bottle, the mud gun 102 is rotated to attach the molding material 500 to the outlet connection surface 600.

When the molding material 500 is attached to the outlet connection surface 600, the sub housing 330 is inserted between the first housing 310 and the second housing 320 along the guide member constituting the main housing, and the shock absorbing member. 340 is in a compressed state. Then, the nozzle tip 100 of the mud gun 102 is protruded to the exit junction surface 600 as shown in FIG. According to this operation, the molding material 500 is attached to the outlet connection surface 600 through the nozzle tip 100 of the mud gun 102.

Preheated with coke oven gas (COG) in the state in which the molding material 500 is attached to the outlet connection surface 600.

As described above, the molding material 500, which is a refractory forming the outlet connection surface 600, is in close contact with the nozzle tip 100 of the mud gun 102 while being injected into the sub-housing 330. When attached to the 600, the repair portion guides the molding member 500 and the outlet junction surface 600 to be in close contact with each other, and the molding member 500 can be easily attached to the damaged outlet junction surface 600. When the molding member 500 is pushed into the outlet joining surface 600 so that the molding material 500 is not pushed into the outlet joining surface 600, the outlet joining surface 600 and the nozzle tip 100 are formed. It can prevent outflow in between.

As described above, the outgoing splice repair surface repair apparatus of the blast furnace according to the present invention can perform the outgoing splice repair work more simply during the outgoing splice repair work, thereby reducing the work time.

In addition, it is possible to reduce the work load of the operator from the elements harmful to the operator during the repair operation of the outlet connection surface has the effect that the operator can perform the repair operation of the outlet connection surface in a safer state.

In addition, it is possible to reduce the outflow of the molding material during the repair operation of the outlet junction surface, there is an effect that can maintain the state of the outlet junction surface better.

Claims (9)

Blast furnace having a tap hole for discharging the pig iron produced; A mud gun having a nozzle tip connected to the outlet and supplying a mud material filled therein to the outlet; It is coupled to the nozzle tip and includes a repair unit for repairing the outlet connection surface, The repair part A main housing including a first housing forming an outer wall, a second housing having a cylindrical shape spaced apart from the first housing, and having a cylindrical housing coupled to the nozzle tip; A sub housing coupled between the first housing and the second housing so that one surface of the main housing which contacts the outlet junction surface is guided along the longitudinal direction of the main housing; And a buffer member mounted between the first housing and the second housing to connect the main housing and the sub housing. The method of claim 1, At least one protrusion is formed on the nozzle tip of the mud gun, and the repair unit is a repairing device for the outlet connection surface of the blast furnace coupled to the nozzle tip of the mud gun through the protrusion. delete delete The method of claim 1, And a guide member mounted between the first housing and the second housing to guide movement of the sub housing, respectively. The method of claim 5, The guide member may include a first member coupled to the first housing; A second member coupled to the first housing at a distance from the first member; A third member coupled to the second housing; And a fourth member coupled to the second housing at intervals from the third member. The method of claim 6, The guide member is a repairing device for the outlet connection surface of the blast furnace is formed at intervals of 90 degrees along the circumferential direction of the main housing. The method of claim 7, wherein The buffer member is a repairing device for the exit port of the blast furnace formed of a coil spring mounted in the guide member. The method of claim 2, Outlet splice repair surface repair device of the blast furnace is formed on the outer circumferential surface of the main housing is a projection groove coupled to the projection of the nozzle tip.

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