KR100429155B1 - Apparatus for sticking refractory onto the surface of the tap hole of the blast furnace - Google Patents

Abstract

The present invention relates to a jig device with an outgoing joining surface molding material of the blast furnace mounted on the nozzle tip of the mud gun that can easily repair the damaged joining surface of the mud gun, and uses the mud gun to form the outgoing joining surface of the blast furnace A cylindrical pulp jig composed of wood and paper, which is fitted to the nozzle tip of the mud gun and is formed in the front end of the mud gun, and has a molding seating recess formed therein, to prevent cracking of the jig. In order to be characterized in that it consists of a bending ring installed in the middle of the jig and a ring member for fixing the molding material seated on the seating groove of the jig.

Description

Apparatus for sticking refractory onto the surface of the tap hole of the blast furnace}

The present invention relates to a device for attaching the outlet joint surface forming material of the blast furnace for forming the outlet of the blast furnace, and more specifically, the damaged outlet is mounted on the nozzle tip of the mud gun (Mud-Gun) The present invention relates to an outgoing splice joining surface forming material attaching device for a blast furnace that can be molded more easily.

In general, when the molten iron ore melting work in the blast furnace and the molten iron is accumulated in the furnace, the four molten iron outlets (11-2) are alternately discharged to the outside of the blast furnace by using an opener (not shown) through the outlet through the opening, When the molten iron is discharged from the blast furnace bottom (noser) and the molten iron is injected along with the high temperature wind containing gas from the outlet 11-2, the mud gun having opened another outlet and put the mud material 12-3 (12) blocks the exit 11-2 as shown in FIG.

The mud gun 12 is operated at a high pressure of 300 kg / cm 2 by hydraulic pressure, and a nozzle tip (Nozzle) on the mud gun nozzle 12-1 to push the mud material 12-3 into the blast furnace 10. Tip; 12-2) is installed. Therefore, the mud gun 12 is advanced from the standby position to the outlet 11-2, and when the outlet junction surface 11 and the nozzle tip 12-3 of the mud gun 12 come into close contact with each other, the cylinder inside the mud gun ( Not shown) and the mud material 12-3 is pushed through the nozzle tip 12-2 to the outlet 11-2 to block the outlet 11-2.

At this time, the nozzle tip 12- of the mud gun 12 in which the molded material (refractory AN-210) 11-1, which is a refractory forming the outlet connection surface 11, is operated at a high pressure of 300 kg / cm 2. 2) the mud material inside the mud gun 12 because the nozzle tip 12-2 of the mud gun 12 and the outlet joint surface 11 of the mud gun 12 are not completely sealed when the part is broken due to the impact or the refractory is oxidized. When pushing 12-3 into the tap opening 11-2, the mud material 12-3 flows out between the joining surfaces without being pushed into the tap opening 11-2. Therefore, when the molded material is leaked or is expected to flow out, the exit junction surface 11 must be molded (repaired).

The outlet port 11-2 is 500 mm from the outlet port joint surface 11 formed of a molding material, and the inside thereof is constructed with a lead.

The conventional exit port joining surface 11 forming (repair) method of the prior art exit 11 (11-2) after digging the exit joining surface 11 through the opening hole 11-2 penetrating device through the opening machine After the molding material 11-1 is kneaded with water in a narrow space on the upper side of the large bathway 13 on the front to form a plurality of lumps 11-1, the worker 14 is placed on the excavated outlet joint surface 11. Manually paste from bottom to top, respectively (see Figure 2). In addition, after the molding material 11-1 in the form of agglomerates is completely attached, the mud gun 12 is rotated from the standby position to the outlet opening 11-2 to the outlet connection surface 11 of the mud gun 12. The mud gun 12 is pressed at a pressure of 300 kg / cm 2 while the nozzle tip 12-2 is in close contact with the mud material 12-3. The exit splicing surface 11 compressed in this way becomes the same shape as the surface of the mud gun 12 nozzle tip 12-2. After 8 to 10 minutes, the mud gun 12 is retracted to the standby position to complete the joint surface forming (repair) operation.

However, the dispersing flame of 150-180 ° C. in front of the exit port, which is the place for forming the exit splicing surface, is the upper part of the large bathway 13 where the melts 13-1 and 13-2 at 1520 ± 10 ° C. are constantly standing. (13-3), the gas (11-5), the flame (11-4) and the dust generated around the exit port are scattered so that the worker (14,14-1) wears an alumina heat shield and a protective hood. Since direct access is difficult, it takes a long time because 3-4 people work alternately. Therefore, the refractories for repairing the splicing surface of the exit joints that are pasted first have to be decomposed frequently due to poor adhesion due to moisture evaporation. .

The outlet junction surface repair device invented to solve the above problems is as follows.

Utility Model Registration No. 1993-14555 (designated name: Repairing device for exit junction of furnace) shows that it consists of cylindrical inner and outer ring, spring member, fixing bolt, nut and guide member.

The inner ring of the present invention forms the outlet connection surface protection wall and the outer ring is a device for supporting the molding material.

However, the above conventional methods have the following problems.

First, since the outlet connection surface repairing device is made of steel, the mud gun is retracted to the standby position after completion of forming the joint surface and the inner ring is deformed due to high heat when the inner ring is separated from the tip. It is difficult.

Second, since the material of the repair device is steel, it is difficult for one worker to transport.

Third, since the inner ring side front end part and tip side front end part coincide, if the inner ring is removed after forming the joint surface, the area of the joint surface is enlarged by the contact part of the inner ring front part, so that the outflow of mud material occurs when the outlet is closed. Occurs.

The outlet junction surface repairing device of the above invention is not used in the field because of these problems, and there are many problems in practical use.

The present invention has been made to solve the conventional problems as described above, the operator can easily perform the joint surface forming (repair) operation without attaching the refractory for molding (repair) directly to the exit port in front of the exit port. It is an object of the present invention to provide an apparatus for attaching a molding material to the outlet joint of the blast furnace so that it is improved.

In order to achieve the above object, the apparatus for attaching the outlet joint surface of the blast furnace configured to form the outlet joint surface of the blast furnace by using the mud gun, the molding material fitted to the nozzle tip of the mud gun along the circumference of one side Molding attachment jig consisting of cylindrical pulp formed with seating grooves and wood and paper, a bending ring installed along the circumferential direction in the center of the outer peripheral surface of the jig to prevent cracking of the molding material attachment jig, and molding material mounting groove In order to fix the molded member seated on the present invention provides a device for attaching the molded part of the exit junction surface of the blast furnace, characterized in that consisting of a ring member installed inside the attachment jig.

BRIEF DESCRIPTION OF THE DRAWINGS Sectional drawing for demonstrating the structure of the exit point of a blast furnace and a mud gun.

2 is an explanatory diagram of a method of attaching a molding material to a splice joining surface according to the prior art;

3 is an exploded view, an assembled sectional view, and a front side view of a molding material attachment jig according to an embodiment of the present invention.

Figure 4 is a cross-sectional view showing a state in which the molding material attachment jig according to an embodiment of the present invention mounted on the mud gun nozzle tip.

Figure 5 is a cross-sectional view coupled with the molding material to the mud gun nozzle tip in accordance with an embodiment of the present invention.

Figure 6 is a cross-sectional view showing a state in which the molding material is bonded to the exit port is coupled to the molding material attachment jig mounted on the mud gun nozzle tip in accordance with an embodiment of the present invention.

<Description of Symbols for Major Parts of Drawings>

10: blast furnace

11: joining surface 11-1: molding material

11-2: Outlet

12: Mud Gun

12-1: Nozzle

12-2: Tips

12-3: Mud Ash

15: Jig for attaching molding material

15-1: Bending Ring

15-2: Molding groove

16: ring member

Hereinafter, with reference to the accompanying drawings illustrating a preferred embodiment of the present invention as follows, the same configuration is given the same reference numerals.

The outlet connection surface forming material attaching device according to the present invention includes a molding material attachment jig 15 fitted to the nozzle tip 12-2 of the mud gun 12, and a circumference in the outer middle of the molding material attachment jig 15. It consists of a bending ring 15-1 installed along the direction, and a ring member 16 installed inside the molding member attachment jig 15. The molding member attachment jig 15 is formed by combining wood and paper to form a cylindrical pulp. Consists of, the molding member seating groove 15-2 is formed along one side circumference. The molding material attaching jig 15 is installed so that the molding material seating groove 15-2 faces upward. In addition, the bending ring 15-1 is installed along the circumferential direction at the center of the outer circumferential surface of the molding material attachment jig 15 to prevent cracking of the molding material attachment jig 15. On the other hand, the ring member is installed inside the molding member attachment jig 15 to fix the molding member 11-1 seated in the molding member mounting recess 15-2. The ring member 16 is composed of a circular ring portion and an insertion portion which protrudes to one side and is inserted into the molding material.

In addition, a curved chamfer 15-3 is formed at the front edge of the jig 15, and the outlet molding material 11-1, which is a refractory material of the molding material seating groove 15-2 in the jig 15, is formed. Is seated to shape (repair) the outlet connection surface 11. The molding material attachment jig 15 is pushed back to the front end of the nozzle tip 12-2 when the mud gun 12 is in close contact with the outlet joint surface 11 and then ignited by a flame generated around the outlet port. Incinerated.

In addition, the ring member 16 for fixing the molding material is inserted into the inside of the nozzle tip 12-2, so that the mud gun 12 can be easily removed after retracting by turning to the standby position.

Apparatus for attaching the outlet connection surface molding material of the blast furnace according to the present invention configured as described above can be molded (repair) the outlet connection surface without the operator directly approaching the outlet opening, and the operation thereof is as follows. First, the refractory molding material 11-1 is inserted into the jig 15 to a thickness of 40 mm to 50 mm, and then chopped. When the refractory 11-1 is seated, the jig 15 is nozzle tip 12 of the mud gun 12. The ring member 16 is inserted so that the molding member does not fall off. Next, the mud gun 12 is advanced to closely adhere the molding member attachment jig 15 to the outlet 12-2. As soon as the molding member attachment jig 15 comes into contact with the edge of the surface 11, the molding member attachment jig 15 is pushed back, and the exit hole in which the molding member 11-1 seated therein is excavated for molding operation. Attached to the joint surface 11 by the force of the mud gun 12, the exit having the same shape as the nozzle tip 12-2 of the new mud gun 12 Sphere to form a joint surface 11. Also when retracted by the rotation of the mud gun 12 after 8 minutes to 10 minutes therefrom, to a stand-by position is completed, the molding operation. At this time, when the mud gun 12 is advanced to the outlet port 11-2 and is in close contact with the outlet port joint surface 11, the mud gun 12 is seated in the inner molding material seating recess 15-2 of the molding material attachment jig 15. The ring member 16 is fixed so that the molding material 11-1 does not fall off due to the impact. In addition, the ring member 16 allows the protective wall to be naturally formed at the edge of the outlet opening surface without excessive spreading of the molding material 11-1.

The present invention can perform a simple forming (repair) of the junction surface as described above, and contribute to the rationalization of personnel by shortening the working time and reducing the work load, and protect the worker from high heat, gas, dust, etc. It is possible to prevent workers from being stifled by the melt of the large aisle because the molding (repair) work is performed without approaching the precursor.In addition, the molding material attachment jig is made of wood and paper, which is excellent in workability, Because it is spontaneously ignited and incinerated by the flame, it preheats the molding materials and extends the service life of the tapping outlets, which improves productivity by stable tapping operations. It works.

The foregoing is merely illustrative of the preferred embodiments of the present invention, and those skilled in the art to which the present invention pertains may make modifications and changes to the present invention without departing from the spirit and gist of the invention as set forth in the appended claims. .

Claims (1)

(Correction) Apparatus for attaching the exit joint surface forming material of a blast furnace configured to form the exit joint surface of the blast furnace using a mud gun, Molding material attachment jig made of a cylindrical pulp is inserted into the nozzle tip of the mud gun and formed along the circumference of the molding material seating groove and synthesized wood and paper, A bending ring installed along the circumferential direction at the center of the outer circumferential surface of the jig to prevent cracking of the molding material attachment jig; Apparatus for attaching the molded part of the blast furnace outlet surface to the blast furnace, characterized in that consisting of a ring member which is installed in the molding member attachment jig to fix the molding member seated in the molding member seating groove.