KR100864442B1 - Device for protecting iron notch - Google Patents

Abstract

SUMMARY OF THE INVENTION An object of the present invention is to provide an outgoing protection wall protection device of a blast furnace that can protect the outgoing protection wall from hot molten iron.

Accordingly, the present invention provides a panel that is in close contact with the guard opening of the blast furnace, a plurality of protruding members projecting to the front at the front end of the housing surrounding the guard wall of the outlet, and a hole provided to the outside of the panel so that the protrusion is fitted. A panel fixing means including a fastening member formed through the fastening hole formed on the protruding member and including a fastening pin for fixing the fastening member, and a plurality of partition walls are installed in a zigzag form to form a distribution path. One side is provided with a cooling water inlet pipe and a cooling water discharge pipe for circulating the cooling water on the flow path, and provides an outlet protection wall protection device of the blast furnace including cooling means for cooling the panel.

Panel, inlet, outlet, fastening pin, filling tube

Description

Device for protecting iron notch

1 is a cross-sectional view showing a typical blast furnace,

Figure 2 is a perspective view showing a guard wall and the guard wall protection unit of the blast furnace according to the present invention,

3 is a schematic cross-sectional view of a protective wall protection device according to the present invention,

4 and 5 is a schematic cross-sectional view showing the blast furnace mounting state of the outlet protection wall protection device according to the present invention.

Explanation of symbols on the main parts of the drawings

10 panel 11: partition wall

12: distribution path 13: inlet pipe

14: discharge pipe 20: protruding member

21: fastening member 22, 23: hole

24: fastening pin 30: filling tube

31: lid

TECHNICAL FIELD The present invention relates to a blast furnace, and more particularly, to an outlet guard wall protection device capable of easily protecting and managing the outlet guard wall of the blast furnace from hot molten iron or slag.

In general, blast furnace operation is essentially performed in order to obtain a predetermined molten iron, and the blast furnace operation involves charging iron ore and coke into a blast furnace and blowing high temperature hot air supplied from a hot stove facility into the furnace. By putting the coke to burn the iron ore is finally produced by the molten iron, and the melt accumulated in the furnace inside the furnace is discharged to the outside through the outlet provided in the lower outer surface of the furnace.

The internal structure of the furnace is constructed of a refractory set made of alumina so as to be able to withstand high temperature melt sufficiently, and the outer end of the furnace consists of a protective wall made of refractory, and the outer circumferential surface of the protective wall is covered with a castabl. Lose.

The opening and closing of the exit port is repeatedly performed on an average of a dozen times a day. In this process, the protection wall is exposed to high temperature molten iron, which causes cracking and dropping of the protection wall due to deterioration. As a large amount of slag inevitably generated by use is attached to the protective surface, there is a problem of failing to close the exit port due to poor exit surface management during exit port closing operation.

Therefore, there is a problem of shortening the life of the protective wall, and since the worker must perform a task to remove the slag attached to the protective wall every time before the departure, the work load increases and burns due to the high temperature working environment. The risk of a safety accident was high.

Accordingly, the present invention has been made in order to solve the above problems, it is an object of the present invention to provide an outgoing protection wall protection device of the blast furnace to protect the outgoing protection wall from hot molten iron.

It is another object of the present invention to provide a blast furnace protection wall protection device of the blast furnace, so that the slag generated when using the mud gun can be easily removed from the protection wall so that easy protection surface management can be made.

In order to achieve the object as described above, the outlet protection wall protection device of the present invention includes a panel in close contact with the outlet protection wall of the blast furnace, fixing means for fixing the panel to the protection wall, and cooling means for cooling the panel. do.

Here, the cooling means is preferably using a cooling water.

In addition, the present invention may further comprise refractory filling means for filling the refractory between the panel and the protective wall.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing a blast furnace in general, Figure 2 is a perspective view showing a guard wall and the protective wall protection device of the blast furnace according to the present invention, Figure 3 is a schematic cross-sectional view of a protective wall protection device according to the present invention.

According to the drawings, the blast furnace 100 has a charging chute 101 for charging the ore, sintered ore, coke, etc. into the blast furnace is installed at the top, the lower end is a tuyere 102 for applying high temperature hot air into the furnace Is provided, and the outlet port 103 for discharging molten molten iron while the coke is burned by the hot air is installed below the tuyere.

The outlet 103 is surrounded by the outlet housing 104, and the housing 104 is filled with refractory to form a protective wall 105.

Here, in the blast furnace of the above-described structure, the panel 10 is in close contact with the exit protection wall 105 of the blast furnace 100, the fixing means for fixing the panel 10 to the protective wall 105, the Cooling means for cooling the panel 10, and refractory filling means for filling the refractory between the panel 10 and the protective wall 105.

The panel 10 has a hollow structure, and the panel 10 has a size and a shape that can be inserted into the housing 104 constituting the protective wall 105. Of course, the protective wall 105 is formed at the front end of the housing 104 by the thickness of the panel 10 so that the panel 10 can be inserted into the housing 104 accurately.

And as shown in Figure 1 when the lower end of the panel 10 has a length that can sufficiently descend to the outlet opening 103, the lower center portion is cut in a semi-circular shape in order to avoid interference with the outlet opening (103).

Accordingly, the panel 10 covers the protective wall 105 and the exit port 103 sufficiently to protect the protective wall 105 and the exit port 103 from slag.

In addition, in the present embodiment, the cooling means uses the cooling water, and for this purpose, a plurality of partitions 11 are installed in a zigzag form in the panel 10 so as to have a zigzag shape. At the beginning of the flow path 12 and the end of the flow path 12, the cooling water inflow pipe 13 and the cooling water discharge pipe 14 are respectively provided to form a structure for circulating the cooling water.

In order to fix the panel 10 to the housing 104 in close contact with the protective wall 105, a plurality of protruding members 20 protruding to the front side are installed at the front end of the housing 104. 10, a fastening member 21 having a hole 22 formed therein is installed at an outer side thereof so that the protruding member 20 is fitted therein, and a fastening pin 24 through a fastening hole 23 formed on the protruding member 20. This structure is fitted.

In this case, when the coupling pin 24 has a large number of coupling positions, the fixing force of the panel 10 is increased, but considering the work load and ease of manufacturing the device, the fastening member 21 is preferably placed on the top of the panel 10. Install four dogs, one on each side of the dog.

Accordingly, the fastening pin 24 fitted to the protruding member 20 blocks the fastening member 21 so that the detachment of the panel 10 can be prevented.

On the other hand, the protective device can easily perform the surface management of the protective wall 105 by filling the refractory 150 between the protective wall 105 and the panel 10, for this purpose, the refractory filling means is the panel 10 It includes a refractory filling tube 30 installed through the front and rear of the), and a lid 31 for blocking the inlet of the refractory filling tube 30.                     

Therefore, when the refractory 150 is injected into the filler tube 30 protruding toward the front of the panel 10, the refractory 150 is injected into the protective wall 105 and the panel through the filler tube 30. It will flow between (10) and fill it.

In this embodiment, it can be seen that the filling tubes are respectively installed on the left and right sides of the front panel 10 for faster refractory filling, the present invention is not particularly limited to the number of installation of the filling tube.

Hereinafter, the operation of the present invention will be described in detail with reference to FIGS. 4 and 5.

The panel 10, which is the present device, is installed in the housing 104 above the exit port 103. When the panel 10 is inserted into the housing 104, the protruding member 20 installed in the front of the housing 104 in the hole 22 of each fastening member 21 installed at the top and side of the panel 10 is provided. Will be fitted.

In this state, the operator fixes the panel 10 to the housing 104 by inserting the fastening pin 24 into the fastening hole 23 of the protruding member 20 protruding forward through the fastening member 21.

Then, if necessary, the refractory is opened by opening the lid 31 of the filling tube 30 and connecting the injection hose 32 to the filling tube 30 to inject the refractory 150 into the panel 10 and the protective wall 105. Flow into the empty space between the panel 10 and the protective wall 105 to achieve a perfect contact.

When the injection is completed, the injection hose 32 is removed from the filling tube 30 and the lid 31 is closed again to close the filling tube.                     

When the panel 10 is installed as described above, the coolant is circulated into the panel 10 through the coolant inlet pipe 13 and the coolant discharge pipe 14 installed in the front of the panel 10.

As described above, the panel 10 is maintained in a cooled state by the coolant circulated into the panel 10.

Therefore, even if the starting work is started through the tap opening 103 in this state, the protection wall 105 is protected from the high heat of the molten iron by the panel 10, so that the crack or dropping of the protecting wall 105 can be prevented.

In addition, a large amount of slag generated during closing operation of the exit port 103 by the end of the exit mud gun is stuck to the panel 10 placed in front of the protective wall 105, and the temperature difference of the panel 10 cooled by the cooling water. It is cooled by the natural drop or can be easily removed from the panel 10 even with a light impact.

Advantageous Effects of Invention According to the present invention as described above, there is an advantage in that the management of the protective wall is facilitated by the tap-hole protective wall protective device of the blast furnace.

In addition, the protection wall can be protected from high temperature and high temperature, thereby extending the life of the protection wall and reducing the time and effort required for repairing the protection wall.

In addition, it is possible to easily remove a large amount of slag generated when closing the exit port can reduce the safety accident and work load generated during the slag removal operation.

Claims (2)

A panel having a hollow structure inserted into and tightly inserted into a housing forming a protective wall of the blast furnace; A plurality of protruding members protruding to the front of the housing, a fastening member installed on the outside of the panel and having a hole formed to fit the protruding member, and a fastening hole formed on the protruding member to secure the fastening member. Panel fasteners comprising pins, A plurality of partition walls are installed in a zigzag form inside the panel to form a distribution path, and one side of the panel is provided with a cooling water inlet pipe and a cooling water discharge pipe for circulating the cooling water onto the distribution path, thereby cooling the panel. An exit barrier protection device of the blast furnace comprising a means. The method of claim 1, further comprising a refractory filling tube installed through the front and rear of the panel, and a lid for blocking the entrance of the refractory filling tube, so that the refractory can be filled between the protective wall and the panel. The outgoing protection wall protection device of the blast furnace, characterized in that.

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