KR20020090258A - Apparatus and method for controling discharge of slag to easily control tap hole - Google Patents

Abstract

PURPOSE: An apparatus and a method for controlling discharge of slag to easily control tap hole are provided to prevent foreign materials from being stuck to the surface of the tap hole and on the lower part thereof during discharging of molten materials by controlling construction method of the tap hole and slag level. CONSTITUTION: The apparatus and a method for controlling discharge of slag to easily control tap hole comprises a tap hole molten iron discharge part(31) comprising a lower bottom(4) of the tap hole surface(3) which is horizontally structured to prevent sticking of foreign materials; a foreign material sensing part(41) for sensing runner level of slag, a foreign material generated by molten materials discharged through the tap hole molten iron discharge part(31); a control part(60) for determining whether to open or close air line electronic valves(49,49') by receiving level signals sensed at the foreign material sensing part(41); and a foreign material discharge part(51) which is installed at a slag discharge port(26) to control discharge of a foreign material of slag by being operated by the air line electronic valves(49,49') that are determined to be opened or closed by the control part(60).

Description

Slag control device and control method for easy exit management {APPARATUS AND METHOD FOR CONTROLING DISCHARGE OF SLAG TO EASILY CONTROL TAP HOLE}

The present invention relates to a slag control device and a control method for easy outlet management, and more specifically, to control the outlet construction method and the slag level, and in advance that foreign matter is fixed to the outlet surface and the lower part when the melt is discharged. The present invention relates to a slag control device and a control method which can easily manage outlets.

Generally, as shown in FIGS. 1 and 2, the melt 1 of the furnace (not shown) is ejected to the large bathway 8 covered with the spout cover 7 through the opening port 2 opened. At this time, the foreign matter 6 accumulates on the tap opening surface 3 and the tap opening lower portion 4 in the process of ejecting, and thus interferes with the closing operation of the tap opening 2 by the mud gun 5. Therefore, in the related art, foreign matters such as solidified slag, sand, and attachment lines accumulated on the tap-out surface 3 before the closing operation of the tap-out opening 2 can be adhered to the tap-out surface 3. ) Was manually removed by a worker using a round bar.

At this time, the removal work of foreign substances (6) accumulated in the outlet port (2) was exposed to the high temperature and dust generated by the outlet port (2), scattered slag, molten iron, there was a risk of safety accidents such as burns or gas poisoning .

In order to solve the above-mentioned conventional problems, conventionally, as shown in FIG. 3, the removal device 9 of the lower part of the outlet port 2 and the foreign matter 6 is installed in the center of the outlet port 2, and the fixed base ( 10) and the rotary shaft 11 is installed, the electric motor 12 is attached to rotate the rotary shaft 11, the guide cell 13 on the upper end of the rotary shaft 11, the angle of the exit surface (3) It is attached at an angle so as to fit in.

An air cylinder 14 is attached to the guide cell 13, and a burner body 15 and a burner nozzle 16 are attached to the tip of the air cylinder 14. Electromagnetic valves 19, 19 ′, 20, 20 ′ are attached to each of the air lines 18, 18 ′ and the gas lines 17, 17 ′ connected to the air cylinder 14 and the burner body 15. It is configured to control the air and gas supply automatically, and the limit line (22, 23) is installed in the running portion 21 of the cylinder 14 of the guide cell 13 by the limit signal gas line There is provided a port opening foreign matter removing device 9 configured to open and close the electronic valves 19, 19 ', 20, and 20' attached to the 17 and 17 'and the air lines 18 and 18'.

However, such a conventional foreign matter removal device must continuously dissolve foreign matters attached frequently during the ship work, and a difference occurs depending on the degree of attachment, so that the complete foreign matter dissolving work is not performed, and it is continuously exposed to the melt. It causes mechanical loss by heat and causes maintenance loss due to the abnormality of the mechanical device and frequent failure by the melt that is scattered upon closing, so it is highly dangerous due to the use of oxygen and can go to the state of non-closure when the attachment foreign material removal device is abnormal. As a result, workers are exposed to high heat and dust fugitive slag and molten iron generated at the exit, causing burns or gas poisoning.

The present invention has been made to solve the above problems, and as a means for removing the foreign matter with the tap opening generated when the molten iron is drawn out in the furnace, the bottom of the tap opening in preparation for the lower bottom of the tap opening surface of the horizontal structure and the high level slag It is easy to manage the exit port to control slag discharge automatically by consisting of the outlet molten iron discharge part equipped with fine ceramics and cooling jacket, the detection unit for measuring slag level, the automatic foreign material discharge part for discharging foreign substances and the control unit. It is an object of the present invention to provide a slag control method and apparatus.

1 is a perspective view showing a state in which a general starting work is made;

Figure 2 is a perspective view showing a foreign material removal apparatus of the prior art outlet;

3 is a cross-sectional view schematically showing a conventional starting operation and slag discharge operation;

Figure 4 is an overall configuration showing the overall configuration of the slag control device easy to manage the outlet according to the present invention;

Figure 5a is a perspective view of the foreign matter detection unit of the slag control device easy to manage the outlet according to the present invention;

Figure 5b is a perspective view of the foreign matter discharge portion of the slag control device easy to manage the outlet according to the present invention;

Figure 6 is a working cross-sectional view showing an operation state of the slag control method and the device easy to manage the outlet according to the present invention;

7 is a flowchart showing a process of the slag control method by the tag control apparatus easy to manage the outlet according to the present invention.

♣ Explanation of symbols for main part of drawing ♣

1: Charter 2: Outlet port 3: Outer port surface 4: Outer port bottom surface 5: Mud gun

31: Charter discharge part 41: Foreign substance detection part 51: Foreign substance discharge part 59: Air line

32: Fine ceramic tm 33: Cooling jacket 50: Rotating shaft 49: Electronic valve

In order to achieve the above object, the present invention is a molten iron outlet portion consisting of the outlet bottom surface of the outlet bottom surface of the horizontal structure so as to prevent the adhesion of foreign matter to the bottom bottom of the outlet sphere;

A foreign matter detection unit for detecting the turbidity level of slag which is a foreign matter generated by the melt discharged through the molten iron discharge unit;

A control unit which determines whether to open or close an air line electromagnetic valve in response to the level signal detected by the foreign matter detection unit;

It provides a slag control device that is easy to manage the outlet opening, characterized in that consisting of the automatic foreign matter discharge portion installed in the slag outlet to operate by the air line electromagnetic valve determined by the control unit to control the discharge of the slag foreign matter.

In addition, the present invention comprises a cooling device capable of cooling the fine ceramics and the exit surface in order to prevent the erosion of the exit protection wall and the cracks that may occur when closing the mud gun as the bottom of the exit surface is formed in a straight shape. Provide a charter discharge.

On the other hand, the foreign matter detection unit of the slag control device easy to manage the outlet according to the present invention is formed in both sides of the shanghai-type cylinder having a support protrusion on both sides while moving in accordance with the foreign matter level of the large waterway; Including a fixed cylinder having a straight guide hole is formed in both sides so that the support protrusion is inserted to move up and down, and the detection rod is fixed to the upper end of the fixed cylinder to detect the contact of the shanghai-type cylinder inserted into the fixed cylinder; It is composed.

In addition, the foreign matter automatic discharge portion of the slag control device easy to manage the outlet according to the present invention and the protective cover is installed in the lower support, the air cylinder is inserted into the inner space of the protective cover is fixed to the support at the same time as the protective cover And, it is fixed to the bottom of the air cylinder is characterized in that it comprises a foreign matter level control plate to operate up and down.

On the other hand, the present invention comprises the steps of separating the slag and molten iron by opening the outlet and discharging the molten iron after preparing the operation of the slag control device,

When the slag and the molten iron are separated, the foreign matter detection unit of the slag control device moves to the surface of the large hot water and detects the foreign matter to determine HIGH / LOW;

When the foreign material is detected and the detection unit signal is 'LOW', the molten iron is discharged and fed back into the step of separating slag and molten iron. When the signal of the detection unit is 'HIGH', the controller opens the air supply valve. Opening the level control plate of the foreign substance discharge part of the slag control device to discharge the foreign substances;

Determining whether the outlet is closed when the foreign substance is discharged;

If the outlet is closed, the slag control device according to the present invention stops the original position and then closes the outlet, and if the outlet is kept open, the molten iron is discharged to separate the slag and the molten iron. It provides a slag control method that is easy to manage the outlet, characterized in that consisting of a step,

In addition, in the slag control method for easy management of the exit port according to the present invention, when the slag and molten iron is separated, the foreign matter detection unit of the slag control device moves to the surface of the large hot water to detect the foreign matter to determine the high / low If the slag, which is a foreign substance on the molten iron of the large hot water, exceeds the horizontal bottom bottom level of the molten iron discharge part, it is determined as 'HIGH', and if it does not exceed the horizontal bottom bottom level, the step includes determining 'LOW'. Characterized in that the configuration.

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

Figure 4 is an overall configuration showing the overall configuration of the slag control device easy to manage the outlet opening according to the present invention, Figure 5a is a combined perspective view of the foreign matter detection unit of the slag control device easy to manage the outlet port according to the present invention, Figure 5b is a combined perspective view of the foreign material discharge portion of the slag control device easy to manage the outlet according to the present invention.

As shown in FIG. 4, the outlet port molten iron discharge part 31 has a horizontal structure in which the bottom bottom 4 of the outlet port surface 3 has a horizontal structure so as to prevent foreign matter from adhering to the bottom surface 4 of the outlet port 3. At the same time, the bottom surface of the tap opening surface 4 is formed in a straight shape, so that the fine ceramics 32 and the tap opening surface can be cooled to prevent the erosion of the tap opening 2 and the mud gun closing. It consists of the cooling apparatus 33 which exists.

When the molten iron taps out through the above-described molten iron outlet 31, the molten iron 1 moves along the large bath 8, and the slag 25, which is an unavoidable impurity, differs from the molten iron 1 by a specific gravity difference. As a result, the molten iron (1) in the large hot water sinks to the lower of the large hot water, and the slag (25) rises to the upper part. At this time, the slag (25) and the molten iron (1), which are injured foreign matters, are easily discharged. Large hot water block 24 is installed below the slag outlet 26,

When the slag layer is thickened by the large hot water block 24, the slag, which is a foreign substance generated by the melt discharged through the molten iron discharge part 31, is shown in FIG. 5A for level detection. The foreign matter detection unit 41 for detecting the water level of 25 is fixed to the rotating shaft 50 is installed on the slag outlet 26,

The foreign matter detection unit 41 is moved in accordance with the foreign matter level of the large bath, while the support protrusions 47 and 47 'are formed at both sides, the shank-type cylinder 46 accommodates the buckle 45 for the buoyancy at the bottom. And a cylindrical cylinder 48 and support cylinders 47 and 47 'formed at both sides of the shanghai cylindrical cylinder 46, and having a straight cylinder formed with straight guide holes 44 and 44' at both sides thereof to move up and down. 43) and a detecting rod 42 for detecting whether the shank-type cylindrical cylinder 46 inserted into the fixed cylinder 43 is contacted.

As shown in FIG. 4, the slag outlet 26 is operated by an airline electromagnetic valve 49 and 49 ′ in which opening and closing is determined by a signal of the foreign matter detection unit 41 to control the discharge of slag that is a foreign matter. The foreign substance discharge unit 51 is installed,

As illustrated in FIG. 5B, the foreign substance discharge unit 51 is connected to the air supply and discharge electronic valves 49 and 49 'which operate according to the signal of the foreign substance detection unit 41 to supply air to the air cylinder 54. Of a pair of flexible hoses 59 and 59 'connected to supply the air supply and discharge pipes 56 and 56' of the support 52 and the support 52 for supporting and fixing the whole foreign matter discharge unit 51. An air cylinder 54 inserted into an inner space of a protective cover 53 installed at a lower portion thereof and fixed to the support 52 with bolts / nuts 57 and 57 'at the same time as the protective cover 53; It is configured to include a foreign material level control plate 55 is fixed to the lower end of the cylinder 54 by bolts / nuts 58, 58 '.

6 is a cross-sectional view showing a state in which the slag control device is easy to manage the outlet opening according to the present invention installed and acting.

As shown in FIG. 6, the molten iron discharge part 31 constitutes the bottom of the outlet opening surface from the inclined type to the straight shape 4, while preventing the erosion by the slag 25 under the outlet opening 2. In order to install a fine ceramics 32 having high resistance to erosion and excellent heat resistance and abrasion resistance to the slag 25 contact portion 4 ', a cooling jacket 33 is installed to increase the cooling effect.

The foreign matter detection unit 41 is rotatably installed by the rotating shaft 50 in front of the foreign matter discharge port 26 so as to detect the water level of the slag 25 discharged from the molten iron discharge unit 31.

The foreign matter discharge unit 51 is fixed to the foreign matter discharge port 26 to open and close the foreign matter discharge port 26 according to the signal of the foreign matter detection unit 41.

Hereinafter, the operation of the slag control device that is easy to manage the exit port according to the present invention configured as described above will be described in detail.

7 is a flowchart showing a process of the slag control method by the tag control apparatus easy to manage the outlet according to the present invention.

As shown in Figure 7, the slag control method according to the present invention, after preparing the operation of the slag control device according to the present invention by opening the outlet (2) and discharge the molten iron (1) by slag 25 and molten iron (1) will be separated. At this time, after checking the coolant water passing state and the starting surface (3) construction state of the exit protection wall cooling jacket 33 before starting the starting operation, the starting operation is started when there is no abnormality.

When the slag 25 and the molten iron 1 is separated, the foreign matter detection unit 41 of the slag control device of the present invention moves to the surface of the large bath 8 using the rotating shaft 50 to detect the foreign matter and thus high / low Will decide. At this time, when the slag 25 is filled in the tap water 8 to the lower surface of the outlet port 2, the foreign material detection unit 41 linearly moves the upper and lower linear motion cylinders 46 of the foreign material detection unit 41 upward. The detection signal is transmitted by contacting the detection rod 42.

When the signal of the foreign matter detection unit 41 that detects the foreign matter is 'LOW' is fed back to the step of separating the slag and the molten iron by discharging the molten iron,

When the signal of the foreign matter detection unit 41 is' HIGH ', the air cylinders 54 of the foreign matter discharge unit 51 of the slag control device are operated by opening the air supply valves 49 and 49' from the control unit. The control plate 55 is opened to discharge the slag that is foreign matter.

When the foreign substance is discharged, the up and down linear motion cylinder 46 descends to the bottom, and when the detection rod 42 detects LOW, the controller opens the valves of the electromagnetic valves 49 and 49 'attached to the air cylinder 54. By advancing the air cylinder 54 to close the foreign material level adjusting plate 55 to stop the slag 25 discharged to refill the slag 25 in the large hot water (8).

At this time, the criteria for detecting the foreign matter to determine the high / low is that the slag 25, which is the foreign matter on the molten iron 1 of the large bath 8, may exceed the level of the horizontal bottom bottom 4 of the molten iron discharge part 31. The case is determined as 'HIGH' and if it does not exceed the horizontal bottom level, it is determined as 'LOW'.

This step is made continuously and automatically until the end of the starting work is to prevent foreign matter adhered to the starting surface.

In addition, if the discharge of the foreign material is repeatedly made and the exit opening (2) is continuously opened to determine whether the exit opening is closed, the molten iron (1) is discharged by separating the slag 25 and the molten iron (1) feedback ( On the other hand, if the exit port 2 is closed, the foreign matter detection unit 41 of the slag control device according to the present invention is returned to the outside of the large waterway 8 by the rotation shaft 50 and then the exit port is closed by the mud gun. Done.

The present invention is composed of an outlet molten iron discharge unit having a fine ceramic and cooling jacket, a detection unit for measuring the slag level, and the foreign substance automatic discharge unit and control unit for discharging the foreign substances to automatically control the slag discharge by attaching foreign substances of the discharge port At the same time, it is possible to reduce maintenance losses due to abnormality and frequent failures of mechanical devices caused by slag, and to prevent the risk of safety accidents for workers.

Claims (6)

The outlet port molten iron discharge part 31 which consists of the outlet opening surface 3 and the lower bottom 4 which consists of a horizontal structure so that the adhesion of a foreign material may be prevented, The foreign matter detection unit 41 for detecting the water level of the slag that is the foreign matter generated by the melt discharged through the outlet molten iron discharge unit 31 and A control unit 60 for determining whether to open or close the air line electromagnetic valves 49 and 49 'by receiving the level signal detected by the foreign matter detection unit 41; It is characterized by consisting of the foreign matter discharge portion 51 installed in the slag discharge port 26 to control the discharge of the slag which is foreign matter by operating by the air line electromagnetic valve 49, 49 'is determined by the control unit 60 is opened and closed. Slag control device that can easily manage the outlet. The method of claim 1, The molten iron discharge part 31 has a fine ceramics 32 and a tap hole surface in order to prevent cracks that may occur during the erosion of the guard wall 2 and the mud gun closing as the tap bottom surface 4 has a straight bottom. Slag control device easy to manage the outlet, characterized in that it comprises a cooling device (33) capable of cooling (3). The method of claim 1, The foreign matter detection unit 41 is moved in accordance with the foreign matter level of the large bath, while the support protrusions 47 and 47 'are formed at both sides, the shank-type cylinder 46 accommodates the buckle 45 for the buoyancy at the bottom. and, A fixed cylinder 43 having straight guide holes 44 and 44 'formed at both sides thereof so that the support protrusions 47 and 47' formed at both sides of the shanghai cylindrical cylinder 46 are inserted and moved up and down; Outgoing port management, characterized in that it comprises a detection rod 42 is fixed to the upper end of the fixed cylinder 43 to detect the contact of the shank-dong type cylinder 46 inserted into the fixed cylinder 43; Easy to control slag. The method of claim 1, The foreign substance discharge portion 51 is a protective cover 53 is installed below the support 52, An air cylinder 54 inserted into an inner space of the protective cover 53 and fixed to the support 52 at the same time as the protective cover 53; Slag control device easy to manage the outlet, characterized in that it comprises a foreign matter level control plate 55 is fixed to the lower end of the air cylinder (54). Separating the slag and the molten iron by opening the outlet of the furnace and discharging the molten iron; When the slag and the molten iron are separated, the foreign matter detection unit of the slag control device moves to the surface of the large tap water to detect the foreign matter to determine a high / low slag level; When the foreign material is detected and the detection unit signal is 'low', the molten iron is discharged to feed back the slag and the molten iron, and when the signal is high, the control unit opens the air supply valve. Opening the level control plate of the foreign substance discharge part of the slag control device to discharge the foreign substances; Determining whether the outlet is closed when the foreign substance is discharged; If the outlet is closed, the slag control device according to the present invention stops the original position and then closes the outlet, and if the outlet is kept open, the molten iron is discharged to separate the slag and the molten iron. Easy slag control method characterized in that consisting of the steps to the outlet management. The method of claim 5, When the slag and the molten iron is separated, the foreign matter detection unit of the slag control device moves to the surface of the large tap water and detects the foreign matter to determine 'high / low'. Determining the slag level as 'high' if the level is exceeded, and determining the slag level as 'low' if it does not exceed the horizontal bottom floor level. Easy slag control method.