KR20030042083A - A throw apparatus for refinery melted iron in ladle - Google Patents

Abstract

PURPOSE: A wire throwing apparatus for refining molten steel in ladle is provided to remove sulfur by throwing calcium silicon wire into molten steel received into the ladle and secure cleanliness of molten steel by adding calcium to molten steel. CONSTITUTION: The wire throwing apparatus for refining molten steel in ladle comprises a body part at the lower side of which an inner nozzle(111) connected to an inner guide pipe(110) is installed in such a way that the inner nozzle(111) is injected into molten steel of the ladle, and in which an outer nozzle(113) connected to an outer guide pipe(112) is installed at the outer side of the inner nozzle(111); a control part comprises a gas inlet pipe(120) connected to the outer guide pipe(112), and a sensing nozzle(122) for sensing pressure installed on the gas inlet pipe(120) to and connected to a control device(124) through wire(123a), wherein the control device(124) is connected to driving motor(104), roll and control wire(123b); and a driving part comprising an arm(100) on which a lowerable and liftable roll(101) is installed at the upper side of the inner and outer guide pipes(110,112) of the body part, and a driving chain(102) connected to the driving motor(104) and connected to one side of the arm(100).

Description

Ladle steel refining wire feeding device {A THROW APPARATUS FOR REFINERY MELTED IRON IN LADLE}

The present invention relates to a ladle steel refining wire input device for adding a silicon silicon wire in the molten steel received in the ladle to remove sulfur (S), and to add calcium (Ca) to ensure cleanliness of the molten steel. .

In the apparatus for injecting a wire into a conventional known molten steel, as shown in FIG. 1, a bottom burring nozzle into which a molten steel stirring bottom burring gas 12 flows under the ladle 10 where molten steel is received. (11) is provided, and the wire 16, the calcium powder 17 is embedded through the guide pipe 14, the ladle 10 is formed in the molten steel is injected into the molten steel through the roll (15).

In the apparatus for injecting the wire into the molten steel as described above, the molten steel agitating the bottom bubbling gas 12 through the bottom bubbling nozzle 11 under the molten steel ladle 10 to stir the molten steel, When the solidified slag layer 13 in the upper part of the molten steel is crushed by stirring, the wire 16 is drawn out while the roll 15 rotates through the wire inlet guide pipe 14 installed in the upper part of the slag layer to be introduced into the molten steel. .

However, such a conventional wire feeding device, the bottom buffing gas for molten steel stirring flowing into the bottom of the ladle 10 in order to break the slag layer 13 and stably insert the wire 16 in the slag layer 13. The wire 16 does not prevent the wire 16 from being deeply introduced into the molten steel, and the wire dissolved in the molten steel by the bottom buffing gas 12 flowing from the bottom of the ladle 10 and floating upward. There was a lot of problems, such as calcium powder 17 does not remain in the molten steel, the flotation is promoted to the upper slag layer 13 together with the gas, the charging efficiency is extremely reduced.

The present invention has been made in order to improve the conventional problems as described above, the object is to allow the calcium-silicon wire deeply injected into the interior of the molten steel, the calcium powder does not float to the upper slag layer inside the molten steel To provide a molten steel refining wire input device that can be added stably.

1 is an installation state of a typical trolley fixing creep.

2 is a schematic configuration diagram of a molten steel refining wire input device according to the present invention.

Figure 3 is an installation configuration of the molten steel refining wire input device to be put into the ladle according to the present invention.

Figure 4 is an injection state of the molten steel refining wire of the present invention.

Figure 5 is a view showing the input state of the wire passing through the guide pipe of the present invention.

Explanation of symbols on the main parts of the drawings

10 ... ladle 14 ... guide pipe

16.Wire 90 ... Body

100 ... arm 104 ... drive motor

110, 112 Inner and outer guide pipe 111,113 Inner and outer nozzle

120 gas inlet pipe 121 automatic valve

122 Detection nozzle 124 Control unit

125 Flow control valve 126 Control unit

127.Driver

As a technical means for achieving the above object, the present invention, the inner nozzle is installed in the lower side of the ladle to be introduced into the molten steel of the ladle, the outer guide pipe and the outer nozzle is installed on the outside is installed A body portion;

A gas inlet pipe is delivered to the external guide pipe, and a detection nozzle is installed at the gas inlet pipe to be communicated with a control device through a conductive wire, and the control device includes a control motor which is communicated with a driving motor, a roll, and a control lead;

And an arm on which an elevating roll is installed above the inner and outer guide pipes of the body portion, and a driving unit on which one side of the driving chain is extended.

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

Figure 2 is a schematic configuration diagram of a molten steel refining wire input device according to the present invention, Figure 3 and Figure 4 is an installation configuration diagram of the molten steel refining wire input device to be put into the ladle according to the present invention and the injection state diagram of the molten steel refining wire. Referring to FIG. 1, the wire 16 into which the calcium powder 17 is embedded is injected into the molten steel through the roll 15 through the guide pipe 14 on the ladle 10 where the molten steel is received. Is installed.

In addition, the lower side of the body portion 90 introduced into the molten steel of the ladle 10, the inner guide 114 and the guide pipe 110 is installed to the outside to protect the inner guide pipe 110 and the outer guide pipe 112 and The inner nozzle 111 is installed, and the outer guide pipe 112 and the outer nozzle 113 are installed at the outside thereof, and the gas inlet pipe 120 is automatically installed at the outer guide pipe 112. A valve 121, a flow control valve 125, and a detection nozzle 122 for detecting pressure are installed to be extended to the control device 124 through the conductive wires 123a and 123b, and the control device 124 is driven. The control part 126 which is extended with the motor 104, the roll 15, and the control lead 123b is provided.

Subsequently, the arm 100 on which the lifting roll 101 is installed above the inner and outer guide pipes 110 and 112 of the body portion 90 and the driving chain which is extended to the driving motor 104 on one side thereof. It consists of the structure in which the drive part 127 to which the 102 is spoken is provided.

114, which is not described in the drawings, is a refractory installed outside to protect the inner guide pipe 110 and the outer guide pipe 112.

Referring to the operation and effect of the present invention made of such a configuration as follows.

2 to 5, when starting the wire 16 into the molten steel of the ladle, the detection of the high-pressure gas is injected by the opening of the automatic valve 121 installed in the gas inlet pipe 120 When the flow rate and pressure are measured at the nozzle 122 and the signal is sent to the control device 124 through the conductive wire 123a, the driving motor 104 is lowered by the control action of the control device 124. After that, the roll 15 of the wire feeding device is rotated and the wire 16 drawn therefrom is introduced into the molten steel through the inner guide pipe 110 and the inner nozzle 111 of the body part. At this time, the gas of the high pressure in the gas inlet pipe 120 is injected through the outer guide pipe 112 and the outer nozzle 113 to prevent the closing (clogging) of the inner nozzle (11).

While the wire 16 is introduced into the molten steel as described above, the detection nozzle 122 installed in the gas inlet pipe 120 continuously measures the injection pressure and the flow rate of the gas and sends the signal to the control device 124. By sending, the wire 16 is stably injected into the molten steel while preventing the clogging of the inner and outer nozzles 111 and 113.

On the other hand, the inner guide pipe 110 and the outer guide pipe 112 through which the wire 16 is introduced through the inner and outer nozzles 111 and 113 are deeply introduced into the molten steel to allow the wire 16 to enter. By drawing out, the calcium powder dissolved with the wire 16 is moved again along the molten steel that is moved to the lower portion of the molten steel, so that the time for staying in the molten steel becomes longer, thereby ensuring the removal of sulfur in the molten steel and the cleanness of the molten steel. It is.

According to the molten steel refining wire input device of the present invention as described above, the calcium-silicon wire can be deeply introduced into the inside of the molten steel through the inner and outer guide pipe, the calcium powder does not rise to the upper slag layer molten steel It can be added stably in the interior of the molten calcium powder has a long time to stay in the molten steel has an excellent effect to further secure the sulfur removal and molten steel in the molten steel.

While the invention has been shown and described with respect to particular embodiments, it will be appreciated that the invention can be modified and modified in various ways without departing from the spirit or scope of the invention as set forth in the following claims. Those skilled in the art will want to know easily.

Claims (3)

In the molten steel refining wire input device in which the wire 16, which is embedded with calcium powder 17, is injected into the molten steel through the roll 15 through the guide pipe 14 on the ladle 10 where molten steel is received. , The inner nozzle 111 and the inner nozzle 111 protruded are installed at the lower side to be introduced into the molten steel of the ladle 10, and the outer guide pipe 112 and the outer nozzle 113 protruded from the outside thereof are installed. Section 90; The gas inlet pipe 120 is delivered to the outer guide pipe 112, and a detection nozzle 122 is installed in the gas inlet pipe 120 to detect pressure. The controller 124 is speeched, and the control device 124 includes a controller 126 which is speeched with the driving motor 104, the roll 15, and the control lead 123b; An arm 100 having an elevating roll 101 installed above the inner and outer guide pipes 110 and 112 of the body portion 90, and a driving chain 102 that is protruded from the driving motor 104 to one side thereof. Ladle steel refining wire input device, characterized in that it comprises a drive unit 127 is speech. The method of claim 1, wherein the refractory 114 is installed on the outside to protect the inner guide pipe 110 and the outer guide pipe 112, ladle steel refining wire input device. According to claim 1, The gas inlet pipe 120, the automatic valve 121 and the flow control valve 125 is provided integrally with the detection nozzle 122 for detecting the pressure is controlled through the wire 123a Ladle steel refining wire input device characterized in that the speech.