JP2009173957A - Apparatus and method for removing slag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for removing slag, with which flexible removal of the slag corresponding to the state of slag distribution and changes of vessels into which charging molten metal is charged. <P>SOLUTION: The apparatus 40 for removing the slag includes: a slag collecting part 50 for scooping up the slag 2 on the molten metal 1; a slag collecting part turning device 60 for turning the slag collecting part 50 as shown in an arrow 20; and a slag collecting part vertically/horizontally shifting mechanism (6-9, 60) for moving the slag collecting part in the horizontal direction and in the perpendicular direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a slag removing device that scoops and removes slag on a molten metal, and a slag removing method using the slag removing device.

  In the conventional slag removal device for hot metal pretreatment, the hot metal pan is tilted by a dedicated tilting device so that the hot metal surface reaches the discharge part of the pan, and the slag floating on the hot metal is removed from the discharge part with a scraping plate. Scraping out.

  In general, when the slag floating on the hot metal in the hot metal ladle is discharged in this way after the hot metal pretreatment process, the efficiency is remarkably dependent on the skill of the driver who operates the slag removal device. In addition, the hot metal flows out to the slag spot together with the slag, causing problems such as product loss and damage to the slag spot.

  In order to solve this problem, in recent years, it has been proposed to scoop the slag inside the pan without using this tilting device while keeping the pan in a vertical state (Patent Document 1).

JP 2007-515554 A

  The method described in Patent Document 1 partially solves the problem of the conventional slag removing method of tilting the hot metal ladle and scraping out the floating slag. However, it cannot be said that the method described in Patent Document 1 achieves optimum slag removal particularly with respect to more flexible slag removal according to the state of slag distribution, changes in the container in which molten metal is placed, and the like. Therefore, this invention provides the slag removal apparatus which enables the removal of the slag more flexible according to the state of slag distribution, the change of the container which puts molten metal, etc.

  The present invention is as follows:

(1) A slag collection part for scooping up slag on molten metal, and a slag collection part swiveling device for turning the slag collection part,
And the slag collecting part turning device turns the slag collecting part in a direction along the surface of the molten metal.

(2) Slag collector vertical / horizontal movement mechanism for moving the slag collector horizontally and vertically,
The slag removing device according to item (1), further comprising:

(3) The slag collection part is composed of at least a first part and a second part,
The slag removing device further includes a sandwich swirling device that swirls at least one of the first and second portions, and the sandwich swirling device is a slag on the molten metal between the first and second portions. Squeezing and picking up at least one of the first and second parts in a direction along the surface of the molten metal,
The slag removing apparatus according to the above item (1) or (2).

  (4) Item (3) above, wherein the first and second parts constituting the slag collector are a combination of a slag collector and a plate or a combination of two slag collectors. The slag removal apparatus as described in.

(5) The slag removing device further includes a slag collecting unit tilting device that tilts the slag collecting unit, and the slag collecting unit tilting device is configured such that the collection port of the slag collecting unit is the molten metal or above Tilt the slag collection part so as to incline obliquely with respect to the slag,
The slag removing apparatus according to the above item (1) or (2).

(6) The slag removing device has a slag collection cooperating unit that cooperates with the slag collecting unit, and the slag collecting cooperating unit sandwiches the slag with the slag collecting unit, and converts the slag into the slag. Scoop the collector and / or scrape the slag on the slag collector;
The slag removing device according to the above item (5).

(7) An inner bottom portion of the slag collecting portion is inclined with respect to a horizontal plane, and an inner bottom portion of the slag collecting portion is an opening for separating slag and molten metal at a lower portion of the inclination. Having a part,
The slag removing device according to (5) or (6) above.

(8) The slag collection part is composed of at least first and second parts,
The slag removing device has a slag collecting part separating device for separating the first and second parts, and the slag collecting part separating apparatus is an inner bottom part of the first and / or second part with respect to a horizontal plane. Separating the first and second portions so that the inclination of
The slag removing apparatus according to any one of (5) to (7) above.

(9) A method for removing slag on the molten metal using the slag removing device according to any one of the above items (1) to (8), which includes the following steps (a) to (c):
(A) With the slag collecting unit turning device, the slag collecting unit is swung in a direction along the surface of the molten metal in a state where the slag collecting unit is not in contact with the slag, and the slag collecting unit is moved to a predetermined position. Placing,
(B) after step (a), lowering the slag collection part until the lower part of the slag collection part reaches or below the surface of the molten metal; and (c) after step (b) And scooping out the slag on the molten metal by the slag collecting part.

  (10) In the step (b), the slag collecting part is lowered until the slag collecting part comes into contact with the upper part of the slag on the molten metal, and the slag collecting part swirling device is used to make the slag collecting part as a whole. Swirling in a direction along the surface of the molten metal, pushing away the slag on the molten metal to expose the surface of the molten metal, and at the location where the molten metal is exposed, the slag collecting unit, the slag collecting unit The method according to item (9), comprising lowering until the lower part of the metal reaches the surface of the molten metal or below the molten metal.

  (11) The slag removing method according to (9) or (10), wherein the molten metal is hot metal that has been subjected to desiliconization, dephosphorization and / or desulfurization treatment.

(12) The slag removal device according to the above (3) or (4) is used to remove slag on the molten metal, according to any of the above (9) to (11). A method,
In the step (c), the slag collecting part turning device turns the slag collecting part in the direction along the surface of the molten metal as a whole to constitute the first and second slag collecting parts. Scraping a part of the slag on the molten metal by one of the parts, and turning the at least one of the first and second parts in a direction along the surface of the molten metal by the sandwiching and turning device, The method according to any one of (9) to (11) above, wherein the first and second portions sandwich and scrape the remainder of the slag on the molten metal.

  In the context of the present invention, the “slag collector” can have any structure that can scoop and collect slag on the molten metal, for example in the shape of a container, dish or the like for collecting slag. It is a part that has. This "slag collecting part" has an opening or a lattice-like part at the bottom and / or side surface that does not cause a problem when collecting slag, and separates the slag collected from the slag collecting part from the molten metal. May be promoted. In the present invention, the “molten metal” includes any metal in a molten state such as hot metal or molten steel.

  The slag removing device of the present invention includes a slag collecting unit for scooping out slag on molten metal, and a slag collecting unit swivel device. Here, the slag collecting unit turning device is a device for turning the slag collecting unit in a direction along the surface of the molten metal. The slag removing device of the present invention may further include a slag collecting unit vertical / horizontal moving mechanism for moving the slag collecting unit in the horizontal direction and the vertical direction.

  According to the slag removing device of the present invention, when slag is skimmed by the slag collecting unit, the skimming operation can be started from an arbitrary position. The slag on the molten metal is not necessarily uniformly distributed, and the slag may be unevenly distributed in a part of the region on the molten metal as the slag removal operation is performed a plurality of times. Therefore, in such a case, according to the slag collecting unit turning device of the present invention, the slag collecting operation by the slag collecting unit can be started from a desired position, and the removal of the slag on the molten metal can be made efficient.

  Further, in the hot metal preliminary treatment, powder is blown into the hot metal by an injection method or the like, so that the inner periphery of the hot metal pan may be partially reduced and deformed due to scattering of the hot metal at that time. Furthermore, the inner periphery in the hot metal ladle may be partially enlarged and deformed due to wear of the brick. Even in such a case, according to the slag collecting unit turning device of the present invention, the scooping operation can be started from a desired position, and the removal of the slag on the hot metal can be made efficient.

  In this regard, the method for removing slag on the molten metal using the slag removal device of the present invention includes: (a) a slag collection unit in a state where the slag collection unit is not in contact with the slag by the slag collection unit turning device; Swiveling in a direction along the surface of the molten metal, placing the slag collection part in place, (b) lowering the slag collection part until the lower part of the slag collection part reaches or below the surface of the molten metal, And (c) scooping out the slag on the molten metal by the slag collecting part.

  Moreover, according to the slag removal apparatus of this invention, a slag collection part can also be dropped to the surface of a molten metal, turning a slag collection part. In this case, the slag collecting part can be lowered to the surface of the molten metal while pushing out the slag on the molten metal by turning the slag collecting part.

  In this regard, the method of removing slag on the molten metal using the slag removal apparatus of the present invention is such that when the slag collector is lowered until the lower part of the slag collector reaches or below the surface of the molten metal. The slag collecting unit swirling device swirls the slag collecting unit as a whole along the surface of the molten metal, pushes the slag on the molten metal to expose the molten metal surface, and at the point where the molten metal is exposed, the slag The collector can include lowering until the bottom of the slag collector reaches or is below the surface of the molten metal.

  Here, the molten metal from which slag is removed using the slag removing apparatus of the present invention may be hot metal that has been subjected to desiliconization, dephosphorization and / or desulfurization treatment, in particular, desulfurization hot metal. If the slag remains on the hot metal when removing the slag from the desulfurized hot metal, the sulfur content will return from the slag to the hot metal, so that the slag can be effectively removed using the slag removing device of the present invention. Particularly preferred.

  In one example of the slag removal device of the present invention shown in FIG. 1, the slag removal device 40 of the present invention includes a slag collection unit 50 for scooping up the slag 2 on the molten metal 1 and a slag collection unit swivel device 60. Have. This slag collecting part turning device 60 can turn the slag collecting part 50 for scooping up the slag 2 on the molten metal 1 as a whole in the direction along the surface of the molten metal 1 as indicated by the arrow 20. it can.

  In the format shown in FIG. 1, the slag collecting unit turning device 60 also functions as a slag collecting unit vertical movement mechanism that can move the slag collecting unit 50 in the vertical direction (Z direction) as indicated by the arrow 22. is doing. The slag collecting unit turning device 60 is attached to a traversing device 9 that can be moved horizontally on the garter or rail 7 as indicated by an arrow 21. In addition, the garter or rail 7 has wheels 6, and thereby on the receiving beam 8 in a direction different from the traversing device 9 (in the form shown in FIG. 1, the direction from the front side to the back side in the figure or the opposite direction). It can be moved horizontally. In the form shown in FIG. 1, these wheels 6, the garter or rail 7, the receiving beam 8, and the traversing device 9 function as a horizontal movement mechanism that moves the slag collecting unit 50 in the horizontal direction (XY direction). In the slag removing device 40 shown in FIG. 1, the slag collecting unit 50 can be moved vertically and horizontally by such a slag collecting unit vertical / horizontal moving mechanism.

  When removing the slag 2 on the molten metal 1 using the slag removing device 40 of the present invention, first, the slag collecting unit turning device 60 causes the slag collecting unit 50 to be in contact with the slag 2 with the arrow 20. As shown, the slag collecting unit 50 is swung in a direction along the surface of the molten metal 1 so that the slag collecting by the slag collecting unit 50 can be started from a desired position.

  Thereafter, the slag collecting unit 50 is placed in the molten metal pan 3 by the traverse device 9 as the slag collecting unit horizontal moving mechanism and the slag collecting unit turning device 60 as the slag collecting unit vertical moving mechanism. The slag 2 on the molten metal 1 is scraped off. After scooping out the slag 2, the slag collection unit 50 is again removed from the molten metal pan 3 by the traversing device 9 as the slag collection unit horizontal movement mechanism and the slag collection unit turning device 60 as the slag collection unit vertical movement mechanism. The slag collecting unit 50 is placed in or on the slag pot 4 and the slag 2 scooped by the slag collecting unit 50 is discharged into the slag pot 4.

[First format]
In the first type of the slag removing apparatus of the present invention, the slag collecting unit is composed of at least the first and second parts, and the slag removing apparatus swivels at least one of the first and second parts. It further has a sandwiching and turning device. Here, the sandwiching and swirling device sandwiches and slags the slag on the molten metal between the first and second portions, so that at least one of the first and second portions is in a direction along the surface of the molten metal. Turn.

  Of course, both the first and second parts can be swiveled in a direction along the surface of the molten metal. Also, the first and second portions can be pivoted about the same axis or can be pivoted about different axes.

  In the 1st form of the slag removal apparatus of this invention, the 1st and 2nd part which comprises the slag collection part is the combination of a slag collector and a plate-shaped object, or the combination of two slag collectors. It may be. Here, this slag collector is a part which comprises the slag collection part, Comprising: It is a part which has shapes, such as a container shape for collecting slag, and a dish shape.

  According to the slag removing apparatus of the present invention, the slag can be reliably collected by turning the first and second portions to sandwich the slag on the molten metal.

  In this regard, a method for removing slag on molten metal using the first form of the slag removal apparatus of the present invention is provided by a slag collector swiveling device when scooping slag on molten metal by the slag collector. The slag collecting part is swirled in the direction along the surface of the molten metal as a whole, for example, at least 1/2 turn or at least one turn swirled, and one of the first and second parts constituting the slag collecting part By scooping off a part of the slag on the molten metal, and then swiveling at least one of the first and second parts in a direction along the surface of the molten metal by the sandwiching and swiveling device. The remaining portion of the slag on the molten metal can be scooped between the two portions.

  An example of the first form of the slag removal apparatus of the present invention may be as shown in FIG. Here, FIG. 2A is a top view of the slag collecting unit 100 on the molten metal 1 and the slag 2, and FIG. 2B is a perspective view of the slag collecting unit 100 of this example.

  In the example shown in FIG. 2, the slag collecting unit 100 is composed of a combination of a slag collector 101 and a plate-like body 102. The slag collector 100 composed of a combination of the slag collector 101 and the plate-like body 102 is generally a pan around the axis 110 as shown by arrows 121 and 122 by a slag collector swivel device. 3 can be swung in a direction along the surface of the molten metal 1 in the substrate 3. Also, the slag collector 101 and the plate-like body 102 are placed on the same shaft 110 so as to sandwich the slag 2 on the molten metal 1 as indicated by arrows 121 and 123 by the sandwiching and turning device, respectively. It can be swung in a direction along the surface of the molten metal 1 in a relatively opposite direction.

  Note that both the slag collecting unit turning device and the sandwiching turning device can have an arbitrary drive mechanism such as a hydraulic motor, a hydraulic cylinder, an electric motor, and a combination of an electric motor and a gear. Further, here, the sandwiching and turning device may also function as a slag collecting unit turning device.

  More specifically, the first type of slag removal apparatus of the present invention shown in FIG. 2 can be operated as shown in FIG. That is, as shown in FIG. 3 (a), the entire slag collecting unit 100 is swung around the axis 110 (arrow 131) by the slag collecting unit turning device on the pan 3 containing the molten metal 1. And 132) to determine the position at which to start the slag scooping operation.

  Next, as shown in FIG. 3B, after the entire slag collecting unit 100 is disposed at a position where the slag scooping operation is started, the slag collecting unit 100 is lowered.

  Thereafter, as shown in FIG. 3C, the slag collector 101 and the plate-like body 102 constituting the slag collecting unit 100 are swung in opposite directions around the axis 110 by the sandwiching swivel device (respectively arrows). 133 and 134), and the slag 2 on the molten metal 1 is sandwiched and collected as shown in FIG. 3 (d).

  Here, after the entire slag collecting part 100 is lowered to the surface of the molten metal 1 (FIG. 3B), the slag collector 101 and the plate-like body 102 are swung to sandwich the slag 2 (FIG. 3). (C) and (d)). However, after the entire slag collecting unit 100 is lowered to the surface of the molten metal 1 (FIG. 3B), the entire slag collecting unit 100 is further swung in the direction along the surface of the molten metal 1 by the slag collecting unit turning device. Then, the slag 2 on the molten metal 1 is roughly scooped up by the slag collector 101 (FIGS. 4A to 4D), and then the slag collector 101 and the plate-like body are sandwiched by the sandwiching swirler. It is also possible to swivel in the opposite direction to sandwich the remaining portion of the slag for reliable collection (FIGS. 3 (c) and 3 (d)).

  In this case, in addition to sandwiching and collecting the slag between the slag collector 101 and the plate-like body 102, the slag collector 100 is further swung and the slag collector 101 scoops the slag once. The slag on the molten metal can be collected a plurality of times by the slag collecting operation. In order to swirl the entire slag collecting unit 100 and scoop out the slag by the slag collector 101, for example, the entire slag collecting unit 100 can be rotated at least 1/2 turn and at least 1 turn.

  When the entire slag collecting unit 100 is lowered to the surface of the molten metal 1 (FIG. 3B), not only the entire slag collecting unit 100 is lowered to the surface of the molten metal 1 but also the slag collecting unit 100. The whole can be lowered to the surface of the molten metal 1 while being swung by the slag collecting unit swirling device. In this case, specifically, as shown in FIG. 5, the slag collecting unit 100 is lowered until the slag collecting unit 100 comes into contact with the upper part of the slag 2 on the molten metal 1 (FIG. 5A). The slag collecting unit 100 is swung in the direction along the surface of the molten metal 1 as a whole by the collecting unit turning device, and the slag 2 on the molten metal 1 is pushed to expose the surface of the molten metal (FIG. 5B and ( c)), and the slag collecting part 100 can be lowered at the location 1 ′ where the molten metal is exposed (FIG. 5D). According to this, the slag collecting part 100 can be lowered to the surface of the molten metal 1 while pushing away the slag 2 on the molten metal 1.

  Another example of the first type of the slag removing apparatus of the present invention is as shown in FIG. Here, FIG. 6A is a top view of the slag collecting unit 150 of this example.

  In this example shown in FIG. 6, the slag collector 150 is composed of a combination of two slag collectors 103 and 104.

  The slag collector 150, which is composed of a combination of the two slag collectors 103 and 104, as a whole, is moved by the slag collector swivel device around the axis 110 as indicated by arrows 141 and 142. It can be swung in a direction along the surface of the molten metal 1 inside. Also, the two slag collectors 103 and 104 are swung in opposite directions around the axes 111 and 112, respectively, as indicated by arrows 143 and 144, respectively, by means of a pinching swivel device, on the molten metal 1 Slag 2 can be inserted.

  When the slag collecting unit 150 as shown in FIG. 6 is used, if the slag collecting unit turning device for turning the slag collecting unit 150 as a whole is not provided as in Patent Document 1, multiple slag removal is performed. Even if the operation is performed, the area 190 where the slag cannot be removed by the two slag collectors 103 and 104 becomes relatively large as shown in FIG. On the other hand, when a slag collecting unit turning device for turning the slag collecting unit 150 as a whole is provided as in the slag removing device of the present invention, for example, the slag collecting unit 150 is turned 90 ° as a whole and 2 When the slag removing operation is performed a plurality of times, the area 191 where the slag cannot be removed by the two slag collectors 103 and 104 becomes relatively small as shown in FIG.

[Second format]
The 2nd form of the slag removal apparatus of this invention further has the slag collection part tilting apparatus which tilts a slag collection part. Here, the slag collecting unit tilting device tilts, for example, swings, the slag collecting unit such that the collecting port of the slag collecting unit enters obliquely with respect to the molten metal or the slag thereon.

  According to the slag removing device of the present invention, the slag collecting part is not pressed against the slag by causing the collecting port of the slag collecting part to incline obliquely with respect to the molten metal or the slag on the slag collecting part. The slag collecting part can be made to enter the lower side of the slag by cutting into the slag at the collecting port of the part.

  The 2nd form of the slag removal apparatus of this invention can have a slag collection cooperation part with which a slag removal apparatus cooperates with a slag collection part. Here, the slag collection cooperation unit sandwiches the slag with the slag collection unit, causes the slag collection unit to scoop the slag, and / or scrapes out the slag on the slag collection unit. This slag collection cooperation part can have arbitrary shapes, for example, may be a plate-shaped member.

  According to the slag removing apparatus of the present invention, the slag collecting cooperation unit can surely collect the slag at the slag collecting unit and remove the slag from the slag collecting unit.

  In the second type of the slag removing device of the present invention, the inner bottom portion of the slag collecting portion is inclined with respect to the horizontal plane, and the inner bottom portion of the slag collecting portion is formed in the lower portion of the inclination with the slag and the molten metal. And an opening for separating the two.

  According to the slag removing apparatus of the present invention, the liquid molten metal is collected in the lower part of the slope of the slag collecting part, and the liquid molten metal is discharged from the opening of this part, thereby obtaining a liquid state. Separation of molten metal and solid slag can be promoted.

  In the second type of the slag removing device of the present invention, the slag collecting unit is composed of at least the first and second portions, and the slag removing device separates the first and second portions. It can have a partial separator. Here, the slag collecting part separating device separates the first and second parts such that the inclination of the inner bottom part of the first and / or second part with respect to the horizontal plane is increased. Here, these first and second portions may be, for example, a combination of a slag collector and a plate-like body, or a combination of two slag collectors.

  According to the slag removing device of the present invention, the first and second parts are separated from the slag collecting part so that the inclination of the inner bottom part of the first and / or second part with respect to the horizontal plane is increased. The discharge of collected slag can be promoted. Moreover, depending on the case, the slag in a slag pot can also be grabbed by opening and closing the 1st and 2nd part with a slag collection part separation apparatus.

  An example of the second type of the slag removing apparatus of the present invention may be as shown in FIG. Here, FIG. 8 (a) is a front view of this example, FIG. 8 (b) is a side view of this example, and FIG. 8 (c) is a top view of the slag collecting section of this example. is there.

  In the example shown in FIG. 8, the slag collector 210 composed of the two slag collectors 203 and 204 is entirely moved along the surface of the molten metal as shown by the arrow 251 by the slag collector swirler. Can be swung in the direction.

  Further, in this example, the slag collecting unit 210 is swung around the shaft 201 as shown by an arrow 254 by the slag collecting unit tilting device, whereby the collecting port of the slag collecting unit 210 is melted. It can penetrate diagonally into the metal or the slag on it.

  Still further, in this example, the two slag collectors 203 and 204 that make up the slag collector 210 are separated by a slag collector separator and, as shown by arrows 252 and 253 around the axis 202, respectively, It can be swung. This can increase the angle of the inner bottom of the two slag collectors 203 and 204 with respect to the horizontal plane.

  Still further, in this example, as shown in FIG. 8 (a), the inner bottom portions 203 ′ and 204 ′ of the slag collector are inclined with respect to the horizontal plane, and as shown in FIG. 8 (c). Openings 203 "and 204" for separating slag and molten metal are provided near the lowermost side of the inner bottoms 203 'and 204'.

  Another example of the second type of the slag removing apparatus of the present invention may be as shown in FIG. Here, FIG. 9 (a) is a front view of this example, FIG. 9 (b) is a side view of this example, and FIG. 9 (c) is a top view of the slag collecting section of this example. is there.

  In this example shown in FIG. 9, the integrated slag collecting section 211 can be swung in the direction along the surface of the molten metal as indicated by an arrow 261 by the slag collecting section turning device as a whole.

  Further, in this example, the integrated slag collector 211 can be swung around the shaft 210 as shown by an arrow 262 by the slag collector tilting device, whereby the collection port 213 of the slag collector 211 is It is possible to infiltrate obliquely with respect to the molten metal or slag thereon.

  In the slag removing apparatus of this example, as shown in FIG. 10, a slag collecting cooperation unit 220 that cooperates with the slag collecting unit 211 can be provided. Here, the slag collection cooperation unit 220 sandwiches the slag with the slag collection unit 211, causes the slag collection unit 211 to scoop the slag, and / or scrapes the slag on the slag collection unit 211.

  When slag is pushed into the slag collection unit 211 using the slag collection cooperation unit 220, the slag is collected between the slag collection cooperation unit 220 and the slag collection unit 211 as indicated by an arrow 271 in FIG. The slag is pushed into the slag collecting unit 211 so as to sandwich the slag. Further, when scraping out the slag on the slag collection unit 211 using the slag collection cooperation unit 220, the slag collection cooperation unit 220 is changed to the slag collection unit 211 as indicated by arrows 272 and 273 in FIG. Move the slag from the back side to the collection port side.

It is a figure which shows the example of the installation which uses the slag collection part turning apparatus and slag removal apparatus of this invention. It is a figure which shows one example of the slag collection part of the slag removal apparatus of this invention. It is a figure which shows the example of operation | movement of the slag collection part of FIG. It is a figure which shows the example of operation | movement of the slag collection part of FIG. It is a figure which shows the example of operation | movement of the slag collection part of FIG. It is a figure which shows the other example of the slag collection part of the slag removal apparatus of this invention. It is a figure which shows the example of the slag removal area | region by the slag collection part of FIG. It is a figure which shows one example of the slag removal apparatus of this invention. It is a figure which shows the other example of the slag removal apparatus of this invention. It is a figure which shows the example of operation | movement of the slag removal apparatus of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Molten metal 2 Slag 3 Pan 4 Slag pot 6 Wheel 7 Garter 8 Receiving beam 9 Traverse device 40 Slag removal device 50, 100, 150, 210, 211 Slag collection part 60 Slag collection part turning apparatus 101, 103, 104 Slag collector 102 Plate-like body 220 Slag collection cooperation part

Claims (12)

A slag collecting part for scooping up the slag on the molten metal, and a slag collecting part turning device for turning the slag collecting part,
And the slag collecting unit turning device turns the slag collecting unit in a direction along the surface of the molten metal. A slag collector vertical / horizontal movement mechanism for moving the slag collector horizontally and vertically;
The slag removing apparatus according to claim 1, further comprising: The slag collecting part is composed of at least first and second parts,
The slag removing device further includes a sandwich swirling device that swivels at least one of the first and second portions, and the sandwich swirling device is a slag on the molten metal between the first and second portions. Squeezing and picking up at least one of the first and second parts in a direction along the surface of the molten metal,
The slag removal apparatus according to claim 1 or 2.   The slag removing device according to claim 3, wherein the first and second parts constituting the slag collector are a combination of a slag collector and a plate-like body, or a combination of two slag collectors. . The slag removing device further includes a slag collecting unit tilting device that tilts the slag collecting unit, and the slag collecting unit tilting device has a collecting port of the slag collecting unit with respect to the molten metal or slag thereon. Tilting the slag collection part so as to invade diagonally,
The slag removal apparatus according to claim 1 or 2. The slag removing device has a slag collection cooperation unit that cooperates with the slag collection unit, and the slag collection cooperation unit sandwiches the slag with the slag collection unit, and the slag is collected in the slag collection unit. Skimming and / or scraping slag on the slag collection section,
The slag removing device according to claim 5. An inner bottom portion of the slag collecting portion is inclined with respect to a horizontal plane, and an inner bottom portion of the slag collecting portion has an opening for separating the slag and the molten metal in a lower portion of the inclination. ,
The slag removing apparatus according to claim 5 or 6. The slag collecting part is composed of at least first and second parts,
The slag removing device includes a slag collecting unit separating device that separates the first and second portions, and the slag collecting unit separating device is an inner bottom portion of the first and / or second portion with respect to a horizontal plane. Separating the first and second portions so that the inclination of
The slag removing apparatus according to any one of claims 5 to 7. The method of removing the slag on the said molten metal using the slag removal apparatus in any one of Claims 1-8 including the following process (a)-(c):
(A) The slag collecting unit swirling device turns the slag collecting unit in a direction along the surface of the molten metal in a state where the slag collecting unit is not in contact with the slag, and puts the slag collecting unit in a predetermined position. Placing,
(B) after step (a), lowering the slag collection part until the lower part of the slag collection part reaches or below the surface of the molten metal; and (c) after step (b) And scooping out the slag on the molten metal by the slag collecting part.   In the step (b), the slag collecting part is lowered until the slag collecting part comes into contact with the upper part of the slag on the molten metal, and the slag collecting part is moved as a whole by the slag collecting part turning device. The surface of the molten metal is swung in a direction along the surface of the molten metal to push out the slag on the molten metal to expose the surface of the molten metal, and at the location where the molten metal is exposed, the slag collecting unit is disposed below the slag collecting unit. 10. A method according to claim 9, comprising lowering until reaching or below the surface of the molten metal.   The slag removal method according to claim 9 or 10, wherein the molten metal is hot metal subjected to desiliconization, dephosphorization and / or desulfurization treatment. The method according to any one of claims 9 to 11, wherein the slag removal device according to claim 3 or 4 is used to remove slag on the molten metal.
In the step (c), the slag collecting part turning device turns the slag collecting part in the direction along the surface of the molten metal as a whole to constitute the slag collecting part. Scraping a part of the slag on the molten metal by one of the parts, and swirling at least one of the first and second parts in a direction along the surface of the molten metal by the sandwiching and swiveling device; The method according to any one of claims 9 to 11, wherein the first and second portions sandwich and scrape the remainder of the slag on the molten metal.

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