JPH027863Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial technical field Regarding the flux charging device of the present invention, more specifically, it is used for dephosphorization and desulfurization during secondary refining performed in a ladle after primary blowing in a converter. , relates to a device for introducing flux for denitrification.

Previous technology and its problems The conventional method of injecting flux into molten steel during secondary refining, which is added to molten steel taken out of a converter and stored in a ladle, requires a separately installed flux injection facility or flux injection facility. It is customary to use However, all of the above-mentioned facilities are large-scale and not only require a huge amount of construction funds, but also require time-consuming transportation of the ladle to the flux addition facility, as well as a large amount of time spent transporting the ladle. This has caused problems such as a drop in the temperature of the molten steel. The present invention aims to solve these problems that occur with the conventional flux injection method.

Purpose of the invention The purpose of the invention is to install a device adjacent to a slag removal device installed in a processing plant where secondary refining is carried out, and to introduce flux as soon as the slag is removed from the top surface of the molten steel in the ladle. The object of the present invention is to provide an economical flux injection device that not only saves labor and time but also prevents a drop in the temperature of molten steel.

The above object of the present invention is to provide a first trolley 2 mounted on a track on a platform 1 provided on the floor adjacent to a ladle placed in a processing plant, a vertical fixation on the first trolley, The rotating frame 3 is rotatably supported on a shaft, and the part adjacent to one end is a long and thin bar that is rotatably attached to the rotating frame via a horizontal pin, and the opposite end of the bar is connected to the horizontal pin. A rotating arm 4 whose intermediate portion is connected to the operating end of a hydraulic cylinder mounted on the rotating frame, a track arranged parallel to and above the rotating arm and provided on the upper surface of the rotating arm. A charging arm 5 has one end fixed to the mounted second cart 14 and a hook rotatably attached to the opposite end to lock the flux bag, and one end connected to the drive arm of the hook and the opposite end. This is achieved by the flux injection device according to the invention, which is characterized in that it comprises a control rod 6 whose end is connected to the working end of a hydraulic cylinder on the second carriage.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the device of the present invention will be described below with reference to an embodiment shown in the accompanying drawings.

Referring to FIG. 1, a support column 11 is attached to a base member 15 attached to a floor surface 18, and a base plate 1 is rotatably supported at the upper end of the column. Base board 1
In addition to the flux injection device 10 of the present invention, a slag removal device 30 is attached to the device. Device 1 of the present invention
0 is equipped with a first truck 2 equipped with wheels 16 that roll along a track (not shown) on a base plate 1. A rotating frame 3 is rotatably attached to a vertical fixed shaft 12 attached to the upper surface of the first truck 2. The rotating frame 3 has a portion adjacent to the right end of the rotating arm 4 rotatably attached to its upper end via a horizontal pin 13. The rotating arm 4 has an intermediate portion between the left end and the horizontal pin 13 connected to the upper end of the hydraulic cylinder 8 by a pin 19. The lower end of the hydraulic cylinder 8 is attached to the rotating frame 3 by a pin 20. Therefore, the rotating arm 4 not only rotates around the horizontal pin 13 in a vertical plane, but also rotates around the vertical fixed shaft 12 together with the rotating frame 3. The second truck 14 is equipped with wheels 17 that roll along a track (not shown) provided on the upper surface of the rotating arm 4. The right end of the input arm 5 is connected to the second cart 1
4 and its left end extends to the left.

A hook 6 in the form of a bell crank is rotatably attached at its corner to the left end of the throwing arm 5 by a pin 21. The hook 6 is the left arm 6 shown in Figure 1.
Lock the flux bag W on H, and hold the right arm 6.
E is formed as a drive arm and is connected to a control rod 7, which will be described below. A control rod 7 consisting of an elongated steel rod has its right end connected to a hydraulic cylinder 9 on a second truck 14. During operation, the rotating arm 4 is rotated around the vertical fixed shaft 12 by the rotating frame 3 and placed at the position shown by the dotted chain line in FIG.
(only shown). Moreover, the rotating arm 4 can be tilted horizontally as required (FIG. 3). In such a case, the flux bag W can be easily locked onto the hook 6 provided at the tip of the input arm 5 (see FIG. 3). Therefore, when the rotating arm 4 is returned to the solid line position and the second cart 14 is moved to the left, the left end of the throwing arm 5 can be brought to the upper part of the ladle 50. By appropriately selecting the position of the second truck 14 and the rotating position of the rotating frame 3, the flux bag W can be placed at a desired position inside the ladle 51. Thereupon, by actuation of the hydraulic cylinder 9, the hook 6 can be rotated counterclockwise around the pin 21 via the control rod 7, and the flux bag W can be dropped into the ladle 50 (FIG. 1). By repeating this operation as appropriate, a large number of flux bags W can be placed in the ladle 50.

The sludge removing device 30 includes a cart 31 having wheels 36 that roll along a track 37 on the platform 1, and a long and narrow beam-shaped scraper rotatably supported by a pedestal 40 on the cart and with a scraper 33 attached to the left end. It consists of a protruding arm 32. A scraper 3 34 is attached to the right end of the scraping arm 32 and is attached to the left end of the scraping arm 32.
3 shows a hydraulic cylinder that raises and lowers. Also the second
In the figure, 38 indicates an operation room, and 39 indicates a drive unit room.

Effects of the Invention In the present invention, since the slag removal device and the flux input device are mounted on the same platform, flux can be introduced at the same time as the slag removal work is completed. Therefore, time and effort can be significantly saved. Further, the flux placed in the ladle can be evenly distributed using the scraper of the slag removing device. Furthermore, it has the following advantages when compared to the conventional flux injection mechanism.

1 Previously, flux was stored in a storage tank from a flux bag and then poured into a ladle, but when using the device of the present invention, not only is this procedure unnecessary, but also a storage tank and cut-out mechanism are no longer required. It can save time and effort.

2. The equipment cost is much lower than the method of stirring molten steel and simultaneously using a dispenser to inject flux together with carrier gas. Therefore, it is extremely effective for producing high-purity steel of which there are only a few target steel types.

3 In the conventional practice, after sludge removal, during the transportation period to secondary refining, it is in a so-called bare hot water state, and the temperature is 10 to 30℃/
mm was forced to lower the molten steel temperature,
By using the device of the present invention, bare hot water can be avoided by introducing flux immediately after slag removal, and the temperature drop of molten steel can be suppressed to about 0.3°C at most.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing the apparatus of the present invention, FIG. 2 is a plan view of the apparatus shown in FIG. 1, and FIG. 3 is a side view showing the apparatus shown in FIG. 1 in a state in which a flux bag is mounted. 1... Base board, 2... First truck, 3... Rotating frame, 4... Rotating arm, 5... Loading arm, 6... Hook, 6E... Hook splitting arm, 7... Control Rod, 8
... Hydraulic cylinder, 9 ... Hydraulic cylinder, 1
0... Device of the present invention, 11... Support column, 12... Vertical fixed shaft, 13... Horizontal pin, 14... Second truck, 15... Foundation member, 16... Wheel, 17...
Wheel, 18...floor surface, 19...pin, 20...pin, 21...pin, 30...slag removal device, 31...
Trolley, 32... scraping arm, 33... scraper,
34...Hydraulic cylinder, 35...Joint, 36...
...wheels, 37...tracks, 38...operation room, 39...
... Drive unit chamber, 40 ... Frame, 50 ... Ladle, 51 ... Molten steel, 52 ... Molten slag, 53 ... Interface.

Claims (1)

[Scope of claim for utility model registration] (1) A first trolley 2 mounted on a track on a platform 1 provided on the floor adjacent to a ladle placed in a processing plant, and on the first trolley. The rotating frame 3 is rotatably supported on a vertical fixed shaft, and the part adjacent to one end is rotatably attached to the rotating frame via a horizontal pin. A rotating arm 4 whose intermediate portion with the horizontal pin is connected to the operating end of a hydraulic cylinder attached to the rotating frame, arranged parallel to the rotating arm above the rotating arm, and provided on the upper surface of the rotating arm. A charging arm 5 has one end fixed to the second bogie 14 mounted on the track, and a hook rotatably attached to the opposite end for locking the flux bag W, and one end attached to the drive arm of the hook. A flux injection device characterized in that the control rod 6 has a control rod 6 connected to the control rod 6 and the opposite end connected to the operating end of a hydraulic cylinder on a second truck. (2) The flux injection device according to claim (1) of the utility model registration, characterized in that the base plate is rotatably supported via a vertical shaft provided approximately at the center. (3) The flux set forth in claim (2) for utility model registration, wherein the base plate is equipped with a sludge removal mechanism having a scraper that scrapes out molten slag floating on the upper surface of the molten steel in the ladle. Insertion device.