JPH10183226A - Device for charging powdery and granular material-packed body into molten metal or molten slag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To charge a powdery and granular material into molten metal or molten slag in good yield without scattering. SOLUTION: The powdery and granular materials are discharged on a packing sheet 11 laid on a table 5 for laying the packing sheet from a powdery and granular hopper 1, and after receiving the powdery and granular materials into a cylindrical vessel 13 from an opening hole part 6 under condition of packing with the packing sheet 11, claws 9 for twisting are shifted inward while rotating a rotary ring 7 with a rotary driving device 16, and the peripheral room part of the packing sheet 11 is fastened by twisting to form the powdery and granular material-packed body 19. A charging gate plate 1'0 is horizontally drawn out by driving a link-chain type driving device 18, and the lower end of the cylindrical vessel 13 is opened to drop the powdery and granular material- packed body 19 into a charging chute 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for charging a powdery or granular package into molten metal or molten slag in a molten metal container.

[0002]

2. Description of the Related Art Granules are put into molten metal or molten slag for treatment. For example, hot metal discharged from a blast furnace is added with a hot metal pretreatment material to adjust impurity components outside the furnace. It is widely known that a hot metal pretreatment material composed of a granular material is charged into hot metal in a container such as a topped car. In order to introduce the granular material into the molten metal, the granular material is blown together with the carrier gas using a blowing lance, or the granular material is accelerated by using an accelerated injection device as disclosed in JP-A-61-159508. In addition to the means for processing, means for preliminarily processing and charging the granular material into briquettes, means for filling the granular material into a container such as an iron capsule as described in JP-A-4-99113, and further, 3-19
As disclosed in Japanese Patent No. 9338, there is known a means for feeding a package in which a granular material is wrapped in paper.

In the means for blowing a granular material into a molten metal or a molten slag by using a blowing lance, the lance for blowing the granular material into the molten metal container directly touches the molten metal or the molten slag, or a hot scattered material. Damaged by For this reason, it is necessary to frequently replace the granular material charging section such as the blowing lance, and the running cost required for the incidental work accompanying the replacement is increased and uneconomical.

[0004] Among the means for accelerated injection of a granular material using an acceleration injection device, when the granular material is accelerated by air, the path of the air current is directed from the direction toward the molten metal when the molten metal surface is reached. It bends in the direction along the bath surface, and powder and granules accompany it, so that the expected charging efficiency cannot be obtained.
In addition, in the case of an accelerated injection device of the type in which centrifugal force is applied to the granules by the rotation of the injection machine, it is necessary to keep the device away from the high-temperature molten metal surface. Slow down immediately due to resistance, and the injection efficiency does not increase. In addition, the means for briquetting and adding the granular material has a drawback that the equipment cost for briquetting the granular material and the operation cost thereof are increased.

[0005]

When receiving the granular material, the container is filled with the granular material as shown in FIG.
When charging the granules as a package wrapped in paper, place a predetermined number of containers that are pre-filled with the granules in other places or wrap the granules strictly in paper so that they can be held sideways. They are handled on pallets. If the device for cutting out containers and packages from this pallet tends to be large, not only does the equipment cost increase, but also because the handling is a pallet unit batch type, if the remaining amount in the pallet currently in use decreases, In spite of the remaining amount, it is necessary to replace the next pallet and prepare for loading, and there is a disadvantage that the work of loading on the pallet increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art. In particular, the present invention has an improved melting means for improving the means for feeding a granular material as a granular material package wrapped in a wrapping sheet such as paper. It is an object of the present invention to provide an apparatus for charging a granular or granular package to metal or molten slag.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a melting and disposing device which is arranged between a powder hopper for receiving and storing powder to be charged and a charging chute located below the hopper. An apparatus for charging a granular material package to metal or slag, wherein an opening is provided at a position directly below a cutout gate below the granular material hopper, and a packaging sheet for packaging the granular material straddles the opening. A packaging sheet placing table to be placed by the above, a rotating ring disposed below the packaging sheet placing table and driven to rotate in the horizontal direction, and a powdery and granular material disposed below the rotating ring and placed on the packaging sheet. A cylindrical container having upper and lower ends opened for receiving the container in a wrapped state, and a charging gate plate disposed at the lower end of the cylindrical container and slidably opened and closed in a horizontal direction. With things wrapped A plurality of claws for twisting the packing sheet margin portion which are arranged so as to surround the margin portion of the packaging sheet which is received by the cylindrical container and protrudes upward from the inner opening and which is driven inward and synchronously inward and backward. It is an apparatus for charging a granular material package to molten metal or molten slag, characterized by having:

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, in order to increase the efficiency of charging of granular material into molten metal or molten slag, the granular material is not It is based on the finding that forming a shape is sufficient. That is, in order to maintain the shape of the package in which the granular material is wrapped with a packaging sheet such as paper until the molten metal or molten slag in the molten metal container from the charging device is reached, the shape of the package is maintained. As shown in the work flow up to the loading of the powder and granules, the present invention has been achieved by focusing on packing with a packaging sheet at the place where the powder and granules are charged, and conducting various studies.

An embodiment of the present invention will be described below with reference to the drawings. For example, as shown in FIG. 1 to FIG. 3, a powder hopper 1 for receiving and storing powder to be charged is placed in a hot metal pre-treatment plant for charging powder and granules such as a pre-treatment material to hot metal in a torpedo car. The granular material packaging body charging device 3 is installed between the charging chute 2 and the height direction.

The powder-particle package input device 3 has an opening 6 at a position just below the cutout gate 4 provided below the powder hopper 1 and places a packaging sheet 11 across the opening 6. A packaging sheet mounting table 5 to be mounted, a rotating ring 7 disposed below the packaging sheet mounting table 5 and driven to rotate in the horizontal direction, and a horizontal slide below the rotating ring 7 at the lower end. Possible input gate plate 10
And a cylindrical container 13 having upper and lower ends open for receiving the granular material 12 wrapped on the packaging sheet 11.
Further, a plurality of rotating rings 7 are arranged so as to surround a marginal portion of a packaging sheet which is received in the cylindrical container 13 in a state of wrapping the granular material 12 and protrudes upward from the inner opening 8 of the rotating ring 7. It has a torsion claw 9 at the margin of the packaging sheet, which is driven forward and backward in synchronization inward.

A plurality of torsion claws 9 (four in the drawing are shown) are respectively connected to the rotating ring 7 by pinning one end thereof.
An inward drive cylinder that is rotatably supported via 14 and has the other end side attached to the rotating ring 7.
The torsion claw 9 is connected to the drive cylinder 15 so as to be able to advance and retreat by rotating the torsion claw 9 inward by expanding and contracting the drive cylinder 15. The means for moving the torsion claw 9 inward and backward is not limited to this, but the torsion claw 9 is shortened and arranged toward the center of the rotating ring, and a drive cylinder is connected to the rear thereof. You may be made to advance and retreat toward the center. It is also possible to use a motor-driven forward / backward device instead of the drive cylinder. Further, a spring structure may be used.

A rubber roller 17 provided in a rotary drive device 16 is in contact with the outer peripheral side surface of the rotary ring 7. When the rubber roller 17 is rotated in the horizontal direction by the rotary drive device 16, the rotary ring 7 in contact with the rubber roller 17 is rotated in the horizontal direction. To rotate.
The input gate plate 10 capable of sliding the lower end of the cylindrical container 13 in the horizontal direction is moved by the link chain type driving device 18 to the cylindrical container 13.
Is reciprocated between a position at which the lower end of the is closed and a position at which the lower end is opened.

Next, a description will be given of a mode of use of the powder and granular material package input device 3 of the present invention. When the granules 12 such as pretreatment materials stored in advance in the granule hopper 1 are put into the hot metal in the torpedo car, first, the wrapping sheet 11 (the wrapping sheet is made of paper sheet, resin film, or the like). Select and use a flexible sheet that does not adversely affect the components of the hot metal or molten slag.As the paper, any paper such as kraft paper or high-quality paper can be used, but thick paper, especially Kent paper, can be used. (Preferably) is fed onto the packaging sheet placing table 5.
Subsequently, a cutout gate 4 provided below the granular material hopper 1
Is opened to cut out a predetermined amount of the granular material 12 from the granular material hopper 1, the granular material 12 is placed on the packaging sheet 11 placed on the packaging sheet placing table 5.
11 moves downward through the opening 6 and is dropped into the cylindrical container 13 whose lower end is closed by the input gate plate 10 in a state where the granular material 12 is wrapped on the packaging sheet 11.

At this time, the marginal portion of the packaging sheet 11 dropped into the cylindrical container 13 together with the granular material 12 is open so as to protrude upward from the inner opening 8 of the rotating ring 7. In this state, the rotation driving device 16 is driven to drive the rubber roller 17.
The rotation ring 7 is rotated through the rotation of the rotation of the tongue, and the four drive cylinders 15 are synchronously driven to the extension side, and the tips of the torsion claws 9 are turned inward with the pins 14 as fulcrums. The packaging sheet 11 is moved and twisted to tighten the peripheral margin of the packaging sheet 11 with the tip end of the torsion claw 9, thereby forming a powder and granular material package 19. After forming the granular material package 19 in this manner, the rotating ring 7 is stopped, and each drive cylinder 15 is driven to the contraction side to loosen the torsion claw 9 and return to the original standby position.

Subsequently, by driving the link chain type driving device 18, the input gate plate 10 is pulled out from the lower end of the cylindrical container 13 in the horizontal direction, and the lower end of the cylindrical container 13 is opened.
The granular material package 19 inside falls down by gravity, and after passing through the charging chute 2 while maintaining the nodular form, the granular material
It is thrown onto the hot metal in the torpedo car without scattering 12. Since the granular material package 19 put on the hot metal is exposed to a high temperature, the packaging sheet 11 on the surface is burned off, and the granular material 12 is added to the molten metal with a high yield. When the charging of the granular material package 19 is completed, the link chain driving device 18 is driven to return the charging gate plate 10 to the lower end of the cylindrical container 13 to prepare for the next operation.

According to the present invention, upon receiving a granular material,
It can be easily replenished at any time simply by transporting a flexible container bag or the like containing the granules to the granule hopper installed at the loading position using a building crane. In addition, to use the granular material package input device provided below the granular material hopper,
By the minimum necessary packaging work of twisting the marginal part of the packaging sheet, it is possible to maintain a shape large enough for the granular material package to slide down in the charging chute, and from the charging chute 2 It is possible to prevent the generation of dust in the process of falling to the hot metal. Furthermore, it is easy to automate.

[0017]

According to the present invention, at the place where the granular material is introduced into the molten metal or the molten slag, the granular material packaging device is installed between the granular material hopper and the introduction chute and introduced. Occasionally, the packaging of the granular material with a wrapping sheet greatly simplifies handling up to the packaging of the granular material. Alternatively, it can be put into molten slag. Further, since the packaging is performed by a twisting operation, any granular material that can be dispensed from the hopper can be implemented regardless of the properties of the granular material.

[Brief description of the drawings]

FIG. 1 is a side view showing an apparatus for charging a granular material package according to the present invention.

FIG. 2 is a partially enlarged sectional view showing a portion A in FIG. 1;

FIG. 3 is a plan view showing the direction of arrow AA in FIG. 2;

FIG. 4 is a flowchart showing an operation procedure up to the input of a granular material according to the present invention.

FIG. 5 is a flowchart showing a conventional operation procedure up to the introduction of a granular material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Granule hopper 2 Feed chute 3 Powder / granule package feeding device 4 Cut-out gate 5 Packaging sheet placing table 6 Opening 7 Rotating ring 8 Inner opening 9 Torsion claw 10 Feeding gate plate 11 Packaging sheet 12 Granular material 13 Cylindrical container 14 Pin 15 Drive cylinder 16 Rotary drive 17 Rubber roller 18 Link chain drive 19 Powder and granular material package

Claims (1)

[Claims] 1. An apparatus for feeding a granular material package to a molten metal or slag disposed between a granular material hopper for receiving and storing a granular material to be charged and a charging chute located below the hopper. A packaging sheet placement table having an opening at a position directly below a cut-out gate below the powder and grain hopper and for placing a packaging sheet for packaging the powder and granules across the opening; and A rotary ring disposed below the mounting table and driven to rotate in the horizontal direction; and a cylindrical container disposed below the rotary ring and having upper and lower ends open for receiving the granular material wrapped in the packaging sheet. And a charging gate plate disposed at the lower end of the cylindrical container and slidably opened and closed in a horizontal direction. Projecting upward from opening A molten metal or a molten slag, which is provided with a plurality of packaging sheet surplus portions to be twisted inwardly and synchronously driven inward and backward to surround a surplus portion of the packaging sheet to be twisted. Device for feeding powder and granular materials into the machine.