JP2015051860A - Dust collection tripper and iron-making material charging method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To integrate a tripper and dust collection means, and efficiently collect dust generated when an iron-making material is charged in a raw material tank from a belt conveyer.SOLUTION: A belt conveyor 6 is covered with a conveyor hood 6a that can be moved by a travelling truck 10c travelling on a track 11. An iron-making material that falls from the leading end of the belt conveyor 6 is accumulated in a raw material tank from a tripper 1 through a chute 2. A dust collection hood 8a is arranged in the upper part of the tripper 1, and the dust collection hood 8a is connected to a dust collector 9 placed on a travelling truck 10b travelling on the track 11 by a dust collection pipe 8. Namely, in order to efficiently collect dust generated when an iron-making material is charged, the dust collector 9 that travels integrally with the tripper 1 is connected to the tripper 1. Dust is accumulated in a hopper 9a of the dust collector 9. The deposit of the collected dust accumulated in the hopper 9a is discharged from a discharge port 9b to the raw material tank just under it in an appropriate manner.

Description

  The present invention relates to a tripper used when charging iron-making raw materials into a raw material tank from a belt conveyor, and a method of charging iron-making raw materials into the raw material tank using the tripper.

  The steelmaking raw material is conveyed from an outdoor storage place to a raw material storage facility by a belt conveyor as needed, and is charged into a raw material tank via a tripper. Since dust is generated at this time, the iron-making raw material is charged into the raw material tank while collecting the dust with the dust collector disposed in the raw material storage facility. Dust collection must be performed efficiently and continuously, and several dust collection methods or dust collection apparatuses have been proposed so far (see Patent Documents 1 to 4).

  FIG. 1 shows an embodiment of a conventional raw material storage facility. Three rows of traveling tracks (not shown) of the tripper 1 are arranged in parallel on the upper part of the raw material tank 7 arranged in the raw material storage facility 5. The ironmaking raw material conveyed by a belt conveyor (not shown) is charged into the raw material tank 7 from the tripper 1 through the chute 2. The belt conveyor circulates as a belt conveyor 6 after supplying the steelmaking raw material to the tripper 1.

  When the iron-making raw material is charged into the raw material tank 7 from the tripper 1 through the chute 2, dust is generated. In order to collect the generated dust, a dust collection duct 4 a is provided on the top of the tripper 1. The dust collection duct 4 a is connected to the mobile duct connection pipe 3 that travels on the dust collection main pipe 4 disposed along the travel path of the tripper 1 in the upper space of the raw material storage facility 5.

  That is, the dust collected by the dust collection duct 4 a flows into the dust collection main pipe 4 through the movable duct connection pipe 3 that runs on the dust collection main pipe 4 in conjunction with the running of the tripper 1.

JP-A-56-070891 Japanese Patent Application Laid-Open No. 11-334887 JP 2001-002246 A JP 2006-241536 A

  In a conventional raw material storage facility (see FIG. 1), the upper part of the dust collecting main pipe (moving duct connecting pipe running surface) is attached to a sliding rubber sheet moving duct connecting pipe and sealed to collect dust. Airtightness is maintained between the main pipe and the mobile duct connection pipe. Further, the airtightness between the chute for charging the raw material tank into the raw material tank and the raw material tank is maintained by attaching a rubber seal that slides on the upper part of the raw material tank to the chute.

  However, since the rubber sheet and the rubber seal are worn with sliding and lack the sliding stability, it is difficult to always slide the rubber sheet and the rubber seal smoothly. Unstable sliding of the rubber sheet or rubber seal causes a decrease in dust collection efficiency and inability to run the tripper.

  And the instability of rubber sheet and rubber seal sliding becomes more prominent as the tripper travels longer, so when expanding raw material storage facilities, extension of existing dust collection facilities cannot be supported. Is the actual situation.

  Therefore, the present invention provides a novel dust collecting means that does not hinder tripper travel, and also provides a method of efficiently collecting dust using the dust collecting means and charging the iron-making raw material into the raw material tank. Objective.

  The inventors of the present invention have intensively studied dust collection means that do not impede travel of the tripper and can collect dust with high efficiency when charging the raw material tank into the raw material tank. As a result, when the tripper and dust collecting means are integrated, the tripper can be quickly moved to the steelmaking raw material charging position, and the steelmaking raw material can be charged into the raw material tank while collecting dust with high efficiency. I found it.

  This invention was made | formed based on the said knowledge, and the summary is as follows.

  (1) A dust collection tripper characterized in that a dust collector is integrally provided in a tripper used when charging iron-making raw materials from a belt conveyor to a raw material tank.

  (2) The dust collector tripper according to (1), wherein the dust collector is mounted on a cart connected to the tripper.

  (3) The dust collector tripper according to (1) or (2), wherein the dust collector includes a discharge port for discharging the dust collection deposit accumulated by dust collection to the raw material tank.

  (4) In the method of charging the steelmaking raw material into the raw material tank from the belt conveyor, the ironmaking raw material is charged into the raw material tank while collecting the dust using the dust collection tripper according to any one of (1) to (3). A method of charging a steelmaking raw material, characterized by:

  (5) The method for charging an iron-making raw material according to (4), wherein the dust collection deposit deposited by the dust collection is discharged to a raw material tank.

  According to the present invention, since the tripper and the dust collecting means are integrated, it is not necessary to provide a large-scale and large-capacity dust collecting device in the raw material storage facility. Further, according to the present invention, the tripper and the dust collecting means are integrated, move quickly to the charging position of the iron making raw material, and stably collect the iron making raw material in the raw material tank while collecting the dust efficiently. Since it can be charged, work efficiency is greatly improved.

  Furthermore, the dust collection deposit deposited on the dust collector can be directly discharged into the raw material tank and recovered as a steelmaking raw material.

It is a figure which shows the one aspect | mode of the conventional raw material storage equipment. It is a figure which shows the one aspect | mode of the tripper (this invention) which connected the dust collector. (A) shows the side aspect of the tripper which connected the dust collector, (b) shows the front aspect of a dust collector.

  The dust collection tripper of the present invention will be described based on the drawings. In FIG. 2, the aspect of the dust collection tripper which connected the dust collector is shown. FIG. 2A shows a side aspect of a tripper connected with a dust collector, and FIG. 2B shows a front aspect of the dust collector.

  The tripper 1 that is moved by the traveling carriage 10 a is stationary at the iron making raw material charging position, and the tip of the belt conveyor 6 is located above the tripper 1. The belt conveyor 6 is covered with a conveyor hood 6a that can be moved by a traveling carriage 10c traveling on the track 11.

  The iron-making raw material (not shown) falling from the tip of the belt conveyor 6 is deposited from the tripper 1 through the chute 2 into the raw material tank (not shown). A dust collection hood 1 a is disposed on the upper part of the tripper 1, and the dust collection hood 1 a is connected to a dust collector 9 mounted on a traveling carriage 10 b traveling on a track 11 by a dust collection pipe 8. Yes.

  In other words, a dust collector 9 that travels integrally with the tripper 1 is connected to the tripper 1 in order to efficiently collect dust generated when the iron-making material is charged. This is a feature of the present invention.

  The dust accumulates in the hopper 9a of the dust collector 9. The dust collection deposit deposited in the hopper 9a is appropriately discharged from the discharge port 9b to the raw material tank immediately below. That is, the dust collection deposit is collected as a steelmaking raw material.

  The connection mode between the tripper and the dust collector is not limited to the connection mode shown in FIG. If a metal dust collecting pipe is used, the tripper and the dust collector can be integrated by the dust collecting pipe 8 alone, but the traveling carts may be connected by a coupler.

  In the present invention, since the tripper and the dust collector are integrated, it is not necessary to provide a large-scale, large-capacity and inefficient dust collector in the raw material storage facility. In the present invention, since the tripper and the dust collector are integrated, the tripper and the dust collector are quickly moved to the charging position of the ironmaking raw material, and the ironmaking raw material is put into the raw material tank while collecting the dust efficiently. It can be charged stably. As a result, work efficiency in raw material storage is significantly improved.

  Next, examples of the present invention will be described. The conditions in the examples are one example of conditions used for confirming the feasibility and effects of the present invention, and the present invention is based on this one example of conditions. It is not limited. The present invention can adopt various conditions as long as the object of the present invention is achieved without departing from the gist of the present invention.

(Example)
Three trippers shown in Table 1 (in the table, A-Tr, B-Tr, C-Tr) were placed in the raw material storage facility, and iron-making raw materials (sintered powder and ore powder) were charged into the raw material tank. . The charging was performed by the dust collection method of the present invention and the conventional dust collection method. The results are shown in Table 2. From Table 2, it can be seen that the dust collection method of the present invention is excellent.

  As described above, according to the present invention, since the tripper and the dust collecting means are integrated, it is not necessary to provide a large-scale and large-capacity dust collecting device in the raw material storage facility. Further, according to the present invention, the tripper and the dust collecting means are integrated, move quickly to the charging position of the iron making raw material, and stably collect the iron making raw material in the raw material tank while collecting the dust efficiently. Since it can be charged, work efficiency is greatly improved.

  Furthermore, the dust collection deposit deposited on the dust collector can be directly discharged into the raw material tank and recovered as a steelmaking raw material. Therefore, the present invention has high applicability in the steel industry.

DESCRIPTION OF SYMBOLS 1 Tripper 2 Chute 3 Mobile duct connection pipe 4 Dust collection main pipe 4a Dust collection duct 5 Raw material storage equipment 6 Belt conveyor 6a Conveyor hood 7 Raw material tank 8 Dust collection piping 8a Dust collection hood 9 Dust collector 9a Hopper 9b Discharge port 10a, 10b 10c traveling vehicle 11 track

Claims (5)

  A dust collection tripper characterized in that a dust collector is integrally provided in a tripper used when charging iron-making materials from a belt conveyor to a material tank.   The dust collector tripper according to claim 1, wherein the dust collector is mounted on a cart connected to the tripper.   The dust collection tripper according to claim 1 or 2, wherein the dust collector includes a discharge port for discharging the collected dust accumulated by the dust collection to the raw material tank.   In the method of charging an iron-making raw material into a raw material tank from a belt conveyor, the iron-making raw material is charged into the raw material tank while collecting dust using the dust collection tripper according to any one of claims 1 to 3. The method of charging steelmaking raw materials.   The method for charging a steelmaking raw material according to claim 4, wherein the dust collection deposit deposited by the dust collection is discharged to a raw material tank.

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