WO2011111735A1 - Apparatus for charging raw material in sintering machine - Google Patents

Apparatus for charging raw material in sintering machine Download PDF

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Publication number
WO2011111735A1
WO2011111735A1 PCT/JP2011/055494 JP2011055494W WO2011111735A1 WO 2011111735 A1 WO2011111735 A1 WO 2011111735A1 JP 2011055494 W JP2011055494 W JP 2011055494W WO 2011111735 A1 WO2011111735 A1 WO 2011111735A1
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WO
WIPO (PCT)
Prior art keywords
chute
scraper
raw material
charging
ceramic tile
Prior art date
Application number
PCT/JP2011/055494
Other languages
French (fr)
Japanese (ja)
Inventor
祐二 深倉
洋平 坪根
貴司 篠原
導宣 齋藤
Original Assignee
新日本製鐵株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 新日本製鐵株式会社 filed Critical 新日本製鐵株式会社
Priority to CN201180012969.5A priority Critical patent/CN102792113B/en
Priority to BR112012022663-0A priority patent/BR112012022663B1/en
Priority to KR1020127023446A priority patent/KR101460870B1/en
Priority to JP2011536666A priority patent/JP4943562B2/en
Publication of WO2011111735A1 publication Critical patent/WO2011111735A1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B21/00Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00Preliminary treatment of ores or scrap
    • C22B1/14Agglomerating; Briquetting; Binding; Granulating
    • C22B1/16Sintering; Agglomerating
    • C22B1/20Sintering; Agglomerating in sintering machines with movable grates
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B19/00Combinations of furnaces of kinds not covered by a single preceding main group
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00Charging; Discharging; Manipulation of charge
    • F27D3/0033Charging; Discharging; Manipulation of charge charging of particulate material

Definitions

  • the present invention relates to an apparatus for charging a sintered material used when a sintered material is charged onto a pallet in a Dwightroid-type sintering machine, and more particularly to remove the sintered material adhering to the material charging chute.
  • the present invention relates to a charging device having a scraper.
  • a sintered raw material is cut out from a raw material hopper by a drum feeder, and the sintered raw material is charged onto a pallet through a chute (also called a sloping chute).
  • a chute also called a sloping chute.
  • the upper layer part of the raw material layer is charged with a larger amount of fuel (carbon source) than the lower layer part, and the lower layer part is charged so that the raw material particle size is coarser than that of the upper layer part.
  • a classification device is used in which a sieve bar is provided in a stepped manner toward the pallet direction at the tip of the chute (see Patent Document 1).
  • the sintered raw material contains moisture added during granulation and has a property of being easily adhered. Therefore, with the operation of the sintering machine, the raw material gradually adheres and accumulates on the sliding surface (upper surface) of the chute, and the smooth flow of the sintered raw material is hindered. In particular, at the raw material falling point above the chute, the raw material falling position is constantly changing, and the attached raw material is less likely to be washed away by the next raw material falling from above, and it is particularly easy to deposit. ing. Thereby, it is necessary to periodically remove the attached raw material.
  • each grain of the sintering raw material slides down so as to flow on the chute, It is necessary to pour onto the top.
  • the flow of the sintering raw material becomes irregular, the charging state of the raw material under the adhered portion may change.
  • Patent Documents 2 and 3 a scraper that slides on the sliding surface of the chute is provided, and it is periodically operated to scrape off the material adhering and depositing on the sliding surface. To be removed.
  • Ceramic tiles have distortions due to firing, and a deviation of about 0.2 mm is allowed as a dimensional tolerance, and the shape of each tile is often slightly different. Therefore, in a chute where the sliding surface is lined with ceramic tiles, a step is easily formed at the joint between the tiles.
  • the scraper cannot be slid directly on the sliding surface like a chute using a wear-resistant steel plate. Therefore, a roller is attached to the bottom surface of the scraper so that the scraper can smoothly get over the step portion of the tile joint, and the lower surface of the scraper is supported by being floated from the tile surface. With this configuration, the lower surface of the scraper is prevented from contacting the step portion of the tile joint.
  • Patent Document 1 a groove is provided on the bottom surface of the scraper to solve the problem of the scraper floating due to the raw material left behind.
  • the sintered raw material is scraped off by the corners of the groove, and the scraped raw material is discharged out of the machine through the groove.
  • this apparatus has a configuration in which the scraper with the bottom face closed slides directly on the chute surface. As described above, this technique cannot be applied to a scraper configured to slide in a state where the bottom portion is floated from the chute surface.
  • the object of the present invention is to provide a charging apparatus for a sintered raw material that ensures the strength of the scraper, prevents the lower surface of the scraper from floating from the chute surface, and can be operated in a stable state.
  • a charging apparatus for a sintering raw material includes a chute for charging a sintering raw material onto a pallet; the reciprocating movement on the chute, and the deposit on the chute A scraper that removes the sintering raw material from the chute, the scraper being inclined with respect to the upper surface of the chute, and a scraper tool attached to the front end of the lower surface side of the inclined plate And a support frame that supports the inclined plate, and a roller device that is attached to the support frame and causes the inclined plate and the support frame to travel on the upper surface of the chute;
  • the width dimension of the chute is at least substantially the same as the width dimension of the inclined plate.
  • the sintering raw material charging device described in (1) above has a space that is continuous in the width direction of the chute and communicates with the outside of the scraper behind the scraper tool. It is preferable.
  • the support frame has a vertical reinforcing plate that extends to the front side of the inclined plate, and a horizontal reinforcing plate that extends in the width direction of the inclined plate. It is preferable that the space is formed by forming a diagonal notch at the tip of the longitudinal reinforcing plate.
  • the parallel reinforcing plate extends in a direction parallel to the chute.
  • the scraper tool and the support frame are supported by the roller device at a distance from the upper surface of the chute; It is preferable that the space
  • the sintered raw material charging apparatus according to (1) is configured such that when the scraper tool reaches the front end of the chute, the inclined plate covers a position where the sintered raw material falls. Preferably there is.
  • the chute preferably includes a substrate and a plurality of ceramic tiles arranged on the surface of the substrate.
  • the support frame for supporting the inclined plate since the support frame for supporting the inclined plate is provided, the strength of the scraper is reduced when removing the raw material of sintering attached to the chute. It can be improved sufficiently. As a result, it is possible to prevent the lower surface of the scraper from floating from the surface of the chute and to operate in a stable state.
  • the charging apparatus for the sintering raw material described in (2) above since the space connected to the outside of the scraper is formed behind the scraper tool, the burning accumulated in the rear of the scraper tool through this space.
  • the raw material can be discharged outside the scraper. Therefore, the sintering raw material is accumulated behind the scraper tool, and the scraper can be prevented from floating. As a result, the charging of the sintered raw material can be carried out stably.
  • the support frame since the support frame has the vertical reinforcing plate, the horizontal reinforcing plate, and the parallel reinforcing plate, the strength of the scraper can be further improved. it can.
  • the apparatus for charging a sintered raw material described in (4) above even when the scraper is operated with the lower surface of the scraper floating above the upper surface of the chute, the sintering material accumulated inside the scraper tool as the scraper operates.
  • the binding material can be discharged out of the machine through the space between the upper surface of the chute and the lower end of the support frame. Thereby, it is possible to stably carry in the charging of the sintered raw material without causing the problem of the scraper floating.
  • the scraper can be operated even during operation of the charging apparatus. It becomes possible to remove the sintering raw material adhering to the chute.
  • the raw material particles do not jump up and the sintered raw material can be efficiently supplied to the chute.
  • FIG. 3 is a detailed view of the scraper of FIG. 2. It is detail drawing of the front part of the scraper. It is a front view of the chute lined with ceramic tiles. It is a figure explaining the detail of the tile joint part of the chute lined with the ceramic tile. It is a top view which shows the whole scraper.
  • FIG. 8 is a view taken along the line AA in FIG. 7 and shows an example of the structure of the support frame of the scraper.
  • FIG. 8 is a view taken along line BB in FIG. 7. It is a figure which shows the side guide apparatus provided in the scraper.
  • the sintered raw material charging device A includes a chute 4 and a scraper 15.
  • the chute 4 is provided between the drum feeder 3 and the pallet 7 of the sintering machine, and supplies (charges) the sintered raw material cut out by the drum feeder 3 onto the pallet 7.
  • the chute 4 is attached on a support carriage 11 that travels on a pair of rails 10 laid along the conveying direction of the pallet 7.
  • a tilting base 12 for supporting the chute 4 so as to be tiltable is attached to the support carriage 11.
  • One end side of the tilting gantry 12 is supported so as to be rotatable by a shaft body 13 attached to the frame body of the support carriage 11.
  • the other end of the tilting frame 12 is connected to a rod of a drive cylinder device 14 that is attached to the frame of the support carriage 11 so as to be rotatable.
  • the chute 4 and the scraper 15 can be adjusted to a desired inclination angle.
  • FIG. 2 shows an example in which a classifier 5 having a sieve bar 6 as shown in Patent Document 1 is attached to the tip of the chute 4.
  • the distance between the chute 4 and the drum feeder 3 and the inclination angle of the chute 4 can be adjusted by the inclination angle of the tilting gantry 12 with respect to the position of the support carriage 11.
  • FIG. 2 shows an example in which a drive device 32 for rotationally driving the sieve rod 6 is provided between the tilting frame 12 and the chute 4.
  • the chute 4 is tilted. It can also be installed directly on.
  • a scraper 15 is disposed on the chute 4. As shown in FIGS. 2 and 3, the scraper 15 includes an inclined plate 18, a scraper tool 16, a support frame 17, and a roller device 19.
  • the inclined plate 18 is provided to be inclined with respect to the upper surface of the chute 4 and is attached via a support frame body 17.
  • the scraper tool 16 is attached to the front end of the inclined plate 18 on the lower surface 18a side.
  • the support frame 17 supports the inclined plate 18.
  • the roller device 19 is attached to the support frame body 17 and causes the inclined plate 18 and the support frame body 17 to travel on the upper surface 4 a of the chute 4.
  • the scraper 15 reciprocates on the chute 4 and removes the sintered raw material deposited on the chute 4 from the chute 4. Specifically, the scraper 4 moves on the chute 4, and the scraping material attached to the sliding surface (upper surface) of the chute 4 is scraped off and removed from the chute 4 by the scraper tool 16.
  • the roller device 19 supports the lower end 17 a of the support frame 17 and the lower end 16 a of the scraper tool 16 with a space from the upper surface 4 a of the chute 4. Accordingly, even when the chute 4 with the ceramic tile 9 attached is used, the support frame 17 and the scraper tool 16 do not collide with the corners of the ceramic tile 9 as shown in FIG. The scraper 15 can smoothly get over the step portion d2 formed at the joint of the tile 9.
  • the scraper 15 is connected to a drive mechanism so that the scraper tool 16 attached to the inclined plate 18 can be moved from the rear end portion to the front end portion of the chute 4.
  • a cylinder device 20 is used as a drive device and is connected to a support frame body 17 via a flexible joint which is a rod of the cylinder device 20.
  • the scraper 15 reaches the fall range L of the sintered raw material during the operation of removing the attached raw material. Thereafter, the sintering raw material slides down on the inclined plate 18 of the scraper 15 and is supplied to the pallet 7.
  • the inclined plate 18 needs to have the function of the chute 4. For this reason, the inclined plate 18 is disposed so as to be inclined with respect to the chute 4, and the surface thereof is lined with a wear-resistant steel plate or ceramic tile.
  • the chute 4 includes a chute body 114 and a plurality of ceramic tiles 9 arranged on the surface of the chute body 114.
  • the sliding surface of the chute 4 is also provided in the charging apparatus for the sintered raw material 1 in which the sieve rod 6 is provided in a stepped manner toward the pallet at the tip of the chute 4 as shown in FIG. Lining with the ceramic tile 9 can prevent the chute 4 from being worn.
  • the chute 4 whose slip surface is lined with the ceramic tile 9 has a non-uniform surface compared to a chute having a steel plate as a slip surface.
  • a step is easily formed at the joint of the tile, and it is very difficult to eliminate the step and smooth the whole like a steel plate. If the corner of the downstream tile is higher than the corner of the upstream tile when viewed from the flow direction of the sintering raw material, the step d1 is formed there. It is considered that the raw material particles that collided with the step jump up there, and the flow of the raw material particles becomes irregular.
  • the first ceramic tile 9a which is one of the plurality of ceramic tiles 9, and the downstream of the first ceramic tile 9a.
  • the positional relationship with the second ceramic tile 9b adjacent to the side is desirably flush.
  • step difference d2 is formed so that the 1st ceramic tile 9a may protrude with respect to the 2nd ceramic tile 9b.
  • there is no step between the adjacent ceramic tiles 9 from upstream to downstream, or the downstream side is necessarily lowered even if a step is formed. That is, when the downward step d2 (see FIG. 6) is formed and the upward step d1 is not formed, the raw material particles are prevented from jumping up, and the raw material for sintering to the sieve rod 6 is prevented. Was reduced to the same level as when steel plates were used.
  • the ceramic tile 9 has a distortion caused by firing, and the shape of each tile is often slightly different. Further, a deviation of about 0.2 mm is allowed as a dimensional tolerance. For this reason, if the tiles are simply arranged, a step is easily formed at the joint between the tiles. Therefore, before the ceramic tile 9 is bonded to the tile substrate 112 with the adhesive 113, it is necessary to check the degree of occurrence of the step by arranging the tiles in advance.
  • an upward step d1 protruding downstream is formed, it is replaced with another tile so that the step is eliminated, or a downward step d2 protruding upstream is always formed even if a step is formed. To do.
  • the protruding portion is removed by polishing so that the step is eliminated. In that case, if the surface roughness of the surface of the ceramic tile 9 increases with polishing, the sintered raw material 1 tends to adhere to the ceramic tile 9, so it is necessary to finish it to the same smoothness as the surface of the original ceramic tile 9. There is.
  • the ceramic tiles have a shape in which a corner is dropped and an R is formed at a corner portion 9c on one surface.
  • the surface on which R is formed is arranged as the sliding surface side of the raw material, a recess is formed in the joint portion. Even if the portion is filled with an adhesive, the adhesive will soon wear and a depression will be formed. Such a depression becomes a factor that hinders the uniform flow of the raw material because the raw material easily flows along the depression. Therefore, as shown in FIG. 6, it is preferable that the surface of the ceramic tile 9 on which R is formed be bonded to the tile substrate (substrate) 112 with the bonding surface as the bonding surface.
  • the joints become continuous, and the raw material particles easily flow along the joints.
  • the particle size distribution of the raw material at the pallet position corresponding to the joint portion is disturbed, and the quality of the sintered ore is not constant. Therefore, it is preferable to arrange the tiles in a staggered pattern so that the joints (joints) of the tiles do not continue as shown in FIG.
  • the chute 4 does not have to be lined with ceramic tiles 9 on the entire sliding surface. That is, it is preferable that the ceramic tile 9 is partially provided around the dropping point of the sintered raw material 1 on the tile substrate 112. Specifically, only the region where the sintered raw material 1 dropped from the drum feeder 3 collides with the chute 4 and its vicinity may be lined. Even in this case, the effect of using the ceramic tile 9 can be sufficiently obtained.
  • FIG. 5 shows such an example.
  • a bolt 115 is inserted from the front side (see FIG. 5) to chute the tile substrate 112. It can be fixed to the main body 114.
  • the lower end side of the ceramic tile 9 is fixed from the back side of the chute body 114 with a bolt 115 or the like.
  • the raw material falling part of the chute having a width of 3.5 m was lined with ceramic tile over a width of 60 cm in the raw material flow direction.
  • a 100 ⁇ 100 ⁇ 10 t (mm) alumina ceramic tile was used. Tiles were arranged in a staggered pattern without gaps as shown in FIG.
  • the chute 4 is used in which the ceramic tiles 9 are rearranged in various ways so that the upward step d1 is not formed.
  • a chute was used in which tiles were simply arranged without considering the direction of the step and 12 upward steps d1 were formed.
  • the sintering raw material was charged into the pallet of the Dwytroid-type sintering machine by the charging device having the classification device shown in FIG.
  • the chute of the comparative example when used, the raw material adhered to the sieve rod of the chute after 14 days, and the 3 mm diameter sieve rod became 10 mm in diameter. Therefore, it was necessary to drop the raw material.
  • the chute of this embodiment it was 70 days after the work of dropping the attached raw material was required.
  • the inclined plate 18 As shown in FIG. 2, the inclined plate 18 is arranged to be inclined with respect to the chute 4 so that the distance from the chute 4 increases as it goes upstream.
  • the inclined plate 18 preferably has a length that covers the falling range (falling position) of the sintered raw material 1 when the scraper tool 16 of the scraper 15 reaches the front end position of the chute 4.
  • the vertical width along the traveling direction of the inclined plate 18 (the direction in which the sintering raw material flows) is formed to a width that satisfies the condition.
  • FIG. 7 shows a plan view of the entire scraper 15.
  • the width L1 of the chute 4 is preferably at least substantially the same as the 18 width L2 of the inclined plate.
  • the width L1 of the chute 4 and the 18 width L2 of the inclined plate are equal.
  • the scraper 15 has a shape extending in the lateral direction, and the lateral width of the inclined plate 18 is a width that can cover the width of the chute 4.
  • the cylinder devices 20 are disposed at two locations on both sides, and guide rods 21 are disposed at two locations on the inside of the cylinder devices 20, and the respective tips are connected to the support frame body 17. Further, two sets of roller devices 19 are attached to the support frame 17 at five locations. With this configuration, the scraper 15 can smoothly reciprocate on the chute 4. As shown in FIG. 9, a guide roller 34 is attached to the side of the support frame 17 of the scraper 15 downward and laterally via a bracket 33. The guide rail 35 fixed on the side of the chute 4 on the tilting pedestal 12 is brought into contact with each other to guide the left and right guides of the scraper 15 and prevent the lift.
  • a scraper tool 16 for scraping off the adhering sintered material is fixed to the tip of the inclined plate 18.
  • the scraper tool 16 is formed of a wear-resistant steel material, has a rectangular cross-sectional shape, and can be replaced with a base member 22 fixed to the lower surface of the inclined plate 18 using bolts or the like. It is attached. Further, it is desirable that the inclination angle of the inclined plate 18 with respect to the surface of the chute 4 is formed as small as possible. However, since the scraper 15 has a shape extending laterally, if the inclination angle is too small, the width of the reinforcing plate cannot be sufficiently obtained.
  • the inclination angle of the inclined plate 18 and the configuration of the reinforcing plate is preferably about 5 ° to 35 °.
  • FIG. 8A and 8B show an example of the structure of the support frame 17.
  • FIG. 8A is a view taken along the line AA in FIG. 7 and shows the structure of the both ends of the support frame 17 and the four internal parts.
  • the support frame body 17 has a plurality of reinforcing plates arranged vertically and horizontally and horizontally.
  • the plurality of reinforcing plates include a front vertical plate (vertical reinforcing plate) 23, a central horizontal plate (lateral reinforcing plate) 25, and a horizontal plate (parallel reinforcing plate) 26.
  • the front vertical plate 23 extends to the front side of the inclined plate 18 along the flow direction of the sintering raw material 1.
  • the central horizontal plate 25 extends in the width direction of the chute 4 and the inclined plate 18.
  • the horizontal plate 26 extends in a direction parallel to the chute 4.
  • a rear vertical plate 24 is disposed on the rear side of the central horizontal plate 25 with the central horizontal plate 25 interposed therebetween.
  • the inclined plate 18 is appropriately configured to be supported by such a plurality of reinforcing plates, and the lower surfaces of the plurality of reinforcing plates are open.
  • the front vertical plate 23, the rear vertical plate 24, and the central horizontal plate 25 may be arranged perpendicular to the chute 4.
  • a rod of the cylinder device 20 and a tip end portion of the guide rod 21 are attached to the central horizontal plate 25.
  • FIG. 8B is a view taken along the line BB in FIG. 7 and shows the structure of the position where the roller device 19 is attached.
  • the roller device 19 is attached to a horizontal plate 26 fixed between the front vertical plates 23.
  • a space 28 is formed on the inner side (rear side) of the scraper tool 16 with the upper side defined by the inclined plate 18 and the lateral direction defined by the front vertical plate 26.
  • an oblique cutout 27 is formed at the front end of the front vertical plate 23 in order to secure a horizontal connection between the spaces 28.
  • the notch 27 forms a gap 29 between both ends and the front end of the front vertical plate 23 disposed inside and the back surface of the scraper tool 16. By this gap 29, a space is formed behind the scraper tool 16 in the width direction of the chute 4 and communicated with the outside of the scraper 15.
  • the front vertical plate 23 of the support frame 17 is supported by the roller device 19 so that a gap 31 having a height b is formed between the sliding surface of the chute 4 and the lower end of the support frame 17.
  • the height b is set to be larger than the height a of the interval 30 formed between the lower end of the scraper tool 16 and the sliding surface of the chute 4 as shown in FIG.
  • the interval 30 is formed between the lower end portion of the scraper tool 16 and the sliding surface of the chute 4, and a space 28 is also formed on the back side of the scraper tool 16.
  • the inside of the support frame 17 is filled with the sintered raw material 1. If the sintered raw material 1 is not discharged from the support frame 17, the scraper 15 comes to float after being completely filled with the sintered raw material 1. In this case, since the scraper 15 is restrained by the guide rail 35, it becomes difficult to move the scraper 15 and the scraping operation cannot be performed sufficiently.
  • a space 28 is formed inside the scraper tool 16 in the width direction of the chute 4 and continues to the outside of the scraper 15, and the sliding surface of the chute 4 and the vertical plate are formed.
  • the distance b between the lower end portion and the lower end portion of the scraper tool 16 was formed larger than the distance a.
  • the sintering raw material 1 is sequentially accumulated in the internal space 28 by the operation of the scraper 15.
  • the sintered raw material 1 accumulates to some extent and its weight increases, the sintered raw material 1 that newly enters the inside of the scraper tool 16 moves along the inside of the scraper tool 16. And it is discharged
  • the end of the notch 27 is inclined and connected to the gap below the front vertical plate 23, the sintering raw material 1 can flow smoothly. For this reason, the inside of the support frame 17 is not filled with the sintering raw material 1, and the scraper 15 moves smoothly.
  • Raw materials were scraped off.
  • a gap of 2 mm is provided between the lower end of the scraper tool and the upper surface of the chute, and a gap of 6 mm is provided between the lower end of the vertical plates (front vertical plate and rear vertical plate) and the upper surface of the chute.
  • a continuous space was formed on the inside of the scraper tool by diagonally notching the front end portions of the vertical plate arranged inside the support frame and the side plates arranged on both sides.
  • the sintering raw material accumulated to some extent inside the scraper (backward) with the operation, but the inside was not filled with the raw material, and the operation could be continued without any problems.
  • the distance between the lower end of the scraper tool and the upper surface of the chute and the distance between the lower end of the front vertical plate 23 and the upper surface of the chute are both 2 mm, and at the front end of the front vertical plate.
  • a scraper that does not form a notch and does not form a continuous space in the width direction of the chute on the back side of the scraper tool was used. In this case, the scraper was filled with the raw material 60 days after the operation, and clogging occurred, making it difficult to move the scraper.
  • the present invention since there is no problem of lifting of the scraper due to the sintered raw material left behind, sintering can be performed in a stable state. Therefore, the present invention is expected to have a large industrial effect. it can.

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Abstract

Provided is an apparatus for charging a sintering raw material, said apparatus comprising: a chute which charges the sintering raw material to a palette; and a scraper which moves back and forth on the chute and removes from the chute the sintering raw material that has accumulated on the chute. The scraper comprises: an inclined plate which is provided inclined with respect to the top surface of the chute; a scraping tool which is attached to the front end at the bottom surface side of the inclined plate; a support frame which supports the inclined plate; and a roller device which is attached to the support frame and causes the inclined plate and the support frame to travel on the top surface of the chute. The width dimension of the chute is at least substantially equal to the width dimension of the inclined plate.

Description

焼結機における原料装入装置Raw material charging equipment in sintering machine
 本発明は、ドワイトロイド式焼結機において、焼結原料をパレット上に装入する際に用いる焼結原料の装入装置に関し、特に、原料装入シュートに付着した焼結原料を除去するためのスクレパーを有する装入装置に関する。
 本願は、2010年03月12日に、日本に出願された特願2010-056348号及び2010年03月12日に、日本に出願された特願2010-056279号に基づき優先権を主張し、その内容をここに援用する。
The present invention relates to an apparatus for charging a sintered material used when a sintered material is charged onto a pallet in a Dwightroid-type sintering machine, and more particularly to remove the sintered material adhering to the material charging chute. The present invention relates to a charging device having a scraper.
This application claims priority based on Japanese Patent Application No. 2010-056348 filed in Japan on March 12, 2010 and Japanese Patent Application No. 2010-056279 filed on March 12, 2010 in Japan, The contents are incorporated here.
 ドワイトロイド式焼結機による焼結鉱製造プロセスにおいては、原料ホッパーからドラムフィーダーによって焼結原料を切り出し、シュート(スローピングシュートとも言われる)を介して焼結原料をパレット上へ装入する。
 その際、原料層の上層部には、下層部に比較して燃料分(カーボン源)を多く装入し、下層部には、上層部と比較して原料粒度が粗くなるように装入する。例えば、シュートの先端部に、ふるい棒をパレット方向に向けて段違いに設けた分級装置が用いられている(特許文献1参照)。
In a sinter production process using a dweroid type sintering machine, a sintered raw material is cut out from a raw material hopper by a drum feeder, and the sintered raw material is charged onto a pallet through a chute (also called a sloping chute).
At that time, the upper layer part of the raw material layer is charged with a larger amount of fuel (carbon source) than the lower layer part, and the lower layer part is charged so that the raw material particle size is coarser than that of the upper layer part. . For example, a classification device is used in which a sieve bar is provided in a stepped manner toward the pallet direction at the tip of the chute (see Patent Document 1).
 焼結原料は、造粒の際に添加された水分を含んでおり、付着しやすい性状を有している。そのため、焼結機の運転にともなって、シュートのすべり面(上面)上に徐々に原料が付着・堆積するようになり、焼結原料のスムーズな流れが阻害される。
 特に、シュートの上方側の原料落下地点では、原料の落下位置は絶えず変動しており、付着した原料が、上から落ちてくる次の原料によって洗らい落とされる機会が少なく、特に堆積しやすくなっている。これにより、定期的に付着原料を除去する必要が生じている。
 また、シュートの先端部に分級装置が取り付けられている場合は、より効果的に分級装置を機能させるためには、焼結原料の各粒が、シュート上を流れるように滑り落ちて、ふるい棒の上に降り注ぐ必要がある。しかしながら、焼結原料の流れが不規則になると、付着部分下の原料の装入状態が変化する可能性がある。
The sintered raw material contains moisture added during granulation and has a property of being easily adhered. Therefore, with the operation of the sintering machine, the raw material gradually adheres and accumulates on the sliding surface (upper surface) of the chute, and the smooth flow of the sintered raw material is hindered.
In particular, at the raw material falling point above the chute, the raw material falling position is constantly changing, and the attached raw material is less likely to be washed away by the next raw material falling from above, and it is particularly easy to deposit. ing. Thereby, it is necessary to periodically remove the attached raw material.
In addition, when a classifier is attached to the tip of the chute, in order to make the classifier function more effectively, each grain of the sintering raw material slides down so as to flow on the chute, It is necessary to pour onto the top. However, when the flow of the sintering raw material becomes irregular, the charging state of the raw material under the adhered portion may change.
 そこで、通常は、特許文献2、3に示すように、シュートのすべり面上を摺動するようなスクレパーを設け、それを定期的に作動させて、すべり面に付着・堆積した原料をこすり落として除去するようにしている。 Therefore, normally, as shown in Patent Documents 2 and 3, a scraper that slides on the sliding surface of the chute is provided, and it is periodically operated to scrape off the material adhering and depositing on the sliding surface. To be removed.
 ところで、ドラムフィーダーから切り出された原料は、シュートの上面の狭い範囲に落下するため、この範囲が他の範囲に比べて特に摩耗が早く起こりやすくなっている。シュートの上面に耐摩耗性の鋼板を使用した場合では摩耗が早く、鋼板の取替え頻度が増加する問題がある。
 その問題を解決するため、シュートの表面をセラミックタイルでライニングして、耐摩耗性を高め、シュートの取替え頻度を少なくする対策が取られている。
By the way, since the raw material cut out from the drum feeder falls in a narrow range on the upper surface of the chute, this range is particularly likely to wear faster than the other ranges. When a wear-resistant steel plate is used on the upper surface of the chute, there is a problem that the wear is quick and the replacement frequency of the steel plate increases.
In order to solve the problem, measures are taken to line the surface of the chute with ceramic tiles to increase wear resistance and reduce the frequency of chute replacement.
 セラミックタイルは、焼成にともなう歪を有しており、また、寸法公差として0.2mm程度のずれは許容されており、タイル個々の形状が微妙に異なる場合も多い。そのため、すべり面をセラミックタイルでライニングしたシュートでは、タイル間の継目に段差が形成されやすくなっている。 Ceramic tiles have distortions due to firing, and a deviation of about 0.2 mm is allowed as a dimensional tolerance, and the shape of each tile is often slightly different. Therefore, in a chute where the sliding surface is lined with ceramic tiles, a step is easily formed at the joint between the tiles.
 そのため、セラミックタイルを貼り付けたシュートを用いた場合には、耐摩耗性の鋼板を用いたシュートのようにスクレパーをすべり面上に直接滑らせることができない。したがって、スクレパーの底面に、ローラを取り付けて、タイル継ぎ目の段部をスクレパーがスムーズに乗り越えられるようにするとともに、スクレパーの下面をタイル表面から浮かせて支持する。この構成により、スクレパーの下面がタイル継ぎ目の段部に接触しないようにしている。 Therefore, when a chute with ceramic tiles is used, the scraper cannot be slid directly on the sliding surface like a chute using a wear-resistant steel plate. Therefore, a roller is attached to the bottom surface of the scraper so that the scraper can smoothly get over the step portion of the tile joint, and the lower surface of the scraper is supported by being floated from the tile surface. With this configuration, the lower surface of the scraper is prevented from contacting the step portion of the tile joint.
 スクレパーの下面をタイル表面から浮かせて焼結原料の掻き落としを行うと、付着した焼結原料の掻き残しが発生する。このような掻き残しが発生すると、その量が次第に増大し、スクレパーが浮き上がり、スクレパーの移動が困難になるという問題が発生する。 When scraping the sintered material by lifting the bottom surface of the scraper from the tile surface, scraping of the adhered sintered material occurs. When such scraping is generated, the amount of the scraper gradually increases and the scraper is lifted, which causes a problem that it becomes difficult to move the scraper.
 このような掻き残し原料によるスクレパーの浮き上がりの問題に対し、特許文献1では、スクレパーの底面に溝を設ける。その溝の角部によって焼結原料を掻き落とし、掻き落とした原料を、溝を通して機外に排出するようにしている。
 しかし、この装置は、底面が閉じた状態のスクレパーがシュート表面上を直接摺動する構成である。前述のように、底部をシュート表面から浮かした状態で摺動させる構成のスクレパーには適用することはできない技術である。
In Patent Document 1, a groove is provided on the bottom surface of the scraper to solve the problem of the scraper floating due to the raw material left behind. The sintered raw material is scraped off by the corners of the groove, and the scraped raw material is discharged out of the machine through the groove.
However, this apparatus has a configuration in which the scraper with the bottom face closed slides directly on the chute surface. As described above, this technique cannot be applied to a scraper configured to slide in a state where the bottom portion is floated from the chute surface.
日本国特開平2-195193号公報Japanese Patent Laid-Open No. 2-195193 日本国特開2005-282915号公報Japanese Unexamined Patent Publication No. 2005-282915 日本国実公平3-54398号公報Japanese National Fair No. 3-54398
 本発明は、スクレパーの強度を確保し、スクレパーの下面がシュート表面から浮き上がるのを防止し、安定した状態で操業することができる焼結原料の装入装置の提供を目的とする。 The object of the present invention is to provide a charging apparatus for a sintered raw material that ensures the strength of the scraper, prevents the lower surface of the scraper from floating from the chute surface, and can be operated in a stable state.
 本発明は、上記課題を解決して係る目的を達成するために以下の手段を採用した。
 すなわち、
 (1)本発明の一態様に係る焼結原料の装入装置は、焼結原料をパレット上へ装入させるシュートと;前記シュート上を往復移動して、かつ、前記シュート上に堆積した前記焼結原料を前記シュートから除去するスクレパーと;を備え、前記スクレパーが、前記シュートの上面に対して傾斜して設けられた傾斜板と、前記傾斜板の下面側の前端に取付けられたスクレパー工具と、前記傾斜板を支持する支持枠体と、前記支持枠体に取付けられ、かつ、前記傾斜板及び前記支持枠体を前記シュートの前記上面上において走行させるローラ装置とを有しており;前記シュートの幅寸法が前記傾斜板の幅寸法と少なくとも実質的に同一である。
The present invention employs the following means in order to solve the above problems and achieve the object.
That is,
(1) A charging apparatus for a sintering raw material according to an aspect of the present invention includes a chute for charging a sintering raw material onto a pallet; the reciprocating movement on the chute, and the deposit on the chute A scraper that removes the sintering raw material from the chute, the scraper being inclined with respect to the upper surface of the chute, and a scraper tool attached to the front end of the lower surface side of the inclined plate And a support frame that supports the inclined plate, and a roller device that is attached to the support frame and causes the inclined plate and the support frame to travel on the upper surface of the chute; The width dimension of the chute is at least substantially the same as the width dimension of the inclined plate.
 (2)上記(1)に記載の焼結原料の装入装置は、前記スクレパー工具の後方に、前記シュートの幅方向に連続し、かつ、前記スクレパーの外部に連通する空間が形成されていることが好ましい。
 (3)上記(2)に記載の焼結原料の装入装置は、前記支持枠体が、前記傾斜板の前方側まで延びる縦補強板と、前記傾斜板の幅方向に延びる横補強板と、前記シュートに対して平行な方向に延びる平行補強板とを有し;前記縦補強板の先端に斜めの切り欠き部が形成されることによって、前記空間が形成されることが好ましい。
 (4)上記(1)に記載の焼結原料の装入装置は、前記スクレパー工具及び前記支持枠体が、前記シュートの上面から間隔をおいて前記ローラ装置によって支持され;前記シュートの前記上面と前記支持枠体の下端部との間の間隔は、前記シュートの前記上面と前記スクレパー工具の下端部との間の間隔よりも大きいことが好ましい。
 (5)上記(1)に記載の焼結原料の装入装置は、前記スクレパー工具が前記シュートの前端に達したとき、前記傾斜板が、前記焼結原料の落下位置をカバーする長さであることが好ましい。
 (6)上記(1)に記載の焼結原料の装入装置は、前記シュートが、基板と、前記基板の表面に配置された複数のセラミックタイルとを備えることが好ましい。
 (7)上記(6)に記載の焼結原料の装入装置は、前記焼結原料の流れ方向から見て、前記複数のセラミックタイルのうちの一つである第1のセラミックタイルと、前記第1のセラミックタイルの下流側に隣接する第2のセラミックタイルとの位置関係は、面一である、あるいは、前記第1のセラミックタイルが前記第2のセラミックタイルに対して突出していることが好ましい。
 (8)上記(6)に記載の焼結原料の装入装置は、前記セラミックタイルの角部に曲面が形成され;前記曲面が形成された前記セラミックタイルの表面を接着面として前記基板に接着されていることが好ましい。
 (9)上記(6)に記載の焼結原料の装入装置は、前記セラミックタイルが、前記基板上の前記焼結原料の落下地点を中心として部分的に設けられていることが好ましい。
(2) The sintering raw material charging device described in (1) above has a space that is continuous in the width direction of the chute and communicates with the outside of the scraper behind the scraper tool. It is preferable.
(3) In the charging apparatus for a sintering raw material according to (2), the support frame has a vertical reinforcing plate that extends to the front side of the inclined plate, and a horizontal reinforcing plate that extends in the width direction of the inclined plate. It is preferable that the space is formed by forming a diagonal notch at the tip of the longitudinal reinforcing plate. The parallel reinforcing plate extends in a direction parallel to the chute.
(4) In the sintering raw material charging device described in (1) above, the scraper tool and the support frame are supported by the roller device at a distance from the upper surface of the chute; It is preferable that the space | interval between the lower end part of the said support frame body is larger than the space | interval between the said upper surface of the said chute | shoot, and the lower end part of the said scraper tool.
(5) The sintered raw material charging apparatus according to (1) is configured such that when the scraper tool reaches the front end of the chute, the inclined plate covers a position where the sintered raw material falls. Preferably there is.
(6) In the charging apparatus for a sintering raw material according to (1), the chute preferably includes a substrate and a plurality of ceramic tiles arranged on the surface of the substrate.
(7) The charging device for the sintered raw material according to (6) described above, when viewed from the flow direction of the sintered raw material, the first ceramic tile that is one of the plurality of ceramic tiles; The positional relationship between the second ceramic tile adjacent to the downstream side of the first ceramic tile is flush, or the first ceramic tile protrudes with respect to the second ceramic tile. preferable.
(8) The sintering raw material charging apparatus according to (6), wherein a curved surface is formed at a corner of the ceramic tile; the surface of the ceramic tile on which the curved surface is formed is bonded to the substrate as an adhesive surface It is preferable that
(9) In the sintered raw material charging apparatus described in (6) above, it is preferable that the ceramic tile is partially provided around a point where the sintered raw material falls on the substrate.
 上記(1)に記載の焼結原料の装入装置によれば、傾斜板を支持する支持枠体が設けられているので、シュート上に付着した焼結原料を除去する際、スクレパーの強度を十分に向上させることできる。その結果、スクレパーの下面がシュートの表面から浮き上がるのを防止し、安定した状態で操業することができる。 According to the charging apparatus for the raw material of sintering described in (1) above, since the support frame for supporting the inclined plate is provided, the strength of the scraper is reduced when removing the raw material of sintering attached to the chute. It can be improved sufficiently. As a result, it is possible to prevent the lower surface of the scraper from floating from the surface of the chute and to operate in a stable state.
 上記(2)に記載の焼結原料の装入装置によれば、スクレパー工具の後方に、スクレパーの外部に連なる空間が形成されているので、この空間を通して、スクレパー工具の後方に蓄積される焼結原料をスクレパーの外部に排出することができる。したがって、スクレパー工具の後方に焼結原料が蓄積され、スクレパーが浮き上がるのを防止することができる。この結果、焼結原料の装入を安定的に実施することができる。 According to the charging apparatus for the sintering raw material described in (2) above, since the space connected to the outside of the scraper is formed behind the scraper tool, the burning accumulated in the rear of the scraper tool through this space. The raw material can be discharged outside the scraper. Therefore, the sintering raw material is accumulated behind the scraper tool, and the scraper can be prevented from floating. As a result, the charging of the sintered raw material can be carried out stably.
 上記(3)に記載の焼結原料の装入装置によれば、支持枠体が、縦補強板と横補強板と平行補強板と有しているため、スクレパーの強度をさらに向上させることができる。 According to the sintering raw material charging apparatus described in (3) above, since the support frame has the vertical reinforcing plate, the horizontal reinforcing plate, and the parallel reinforcing plate, the strength of the scraper can be further improved. it can.
 上記(4)に記載の焼結原料の装入装置によれば、スクレパーの下面をシュートの上面から浮かした状態で動作させる場合でも、スクレパーの作動にともなってスクレパー工具の内側に蓄積される焼結原料を、シュートの上面と支持枠体の下端部との間の間隔を通して機外に排出することができる。これにより、スクレパーの浮き上がりの問題を発生させることなく、焼結原料の装入を安定的に実施することができる。 According to the apparatus for charging a sintered raw material described in (4) above, even when the scraper is operated with the lower surface of the scraper floating above the upper surface of the chute, the sintering material accumulated inside the scraper tool as the scraper operates. The binding material can be discharged out of the machine through the space between the upper surface of the chute and the lower end of the support frame. Thereby, it is possible to stably carry in the charging of the sintered raw material without causing the problem of the scraper floating.
 上記(5)に記載の焼結原料の装入装置によれば、傾斜板が焼結原料の落下位置をカバーする長さであるため、装入装置の操業中もスクレパーを作動させることができ、シュート上に付着した焼結原料を除去することが可能となる。 According to the charging apparatus for the sintered material described in (5) above, since the inclined plate is long enough to cover the position where the sintered material is dropped, the scraper can be operated even during operation of the charging apparatus. It becomes possible to remove the sintering raw material adhering to the chute.
 上記(6)に記載の焼結原料の装入装置によれば、シュートの基板の表面には複数のセラミックタイルが配置されているので、シュートの磨耗を抑えることができる。これにより、シュートの取替え頻度を少なくすることが可能となる。 According to the sintering material charging apparatus described in (6) above, since a plurality of ceramic tiles are arranged on the surface of the substrate of the chute, wear of the chute can be suppressed. This makes it possible to reduce the frequency of chute replacement.
 上記(7)に記載の焼結原料の装入装置によれば、原料粒子の跳ね上がりが起こらなくなり、焼結原料を効率良くシュートに供給することが可能となる。 According to the charging apparatus for the sintered raw material described in (7) above, the raw material particles do not jump up and the sintered raw material can be efficiently supplied to the chute.
 ここで、曲面が形成されたセラミックタイルの表面をすべり面側に並べると窪みが形成され、この窪みに沿って焼結原料が流れてしまう。そこで、上記(8)に記載の焼結原料の装入装置によれば、曲面が形成されたセラミックタイルの表面を接着面として基板に接着されているため、焼結原料を円滑に下流側へ流すことが可能となる。 Here, when the surface of the ceramic tile having a curved surface is arranged on the sliding surface side, a recess is formed, and the sintering raw material flows along this recess. Therefore, according to the apparatus for charging a sintered material described in (8) above, since the surface of the ceramic tile having a curved surface is bonded to the substrate as an adhesive surface, the sintered material is smoothly moved downstream. It is possible to flow.
 上記(9)に記載の焼結原料の装入装置によれば、セラミックタイルが焼結原料の落下地点を中心として部分的に設けられているため、コストを抑えるとともに、効果良くシュートの摩耗を抑えることが可能となる。 According to the charging apparatus for the sintered material described in (9) above, since the ceramic tile is partially provided around the point where the sintered material falls, the cost can be reduced and the chute can be worn effectively. It becomes possible to suppress.
本発明の一実施形態に係る焼結原料の装入装置の概略図である。It is the schematic of the charging apparatus of the sintering raw material which concerns on one Embodiment of this invention. 本発明の実施の態様に係る焼結原料の装入装置の拡大図である。It is an enlarged view of the charging apparatus of the sintering raw material which concerns on the embodiment of this invention. 図2のスクレパーの詳細図である。FIG. 3 is a detailed view of the scraper of FIG. 2. 同スクレパーの前部の詳細図である。It is detail drawing of the front part of the scraper. セラミックタイルでライニングされたシュートの正面図である。It is a front view of the chute lined with ceramic tiles. セラミックタイルでライニングされたシュートのタイル継目部の詳細を説明する図である。It is a figure explaining the detail of the tile joint part of the chute lined with the ceramic tile. 同スクレパーの全体を示す平面図である。It is a top view which shows the whole scraper. 図7のA-A線矢視図であり、同スクレパーの支持枠体の構造の一例を示す図である。FIG. 8 is a view taken along the line AA in FIG. 7 and shows an example of the structure of the support frame of the scraper. 図7のB-B線矢視図である。FIG. 8 is a view taken along line BB in FIG. 7. 同スクレパーに設けられたサイドガイド装置を示す図である。It is a figure which shows the side guide apparatus provided in the scraper.
 以下、本発明の焼結原料の装入装置の実施の形態を、図を用いて詳細に説明する。また、焼結原料の流れ方向の下流側を前方、上流側を後方とする。
 図1及び図2に示すように、焼結原料の装入装置Aは、シュート4と、スクレパー15とを備えている。シュート4は、ドラムフィーダー3と焼結機のパレット7との間に設けられ、ドラムフィーダー3によって切り出された焼結原料をパレット7上に供給する(装入する)。このシュート4は、図2に示すように、パレット7の搬送方向に沿って敷設された一対のレール10上を走行する支持台車11上に取り付けられる。
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a charging apparatus for a sintered material according to the present invention will be described in detail with reference to the drawings. Further, the downstream side in the flow direction of the sintering raw material is the front, and the upstream side is the rear.
As shown in FIGS. 1 and 2, the sintered raw material charging device A includes a chute 4 and a scraper 15. The chute 4 is provided between the drum feeder 3 and the pallet 7 of the sintering machine, and supplies (charges) the sintered raw material cut out by the drum feeder 3 onto the pallet 7. As shown in FIG. 2, the chute 4 is attached on a support carriage 11 that travels on a pair of rails 10 laid along the conveying direction of the pallet 7.
 支持台車11にはシュート4を傾動可能に支持する傾動架台12が取り付けられている。この傾動架台12の一端側は、支持台車11の枠体に取り付けられた軸体13によって回転できるように支持されている。また、傾動架台12の他端側には、支持台車11の枠体に回転できるように取り付けられた駆動シリンダ装置14のロッドが連結されている。このロッドの伸縮によって、シュート4及びスクレパー15を所望の傾斜角度に調整できるようになっている。
 図2では、シュート4の先に、特許文献1で示されるような、ふるい棒6を有する分級装置5を取付けた例を示している。
 この支持台車11の位置に対する傾動架台12の傾斜角度によって、シュート4とドラムフィーダー3との距離やシュート4の傾斜角度を調整できる。
A tilting base 12 for supporting the chute 4 so as to be tiltable is attached to the support carriage 11. One end side of the tilting gantry 12 is supported so as to be rotatable by a shaft body 13 attached to the frame body of the support carriage 11. Further, the other end of the tilting frame 12 is connected to a rod of a drive cylinder device 14 that is attached to the frame of the support carriage 11 so as to be rotatable. By expanding and contracting the rod, the chute 4 and the scraper 15 can be adjusted to a desired inclination angle.
FIG. 2 shows an example in which a classifier 5 having a sieve bar 6 as shown in Patent Document 1 is attached to the tip of the chute 4.
The distance between the chute 4 and the drum feeder 3 and the inclination angle of the chute 4 can be adjusted by the inclination angle of the tilting gantry 12 with respect to the position of the support carriage 11.
 図1に示した装入装置では、ふるい棒6に焼結原料が付着しないように、ふるい棒6を回転させている。図2では、傾動架台12とシュート4との間にふるい棒6を回転駆動する駆動装置32などが設けられている例を示しているが、分級装置の形式によっては、シュート4を傾動架台12に直接取付けることもできる。 In the charging apparatus shown in FIG. 1, the sieve rod 6 is rotated so that the sintering raw material does not adhere to the sieve rod 6. FIG. 2 shows an example in which a drive device 32 for rotationally driving the sieve rod 6 is provided between the tilting frame 12 and the chute 4. However, depending on the type of the classifying device, the chute 4 is tilted. It can also be installed directly on.
 シュート4上にはスクレパー15が配置される。このスクレパー15は、図2及び図3に示すように、傾斜板18と、スクレパー工具16と、支持枠体17と、ローラ装置19とを備えている。傾斜板18は、シュート4の上面に対して傾斜して設けられ、支持枠体17を介して取付けられている。スクレパー工具16は、傾斜板18の下面18a側の前端部に取付けられている。支持枠体17は傾斜板18を支持する。ローラ装置19は、支持枠体17に取付けられ、かつ、傾斜板18及び支持枠体17をシュート4の上面4a上において走行させる。 A scraper 15 is disposed on the chute 4. As shown in FIGS. 2 and 3, the scraper 15 includes an inclined plate 18, a scraper tool 16, a support frame 17, and a roller device 19. The inclined plate 18 is provided to be inclined with respect to the upper surface of the chute 4 and is attached via a support frame body 17. The scraper tool 16 is attached to the front end of the inclined plate 18 on the lower surface 18a side. The support frame 17 supports the inclined plate 18. The roller device 19 is attached to the support frame body 17 and causes the inclined plate 18 and the support frame body 17 to travel on the upper surface 4 a of the chute 4.
 このスクレパー15は、シュート4上を往復移動して、かつ、シュート4上に堆積した焼結原料をシュート4から除去する。スクレパー4は、具体的には、シュート4上を移動して、スクレパー工具16によって、シュート4のすべり面(上面)に付着した焼結原料をこすり落としてシュート4から除去する。 The scraper 15 reciprocates on the chute 4 and removes the sintered raw material deposited on the chute 4 from the chute 4. Specifically, the scraper 4 moves on the chute 4, and the scraping material attached to the sliding surface (upper surface) of the chute 4 is scraped off and removed from the chute 4 by the scraper tool 16.
 また、ローラ装置19は、図4に示すように、支持枠体17の下端17a及びスクレパー工具16の下端16aをシュート4の上面4aから間隔をあけて支持している。これにより、セラミックタイル9を貼り付けたシュート4を用いた場合でも、支持枠体17及びスクレパー工具16が、図6に示すように、セラミックタイル9の角部に衝突しないようにするとともに、セラミックタイル9の継ぎ目に形成された段部d2をスクレパー15がスムーズに乗り越えられる構成となっている。 Further, as shown in FIG. 4, the roller device 19 supports the lower end 17 a of the support frame 17 and the lower end 16 a of the scraper tool 16 with a space from the upper surface 4 a of the chute 4. Accordingly, even when the chute 4 with the ceramic tile 9 attached is used, the support frame 17 and the scraper tool 16 do not collide with the corners of the ceramic tile 9 as shown in FIG. The scraper 15 can smoothly get over the step portion d2 formed at the joint of the tile 9.
 スクレパー15は、図4に示すように、傾斜板18に取付けられたスクレパー工具16を、シュート4の後端部から前端部まで移動できるように駆動機構と連結されている。図では、駆動装置としてシリンダ装置20を用い、シリンダ装置20のロッドである可撓継手を介して支持枠体17に連結した例を示している。 As shown in FIG. 4, the scraper 15 is connected to a drive mechanism so that the scraper tool 16 attached to the inclined plate 18 can be moved from the rear end portion to the front end portion of the chute 4. In the figure, an example is shown in which a cylinder device 20 is used as a drive device and is connected to a support frame body 17 via a flexible joint which is a rod of the cylinder device 20.
 スクレパー15は、図2に示すように、付着原料を除去する動作の途中で、焼結原料の落下範囲Lに到達する。それ以後、焼結原料はスクレパー15の傾斜板18上を滑り落ちてパレット7に供給される。
 スクレパー15が付着原料の除去動作中も原料の装入を中断することのないようにするためには、傾斜板18はシュート4の機能を有する必要がある。このため、傾斜板18は、シュート4に対して傾斜して配置されており、その表面は耐摩耗性の鋼板やセラミックタイルなどによってライニングされている。
As shown in FIG. 2, the scraper 15 reaches the fall range L of the sintered raw material during the operation of removing the attached raw material. Thereafter, the sintering raw material slides down on the inclined plate 18 of the scraper 15 and is supplied to the pallet 7.
In order to prevent the scraper 15 from interrupting the charging of the raw material even during the operation of removing the adhered raw material, the inclined plate 18 needs to have the function of the chute 4. For this reason, the inclined plate 18 is disposed so as to be inclined with respect to the chute 4, and the surface thereof is lined with a wear-resistant steel plate or ceramic tile.
 次に、本実施形態におけるセラミックタイル9の配置について説明する。
 シュート4は、図6に示すように、シュート本体114と、シュート本体114の表面に配置された複数のセラミックタイル9とを備えている。
 図1で示すような、シュート4の先端部に、ふるい棒6をパレットに向けて段違いに設けた焼結原料1の装入装置においても、図5に示すように、シュート4のすべり面をセラミックタイル9でライニングして、シュート4の摩耗を防止することができる。
 すべり面をセラミックタイル9でライニングしたシュート4は、鋼板をすべり面とするシュートに比べて、表面が一様ではない。特に、図6に示すようにタイルの継目に段差が形成されやすく、段差をなくして鋼板のように全体を平滑にすることは、非常に困難である。
 もし、焼結原料の流れ方向から見て下流側のタイルの角部が、上流側のタイルの角部より上方に突出して高くなっていると、そこに段差d1が形成される。その段差に衝突した原料粒子は、そこで跳ね上がることになり、原料粒子の流れが不規則になると考えられる。
Next, the arrangement of the ceramic tiles 9 in this embodiment will be described.
As shown in FIG. 6, the chute 4 includes a chute body 114 and a plurality of ceramic tiles 9 arranged on the surface of the chute body 114.
As shown in FIG. 5, the sliding surface of the chute 4 is also provided in the charging apparatus for the sintered raw material 1 in which the sieve rod 6 is provided in a stepped manner toward the pallet at the tip of the chute 4 as shown in FIG. Lining with the ceramic tile 9 can prevent the chute 4 from being worn.
The chute 4 whose slip surface is lined with the ceramic tile 9 has a non-uniform surface compared to a chute having a steel plate as a slip surface. In particular, as shown in FIG. 6, a step is easily formed at the joint of the tile, and it is very difficult to eliminate the step and smooth the whole like a steel plate.
If the corner of the downstream tile is higher than the corner of the upstream tile when viewed from the flow direction of the sintering raw material, the step d1 is formed there. It is considered that the raw material particles that collided with the step jump up there, and the flow of the raw material particles becomes irregular.
 そこで、タイルの並べ方をいろいろ試して、焼結原料1の流れ方向Dから見て、複数のセラミックタイル9のうちの一つである第1のセラミックタイル9aと、第1のセラミックタイル9aの下流側に隣接する第2のセラミックタイル9bとの位置関係は、望ましくは面一にする。あるいは、図6に示すように、第1のセラミックタイル9aが第2のセラミックタイル9bに対して突出するように段差d2が形成されていることが好ましい。
 具体的には、上流から下流に向けて隣接するセラミックタイル9の間に段差がないか、段差が形成されても、必ず下流側が低くなるようにする。即ち、下向きの段差d2(図6参照)が形成されるようにして、上向きの段差d1が形成されないようにしたところ、原料粒子の跳ね上がりが起きないようになり、ふるい棒6への焼結原料の付着が、鋼板を用いていたのと同程度まで低減した。
Therefore, various ways of arranging the tiles were tried, and when viewed from the flow direction D of the sintering raw material 1, the first ceramic tile 9a, which is one of the plurality of ceramic tiles 9, and the downstream of the first ceramic tile 9a. The positional relationship with the second ceramic tile 9b adjacent to the side is desirably flush. Or as shown in FIG. 6, it is preferable that the level | step difference d2 is formed so that the 1st ceramic tile 9a may protrude with respect to the 2nd ceramic tile 9b.
Specifically, there is no step between the adjacent ceramic tiles 9 from upstream to downstream, or the downstream side is necessarily lowered even if a step is formed. That is, when the downward step d2 (see FIG. 6) is formed and the upward step d1 is not formed, the raw material particles are prevented from jumping up, and the raw material for sintering to the sieve rod 6 is prevented. Was reduced to the same level as when steel plates were used.
 セラミックタイル9は、焼成にともなう歪を有しており、タイル個々の形状が微妙に異なる場合も多い。また、寸法公差として0.2mm程度のずれは許容されている。このため、タイルを単に並べただけでは、タイル間の継目に段差が形成されやすい。
 そのため、セラミックタイル9をタイル基板112に接着剤113によって接着する前に、予めタイルを並べてみて、段差の発生の程度を確認する必要がある。
The ceramic tile 9 has a distortion caused by firing, and the shape of each tile is often slightly different. Further, a deviation of about 0.2 mm is allowed as a dimensional tolerance. For this reason, if the tiles are simply arranged, a step is easily formed at the joint between the tiles.
Therefore, before the ceramic tile 9 is bonded to the tile substrate 112 with the adhesive 113, it is necessary to check the degree of occurrence of the step by arranging the tiles in advance.
 もし下流側が突出する上向きの段差d1が形成された場合には、別のタイルに置き換えて、段差をなくすか、段差が形成されても必ず上流側が突出する下向きの段差d2が形成されるようにする。
 また、種々の並び替えを行っても上向きの段差が残る場合や段差が微小な場合には、突出する部分を研磨して除去し、段差をなくすようにする。その場合、研磨にともなってセラミックタイル9の表面の表面粗さが増加すると、焼結原料1がセラミックタイル9に付着しやすくなるので、元のセラミックタイル9の表面と同様の平滑さに仕上げる必要がある。
If an upward step d1 protruding downstream is formed, it is replaced with another tile so that the step is eliminated, or a downward step d2 protruding upstream is always formed even if a step is formed. To do.
In addition, if an upward step remains or is small after various rearrangements, the protruding portion is removed by polishing so that the step is eliminated. In that case, if the surface roughness of the surface of the ceramic tile 9 increases with polishing, the sintered raw material 1 tends to adhere to the ceramic tile 9, so it is necessary to finish it to the same smoothness as the surface of the original ceramic tile 9. There is.
 セラミックタイルの多くは、一方の表面の角部9cには、角が落とされてRが形成された形状になっている。その場合、Rの形成されている面を原料のすべり面側として並べると、目地の部分に窪みができる。その部分を接着剤で埋めたとしても、すぐに接着剤は摩耗して、窪みが形成されることになる。
 そのような窪みは、原料が窪みに沿って流れやすくなるので、原料の一様な流れを阻害する要因になる。そのため、図6に示すように、Rが形成されているセラミックタイル9の表面を接着面としてタイル基板(基板)112に接着することが好ましい。
Many of the ceramic tiles have a shape in which a corner is dropped and an R is formed at a corner portion 9c on one surface. In that case, when the surface on which R is formed is arranged as the sliding surface side of the raw material, a recess is formed in the joint portion. Even if the portion is filled with an adhesive, the adhesive will soon wear and a depression will be formed.
Such a depression becomes a factor that hinders the uniform flow of the raw material because the raw material easily flows along the depression. Therefore, as shown in FIG. 6, it is preferable that the surface of the ceramic tile 9 on which R is formed be bonded to the tile substrate (substrate) 112 with the bonding surface as the bonding surface.
 タイルを升目状に貼り付けた場合には目地が連続するようになり、原料粒子が、その目地に沿って流れやすくなる。その結果、その目地部に対応するパレット位置での原料の粒度分布が乱れて、焼結鉱の品質が一定でなくなる。そこで、各タイルは、図5に示すようにタイルの目地(継ぎ目)が、連続しないように千鳥格子状に配置するのが好ましい。 When the tiles are pasted in a grid pattern, the joints become continuous, and the raw material particles easily flow along the joints. As a result, the particle size distribution of the raw material at the pallet position corresponding to the joint portion is disturbed, and the quality of the sintered ore is not constant. Therefore, it is preferable to arrange the tiles in a staggered pattern so that the joints (joints) of the tiles do not continue as shown in FIG.
 シュート4は、すべり面の全てをセラミックタイル9でライニングする必要はない。すなわち、セラミックタイル9がタイル基板112上の焼結原料1の落下地点を中心として部分的に設けられていることが好ましい。具体的には、ドラムフィーダー3から落下した焼結原料1がシュート4に衝突する領域及びその近傍だけをライニングしても良い。この場合でもセラミックタイル9を使用する効果は充分に得られる。図5にそのような例を示した。 The chute 4 does not have to be lined with ceramic tiles 9 on the entire sliding surface. That is, it is preferable that the ceramic tile 9 is partially provided around the dropping point of the sintered raw material 1 on the tile substrate 112. Specifically, only the region where the sintered raw material 1 dropped from the drum feeder 3 collides with the chute 4 and its vicinity may be lined. Even in this case, the effect of using the ceramic tile 9 can be sufficiently obtained. FIG. 5 shows such an example.
 セラミックタイル9を接着したタイル基板112の取り付け方としては、上端側は、原料の落下位置外に位置しているため、表側からボルト115を挿入して(図5参照)、タイル基板112をシュート本体114に固定することが可能である。セラミックタイル9の下端側は、シュート本体114裏側からボルト115などにより固定する。 As for the method of attaching the tile substrate 112 to which the ceramic tile 9 is bonded, since the upper end side is located outside the raw material dropping position, a bolt 115 is inserted from the front side (see FIG. 5) to chute the tile substrate 112. It can be fixed to the main body 114. The lower end side of the ceramic tile 9 is fixed from the back side of the chute body 114 with a bolt 115 or the like.
 以下、本実施形態におけるセラミックタイル9を用いた場合の効果について説明する。
 幅3.5mのシュートの原料落下部分を原料流れ方向の幅60cmにわたってセラミックタイルでライニングした。100×100×10t(mm)のアルミナ製のセラミックタイルを用いた。
 タイルを図5のように千鳥格子状に隙間なく並べた。
 本実施形態としては、セラミックタイル9を種々並べなおして上向きの段差d1が形成されないようにしたシュート4を用いた。
 比較例としては、段差の向きを考慮することなく、単純にタイルを並べており、上向きの段差d1が12箇所形成されているシュートを用いた。
Hereinafter, the effect at the time of using the ceramic tile 9 in this embodiment is demonstrated.
The raw material falling part of the chute having a width of 3.5 m was lined with ceramic tile over a width of 60 cm in the raw material flow direction. A 100 × 100 × 10 t (mm) alumina ceramic tile was used.
Tiles were arranged in a staggered pattern without gaps as shown in FIG.
In this embodiment, the chute 4 is used in which the ceramic tiles 9 are rearranged in various ways so that the upward step d1 is not formed.
As a comparative example, a chute was used in which tiles were simply arranged without considering the direction of the step and 12 upward steps d1 were formed.
 以上のようにセラミックタイル9でライニングされたシュートを用いて、図1に示す分級装置を有する装入装置によって、焼結原料をドワイトロイド式焼結機のパレットに装入した。
 その結果、比較例のシュートを用いた場合では、14日後にシュートのふるい棒に、原料が付着し、3mm径のふるい棒が10mm径になったので、原料を落とす作業が必要になった。これに対し、本実施形態のシュートを用いた場合では、付着した原料を落とす作業が必要になったのは70日後であった。
Using the chute lined with the ceramic tile 9 as described above, the sintering raw material was charged into the pallet of the Dwytroid-type sintering machine by the charging device having the classification device shown in FIG.
As a result, when the chute of the comparative example was used, the raw material adhered to the sieve rod of the chute after 14 days, and the 3 mm diameter sieve rod became 10 mm in diameter. Therefore, it was necessary to drop the raw material. On the other hand, in the case of using the chute of this embodiment, it was 70 days after the work of dropping the attached raw material was required.
 次に、傾斜板18について説明する。傾斜板18は、図2に示すように、上流側に向かうに伴いシュート4との間隔が広がるように、シュート4に対して傾斜して配置されている。
 傾斜板18は、スクレパー15のスクレパー工具16がシュート4の前端位置まで到達したとき、焼結原料1の落下範囲(落下位置)をカバーする長さであることが好ましい。本実施形態において、傾斜板18の進行方向(焼結原料が流れる方向)に沿った縦幅は、その条件を満たす幅に形成されている。
Next, the inclined plate 18 will be described. As shown in FIG. 2, the inclined plate 18 is arranged to be inclined with respect to the chute 4 so that the distance from the chute 4 increases as it goes upstream.
The inclined plate 18 preferably has a length that covers the falling range (falling position) of the sintered raw material 1 when the scraper tool 16 of the scraper 15 reaches the front end position of the chute 4. In this embodiment, the vertical width along the traveling direction of the inclined plate 18 (the direction in which the sintering raw material flows) is formed to a width that satisfies the condition.
 図7に、スクレパー15の全体の平面図を示す。シュート4の幅寸法L1が傾斜板の18幅寸法L2と少なくとも実質的に同一であることが好ましく、本実施形態では、シュート4の幅寸法L1と傾斜板の18幅寸法L2とが等しい。これにより、スクレパー15は横方向に伸張した形状であり、傾斜板18の横幅は、シュート4の幅をカバーできる幅となっている。 FIG. 7 shows a plan view of the entire scraper 15. The width L1 of the chute 4 is preferably at least substantially the same as the 18 width L2 of the inclined plate. In this embodiment, the width L1 of the chute 4 and the 18 width L2 of the inclined plate are equal. Accordingly, the scraper 15 has a shape extending in the lateral direction, and the lateral width of the inclined plate 18 is a width that can cover the width of the chute 4.
 図7の例では、両側の2箇所にシリンダ装置20を配置し、その内側の2箇所にガイドロッド21を配置してそれぞれの先端を支持枠体17に連結する。さらに、支持枠体17に2台1組のローラ装置19が5箇所取付けられている。この構成により、スクレパー15がシュート4上を円滑に往復動することが可能となる。
 また、図9に示すように、スクレパー15の支持枠体17の側部に、ブラケット33を介して下向き及び横向きにガイドローラ34を取り付けている。傾動架台12上のシュート4側に固定したガイドレール35にそれぞれ接触させて、スクレパー15の左右の案内と、浮き上がりの防止を図っている。
In the example of FIG. 7, the cylinder devices 20 are disposed at two locations on both sides, and guide rods 21 are disposed at two locations on the inside of the cylinder devices 20, and the respective tips are connected to the support frame body 17. Further, two sets of roller devices 19 are attached to the support frame 17 at five locations. With this configuration, the scraper 15 can smoothly reciprocate on the chute 4.
As shown in FIG. 9, a guide roller 34 is attached to the side of the support frame 17 of the scraper 15 downward and laterally via a bracket 33. The guide rail 35 fixed on the side of the chute 4 on the tilting pedestal 12 is brought into contact with each other to guide the left and right guides of the scraper 15 and prevent the lift.
 傾斜板18の先端部には、図4に示すように、付着した焼結原料を掻き落すためのスクレパー工具16が固定される。このスクレパー工具16は、耐摩耗性のある鋼材を用いて形成され、断面形状が矩形の棒状をしており、傾斜板18の下面に固定されたベース部材22にボルトなどを用いて交換可能に取り付けられる。
 また、シュート4表面に対する傾斜板18の傾斜角度は、できるだけ小さく形成されているのが望ましい。しかしながら、スクレパー15は、横に伸張した形状となっているので、あまり傾斜角度が小さいと、補強板の幅が充分とれない。これにより、特に横方向の中央部に充分な強度を確保できなくなり、中央部が浮き上がったりして、十分な除去効果が発揮できない可能性がある。そこでこの点を考慮して、傾斜板18の傾斜角度や補強板の構成を決める必要がある。具体的には、傾斜板18とシュート4とのなす角度は5°~35°程度であることが好ましい。
As shown in FIG. 4, a scraper tool 16 for scraping off the adhering sintered material is fixed to the tip of the inclined plate 18. The scraper tool 16 is formed of a wear-resistant steel material, has a rectangular cross-sectional shape, and can be replaced with a base member 22 fixed to the lower surface of the inclined plate 18 using bolts or the like. It is attached.
Further, it is desirable that the inclination angle of the inclined plate 18 with respect to the surface of the chute 4 is formed as small as possible. However, since the scraper 15 has a shape extending laterally, if the inclination angle is too small, the width of the reinforcing plate cannot be sufficiently obtained. As a result, a sufficient strength cannot be secured particularly in the central portion in the lateral direction, and the central portion may be lifted up, so that a sufficient removal effect may not be exhibited. In view of this, it is necessary to determine the inclination angle of the inclined plate 18 and the configuration of the reinforcing plate. Specifically, the angle formed between the inclined plate 18 and the chute 4 is preferably about 5 ° to 35 °.
 図8A及び図8Bに、支持枠体17の構造の一例を示す。
 図8Aは図7のA-A線矢視図であり、支持枠体17の両端部と、内部4箇所の構造を示している。
 支持枠体17は、図8A及び図8Bに示すように、縦横及び水平に配置された複数の補強板を有している。この複数の補強板は、本実施形態では、前部縦板(縦補強板)23と、中心横板(横補強板)25と、水平板(平行補強板)26とを有している。
 前部縦板23は、焼結原料1の流れ方向に沿って傾斜板18の前方側まで延びている。中心横板25は、シュート4及び傾斜板18の幅方向に伸びている。水平板26は、シュート4に対して平行な方向に延びている。また、中心横板25を挟んで中心横板25の後方側には、後部縦板24が配置されている。このような複数の補強板によって傾斜板18を支持するように適宜構成されており、複数の補強板の下面は開放されている。また、前部縦板23、後部縦板24、中心横板25はシュート4に対して垂直に配置されていても良い。
 また、中心横板25にはシリンダ装置20のロッドやガイドロッド21の先端部が取付けられる。
 また、図8Bは図7のB-B線矢視図であり、ローラ装置19が取付けられる位置の構造を示している。この例では、前部縦板23の間に固定される水平板26にローラ装置19が取付けられるようになっている。
8A and 8B show an example of the structure of the support frame 17.
FIG. 8A is a view taken along the line AA in FIG. 7 and shows the structure of the both ends of the support frame 17 and the four internal parts.
As shown in FIGS. 8A and 8B, the support frame body 17 has a plurality of reinforcing plates arranged vertically and horizontally and horizontally. In the present embodiment, the plurality of reinforcing plates include a front vertical plate (vertical reinforcing plate) 23, a central horizontal plate (lateral reinforcing plate) 25, and a horizontal plate (parallel reinforcing plate) 26.
The front vertical plate 23 extends to the front side of the inclined plate 18 along the flow direction of the sintering raw material 1. The central horizontal plate 25 extends in the width direction of the chute 4 and the inclined plate 18. The horizontal plate 26 extends in a direction parallel to the chute 4. Further, a rear vertical plate 24 is disposed on the rear side of the central horizontal plate 25 with the central horizontal plate 25 interposed therebetween. The inclined plate 18 is appropriately configured to be supported by such a plurality of reinforcing plates, and the lower surfaces of the plurality of reinforcing plates are open. Further, the front vertical plate 23, the rear vertical plate 24, and the central horizontal plate 25 may be arranged perpendicular to the chute 4.
Further, a rod of the cylinder device 20 and a tip end portion of the guide rod 21 are attached to the central horizontal plate 25.
FIG. 8B is a view taken along the line BB in FIG. 7 and shows the structure of the position where the roller device 19 is attached. In this example, the roller device 19 is attached to a horizontal plate 26 fixed between the front vertical plates 23.
 このような構造のため、スクレパー工具16の内側(後方)には、上方が傾斜板18によって区画され、横方向が前部縦板26によって区画される空間28が形成される。
 本実施形態では、各空間28の横のつながりを確保するため、前部縦板23の前端には、斜めの切り欠き27が形成される。この切り欠き27により、図4に示されるように、両端部及び内部に配置される前部縦板23の前端と、スクレパー工具16の裏面との間に、隙間29が形成される。この隙間29により、スクレパー工具16の後方に、シュート4の幅方向に連続し、かつ、スクレパー15の外部に連通する空間が形成される。
Due to such a structure, a space 28 is formed on the inner side (rear side) of the scraper tool 16 with the upper side defined by the inclined plate 18 and the lateral direction defined by the front vertical plate 26.
In the present embodiment, an oblique cutout 27 is formed at the front end of the front vertical plate 23 in order to secure a horizontal connection between the spaces 28. As shown in FIG. 4, the notch 27 forms a gap 29 between both ends and the front end of the front vertical plate 23 disposed inside and the back surface of the scraper tool 16. By this gap 29, a space is formed behind the scraper tool 16 in the width direction of the chute 4 and communicated with the outside of the scraper 15.
 支持枠体17の前部縦板23は、ローラ装置19によってシュート4のすべり面と支持枠体17の下端部との間に高さbの間隔31が形成されるように支持されている。その際、この高さbを、図4に示すように、スクレパー工具16の下端とシュート4のすべり面との間に形成される間隔30の高さaよりも大きくなるように設定する。 The front vertical plate 23 of the support frame 17 is supported by the roller device 19 so that a gap 31 having a height b is formed between the sliding surface of the chute 4 and the lower end of the support frame 17. At this time, the height b is set to be larger than the height a of the interval 30 formed between the lower end of the scraper tool 16 and the sliding surface of the chute 4 as shown in FIG.
 以上のように、スクレパー15において、スクレパー工具16の下端部とシュート4のすべり面との間に間隔30が形成され、かつ、スクレパー工具16の裏側にも空間28が形成されている。この構成により、スクレパー15の移動によってシュート4に付着した焼結原料の除去を行う際、必然的に一部の原料が、スクレパー工具16の裏側(内部側)の空間28に入り込む。また、スクレパー15が、シュート4の先端まで前進した後、戻り工程の際にも、スクレパー工具16の裏側の角部によって、残された原料を掻き取りながら後退する。 As described above, in the scraper 15, the interval 30 is formed between the lower end portion of the scraper tool 16 and the sliding surface of the chute 4, and a space 28 is also formed on the back side of the scraper tool 16. With this configuration, when removing the sintered raw material adhering to the chute 4 due to the movement of the scraper 15, a part of the raw material inevitably enters the space 28 on the back side (inside side) of the scraper tool 16. In addition, after the scraper 15 has advanced to the tip of the chute 4, the scraper 15 is moved backward while scraping off the remaining raw material by the corner on the back side of the scraper tool 16 during the return process.
 このため、スクレパー15の動作回数が増すに連れて、支持枠体17の内部は焼結原料1によって満たされることになる。焼結原料1が支持枠体17内から排出されないとすると、完全に焼結原料1によって満たされた後には、スクレパー15が浮き上がるようになる。そうなると、スクレパー15はガイドレール35によって拘束されているので、以後、スクレパー15の移動が困難になり、掻き取り動作が充分に行えなくなる。 Therefore, as the number of operations of the scraper 15 increases, the inside of the support frame 17 is filled with the sintered raw material 1. If the sintered raw material 1 is not discharged from the support frame 17, the scraper 15 comes to float after being completely filled with the sintered raw material 1. In this case, since the scraper 15 is restrained by the guide rail 35, it becomes difficult to move the scraper 15 and the scraping operation cannot be performed sufficiently.
 このような問題に対して、本実施形態では、スクレパー工具16の内側にシュート4の幅方向に連続し、スクレパー15の外部に連なる空間28を形成するとともに、シュート4のすべり面と縦板の下端部との間の間隔bを、スクレパー工具16の下端部との間の間隔aよりも大きく形成した。 In this embodiment, in this embodiment, a space 28 is formed inside the scraper tool 16 in the width direction of the chute 4 and continues to the outside of the scraper 15, and the sliding surface of the chute 4 and the vertical plate are formed. The distance b between the lower end portion and the lower end portion of the scraper tool 16 was formed larger than the distance a.
 この構成により、スクレパー15の動作によって順次焼結原料1が内部の空間28に蓄積される。焼結原料1がある程度たまり、その重量が増してくると、新たにスクレパー工具16の内側に入り込んだ焼結原料1は、スクレパー工具16の内側に沿って移動する。そして、前部縦板23の前端の切り欠き27によって形成された隙間29および、前部縦板23とシュート4表面の間の隙間31を通してスクレパー15の外部に排出される。その際、前記切り欠き27の端部は傾斜して前部縦板23の下の隙間につながっているので、焼結原料1は円滑に流れることができる。
 このため、支持枠体17の内部が焼結原料1によって満たされることがなく、スクレパー15の移動は円滑に行われる。
With this configuration, the sintering raw material 1 is sequentially accumulated in the internal space 28 by the operation of the scraper 15. When the sintered raw material 1 accumulates to some extent and its weight increases, the sintered raw material 1 that newly enters the inside of the scraper tool 16 moves along the inside of the scraper tool 16. And it is discharged | emitted outside the scraper 15 through the clearance gap 29 formed by the notch 27 of the front end of the front vertical board 23, and the clearance gap 31 between the front vertical board 23 and the chute | shoot 4 surface. At that time, since the end of the notch 27 is inclined and connected to the gap below the front vertical plate 23, the sintering raw material 1 can flow smoothly.
For this reason, the inside of the support frame 17 is not filled with the sintering raw material 1, and the scraper 15 moves smoothly.
 以上説明した本実施形態の装入装置の効果を確認するために、焼結原料の装入にあたり、スクレパーを用いて、定期的に、セラミックタイルでライニングした幅350cmのシュート上に付着した焼結原料の掻き落しを実施した。
 本実施形態の装置では、スクレパー工具の下端とシュートの上面との間に2mmの間隔を、縦板(前部縦板及び後部縦板)の下端とシュートの上面との間に6mmの間隔をそれぞれ設けた。また、スクレパー工具の内側にも、支持枠体の内部に配置される縦板及び両側に配置される側板のそれぞれの前端部を斜めに切り欠いて連続する空間を形成した。
 その結果、操業にともなってスクレパーの内部(後方)に焼結原料がある程度は蓄積したが、内部が原料によって満たされるまでには至らず、問題なく操業が継続できた。
 これに対し、比較例としてスクレパー工具の下端とシュートの上面との間の間隔及び前部縦板23の下端とシュート上面との間の間隔をともに2mmとするとともに、前部縦板の前端に切り欠きを形成せずにスクレパー工具の裏側にシュートの幅方向に連続する空間を形成しないようにしたスクレパーを用いた。この場合には、操業後60日でスクレパー内部が原料によって満たされて、詰まりが発生し、スクレパーの移動が困難になった。
In order to confirm the effect of the charging apparatus according to the present embodiment described above, a sintered material adhered on a 350 cm wide chute lined with ceramic tiles periodically using a scraper when charging a sintering raw material. Raw materials were scraped off.
In the apparatus of this embodiment, a gap of 2 mm is provided between the lower end of the scraper tool and the upper surface of the chute, and a gap of 6 mm is provided between the lower end of the vertical plates (front vertical plate and rear vertical plate) and the upper surface of the chute. Each was provided. Also, a continuous space was formed on the inside of the scraper tool by diagonally notching the front end portions of the vertical plate arranged inside the support frame and the side plates arranged on both sides.
As a result, the sintering raw material accumulated to some extent inside the scraper (backward) with the operation, but the inside was not filled with the raw material, and the operation could be continued without any problems.
On the other hand, as a comparative example, the distance between the lower end of the scraper tool and the upper surface of the chute and the distance between the lower end of the front vertical plate 23 and the upper surface of the chute are both 2 mm, and at the front end of the front vertical plate. A scraper that does not form a notch and does not form a continuous space in the width direction of the chute on the back side of the scraper tool was used. In this case, the scraper was filled with the raw material 60 days after the operation, and clogging occurred, making it difficult to move the scraper.
 本発明によれば、掻き残した焼結原料によるスクレパーの浮き上がりの問題が発生せずに、安定した状態で焼結の操業ができるので、本発明を実施したことにより大きな産業上の効果が期待できる。 According to the present invention, since there is no problem of lifting of the scraper due to the sintered raw material left behind, sintering can be performed in a stable state. Therefore, the present invention is expected to have a large industrial effect. it can.
 1  焼結原料
 2  原料ホッパー
 3  ドラムフィーダー
 4  シュート4
 5  分級装置
 6  ふるい棒
 7  パレット
 8  原料層
 9  セラミックタイル
 10  レール
 11  支持台車
 12  傾動架台
 13  軸体
 14  駆動シリンダ装置
 15  スクレパー(全体)
 16  スクレパー工具
 17  支持枠体
 18  傾斜板
 19  ローラ装置
 20  シリンダ装置
 21  ガイドロッド
 22  ベース部材
 23  前部縦板
 24  後部縦板
 25  中心横板
 26  水平板
 27  切り欠き
 28  空間
 29  隙間
 30  間隔
 31  間隔
 32  ふるい棒駆動装置
 33  ブラケット
 34  ガイドローラ
 35  ガイドレール
 112  タイル基板
 114  シュート本体
 a  間隔30の高さ
 b  間隔31の高さ
 d1  上向きの段差
 d2  下向きの段差
1 Sintering raw material 2 Raw material hopper 3 Drum feeder 4 Chute 4
5 Classification device 6 Sieve rod 7 Pallet 8 Raw material layer 9 Ceramic tile 10 Rail 11 Supporting carriage 12 Tilt mount 13 Shaft body 14 Drive cylinder device 15 Scraper (whole)
16 scraper tool 17 support frame 18 inclined plate 19 roller device 20 cylinder device 21 guide rod 22 base member 23 front vertical plate 24 rear vertical plate 25 central horizontal plate 26 horizontal plate 27 notch 28 space 29 gap 30 interval 31 interval 32 Sieve rod drive device 33 Bracket 34 Guide roller 35 Guide rail 112 Tile substrate 114 Chute body a Height of interval 30 b Height of interval 31 d1 Upward step d2 Downward step

Claims (9)

  1.  焼結原料をパレット上へ装入させるシュートと;
     前記シュート上を往復移動して、かつ、前記シュート上に堆積した前記焼結原料を前記シュートから除去するスクレパーと;
    を備え、
     前記スクレパーが、前記シュートの上面に対して傾斜して設けられた傾斜板と、前記傾斜板の下面側の前端に取付けられたスクレパー工具と、前記傾斜板を支持する支持枠体と、前記支持枠体に取付けられ、かつ、前記傾斜板及び前記支持枠体を前記シュートの前記上面上において走行させるローラ装置とを有しており;
     前記シュートの幅寸法が前記傾斜板の幅寸法と少なくとも実質的に同一である;
    ことを特徴とする焼結原料の装入装置。
    A chute for charging the sintering material onto the pallet;
    A scraper that reciprocates on the chute and removes the sintered material deposited on the chute from the chute;
    With
    The scraper is inclined with respect to the upper surface of the chute, a scraper tool attached to the front end on the lower surface side of the inclined plate, a support frame that supports the inclined plate, and the support A roller device attached to the frame and moving the inclined plate and the support frame on the upper surface of the chute;
    The width dimension of the chute is at least substantially the same as the width dimension of the inclined plate;
    An apparatus for charging a sintered material, characterized in that.
  2.  前記スクレパー工具の後方に、前記シュートの幅方向に連続し、かつ、前記スクレパーの外部に連通する空間が形成されていることを特徴とする請求項1に記載の焼結原料の装入装置。 The apparatus for charging a sintered material according to claim 1, wherein a space is formed behind the scraper tool so as to be continuous in the width direction of the chute and communicate with the outside of the scraper.
  3.  前記支持枠体が、前記傾斜板の前方側まで延びる縦補強板と、前記傾斜板の幅方向に延びる横補強板と、前記シュートに対して平行な方向に延びる平行補強板とを有し;
     前記縦補強板の先端に斜めの切り欠き部が形成されることによって、前記空間が形成される;
    ことを特徴とする請求項2に記載の焼結原料の装入装置。
    The support frame includes a vertical reinforcing plate extending to the front side of the inclined plate, a lateral reinforcing plate extending in the width direction of the inclined plate, and a parallel reinforcing plate extending in a direction parallel to the chute;
    The space is formed by forming an oblique cutout at the tip of the vertical reinforcing plate;
    The apparatus for charging a sintering raw material according to claim 2.
  4.  前記スクレパー工具及び前記支持枠体が、前記シュートの上面から間隔をおいて前記ローラ装置によって支持され;
     前記シュートの前記上面と前記支持枠体の下端部との間の間隔は、前記シュートの前記上面と前記スクレパー工具の下端部との間の間隔よりも大きい;
    ことを特徴とする請求項1に記載の焼結原料の装入装置。
    The scraper tool and the support frame are supported by the roller device spaced from the upper surface of the chute;
    The distance between the upper surface of the chute and the lower end of the support frame is greater than the distance between the upper surface of the chute and the lower end of the scraper tool;
    The apparatus for charging a sintered raw material according to claim 1.
  5.  前記スクレパー工具が前記シュートの前端に達したとき、前記傾斜板が、前記焼結原料の落下位置をカバーする長さであることを特徴とする請求項1に記載の焼結原料の装入装置。 2. The apparatus for charging a sintered material according to claim 1, wherein when the scraper tool reaches the front end of the chute, the inclined plate has a length that covers a position where the sintered material is dropped. .
  6.  前記シュートが、基板と、前記基板の表面に配置された複数のセラミックタイルとを備えることを特徴とする請求項1に記載の焼結原料の装入装置。 2. The apparatus for charging a sintered material according to claim 1, wherein the chute comprises a substrate and a plurality of ceramic tiles arranged on the surface of the substrate.
  7.  前記焼結原料の流れ方向から見て、前記複数のセラミックタイルのうちの一つである第1のセラミックタイルと、前記第1のセラミックタイルの下流側に隣接する第2のセラミックタイルとの位置関係は、面一である、あるいは、前記第1のセラミックタイルが前記第2のセラミックタイルに対して突出していることを特徴とする請求項6に記載の焼結原料の装入装置。 Positions of a first ceramic tile that is one of the plurality of ceramic tiles and a second ceramic tile adjacent to the downstream side of the first ceramic tile as viewed from the flow direction of the sintering raw material The charging apparatus according to claim 6, wherein the relationship is the same, or the first ceramic tile protrudes from the second ceramic tile.
  8.  前記セラミックタイルの角部に曲面が形成され;
     前記曲面が形成された前記セラミックタイルの表面を接着面として前記基板に接着されていることを特徴とする請求項6に記載の焼結原料の装入装置。
    Curved surfaces are formed at corners of the ceramic tile;
    The apparatus for charging a sintering material according to claim 6, wherein the ceramic tile having the curved surface is adhered to the substrate with the surface of the ceramic tile as an adhesive surface.
  9.  前記セラミックタイルが、前記基板上の前記焼結原料の落下地点を中心として部分的に設けられていることを特徴とする請求項6に記載の焼結原料の装入装置。 The apparatus for charging a sintered material according to claim 6, wherein the ceramic tile is partially provided centering on a dropping point of the sintered material on the substrate.
PCT/JP2011/055494 2010-03-12 2011-03-09 Apparatus for charging raw material in sintering machine WO2011111735A1 (en)

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BR112012022663-0A BR112012022663B1 (en) 2010-03-12 2011-03-09 APPARATUS FOR LOADING RAW MATERIAL IN SINTERING MACHINE
KR1020127023446A KR101460870B1 (en) 2010-03-12 2011-03-09 Apparatus for charging raw material in sintering machine
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EP3489371A1 (en) * 2017-11-24 2019-05-29 Tata Steel IJmuiden B.V. Scraper device
WO2024103102A1 (en) * 2022-11-14 2024-05-23 Biochill Pty Limited Insulating liner

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