JP2014088597A - Sintering simulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reproduce a sintering process of manufacturing sintered ore.SOLUTION: A sintering simulator comprises a hoist system hoisting a drum feeder to a vertical direction, a move system moving a charge chute horizontally, and an angular adjustment system adjusting a horizontal angle of the charge chute. A bottom wall part of an angular ladle is provided with a slit to conduct heat in sintering, and both ends of the bottom wall part of the angular ladle are provided with a twin side wall parts standing up above from both ends. A window unit to look into the inside of the angular ladle is installed to at least one wide wall, and a twin shutter walls closing down between the side walls and being put on and taken off freely is provided between the side wall parts. The tip side of the shutter wall is an acute angle.

Description

  The present invention relates to a sintering simulator that can simulate a sintering process of a sintering machine that manufactures sintered ore that is a raw material for a blast furnace, for example.

Conventionally, sintered ore has been used as a raw material for a blast furnace, and there are those shown in Patent Documents 1 and 2 for testing the charged state and the combustion state of the sintered ore.
Patent Document 1 is a test apparatus composed of a hopper, a roll feeder, a chute, a carriage equipped with a pan, and the like, and is configured to be able to adjust the height, rotation speed, and chute angle of the roll feeder, and the roll feeder and chute. The relative position of can be changed.

In Patent Document 2, a refractory cylinder loaded with a raw material for sintering test is placed on a pallet before charging a raw material blended in an actual sintering machine, and the raw material in the cylinder is ignited and sintered along with the movement of the pallet. The sample is extracted at an arbitrary position and a sintering test is performed.
In addition, there are those disclosed in Patent Documents 3 to 6 as techniques for disclosing a container or the like for containing a sintering raw material.

JP 59-13034 A JP 58-181826 A JP-A-63-247317 JP 2010-047801 A JP 54-068893 A Japanese Patent Laid-Open No. 05-140657

  In Patent Document 1, a raw material for sintering is placed in a sintering pot (container) for testing. However, since the sintering pot is a box having four side walls, the raw material is used as a sintering pot. When inserted, the raw material flow stops at the side wall of the sintering pot. Therefore, the particle size distribution of the raw material according to the test of Patent Document 1 deviates from the particle size distribution of the raw material when actually performed with a sintering machine. Moreover, the state of the packed bed when the raw material is filled in the sintering pan may be significantly different from the packed bed in the actual machine, and it is difficult to perform a sintering test that reproduces the sintering process in the actual machine. Moreover, in the test of patent document 1, since a filled layer cannot be confirmed in a sintering pan, it is difficult to determine the quality of sinterability.

  In Patent Document 2, although the state when the raw material is sintered can be known, since the charged state when the raw material is charged into the sintering machine cannot be reproduced, a test corresponding to the actual operation is performed. The fact is that you can't. In addition, as shown in Patent Documents 3 to 6, although containers for putting sintering raw materials are disclosed, even if these containers are used, the sintering process for producing sintered ore cannot be accurately reproduced. Is the actual situation.

  Accordingly, an object of the present invention is to provide a sintering simulator capable of accurately reproducing a sintering process for producing sintered ore in a laboratory or the like.

In order to achieve the above object, the present invention has taken the following measures.
That is, the sintering simulator of the present invention includes a hopper for inserting a raw material to be sintered, a drum feeder for cutting out the raw material stored in the hopper, and a device for receiving the raw material cut out by the drum feeder and discharging it to the outside. An elevating mechanism that includes an input chute, a pallet cart in which the raw material discharged from the charging chute is charged, and a square pan that receives the raw material in the pallet cart, and moves the drum feeder vertically. A moving mechanism for moving the charging chute in the horizontal direction; and an angle adjusting mechanism for adjusting the horizontal angle of the charging chute, and performing sintering on the bottom wall of the square pan. Sometimes a slit part through which heat is passed is provided, and at both ends of the bottom wall part of the square pan, a pair of side wall parts standing upward from the both end parts are provided, and at least one of the side wall parts, A window for viewing the inside of the pan is provided, and a pair of shutter walls are provided between the side wall portions so as to be detachable from above, and the front end side of the shutter wall has an acute angle. It is characterized by being.

  According to the sintering simulator of the present invention, a sintering process for producing sintered ore can be accurately reproduced in a laboratory or the like.

It is explanatory drawing for demonstrating a sintering test. It is a general view of a sintering simulator. It is detail drawing which shows the detail of the raising / lowering mechanism etc. around a hopper. It is detail drawing which shows the details, such as a moving mechanism around an insertion chute, and an angle adjustment mechanism. It is a perspective view of a square pan and a pallet truck. It is detail drawing of each member in a square pan. It is explanatory drawing explaining a shutter groove | channel. It is a figure which shows the state which put the raw material and the square pan in the pallet cart. An example of an experimental result using a sintering simulator and an operation result when an actual operation is performed is shown. It is the figure which showed the conventional method and the method of this invention in evaluating the combustion state of a packed bed.

The sintering simulator of the present invention will be described with reference to the drawings.
In a sinter factory that produces sintered ore to be put into a blast furnace, for example, iron ore, limestone, and coke powder are mixed, mixed with a drum mixer, and moisture is adjusted to 7.0% to 7.5%. As a raw material for sintering, a sintered ore is manufactured by charging into a sintering machine through a charging device. In the sintering machine, coke powder is supplied to the surface of the sintering raw material (filled layer) filled to a certain layer thickness and ignited, and the coke powder is burned while the sintering raw material and coke are conveyed on the sintering machine. Let During the conveyance of the sintering raw material and coke, the combustion of the coke powder proceeds in sequence, and the combustion of the coke powder ends when it reaches the discharge side of the sintering machine. In addition, when sintering a sintering raw material in a sintering machine, it attracts | sucks with the blower from the lower side of the said sintering machine.

  The combustion behavior of coke powder is greatly affected by the air permeability of the packed bed and the carbon concentration distribution in the raw material. The air permeability mainly depends on the raw material particle size, water content, raw material charging state (raw material charging state), and carbon concentration distribution. It is important to properly manage the raw material charging state. That is, the particle size and the carbon concentration distribution in the high direction of the packed bed vary greatly depending on the charged state of the raw material.

  Now, in an actual sintering machine, the charging state of the raw material is not constant, and this changes the combustion behavior of the coke powder, so the production of sintered ore (operation management at the sintering plant) is The reality is difficult. For this reason, in the past, in order to reproduce the charged state of the raw material in the sintering machine, a simulated packed bed was created in a laboratory, etc., and the influence of this packed bed state on sintering was affected. Although I was investigating, the packed bed created in the laboratory was different from the packed bed in the actual sintering machine, and it was not possible to apply it in the actual machine.

Therefore, in the sintering simulator of the present invention, it is possible to reproduce the packed bed when the operation is actually performed with a sintering machine in the laboratory, and to sinter to break the packed bed.
Hereinafter, the sintering simulator will be described in detail.
As shown in FIG. 1, a sintering test in a laboratory or the like is performed by mixing and granulating a predetermined raw material 1 with a drum mixer 2, and charging the raw material into a sintering simulator 3. A packed bed is formed, and the square pan 37 in which the packed bed is charged is taken out from the sintering simulator 3 and sintered while being sucked by the blower 5.

  As shown in FIG. 1, the sintering simulator 3 includes a hopper 31 into which raw materials mixed and granulated in the drum mixer 2 are charged, a drum feeder 33 that cuts out raw materials stored (stored) in the hopper 31; A charging chute 34 that once receives the raw material cut out by the drum feeder 33 and discharges it to the outside, a pallet truck 36 in which the raw material discharged from the charging chute 34 is charged, and the raw material charged in the pallet truck 36 A square pan 37 that forms a packed bed by receiving the metal is provided.

A drum feeder 33 is disposed below the hopper 31, a charging chute 34 is disposed below the drum feeder 33, and a pallet carriage 36 is disposed below the charging chute 34. A square pan 37 can be placed inside the pallet carriage 36.
As shown in FIG. 2, the hopper 31 is configured by a rectangular parallelepiped having an upper portion and a lower portion opened, and the hopper 31 has an upper and a lower opening portion directed in a vertical direction via an elevating mechanism 32. It is attached to the fixed frame 321.

  As shown in FIGS. 2 and 3, the elevating mechanism 32 raises two gantry 323 upwards from the fixed frame 321 on both sides of the hopper 31, and elevates a lifting member (for example, screw jack screw) 324 on the gantry 323. The lifting / lowering member 324 is freely attached, and a lifting / lowering frame 325 that moves up and down as the lifting / lowering member 324 moves up and down is attached. The gantry 323 is provided with an operation member (for example, an operation handle) 322 for performing an elevating operation, and the hopper 31 is attached to the elevating frame 325.

  When the operation handle 322 is rotated, the screw jack screw 324 rotates and the screw jack screw 324 moves up and down, so that the hopper 31 moves in the vertical direction (up and down direction) according to the operation of the operation handle 322. As the hopper 31 moves up and down, the drum feeder 33 attached to the lower part of the hopper 31 also moves in the vertical direction.

  As shown in FIG. 2, the drum feeder 33 is formed by providing a rotatable inner cylinder 332 inside a cylindrical outer cylinder 331 that forms the outside. The outer cylinder 331 and the inner cylinder 332 are provided. In the cylindrical portion, a supply port for supplying the raw material from the hopper 31 and a discharge port for discharging the supplied raw material toward the charging chute 34 are formed. The drum feeder 33 is attached to the lower portion of the hopper 31 with the axis center in the horizontal direction, and an electric motor that adjusts the rotational speed of the inner cylinder 332 is connected thereto.

  The charging chute 34 is a relay chute for continuously guiding the raw material cut out from the drum feeder 33 to the pallet carriage 36. The charging chute 34 has a bottomed shape and a charging chute main body 341 formed in a box shape with an open top, an angle adjusting mechanism 35 that adjusts the horizontal angle of the charging chute main body 341, And a moving mechanism 342 for moving the incoming chute main body 341 in the horizontal direction.

  Specifically, as shown in FIGS. 2 and 4, the moving mechanism 342 is provided with a horizontal moving frame 343 that moves along the horizontal frame 3251 in the horizontal frame 3251 installed at the lower part of the elevating frame 325, and The frame 3251 is provided with rotatable sprockets 344 and 344, the chain 345 is spanned between the sprockets 344 and 344, and a part (midway part) of the chain 345 is connected to the horizontally moving frame 343. . An operation member (for example, an operation handle) 346 that moves the horizontal movement frame 343, that is, rotates the sprocket 344 (chain 345) is attached to the moving mechanism 342.

When the operation handle 346 is rotated, the sprocket 344 and the chain 345 are rotated, and the horizontal movement frame 343 can be moved in the horizontal direction as the operation handle 346 is operated.
The angle adjustment mechanism 35 arranges a turnbuckle telescopic rod 351 between the upper end of the charging chute main body 341 and the horizontal movement frame 343, and pivotally supports the lower end of the expansion rod 351 on the horizontal movement frame 343. The upper end of the telescopic rod 351 and the left end (one end) of the charging chute main body 341 are pivotally supported, and the right end (the other end) of the charging chute main body 341 is further pivotally supported by the horizontal movement frame 343. . An operation member (for example, an operation handle) 352 for expanding and contracting the telescopic rod 351 is attached to the telescopic rod 351.

When the operation handle 352 is rotated, the telescopic rod 351 expands and contracts, and the left side of the charging chute 34 moves up and down with the right side of the charging chute main body 341 as a pivot point, so that the charging chute main body 341 is inclined and tilted. Can be adjusted.
As shown in FIGS. 2 and 5, the pallet carriage 36 is formed in a box shape (a rectangular parallelepiped) having an open upper portion, and can be charged with a square pan 37 and raw materials in the upper open portion. It is like that. A wire 38 is connected to the right side (one end) of the pallet carriage 36, and a winder 39 that winds the wire 38 is provided. Further, wheels are provided at the lower part of the pallet carriage 36, and the pallet carriage 36 can be moved to the outside of the fixed frame 321 by winding the wire 38 with a winder 39.

Specifically, the pallet carriage 36 includes a plate-like bottom wall portion 361 on which wheels are mounted, and a plate-like side wall portion 362 that rises upward from each of the four sides of the bottom wall portion 361. Each of the plate-like side wall portions 362 is orthogonal to the plate-like bottom wall portion 361, and the opposing corner side wall portions 362 are parallel to each other.
Next, the corner pan 37 will be described with reference to FIG.

  As shown in FIG. 5, the square pan 37 collects a sample for a sintering test by receiving the raw material put in the pallet carriage 36 in the pallet carriage 36, and includes a bottom wall portion 371 and a bottom wall portion 371. And a pair of side wall portions 372 and 372 that rise upward from both ends in the width direction. For convenience of explanation, the left side wall portion in FIG. 5 is referred to as a first side wall portion 372a, and the right side wall portion in FIG. 5 is referred to as a second side wall portion 372b.

Of the first side wall part 372a and the second side wall part 372b constituting the side wall of the corner pot 37, at least one side wall part (for example, the first side wall part 372a) has a window for viewing the inside of the corner pot 37. A portion 373 is provided. In addition, you may provide the window part 373 in both the 1st side wall part 372a and the 2nd side wall part 372b.
The square pan 37 is disposed between the first side wall 372a and the second side wall 372b, and a pair of shutter walls 374 that closes between the first side wall 372a and the second side wall 372b. , 374 are provided. For convenience of explanation, the front shutter wall in FIG. 5 is referred to as a first shutter wall 374a, and the rear shutter wall 374 in FIG. 5 is referred to as a second shutter wall 374b.

The first shutter wall 374a and the second shutter wall 374b are detachably attached to the first side wall 372a and the second side wall 372b, respectively. Therefore, when the first shutter wall 374a and the second shutter wall 374b are attached to the first side wall portion 372a and the second side wall portion 372b, the whole of the square pan 37 is formed in a box shape with the top opened. .
On the other hand, in a state in which the first shutter wall 374a and the second shutter wall 374b are removed, the corner pan 37 is substantially U-shaped when viewed from the front, and the upper and depth directions are open.

Next, the bottom wall portion 371, the first side wall portion 372a, the second side wall portion 372b, the first shutter wall 374a, and the second shutter wall 374b will be described in detail with reference to FIG. In the description of each pan 37, for convenience of explanation, the left and right direction of the paper surface of FIGS. 6B and 6C is the left and right direction or the width direction, and the direction orthogonal to the width direction is the front and rear direction or the depth direction.
As shown in FIG. 6B, the bottom wall portion 371 includes a slit plate member 371a having a slit portion having air permeability, and a plate-like placement plate 371b on which the slit plate member 371a is placed.

The slit plate material 371a is configured by arranging a plurality of bars in the width direction or the depth direction at predetermined intervals and connecting the bars. In addition, the space | interval (space | gap) of a bar is made into the slit part. In addition, you may form the slit board material 371a and a slit part (through-hole) by providing the slit-shaped through-hole penetrated in a thickness direction in a plate-shaped member (plate member).
In this embodiment, the space | interval (gap) of the slit part in the slit board material 371a is 0.4 mm. By setting the interval between the slit portions to 0.4 mm, a raw material having a particle size distribution of 0 to 10 mm is difficult to fall, and the slit portions are prevented from being closed by the raw material. The slit portion of the slit plate material 371a is as described above if it has air permeability so that a combustion test (sintering test) can be performed on the packed bed formed in the square pan 37 as described later. It is not limited.

The mounting plate 371b is formed in a frame shape so that the outer peripheral edge of the slit plate material 371a can be fitted therein. The bottom wall portion 371 is configured by fitting the slit plate material 371a into the mounting plate 371b.
The first side wall part 372a connects the lower part of the window frame body 372a1 to the edge part (for example, the left edge part) in the width direction of the mounting plate 371b, and raises the window frame body 372a1 from the mounting plate 371b. In addition, a plate-shaped and transparent glass plate 372a2 is mounted inside the upright window frame 372a1. In other words, the window portion 373 of the first side wall portion 372a is configured by fitting the glass plate 372a2 into the window frame body 372a1.

  In this embodiment, a steel spacer 3771 is placed inside the window frame 372a1, a transparent and heat-resistant glass plate 372a2 of about 1200 ° C. is fitted into the window frame 372a1 via the spacer 3771, and further, the glass plate 372a2. Is pressed by a steel attachment member 3772 from the inside, and the attachment member 3772 is fixed to the window frame body 372a1 via a bolt 3773 or the like to constitute the window portion 373.

  As shown in FIG. 5, FIG. 6C and FIG. 7, the first shutter wall 374a or the second shutter wall 374a or the second shutter wall 374a is provided at both end portions in the depth direction (referred to as front and rear end portions) of the first side wall portion 372a (window frame body 372a1). A shutter groove 375a for passing the shutter wall 374b is formed. The shutter groove 375a includes a substantially L-shaped L-shaped metal fitting 375a1 projecting outward in the depth direction from both front and rear end portions of the first side wall portion 372a and projecting inward in the width direction at the middle portion, and both front and rear ends of the first side wall portion 372a. It is comprised by providing in a part up and down.

  Looking at the L-shaped metal fittings 375a1 provided at the front and rear ends of the first side wall 372a, the L-shaped metal fittings 375a1 are formed with cutout portions 375a2 that are notched at a predetermined interval. The through holes are used to move the raw material outward. In this way, the material in the square pan 37 naturally moves outward through the through hole 375a2, so that the first shutter wall 374a or the second shutter wall 374b is formed in the shutter groove 375a as will be described later. It is possible to reduce the insertion trouble due to the raw material when inserting.

The second side wall portion 372b connects the lower part of a plate-like member (plate member) to the widthwise edge portion (for example, the right edge portion) of the mounting plate 371b, and the plate member (second side wall portion 372b) is connected. The first side wall portion 372a (window frame body 372a1, glass plate 372a2) is configured to face each other in parallel.
Similarly to the first side wall 372a, shutter grooves 375b for allowing the first shutter wall 374a or the second shutter wall 374b to pass therethrough are formed at both front and rear ends of the second side wall 372b. The shutter groove 375b is provided with substantially L-shaped metal fittings 375b1 which protrude outward in the depth direction from both front and rear end portions of the first side wall portion 372b and protrude inward in the width direction in the middle portion, and are provided vertically at both front and rear end portions. It is comprised by.

The L-shaped bracket 375b1 also has a through hole (notch) 375b2 for moving the raw material to the outside, and the raw material is inserted when the first shutter wall 374a or the second shutter wall 374b is inserted into the shutter groove 375b. Insertion failure due to is reduced.
A plurality of reinforcing members 3774 made of a round bar or the like are provided on the surface side of the second side wall 372b, and the upper end of the first side wall 372a (window frame body 372a1) and the second side wall 372b (plate) The upper ends of the members are connected to each other by a connecting material (for example, a round bar) 3775. Due to these reinforcements, even if the corner pan 37 is exposed to a high temperature, it is difficult to be deformed.

  As shown in FIGS. 6A and 7, the first shutter wall 374a and the second shutter wall 374b are configured by plate members. In the first shutter wall 374a and the second shutter wall 374b, the insertion side (front end) has a sharp tapered shape as compared with other portions. In other words, the first shutter wall 374a and the second shutter wall 374b have a shape in which the thickness gradually decreases as the short sides (sides in the thickness direction) go down (the first shutter wall 374a and the first shutter wall 374a). 2) The insertion side of the shutter wall 374b has an acute angle. In this embodiment, the angle of the insertion-side tips of the first shutter wall 374a and the second shutter wall 374b is an acute angle of 45 degrees with respect to the vertical direction, and the tips of the first shutter wall 374a and the second shutter wall 374b. It is a part, Comprising: The outer side (outer surface side) of the front-end | tip part is an inclined surface.

  When mounting the first shutter wall 374a, first, the insertion side of the first shutter wall 374a is faced down, and both width direction end portions (left and right end portions) of the first shutter wall 374a are, for example, the first shutter wall. The shutter groove 375a provided on the front side of 374a and the shutter groove 375b provided on the front side of the second side wall portion 372b are inserted substantially simultaneously from above. The first shutter wall 374a can be mounted by moving the inserted first shutter wall 374a while pushing it downward.

  When mounting the second shutter wall 374b, as in the case of the first shutter wall 374a described above, first, the insertion side of the second shutter wall 374b is directed downward, and both ends in the width direction of the second shutter wall 374b. Are inserted into the shutter groove 375a provided on the back side of the first side wall part 372a and the shutter groove 375b provided on the back side of the second side wall part 372b from above substantially simultaneously, for example. . The second shutter wall 374b can be mounted by moving the inserted second shutter wall 374b downward.

  As described above, the sintering simulator 1 includes the hopper 31 into which the raw material to be sintered is inserted, the drum feeder 33 that cuts out the raw material stored (stored) in the hopper 31, and the raw material cut out by the drum feeder 33. A charging chute 34 that receives and discharges to the outside, a pallet truck 36 that receives the raw material discharged from the charging chute 34, and a corner that forms a packed bed by receiving the raw material charged into the pallet truck 36. The drum feeder 33 can be moved (lifted) in the vertical direction by the elevating mechanism 32, the charging chute 34 can be moved in the horizontal direction by the moving mechanism 342, and the horizontal angle can be adjusted by the angle adjusting function. Therefore, the charging state of the raw material charged into the pallet carriage 36 can be freely changed.

  For example, the falling distance of the raw material can be made constant by moving the drum feeder 33 in the vertical direction by the lifting mechanism 32. Further, the distance and speed at which the raw material passes through the slope of the charging chute by changing the horizontal angle of the charging chute 34 by the angle adjusting function and changing the horizontal position movement of the charging chute 34 by the moving mechanism 342. Can be adjusted.

  Moreover, since the pair of side wall parts 372 and 372 (the first side wall part 372a and the second side wall part 372b) standing upward are provided at both ends in the width direction of the bottom wall part 371 of the square pan 37, The pan 37 is open in the depth direction. Therefore, after putting the corner pan 37 into the pallet cart 36 in this state, if the raw material is put into the pallet cart 36, the raw material enters the corner pan 37 and the corner pan 37 starts from the open portion of the corner pan 37. In order to go outside, the charged state of the raw material in the actual operation can be reproduced, and the packed bed can be reproduced in the corner pan 37.

  Further, between the pair of side wall portions 372 and 372 (the first side wall portion 372a and the second side wall portion 372b), a pair of shutter walls 374 and 374 (the first shutter wall 374a) that close the side wall portions 372 and 372 are closed. Since the second shutter wall 374b) is detachable from above, and the tip end side of the shutter walls 374 and 374 has an acute angle, the shutter wall 374 and 374 can be easily inserted after the filling layer is formed in the corner pan 37, After the shutter walls 374 and 374 are inserted, the corner pan 37 can be taken out from the pallet carriage 36 with the filling layer formed on the corner pan 37 as it is.

  In addition, the bottom wall portion 371 of the square pan 37 is provided with a slit portion through which heat is passed during sintering, and at least one of the side wall portions 372 and 372 of the square pan 37 looks inside the square pan 37. Since the window part 373 for providing is provided, after taking out the square pan 37 from the pallet carriage 36, it can sinter, making the raw material in the square pan 37 blow. Further, the state of the packed bed before sintering, the state after sintering, or the state of combustion behavior during sintering can be observed through the window portion 373.

Next, a sintering experiment using a sintering simulator will be described.
In conducting the sintering experiment, first, a sintered raw material 1 (a mixture of iron ore, limestone, coke powder, etc.) is prepared according to a predetermined raw material composition. Using the test mixer 2, the raw materials are mixed, and water is further added to adjust the moisture to 7.0 mass%. About 600 kg of raw material is prepared per experiment and charged into the hopper 31.

  The elevating mechanism 32 is operated to adjust the height of the drum feeder 33, and the falling distance of the raw material 1 is set. In addition, the angle of the charging chute main body 341 is determined by the angle adjusting mechanism 35, and the horizontal position of the charging chute 34, that is, the raw material moving distance on the charging chute main body 341 is made constant by the moving mechanism 342, that is, The horizontal relative position between the charging chute 34 and the pallet carriage 36 is set.

  As shown in FIGS. 5 and 8, the square pan 37 is installed in the pallet carriage 36 with the shutter wall 374 removed. Specifically, the square pan 37 is installed so that the side wall portions 372 and 372 of the square pan 37 and the side wall portion 362 on the long side of the pallet truck 36 face each other in parallel, and the open side of the square pan 37 (shutter wall 374 The side from which the pallet truck is removed) faces the side wall 362 on the short side of the pallet carriage 36.

  After installing the square pan 37 in the pallet carriage 36, the drum feeder 33 is rotated to supply the raw material, and the raw material is stacked in the pallet truck 36 via the charging chute 34. At the same time, the rotational speed of the winder 39 is adjusted to move the pallet carriage 36. Thereby, a new filling layer is formed in the cart 36 (corner pan 37). Since the raw material having a particle size distribution and the like is deposited in the packed bed at each angle of repose, the packed layer forms a segregation layer accompanying the particle size in the height direction.

  While the square pan 37 is buried in the raw material 362, the pallet truck 36 is moved to another place. After confirming the charging position of the corner pan 37, the first shutter wall 374a and the second shutter wall 374b are inserted into the shutter grooves 375a and 375b from above, respectively. In order to prevent the sinking of the raw material and the collapse of the packed bed, the insertion of the first shutter wall 374a and the second shutter wall 374b and the removal of the raw material around the first shutter wall 374a and the second shutter wall 374a and the second shutter wall 374a are repeated alternately. Insert the shutter wall 374b to the bottom. When the raw material is collected by such a method, the collection can be realized with a new segregation layer of particle size and carbon.

Next, the square pan 37 filled with the raw material is lifted, conveyed to the place of the sintering test apparatus, and fixed on the square pan test pedestal. Using a suction blower, the coke powder in the raw material is ignited and further sucked downward to be fired. The combustion layer is observed through the window 373 (glass plate 372a2).
FIG. 9 shows an example of an experimental result using the sintering simulator of the present invention and an operation result when an actual operation is performed.

As shown in FIG. 9A, with respect to the average diameter of the raw material and the distance to the square pan (falling part), the sintering simulator was able to reproduce almost the same state (charged state) as the actual machine. Also, as shown in FIG. 9B, the sintering simulator can reproduce almost the same state (charged state) as the actual machine with respect to the carbon distribution of the raw material and the distance to the square pan (falling part). It was.
Further, as shown in FIG. 10A, in evaluating the combustion state of the packed bed, in the conventional technique, a thermocouple is provided on the side wall of the square pan, and the evaluation is performed only with the temperature measured by the thermocouple. However, in the present invention, as shown in FIG. 10 (b), an infrared image showing a temperature by a thermocouple, an image (photograph or moving image) at the time of burning the packed bed through the window 373, a temperature distribution, and the like. It became possible to evaluate through such data, and the accuracy of the evaluation of the sintered state could be improved. In addition, in evaluating the combustion state of a packed bed, in addition to the method mentioned above, the evaluation of the combustion state of a packed bed can be made better by measuring the intensity | strength of a sintered ore after sintering.

  It should be noted that matters not explicitly disclosed in the embodiment disclosed this time, such as operating conditions and operating conditions, various parameters, dimensions, weights, volumes, and the like of a component, deviate from the range normally practiced by those skilled in the art. However, matters that can be easily assumed by those skilled in the art are employed.

DESCRIPTION OF SYMBOLS 1 Raw material 2 Drum mixer 3 Sintering simulator 5 Blower machine 31 Hopper 32 Elevating mechanism 321 Fixed frame 323 Mounting base 322 Elevating member 325 Elevating frame 3251 Horizontal frame 33 Drum feeder 331 Outer cylinder 332 Inner cylinder 34 Loading chute 341 Loading Chute body 342 Movement mechanism 343 Horizontal movement frame 344 Sprocket 345 Chain 346 Operation member 35 Angle adjustment mechanism 351 Telescopic rod 352 Operation member 36 Pallet carriage 361 Bottom wall portion 362 Side wall portion 37 Square pan 371 Bottom wall portion 371a Slit plate material 371b Mounting plate 372 Side wall 372a First side wall 372a1 Window frame 372a2 Glass plate 372b Second side wall 373 Window 374 Shutter wall 374a First shutter wall 374b Second shutter wall 375a Shut Over groove 375a1 L-shaped metal fitting 375a2 through-hole (cutout portion)
375b Shutter groove 375b1 L-shaped bracket 375b1 Through hole (notch)
3771 Spacer 3772 Mounting member 3773 Bolt 3774 Reinforcing member 3775 Connecting member 38 Wire 39 Winder

Claims (1)

A hopper for inserting a raw material to be sintered, a drum feeder for cutting out the raw material stored in the hopper, a charging chute for receiving the raw material cut out by the drum feeder and discharging it to the outside, and discharging from the charging chute A pallet cart in which the raw material is charged, and a square pan that receives the raw material in the pallet cart,
A lifting mechanism for vertically moving the drum feeder, a moving mechanism for moving the charging chute in a horizontal direction, and an angle adjusting mechanism for adjusting a horizontal angle of the charging chute,
The bottom wall portion of the square pan is provided with a slit portion through which heat is passed during the sintering, and a pair of side walls standing upward from both ends of the bottom wall portion of the square pan. And at least one of the side wall portions is provided with a window portion for viewing the inside of the square pan. Between the side wall portions, a pair of shutter walls for closing between the side wall portions is provided above. The sintering simulator is provided so as to be detachable from the shutter, and the tip end side of the shutter wall has an acute angle.