CN110606382A - Double-furnace feeding device for blast furnace sinter - Google Patents
Double-furnace feeding device for blast furnace sinter Download PDFInfo
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- CN110606382A CN110606382A CN201910900127.1A CN201910900127A CN110606382A CN 110606382 A CN110606382 A CN 110606382A CN 201910900127 A CN201910900127 A CN 201910900127A CN 110606382 A CN110606382 A CN 110606382A
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- sinter
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- 230000002457 bidirectional effect Effects 0.000 claims abstract description 90
- 230000032258 transport Effects 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims description 16
- 230000009977 dual effect Effects 0.000 claims description 6
- 238000005245 sintering Methods 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 238000007599 discharging Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000002354 daily effect Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G35/00—Mechanical conveyors not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/32—Filling devices
Abstract
The invention provides a double-furnace feeding device for blast furnace sinter, which comprises: the two ends of the two-way belt conveyor are respectively provided with a belt machine head wheel, the two-way belt conveyor comprises a belt, and the belt is driven to run through the belt machine head wheels at the two ends, so that the two-way belt conveyor can be used for bidirectionally transmitting sinter; the two unloading cars are respectively arranged in the bidirectional belt conveyor and can move in the bidirectional belt conveyor in a bidirectional way, the unloading cars are provided with unloading hoppers, and the sintering ores in the unloading hoppers are conveyed to a blast furnace feeding system through a blast furnace ore groove; the one-way belt feeder, one-way belt feeder is used for with one side sinter on the belt transports to the opposite side the belt top. The device provided by the invention can realize double-furnace feeding by adopting the unilateral feeding device, is convenient to operate, effectively reduces the failure rate, has high transportation flexibility, high production efficiency and low production cost, and saves energy.
Description
Technical Field
The invention belongs to the technical field of blast furnace ironmaking transportation, and particularly relates to a double-furnace feeding device for blast furnace sinter.
Background
At present, a blast furnace sinter conveying system generally adopts a sinter single-furnace conveying and feeding device, and consists of two sets of mutually independent blast furnace sinter conveying devices, wherein each set of sinter conveying device comprises a belt, a bend wheel, a one-way unloading vehicle and a belt conveyor head wheel. The current sinter transport system can only feed in a single side and a single furnace. When the unilateral feeding device needs shutdown for maintenance or unilateral sintering ore storage is insufficient if unilateral faults occur, one of the two blast furnaces cannot feed materials timely, so that production is affected. Therefore, if the problem of single-side feeding cannot be solved, the output of the blast furnace is inevitably affected.
At present, the improvement on single-furnace sinter ore transportation is less in China, and the traditional transportation device mainly has the following characteristics and defects: 1. the unloading car can only carry out unilateral belt conveyor transportation of sinter, and the transportation amount is not easy to adjust; 2. when the single-side sintering ore inventory is insufficient, the production efficiency of the blast furnace is influenced; if the production of the sinter in the sintering area is insufficient, the blast furnace can not supply the sinter in time, and the production of molten iron in the blast furnace is influenced; 3. when the unilateral belt conveyer fails, the sintered ore can not be supplied to the blast furnace in time.
The unilateral single-furnace conveying device for the sinter cannot guarantee the production efficiency, and brings great inconvenience to blast furnace production.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The invention aims to provide a double-furnace feeding device for blast furnace sinter, which solves the problem that the conventional single-side single-furnace feeding device cannot meet the requirement of conveying and supplying the sinter to two sets of blast furnaces at the same time.
In order to achieve the above purpose, the invention provides the following technical scheme:
a dual furnace feed arrangement for blast furnace sinter comprising:
the bidirectional belt conveyor comprises belt head wheels and belts, the belt head wheels are arranged at two ends of the bidirectional belt conveyor, the belt head wheels at the two ends drive the belts to run, and the bidirectional belt conveyor can bidirectionally transmit sinter; the two bidirectional belt conveyors are respectively a first bidirectional belt conveyor and a second bidirectional belt conveyor, a first belt is arranged on the first bidirectional belt conveyor, and a second belt is arranged on the second bidirectional belt conveyor;
the two unloading cars are respectively arranged in the two-way belt conveyor and can move in two ways in the two-way belt conveyor, the unloading cars are movably connected with the belts and form unloading gaps, each unloading car is provided with an unloading hopper, the sintering ore is dumped when being conveyed to the unloading gaps and is dumped into the unloading hoppers, and the sintering ore in the unloading hoppers is conveyed to a blast furnace feeding system through a blast furnace ore groove;
one-way belt feeder, one-way belt feeder sets up two between the two-way belt feeder to be the slope setting, one end of one-way belt feeder is equipped with belt aircraft nose wheel, one-way belt feeder is used for will being located one side of one-way belt feeder sinter on the belt transports to being located one-way belt feeder opposite side the belt top.
In the above-described twin-furnace feeder for blast-furnace sintered ore, preferably, the dump car includes wheels, a car body, and press wheels, and the dump car is movably connected to the upper belt of the first belt or the second belt through the press wheels so as to form the discharge gap.
In the above-described double-furnace feeding device for blast-furnace sintered ore, preferably, an inclined portion is provided at an end portion of the first double-direction belt conveyor, which is away from the second double-direction belt conveyor, and an inclined portion is also provided at an end portion of the second double-direction belt conveyor, which is away from the first double-direction belt conveyor;
preferably, the inclined parts of the first and second bidirectional belt conveyors are both arranged obliquely upwards, and the inclination angle is not more than 12.5 °.
In the above-mentioned double-furnace feeding device for blast furnace sintered ore, preferably, there are two single-direction belt conveyors, and the two single-direction belt conveyors are obliquely and crosswise arranged.
In the above double-furnace feeding device for blast furnace sinter, preferably, the lower end parts of the two unidirectional belt conveyors are respectively provided with a unidirectional belt conveyor horizontal part, and the unidirectional belt conveyor horizontal parts extend to the lower parts of the bidirectional belt conveyors.
In the above-mentioned double-furnace feeding device for blast furnace sintered ore, preferably, the belt head wheels of the two unidirectional belts are both located above the end portion of the bidirectional belt.
In the above double-furnace feeding device for blast-furnace sinter, preferably, the double-furnace feeding device further comprises a collecting hopper for collecting the sinter transferred between the bidirectional belt conveyor and the unidirectional belt conveyor;
preferably, the number of the collection hoppers is four, and the collection hoppers are respectively and fixedly arranged below belt conveyor head wheels of the one-way belt conveyor and above the horizontal part of the one-way belt conveyor.
In the double-furnace feeding device for blast furnace sintered ore, preferably, the body of the unloading car comprises a top plate, a bottom plate and an inclined plate, two upper pinch rollers are arranged above the top plate, two lower pinch rollers are arranged above the bottom plate, and the belt moves along the inclined plate by being wound between the upper pinch rollers and the lower pinch rollers; the discharge hopper is vertically arranged between the two lower pressing wheels, and the distance between the lower pressing wheels and the discharge hopper is larger than the distance between the upper pressing wheels and the discharge hopper.
In the above-mentioned double-furnace feeding device for blast-furnace sintered ore, preferably, a support is arranged above an inclined plate of the ore-unloading vehicle, and a carrier roller is arranged on the support and can rotate to support the belt when the belt moves.
In the above-described double-furnace feeding device for blast-furnace sintered ore, preferably, the inclination angle of the one-way belt conveyor is not more than 12.5 °.
Compared with the closest prior art, the technical scheme provided by the invention has the following excellent effects:
the blast furnace sinter feeding device can realize double-furnace feeding by adopting the single-side feeding device, and has the following excellent effects:
1. the structure is simple, and the operation is convenient; compare in single stove feeding, only increase the belt feeder, collect the hopper and use two-way unloading car just can carry out two stove feeds, simple structure, the operation of being convenient for.
2. The failure rate is effectively reduced; unilateral feedway can carry out the feed of two stoves, can carry out unilateral shut down and overhaul the maintenance, has reduced equipment failure rate when guaranteeing normal production progress effectively.
3. The transportation flexibility is high; both can carry out unilateral transportation single-furnace feed, when unilateral feedway broke down or the raw materials is not enough, can unilateral supply with the sintering deposit, to the feed of two furnaces.
4. The production efficiency is high; after the blast furnace sinter double-furnace feeding device is put into use, the daily production is improved by 1200t, the daily electricity consumption can be saved by 1920kw, the daily effect is about 1000 yuan/day, the annual effect is about 36.5 ten thousand yuan/year, the production cost is reduced, the energy is saved, and the effect is obvious.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. Wherein:
FIG. 1 is a schematic structural view of a blast furnace agglomerate double-furnace feeder according to an embodiment of the present invention;
FIG. 2 is a schematic view of the dump car of FIG. 1.
In the figure: 1. a first bidirectional belt conveyor; 11. a first belt; 12. a first bidirectional belt conveyor left end head wheel; 13. a right end wheel of the first bidirectional belt conveyor; 14. a first direction-changing wheel; 15. a second direction-changing wheel; 2. a second bidirectional belt conveyor; 21. a second belt; 22. a left end head wheel of the second bidirectional belt conveyor; 23. a right end wheel of the second bidirectional belt conveyor; 24. a third direction-changing wheel; 25. a fourth direction-changing wheel; 3. a first one-way belt conveyor; 4. a second one-way belt conveyor; 5. unloading the mine car; 501. a first dump car; 502. a second dump car; 51. a discharge hopper; 52. a top plate; 53. a base plate; 54. a sloping plate; 55. an upper pinch roller; 56. a lower pinch roller; 57. a support; 58. a carrier roller; 59. a wheel; 510. a steel rail; 511. a motor; 6. a first blast furnace ore bin; 7. a second blast furnace ore bin; 71. a first collection hopper; 72. a second collection hopper; 73. a third collection hopper; 74. and a fourth collection hopper.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" used herein should be interpreted broadly, and may include, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
As shown in fig. 1 and 2, according to the embodiment of the invention, the double-furnace feeding device for blast furnace sinter ore is provided, the feeding device of the invention can realize single-side belt single-furnace feeding, and can also realize single-side ore feeding and double-furnace feeding through the cooperation of positive and negative rotation of the belt and the bidirectional ore unloading vehicle when a fault occurs or the single-side feeding is insufficient, so that the yield of multiple blast furnace ironmaking is ensured.
The invention relates to a double-furnace feeding device for blast furnace sinter, which comprises:
the sintering ore bidirectional conveying device comprises a bidirectional belt conveyor, a first belt conveyor and a second belt conveyor, wherein the bidirectional belt conveyor comprises a belt head wheel and a belt, the belt head wheel is arranged at two ends of the bidirectional belt conveyor, the belt is tightly sleeved on the periphery of the belt head wheel, and the belt can bidirectionally convey sintering ore under the rotation of the belt head wheels at the two ends of the bidirectional belt conveyor, namely the belt can rotate clockwise to convey the sintering ore and can also rotate anticlockwise to convey the sintering ore; the two bidirectional belt conveyors are respectively a first bidirectional belt conveyor 1 and a second bidirectional belt conveyor 2, a first belt 11 is arranged on the first bidirectional belt conveyor 1, and a second belt 21 is arranged on the second bidirectional belt conveyor 2; the belt head wheels at two ends of the first bidirectional belt conveyor 1 are respectively a first bidirectional belt conveyor left end wheel 12 and a first bidirectional belt conveyor right end wheel 13, and the belt head wheels at two ends of the second bidirectional belt conveyor 2 are respectively a second bidirectional belt conveyor left end wheel 22 and a second bidirectional belt conveyor right end wheel 23; the belt conveyor head wheel can rotate in two directions, namely clockwise rotation or anticlockwise rotation.
The end part of the first bidirectional belt conveyor 1, which is far away from the second bidirectional belt conveyor 2, is provided with an inclined part, the end part of the second bidirectional belt conveyor 2, which is far away from the first bidirectional belt conveyor 1, is also provided with an inclined part, the belt is tightly sleeved on the outer surface of the inclined part and is transmitted along the inclined part, the inclined parts of the first bidirectional belt conveyor 1 and the second bidirectional belt conveyor 2 are respectively the first bidirectional belt conveyor inclined part and the second bidirectional belt conveyor inclined part, the inclined parts are obliquely upwards arranged, and the inclined angle is not more than 12.. The position of the sinter ore groove is higher, so that the bidirectional belt conveyor is obliquely arranged upwards, when the inclination angle is not more than 12.5 degrees, the friction force of the sinter ore is greater than the component force of gravity along the belt direction, and the sinter ore can be normally upwards transmitted along with the belt to meet the use requirement. As shown in fig. 1, in the case of the single-sided single-furnace charging on the left side, the sintered ore is first transported up the incline of the first belt 11, then reaches the top of the incline, is redirected by the first redirecting wheel 14 below the upper belt and the second redirecting wheel 15 below the lower belt, and is then transported horizontally along the first belt 11 until reaching the dump car 5. Likewise, the same third redirecting wheel 24 and fourth redirecting wheel 25 are also provided on the second bidirectional belt conveyor 2.
The unloading car 5, the unloading car 5 includes wheel 59, automobile body and pinch roller, the unloading car 5 has two, is first unloading car 501 and second unloading car 502 respectively, first unloading car 501 sets up inside the space that encloses at the top sub-belt of first bidirectional belt feeder 1 and below sub-belt, the second unloading car 502 sets up in
Inside a space surrounded by an upper sub-belt and a lower sub-belt of the second bidirectional belt conveyor 2, the unloading vehicle 5 is movably connected with the upper sub-belt of the first belt 11 or the second belt 21 through a pressing wheel to change the belt transmission direction and form an unloading notch, the unloading notch corresponds to two unloading ends, one unloading end is an unloading end when the belt rotates clockwise, and the other unloading end is an unloading end when the belt rotates anticlockwise; the unloading car 5 is provided with a discharge hopper 51 positioned below the discharge gap, the sinter is conveyed to the discharge gap and then dumped to the discharge hopper 51, and the sinter in the discharge hopper 51 is conveyed to a blast furnace ore bin through a blast furnace ore trough and then conveyed to a blast furnace feeding system. In the specific embodiment of the invention, the wheels 59 of the dump truck 5 are movably connected below the truck body and can move in two directions in the two-way belt conveyor, and the wheels 59 are driven by the motor 511 to move forwards or backwards; preferably, a steel rail 510 is arranged inside the bidirectional belt conveyor, and the wheels 59 move forwards or backwards on the steel rail 510. In use, the discharge gap may be formed by: the number of the press wheels of the unloading car is multiple, the belt changes the transmission direction under the action of the press wheels, the belt runs downwards firstly, then runs upwards, and then runs along the deflection direction, and the deflection direction is the direction which deflects a certain angle relative to the upward direction.
In the embodiment of the invention, for the unilateral feeding device, the body of the unloading car 5 comprises a top plate 52, a bottom plate 53 and an inclined plate 54, two upper press wheels 55 are arranged above the top plate 52 and respectively comprise a left upper press wheel 55 and a right upper press wheel 55, two lower press wheels 56 are arranged above the bottom plate 53 and respectively comprise a left lower press wheel 56 and a right lower press wheel 56, and an upper belt is movably connected with the unloading car 5 through the winding mode of the left upper press wheel 55 → the left lower press wheel 56 → the right upper press wheel 55; the transmission path of the first belt 11 is: the first belt 11 passes through the first bidirectional belt conveyor left end head wheel 12 → the first bidirectional belt conveyor inclined portion → the upper press wheel 55 → the lower press wheel 56 → the upper press wheel 55 → the first bidirectional belt conveyor right end head wheel 13 → the first bidirectional belt conveyor inclined portion → the first bidirectional belt conveyor left end wheel 12, and the transfer cycle of the first belt 11 is completed. The unloading car 5 is provided with a discharging hopper 51, the discharging hopper 51 is vertically arranged between the left lower pressing wheel 56 and the right lower pressing wheel 56, preferably positioned at the centers of the left lower pressing wheel 56 and the right lower pressing wheel 56 and positioned below the upper pressing wheel 55, and the distance between the lower pressing wheel 56 and the discharging hopper 51 is larger than the distance between the upper pressing wheel 55 and the discharging hopper 51, so that the sintering ore can slide down and can be poured into the discharging hopper 51 when reaching the upper pressing wheel 55; the sinter on the belt is dumped as it is transported to the upper pinch roller 55, into the dump hopper 51, then into the blast furnace ore bin and finally to the blast furnace charging system. The upper belts of the first belt 11 and the second belt 21 are formed on the dump car 5 at an inclination angle of not more than 12.5 °.
In the embodiment of the invention, a bracket 57 perpendicular to the sloping plate 54 is provided above the sloping plate 54 of the dump car 5, and an idler 58 is provided on the bracket 57, and the idler 58 is rotatable as the belt moves for supporting the belt so that the sinter is smoothly transferred on the belt.
One-way belt feeder, one-way belt feeder set up between two-way belt feeders to be the slope setting, one end of one-way belt feeder is equipped with belt aircraft nose wheel, and belt aircraft nose wheel sets up the upper end at one-way belt feeder, is convenient for provide the belt tensile force, transmits the sinter, and one-way belt feeder is used for transporting the sinter on one side belt to opposite side belt top. In the specific embodiment of the invention, in order to realize that any single-side feeding device can perform double-furnace feeding, two one-way belt conveyors, namely a first one-way belt conveyor 3 and a second one-way belt conveyor 4, are arranged between any two single-side feeding devices, and the two one-way belt conveyors are obliquely and crossly arranged; the lower end parts of the two unidirectional belt conveyors are respectively provided with a unidirectional belt conveyor horizontal part, and the unidirectional belt conveyor horizontal parts extend to the lower part of the bidirectional belt conveyor so that the sintering ore in the discharging hopper 51 can be smoothly poured into the belt of the unidirectional belt conveyor; the belt head wheels of the two unidirectional belt conveyors are both positioned above the horizontal end part of the bidirectional belt conveyor, so that the sinter can slide into the belt of the bidirectional belt conveyor from the top of the unidirectional belt conveyor.
In the specific embodiment of the invention, the inclination angle of the one-way belt conveyor is not more than 12.5 degrees, the friction force of the sinter ore is ensured to be larger than the component force of gravity along the belt direction, and the sinter ore can be normally upwards transmitted along with the belt to meet the use requirement. The double-furnace feeding device also comprises a collecting hopper, the collecting hopper is used for containing the sintering ore transferred between the bidirectional belt conveyor and the unidirectional belt conveyor, the bottom of the collecting hopper is empty, the collecting hopper is fixedly arranged and does not move along with the belt, a certain space is formed between the bottom of the collecting hopper and the belt, the bottom of the collecting hopper is ensured not to be rubbed when the belt runs, the collecting hopper is in a conical shape with a wide upper part and a narrow lower part, the collecting hopper plays a role in buffering the falling of the sintering ore and collecting the sintering ore, and the pulverization of the sintering ore is reduced; preferably, there are four collecting hoppers, which are respectively and fixedly arranged below the two unidirectional belt head wheels and above the horizontal part of the unidirectional belt conveyor.
The double-furnace feeding device for the blast furnace sinter can realize independent feeding on two sides and single-side double-furnace feeding of the sinter.
The specific steps of using the double-furnace feeding device for blast furnace sinter ore to carry out single-side independent feeding are as follows:
as shown in fig. 1 and 2, the first unidirectional belt conveyor 3 and the second unidirectional belt conveyor 4 are firstly closed, and then the right end wheel 13 of the first bidirectional belt conveyor and the left end wheel 22 of the second bidirectional belt conveyor are opened; the blast furnace sinter transportation process of the first bidirectional belt conveyor 1 on the left is as follows: the sintered ore passes through the left end head wheel 12 of the first bidirectional belt conveyor → the inclined part of the first bidirectional belt conveyor → the first diverting wheel 14 → the left upper press wheel 55 → the discharge hopper 51 → the first blast furnace ore bin 6 in sequence on the first belt 11.
The blast furnace sinter transportation process of the second bidirectional belt conveyor 2 is as follows:
the sintered ore passes through a second bidirectional belt conveyor right end head wheel 23 → a second bidirectional belt conveyor inclined part → a third bend wheel 24 → a right upper pressing wheel 55 → a discharge hopper 51 → a second blast furnace ore bin 7 in sequence on the second belt 21.
And the sintered ore entering the blast furnace ore bin is stored for later use, and then enters the blast furnace for smelting molten iron.
When a single side fails or the sintered ore in the single-side sintered ore bin is insufficient, the double-furnace feeding device for the blast furnace sintered ore is used for double-furnace feeding, and two feeding modes exist.
The method comprises the following steps that a first bidirectional belt conveyor 1 on the left supplies materials to a second bidirectional belt conveyor 2 on the right, and the method comprises the following specific steps:
the method comprises the steps of firstly transporting and feeding a first blast furnace ore bin 6 according to the single-side independent feeding process until sintered ore in the first blast furnace ore bin 6 meets the requirement of a first blast furnace, then starting feeding a second blast furnace ore bin 7, namely starting a double-furnace feeding mode.
Starting a right end wheel 13 of the first bidirectional belt conveyor (clockwise rotation), starting the first unidirectional belt conveyor 3 (clockwise rotation), starting a right end wheel 23 of the second bidirectional belt conveyor (clockwise rotation), moving the first ore-unloading vehicle 501 to a first collecting hopper 71 to ensure that a discharging hopper 51 is positioned above the first collecting hopper 71, moving and transporting the sinter on a first belt 11 through a first bidirectional belt conveyor head wheel 12 to the discharging hopper 51 of the first ore-unloading vehicle 501, pouring the sinter in the discharging hopper 51 into the first collecting hopper 71, fixedly arranging the first collecting hopper 71 above a horizontal section of the first unidirectional belt conveyor 3, enabling the sinter to fall onto a belt below from the bottom of the first collecting hopper 71, obliquely upwards transporting to the top end along the first unidirectional belt conveyor 3 and falling into a second collecting hopper 72, transporting the sinter to a left upper pinch roller 55 along a second belt 21, then pouring the sinter into the discharging hopper 51 of the second ore-unloading vehicle 502 after tilting, then enters a second blast furnace ore bin 7 and is finally transported to a second blast furnace feeding system.
The feeding of the second bidirectional belt conveyor 2 on the right side to the first bidirectional belt conveyor 1 on the left side is similar to the feeding mode of the double furnaces, and the specific steps are as follows:
the second blast furnace ore bin 7 is transported and fed according to the single-side independent feeding process until the sintered ore in the second blast furnace ore bin 7 meets the requirement of a second blast furnace, and then the first blast furnace ore bin 6 starts to be fed, namely, a double-furnace feeding mode is started.
Opening the left end head wheel 22 of the second bidirectional belt conveyor (anticlockwise rotation), opening the second unidirectional belt conveyor 4 (anticlockwise rotation), opening the left end head wheel 12 of the first bidirectional belt conveyor (anticlockwise rotation), moving the second ore-unloading vehicle 502 to the third collecting hopper 73, sliding the sintered ore into the discharging hopper 51 of the second ore-unloading vehicle 502, pouring the sintered ore in the discharging hopper 51 into the third collecting hopper 73, fixedly arranging the third collecting hopper 73 above the horizontal section of the second unidirectional belt conveyor 4, dropping the sintered ore onto the belt below from the bottom of the third collecting hopper 73, obliquely and upwards transporting to the top end and sliding into the fourth collecting hopper 74, then transporting the sintered ore backwards along the first belt 11 and pouring into the discharging hopper 51 of the first ore-unloading vehicle 501, then entering the first blast furnace ore bin 6, and finally transporting to the first blast furnace feeding system.
In conclusion, the blast furnace sinter feeding device disclosed by the invention can realize single-side independent feeding and single-side double-furnace feeding, and has the following excellent effects:
1. the structure is simple, and the operation is convenient; compared with single-furnace feeding, the double-furnace feeding can be carried out only by adding a belt conveyor and using a bidirectional unloading car, the structure is simple, and the operation is convenient.
2. The failure rate is effectively reduced; unilateral feedway can carry out the feed of two stoves, can carry out unilateral shut down and overhaul the maintenance, has reduced equipment failure rate when guaranteeing normal production progress effectively.
3. The transportation flexibility is high; both can carry out unilateral transportation single stove feed, when unilateral feedway broke down or the raw materials is not enough, can unilateral provide the sintering deposit, ensure the interior material of ore bin of two furnaces, satisfy the blast furnace demand.
4. The production efficiency is high; after the blast furnace sinter double-furnace feeding device is put into use, the daily production is improved by 1200t, the daily electricity consumption can be saved by 1920kw, the daily effect is about 1000 yuan/day, the annual effect is about 36.5 ten thousand yuan/year, the production cost is reduced, the energy is saved, and the effect is obvious.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A double-furnace feeding device for blast furnace sinter, characterized by comprising:
the bidirectional belt conveyor comprises belt head wheels and belts, the belt head wheels are arranged at two ends of the bidirectional belt conveyor, the belt head wheels at the two ends drive the belts to run, and the bidirectional belt conveyor can bidirectionally transmit sinter; the two bidirectional belt conveyors are respectively a first bidirectional belt conveyor and a second bidirectional belt conveyor, a first belt is arranged on the first bidirectional belt conveyor, and a second belt is arranged on the second bidirectional belt conveyor;
the two unloading cars are respectively arranged in the bidirectional belt conveyor and can move in the bidirectional belt conveyor in a bidirectional mode, the unloading cars are movably connected with the belts and form unloading gaps, unloading hoppers are arranged on the unloading cars, sinter is dumped when being conveyed to the unloading gaps and dumped into the unloading hoppers, and the sinter in the unloading hoppers is conveyed to a blast furnace feeding system;
one-way belt feeder, one-way belt feeder sets up two between the two-way belt feeder to be the slope setting, one-way belt feeder is used for will being located one side of one-way belt feeder sinter on the belt transports to being located one side of one-way belt feeder opposite side the belt top.
2. The twin-furnace feeder of blast furnace sintered ore according to claim 1, wherein said dump car comprises wheels, a car body and press wheels, said dump car being movably connected to the upper belt of said first belt or said second belt by means of said press wheels so as to form said discharge gap.
3. The dual furnace feeder of blast furnace sinter as claimed in claim 1, wherein the end of the first bi-directional belt conveyor remote from the second bi-directional belt conveyor is provided with an inclined portion, and the end of the second bi-directional belt conveyor remote from the first bi-directional belt conveyor is also provided with an inclined portion; the belt is tightly sleeved on the outer surface of the inclined part and is conveyed along the inclined part;
preferably, the inclined parts of the first and second bidirectional belt conveyors are both arranged obliquely upwards, and the inclination angle is not more than 12.5 °.
4. The dual furnace feeder of blast furnace sinter as claimed in claim 1, wherein there are two single-direction belt conveyors, and the two single-direction belt conveyors are arranged to be inclined across.
5. The twin furnace feeder of blast furnace agglomerates of claim 4, wherein said lower ends of both of said one-way belt conveyors have one-way belt conveyor horizontal portions extending below said two-way belt conveyors.
6. The dual furnace feeder of blast furnace sinter as claimed in claim 4, wherein the belt head wheels of both of the one-way belts are located above the ends of the two-way belt.
7. The dual furnace feeder of blast furnace sinter as claimed in claim 5 or claim 6, further comprising a collection hopper for collecting sinter being transferred between the bi-directional belt conveyor and the uni-directional belt conveyor;
preferably, the number of the collection hoppers is four, and the collection hoppers are respectively and fixedly arranged below belt conveyor head wheels of the one-way belt conveyor and above the horizontal part of the one-way belt conveyor.
8. The twin-furnace feeder of blast furnace sintered ore according to claim 2, wherein the body of the dump car comprises a top plate, a bottom plate and an inclined plate, two upper press wheels are provided above the top plate, two lower press wheels are provided above the bottom plate, and the belt moves along the inclined plate by being wound between the upper press wheels and the lower press wheels; the discharge hopper is vertically arranged between the two lower pressing wheels, and the distance between the lower pressing wheels and the discharge hopper is larger than the distance between the upper pressing wheels and the discharge hopper.
9. The twin-furnace feeder of blast furnace sintered ore according to claim 8, wherein a support is provided above the inclined plate of the ore-unloading vehicle, and an idler is provided on the support, and the idler is rotatable to support the belt when the belt moves.
10. The dual furnace feeder of blast furnace sinter as claimed in claim 1, in which the belt conveyor is inclined at an angle of not more than 12.5 °.
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| CN201910900127.1A CN110606382A (en) | 2019-09-23 | 2019-09-23 | Double-furnace feeding device for blast furnace sinter |
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| CN201910900127.1A CN110606382A (en) | 2019-09-23 | 2019-09-23 | Double-furnace feeding device for blast furnace sinter |
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