CN113462838A

CN113462838A - Blast furnace burden adding equipment and method

Info

Publication number: CN113462838A
Application number: CN202110765708.6A
Authority: CN
Inventors: 刘传院; 谢仁志; 李伟; 邱旭; 吴金富; 李明星; 杨国新; 翁映桃; 庄锦填; 陈翠丽
Original assignee: SGIS Songshan Co Ltd
Current assignee: SGIS Songshan Co Ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-10-01
Anticipated expiration: 2041-07-07
Also published as: CN113462838B

Abstract

The invention belongs to the technical field of blast furnace operation processes, and discloses blast furnace burden adding equipment and a blast furnace burden adding method. The coke feeding system is used for providing coke raw materials for the blast furnace and comprises a first coke feeding system and a second coke feeding system which are independent of each other; the ore feeding system is used for providing ore seeds for the blast furnace and comprises a plurality of ore storage bins, a plurality of ore weighing hoppers, a first conveying main belt, a second conveying main belt, a first intermediate hopper and a second intermediate hopper; the ore storage bin is used for receiving ore seeds sent by the blast furnace transfer station, and when the coke feeding system breaks down, the coke raw materials can be received by the partial ore storage bin. According to the furnace charge adding method, when a coke feeding system fails, empty cars of the skip cars can not go to the blast furnace, the feeding of ore seeds can not be influenced, the feeding speed is prevented from being reduced, the shortage, the reduction and the damping down of the blast furnace are avoided, and the production efficiency is ensured.

Description

Blast furnace burden adding equipment and method

Technical Field

The invention relates to the technical field of blast furnace operation processes, in particular to blast furnace burden adding equipment and a burden adding method.

Background

At present, ores and cokes used in the smelting process of a blast furnace loaded by a skip car are conveyed into various storage bins of the blast furnace through a belt by a blast furnace transfer station, and then enter corresponding ore weighing hoppers or coke weighing hoppers after redundant powder is screened out by a vibrating screen, so that weighing is completed. The furnace burden charging equipment generally adopts two material trucks to alternately charge coke and ore through a winch, and correspondingly, a charging system of the ore and the coke is also arranged to be two on the left side and the right side. The feeding process of ore and coke is different, the ore selects the discharging sequence through the discharging door of each ore weighing hopper, the ore is sent into the middle hopper through the main belt, and the middle hopper can discharge the ore into the right skip car or the left skip car through the action of the turning plate; coke does not need to pass through any belt, and the coke can be discharged into the corresponding right skip car and the left skip car only by opening the discharge doors of the right coke weighing hopper and the left coke weighing hopper. And starting the winch to alternately pull the two material trucks to the furnace top, and finally reasonably distributing the furnace burden into the furnace through each valve on the furnace top. When the existing furnace skip car is used for feeding materials, coke on the right side can only be loaded into the right skip car, and coke on the left side can only be loaded into the left skip car. When the right coke feeding system or the left coke feeding system breaks down (such as replacing a vibrating screen, replacing a broken coke belt, replacing a motor and the like), the coke system on the side is forbidden to process equipment faults, coke feeding can be completed only by using a mode that one skip car feeds and the other skip car runs empty, the feeding speed is reduced, the material loss of the blast furnace, the wind reduction and even the wind break are caused, and the production efficiency is reduced.

Disclosure of Invention

The invention aims to provide a blast furnace burden adding device and a blast furnace burden adding method, when a unilateral coke feeding system breaks down, the phenomenon that a first skip car or a second skip car goes to a blast furnace in an empty state can not occur, the feeding speed is prevented from being slowed down, the shortage of materials, the wind reduction and even the damping down of the blast furnace are avoided, and the production efficiency is ensured.

In order to achieve the purpose, the invention adopts the following technical scheme:

in one aspect, a blast furnace charge dosing apparatus is provided, comprising:

the coke feeding system is configured to provide coke raw materials for the blast furnace, and comprises a first coke feeding system and a second coke feeding system, wherein the first coke feeding system comprises a first coke bin and a first coke weighing hopper, the first coke bin receives the coke raw materials sent by the blast furnace transfer station and conveys the coke raw materials to the first coke weighing hopper, and the first coke weighing hopper is configured to weigh the coke raw materials; the second coke feeding system comprises a second coke bin and a second coke weighing hopper, the second coke bin receives the coke raw material sent by the blast furnace transfer station and conveys the coke raw material to the second coke weighing hopper, and the second coke weighing hopper is configured to weigh the coke raw material; the first coke feeding system and the second coke feeding system are independent from each other;

an ore charging system configured to provide an ore charge to the blast furnace, comprising:

a plurality of ore storage silos configured to receive the ore feed from the blast furnace terminal, portions of the ore storage silos capable of receiving the coke material when the coke feeding system fails;

a plurality of ore weighing hoppers configured to weigh the ore seeds, the ore weighing hoppers corresponding to the ore storage bins;

a first conveyor main belt and a second conveyor main belt configured to convey the weighed ore seed; and

a first intermediate hopper and a second intermediate hopper configured to receive the ore species conveyed by the first conveyor main belt, and/or the second conveyor main belt; and

a first skip and a second skip, the first skip configured to receive the ore material output by the first intermediate hopper and the coke feedstock output by the first coke scale hopper; the second skip is configured to receive the ore material output by the second intermediate hopper and the coke material output by the second coke scale hopper.

As a preferred structure of the present invention, the ore storage bin includes a plurality of sintering ore bins, a plurality of pellet ore bins, and a plurality of raw ore bins, and the plurality of sintering ore bins, the plurality of pellet ore bins, and the plurality of raw ore bins are arranged at intervals; at least one of the sintering ore bins is capable of receiving the coke feedstock when the coke feeding system fails.

The preferable structure of the invention also comprises a control system, wherein the control system is provided with a plurality of feeding programs, and the feeding programs are configured to control the feeding sequence of the coke feeding system and the ore feeding system.

As a preferable structure of the present invention, the ore processing apparatus further includes an intermediate ore turning plate configured to connect the first or second conveying main belt to the first or second intermediate hopper.

As a preferred structure of the present invention, the coke feeding system further includes a first coke-crushing belt configured to convey the coke waste sieved by the first coke bin and a second coke-crushing belt configured to convey the coke waste sieved by the second coke bin.

As a preferable structure of the present invention, the first coke bin includes a first discharge gate, and the first discharge gate corresponds to the first coke hopper; the second coke bin comprises a second discharge gate, and the second discharge gate corresponds to the second coke weighing hopper.

On the other hand, the blast furnace burden adding equipment comprises the following steps:

step S1, when the first coke feeding system breaks down, the first coke feeding system is forbidden, and the control system changes the feeding program;

step S2, emptying ore seeds in at least one sintering ore bin, conveying coke raw materials into the sintering ore bin by a blast furnace transfer station, conveying the coke raw materials to a corresponding ore weighing hopper by the sintering ore bin, and weighing the required coke raw materials by the ore weighing hopper;

step S3, opening the ore weighing hopper, and enabling the weighed coke raw material to enter a first intermediate hopper through a first conveying main belt or a second conveying main belt;

and step S4, the first middle hopper outputs the coke raw material to a first skip car, and the first skip car conveys the coke raw material to a blast furnace to finish the charging of the coke raw material.

In a preferred embodiment of the present invention, in step S2, there are two empty sintered ore bins.

As a preferred embodiment of the present invention, the step S2 further includes that the sintering bin performs vibratory screening on the coke raw material.

As a preferred embodiment of the present invention, when the second coke feeding system fails, the steps S1 and S2 are repeated, and after the step S2, the method further includes the following steps:

s301, opening the ore weighing hopper, and enabling the weighed coke raw material to enter a second intermediate hopper through a first conveying main belt or a second conveying main belt;

and S401, outputting the coke raw material to a second skip car by the second middle hopper, and conveying the coke raw material to the blast furnace by the second skip car to finish the charging of the coke raw material.

The invention has the beneficial effects that: the blast furnace burden adding equipment and the burden adding method provided by the invention are used for solving the problem of slow feeding speed when a unilateral coke feeding system fails, when any one of a first coke feeding system or a second coke feeding system fails, the feeding system is forbidden, at the moment, part of ore storage bins are used for receiving coke raw materials, the coke raw materials enter corresponding ore weighing hoppers from the ore storage bins, enter a first middle hopper or a second middle hopper through a first conveying main belt or a second conveying main belt, and finally flexibly enter the corresponding first skip or second skip to replace the forbidden first coke feeding system or second coke feeding system for feeding the coke raw materials, so that the phenomenon that the first skip or second skip is empty to a blast furnace is ensured not to occur, the normal feeding of ore types is not influenced, and the feeding speed is prevented from being slowed, avoiding the shortage of materials, reducing the wind and even damping down of the blast furnace, realizing the continuous and stable production of the blast furnace and ensuring the production efficiency.

Drawings

FIG. 1 is a schematic structural view of a blast furnace burden charging apparatus according to an embodiment of the present invention.

In the figure:

1. 1# sintering ore bin; 2. a No. 1 raw ore bin; 3. 2# sintering ore bin; 4. 2# raw ore bin; 5. 3# sintering ore bin; 6. 3# raw ore bin; 7. 4# sintering ore bin; 8. 1# pellet ore bin; 9. 5# sintering ore bin; 10. 2# pellet ore bin; 11. 6# sintering ore bin; 12. 3# pellet ore bin; 13. 7# sintering ore bin; 14. 4# pellet ore bin; 15. 8# sintering ore bin; 16. no. 4 raw ore bin; 17. 9# sintering ore bin; 18. no. 5 raw ore bin; 19. 10# sintering ore bin; 20. no. 6 green ore bin; 21. weighing hoppers in 10# branch; 22. 9# branch weighing hopper; 23. 8# branch weighing hopper; 24. 7# branch weighing hopper; 25. the No. 6 is divided into a weighing hopper; 26. 5# branch weighing hopper; 27. 4# branch weighing hopper; 28. 3# branch weighing hopper; 29. 2# branch weighing hopper; 30. 1# is divided into a weighing hopper; 35. a first intermediate hopper; 36. a second intermediate hopper; 37. a first coke bin; 38. a second coke bin; 39. a first coke hopper; 40. a second coke hopper; 41. a first main belt; 42. a first # 1 return run belt; 43. a first # 2 return belt; 44. a first coke-breaking belt; 45. a second main belt; 46. a second 1# return belt; 47. a second 2# return belt; 48. a second coke-crushing belt; 49. turning the plate by the middle ore; 50. a first skip; 51. a second skip;

100. a coke feeding system; 101. a first coke charging system; 102. a second coke charging system; 200. an ore feeding system; 201. an ore storage bin; 202. an ore weighing hopper.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Example one

As shown in fig. 1, the embodiment of the present invention provides a blast furnace burden distribution equipment, which includes a coke feeding system 100, an ore feeding system 200, a first skip 50 and a second skip 51. The coke feeding system 100 is configured to provide coke raw materials for a blast furnace, and comprises a first coke feeding system 101 and a second coke feeding system 102, wherein the first coke feeding system 101 comprises a first coke bin 37 and a first coke hopper 39, the first coke bin 37 receives the coke raw materials sent by a blast furnace transfer station and conveys the coke raw materials to the first coke hopper 39, and the first coke hopper 39 is configured to weigh the coke raw materials; the second coke feeding system 102 comprises a second coke bin 38 and a second coke hopper 40, the second coke bin 38 receives the coke material from the blast furnace transfer station and transfers the coke material to the second coke hopper 40, and the second coke hopper 40 is configured to weigh the coke material; the first coke feeding system 101 and the second coke feeding system 102 are independent from each other. The ore charging system 200 is configured to supply ore seeds to the blast furnace, and includes a plurality of ore storage silos 201, a plurality of ore weighing hoppers 202, first and second conveyor

main belts

41, 45, first and second

intermediate hoppers

35, 36; the ore storage silos 201 are configured to receive ore feed from blast furnace transfer stations, and when the coke feeding system 100 fails, a portion of the ore storage silos 201 are capable of receiving coke feed; the ore weighing hoppers 202 are configured to weigh ore material seeds, and the ore weighing hoppers 202 correspond to the ore storage bins 201; the first and second conveyor

main belts

41 and 45 are configured to convey the weighed ore material seeds; the first and second

intermediate hoppers

35, 36 are configured to receive ore species conveyed by the first conveyor main belt 41, and/or the second conveyor main belt 45. Preferably, the blast furnace burden distribution equipment is provided with an intermediate ore turning plate 49, the intermediate ore turning plate 49 is configured to communicate the first main conveying belt 41 or the second main conveying belt 45 with the first intermediate hopper 35 or the second intermediate hopper 36, that is, through the intermediate ore turning plate 49, the ore material type on the first main conveying belt 41 can be selectively sent to the first intermediate hopper 35 or the second intermediate hopper 36, and the ore material type on the second main conveying belt 45 can also be selectively sent to the first intermediate hopper 35 or the second intermediate hopper 36, and the specific selection is set according to production needs, and the embodiment is not limited herein. The first skip 50 is configured to receive the ore material output from the first intermediate hopper 35 and the coke material output from the first coke scale hopper 39; the second skip 51 is configured to receive the ore seed material output from the second intermediate hopper 36 and the coke material output from the second coke scale hopper 40.

Preferably, the blast furnace burden charging equipment further comprises a first No. 1 return belt 42 and a first No. 2 return belt 43, which are used for conveying ore powder waste materials after being subjected to vibratory screening through the left ore storage bin 201; the ore storage bin further comprises a second 1# return belt 46 and a second 2# return belt 47 which are used for conveying ore powder waste materials after the ore storage bin 201 on the right is subjected to vibratory screening.

It should be noted that the receiving sequence of the ore material and the coke material by the first skip 50 is alternated, that is: the receiving sequence of the ore material seeds and the coke raw materials by the second skip car 51 is also carried out alternately, the first skip car 50 and the second skip car 51 are also used for alternately conveying the ore material seeds or the coke raw materials to the blast furnace under the control of the winch, the ore material seeds or the coke raw materials are set according to the process requirements of the blast furnace, once the conveying sequence is broken, the material mixing phenomenon can occur, and serious consequences are generated for smelting. The blast furnace burden adding equipment provided by the embodiment of the invention is used for solving the problem of slow feeding speed when a unilateral coke feeding system fails, when any one of the first coke feeding system 101 or the second coke feeding system 102 fails, the coke feeding system is forbidden, at this time, part of ore storage bins 201 are used for receiving coke raw materials, the coke raw materials enter corresponding ore weighing bins 202 from the part of ore storage bins 201, enter the first middle bins 35 or the second middle bins 36 through the first conveying main belt 41 or the second conveying main belt 45, and finally flexibly enter corresponding first material trucks 50 or second material trucks 51 to replace the forbidden first coke feeding system 101 or second coke feeding system 102 for feeding the coke raw materials, so that the phenomenon that the first material trucks 50 or second material trucks 51 go to the blast furnace in an empty state is avoided. Storehouse 201 is stored to remaining ore still can normally receive the ore material kind, can not influence the normal material loading of ore material kind, prevents that the material loading speed from slowing down, avoids blast furnace to lack the material, subtracts wind or even the damping down, realizes that the blast furnace lasts stable production, guarantees production efficiency.

Further, the ore storage bin 201 comprises a plurality of sintering ore bins, a plurality of pellet ore bins and a plurality of raw ore bins, wherein the plurality of sintering ore bins, the plurality of pellet ore bins and the plurality of raw ore bins are arranged at intervals; the sintering bin is capable of receiving coke feed when the coke feeding system 100 fails. As shown in fig. 1, in the embodiment of the present invention, the plurality of sintered ore bins are # 1 sintered ore bin 1, # 2 sintered ore bin 3, # 3 sintered ore bin 5, # 4 sintered ore bin 7, # 5 sintered ore bin 9, # 6 sintered ore bin 11, # 7 sintered ore bin 13, # 8 sintered ore bin 15, # 9 sintered ore bin 17, and # 10 sintered ore bin 19; the plurality of pellet ore bins comprise a No. 1 pellet ore bin 8, a No. 2 pellet ore bin 10, a No. 3 pellet ore bin 12 and a No. 4 pellet ore bin 14; the plurality of raw ore bins include a # 1 raw ore bin 2, a # 2 raw ore bin 4, a # 3 raw ore bin 6, a # 4 raw ore bin 16, a # 5 raw ore bin 18, and a # 6 raw ore bin 20. Sintering ore storehouse, pellet ore storehouse and green ore storehouse are used for the different ore material types of partial shipment, and a plurality of sintering ore storehouses, a plurality of pellet ore storehouses and a plurality of green ore storehouse interval set up, are convenient for mix the ore material type of difference, alternate use improves material loading efficiency. When coke feeding system 100 breaks down, select sintering ore storehouse to receive the coke raw materials, because the structure of the vibrating screen frequency and the screen cloth of sintering ore storehouse more can satisfy the material loading requirement of coke raw materials for the coke raw materials quality and the weight that get into first skip 50 or second skip 51 at last are stable, guarantee to smelt the quality. In other embodiments, at least one pellet bin or at least one raw ore bin may be selected to receive coke raw material, and this embodiment is not described herein. Accordingly, the plurality of different ore storage silos 201 correspond to a plurality of different ore weighing hoppers 202, and in this embodiment, the ore weighing hoppers 202 include a # 1 sub-weighing hopper 30, a # 2 sub-weighing hopper 29, a # 3 sub-weighing hopper 28, a # 4 sub-weighing hopper 27, a # 5 sub-weighing hopper 26, a # 6 sub-weighing hopper 25, a # 7 sub-weighing hopper 24, a # 8 sub-weighing hopper 23, a # 9 sub-weighing hopper 22 and a # 10 sub-weighing hopper 21. Ten ore weighing hoppers 202 are arranged in sequence and respectively correspond to different ore storage bins 201. The ore seeds in the sintering bin, the pelletizing bin and the green bin enter the corresponding ore weighing hoppers 202 after being screened by vibration to remove redundant powder.

Further, the blast furnace charge dosing apparatus further includes a control system (not shown) provided with a plurality of charging programs, also known in the art as charging programs, configured to control the charging sequence of the coke charging system 100 and the ore charging system 200. Through the control system, the feeding sequence, the feeding weight and the like of the first coke feeding system 101, the second coke feeding system 102 and the ore feeding system 200 can be set, so that the smelting quality is prevented from being influenced by the material mixing phenomenon. When any one of the first coke feeding system 101 or the second coke feeding system 102 fails, the control system can call different feeding programs to complete charge material addition.

Further, the coke feeding system 100 also includes a first coke-reducing belt 44 and a second coke-reducing belt 48, the first coke-reducing belt 44 being configured to convey the coke waste that is vibrationally screened by the first coke bin 37, and the second coke-reducing belt 48 being configured to convey the coke waste that is vibrationally screened by the second coke bin 38. The first coke bin 37 and the second coke bin 38 perform vibrating sieving on the coke raw materials inside to screen out redundant powder, and the sieved waste materials are conveyed through the first coke crushing belt 44 and the second coke crushing belt 48 respectively to ensure the quality of the coke raw materials. Further, the first coke bin 37 includes a first discharge gate (not shown) corresponding to the first coke hopper 39; the second coke bin 38 includes a second discharge gate (not shown) corresponding to a second coke hopper 40. The first coke bin 37 feeds the coke raw material after vibrating screening into a first coke weighing hopper 39 through a first discharging door, so that the coke raw material can be conveniently fed through a first skip 50; the second coke bin 37 feeds the vibrated and sieved coke raw material into the second coke weighing hopper 40 through the second discharging door, so that the coke raw material can be conveniently fed through the second skip 51.

Example two

The embodiment of the invention provides a furnace charge adding method, and blast furnace charge adding equipment in the first embodiment comprises the following steps:

step S1, when the first coke feeding system 101 breaks down, the first coke feeding system 101 is forbidden, and the control system changes the feeding program;

in step S1, when the first coke feeding system 101 fails, including any one of the first coke bin 37, the first discharge gate, the first coke hopper 39, or the first coke crushing belt 44 fails, it is necessary to disable all the first coke feeding system 101 and immediately change the feeding program (feeding system) to the control system. It should be noted that in the feeding procedure of the control system, names of different storage bins are different, for example, in the present embodiment, a represents a sintering bin, and K represents a first coke bin 37 and a second coke bin 38, when the feeding procedure is modified, in a new feeding procedure, a sintering bin selected for containing coke raw material needs to be renamed, which is different from a and K, for example, indicated by Q, and is distinguished from other sintering bins still used for containing ore seeds, so that the feeding procedure can control the feeding sequence of the coke raw material and the ore seeds, and mixing can be avoided. In other embodiments, other letters can be used to designate the empty sintering bin, and the embodiment is not limited herein.

Step S2, emptying ore seeds in at least one sintering ore bin, conveying coke raw materials into the sintering ore bin by a blast furnace transfer station, conveying the coke raw materials to a corresponding ore weighing hopper 202 by the sintering ore bin, and weighing the required coke raw materials by the ore weighing hopper 202;

in the present step S2, the No. 1 sintered ore bin 1 and the No. 2 sintered ore bin 3 are selected for emptying, and after the ore material is emptied, the blast furnace transfer station delivers the coke raw material into the No. 1 sintered ore bin 1 and the No. 2 sintered ore bin 3. Preferably, two emptied sintering ore bins are selected, so that the two sintering ore bins can discharge and weigh materials at the same time, and the weight of each batch of coke raw materials is guaranteed to reach the standard. In other embodiments, other sintered ore bins may be selected, for example, the 9# sintered ore bin 17 and the 10# sintered ore bin 19 may also be selected, and the present embodiment is not limited thereto.

In step S2, the method further includes that the # 1 sintered ore bin 1 and the # 2 sintered ore bin 3 perform vibrating sieving on the coke raw material to remove excessive powder. Because the vibrating sieving frequency of the sintering ore bin and the arrangement of the screen can better meet the feeding requirement of coke raw materials, the quality and the weight of the coke raw materials finally entering the first skip 50 or the second skip 51 are stable, and the smelting quality is ensured.

Step S3, opening the ore weighing hopper 202, and enabling the weighed coke raw material to enter the first intermediate hopper 35 through the first conveying main belt 41 or the second conveying main belt 45;

in this embodiment, the coke raw material weighed by the ore hopper 202 is fed to the first intermediate hopper 35 by the first conveyor belt 41. Since the # 1 sintered ore storage silo 1 and the # 2 sintered ore storage silo 3 correspond to the # 10 sub-weighing hoppers 21 and the # 9 sub-weighing hoppers 22 in the ore weighing hopper 202, the coke raw material needs to be conveyed by the first conveying main belt 41 below the # 10 sub-weighing hoppers 21 and the # 9 sub-weighing hoppers 22. In other embodiments, if other sintering bins are selected, the corresponding first conveying main belt 41 or second conveying main belt 45 is used, and the embodiment is not limited herein. For example, when the 9# sintering ore bin 17 and the 10# sintering ore bin 19 are selected to be filled with coke raw materials, the coke raw materials enter the 2# sub-weighing hopper 29 and the 1# sub-weighing hopper 30, respectively, and then when the coke raw materials are conveyed by the second conveying main belt 45, in order to make the coke raw materials on the second conveying main belt 45 enter the first intermediate hopper 35, the intermediate ore turning plate 49 needs to be adjusted to make the second conveying main belt 45 communicate with the first intermediate hopper 35.

Step S4, the first intermediate hopper 35 outputs the coke raw material to the first skip 50, and the first skip 50 delivers the coke raw material to the blast furnace, thereby completing charging of the coke raw material.

Because first skip 50 can only receive the coke raw materials of first coke scale bucket 39 output, when first coke feeding system 101 breaks down and is forbidden, the coke raw materials of fighting 35 in the middle of carrying to first through ore feeding system 200 can get into first skip 50 according to required weight and material loading order, guarantee the normal clear of charge joining, the phenomenon of first skip 50 or second skip 51 empty wagon to the blast furnace can not appear, and can not influence the normal material loading of ore material kind, prevent that the material loading speed slows down, avoid the blast furnace to lack the material, reduce wind or even stop wind, guarantee production efficiency.

Further, when the second coke feeding system 102 malfunctions, the steps S1 and S2 are repeated, and the steps S301 and S401 are further included after the step S2 as follows:

step S1, when the second coke feeding system 102 breaks down, the second coke feeding system 102 is forbidden, and the control system changes the feeding program;

step S301, opening the ore weighing hopper 202, and enabling the weighed coke raw material to enter the second intermediate hopper 36 through the first conveying main belt 41 or the second conveying main belt 45;

when the second coke feeding system 102 of the present embodiment is out of order, steps S1 and S2 are the same as the charging material adding method when the first coke feeding system 101 is out of order, except that after step S2, the coke material conveyed by the first conveying main belt 41 or the second conveying main belt 45 needs to enter the second intermediate hopper 36 instead of the coke material conveyed by the second coke feeding system 102 to the second skip 51.

Step S401, the second intermediate hopper 36 outputs the coke raw material to the second skip 51, and the second skip 51 conveys the coke raw material to the blast furnace, thereby completing charging of the coke raw material.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A blast furnace burden charging equipment is characterized by comprising:

a coke charging system (100), the coke charging system (100) configured to provide a blast furnace with a coke feedstock, comprising a first coke charging system (101) and a second coke charging system (102), the first coke charging system (101) comprising a first coke bin (37) and a first coke hopper (39), the first coke bin (37) receiving the coke feedstock from a blast furnace transfer station and delivering the coke feedstock to the first coke hopper (39), the first coke hopper (39) configured to weigh the coke feedstock; the second coke charging system (102) comprises a second coke bin (38) and a second coke hopper (40), the second coke bin (38) receives the coke feedstock fed by the blast furnace transfer station and conveys the coke feedstock to the second coke hopper (40), and the second coke hopper (40) is configured to weigh the coke feedstock; the first coke charging system (101) and the second coke charging system (102) are independent from each other;

an ore charging system (200), the ore charging system (200) configured to provide an ore charge to the blast furnace, comprising:

a plurality of ore storage silos (201), said ore storage silos (201) being configured to receive said ore feed introduced by said blast furnace terminal, portions of said ore storage silos (201) being capable of receiving said coke feed when said coke feeding system (100) fails;

a plurality of ore hoppers (202), the ore hoppers (202) being configured to weigh the ore seeds, the ore hoppers (202) corresponding to the ore storage bins (201);

a first conveyor main belt (41) and a second conveyor main belt (45), the first conveyor main belt (41) and the second conveyor main belt (45) being configured to convey the weighed ore species; and

a first intermediate hopper (35) and a second intermediate hopper (36), the first intermediate hopper (35) and the second intermediate hopper (36) being configured to receive the ore species conveyed by the first conveyor main belt (41), and/or by the second conveyor main belt (45); and

a first skip (50) and a second skip (51), the first skip (50) being configured to receive the ore material output by the first intermediate hopper (35) and the coke material output by the first coke scale hopper (39); the second skip (51) is configured to receive the ore material output by the second intermediate hopper (36) and the coke material output by the second coke scale hopper (40).

2. The blast furnace burden charging equipment according to claim 1, characterized in that the ore storage bin (201) comprises a plurality of sintering ore bins, a plurality of pellet ore bins and a plurality of raw ore bins, and the plurality of sintering ore bins, the plurality of pellet ore bins and the plurality of raw ore bins are arranged at intervals; at least one of the sintering silos is capable of receiving the coke feedstock when the coke charging system (100) fails.

3. The blast furnace charge dosing apparatus of claim 1, further comprising a control system provided with a plurality of charging programs configured to control the charging sequence of the coke charging system (100) and the ore charging system (200).

4. The blast furnace charge dosing apparatus according to any one of claims 1 to 3, further comprising an intermediate ore flap (49), said intermediate ore flap (49) being configured to connect the first conveyor main belt (41) or the second conveyor main belt (45) to the first intermediate hopper (35) or the second intermediate hopper (36).

5. The blast furnace charge dosing apparatus according to any one of claims 1-3, wherein the coke feeding system (100) further comprises a first coke-breaking belt (44) and a second coke-breaking belt (48), the first coke-breaking belt (44) being configured to convey the coke waste screened by the first coke bin (37), the second coke-breaking belt (48) being configured to convey the coke waste screened by the second coke bin (38).

6. The blast furnace charge dosing plant according to any one of claims 1 to 3, characterized in that said first coke bin (37) comprises a first discharge gate corresponding to said first coke hopper (39); the second coke bin (38) comprises a second discharge gate corresponding to the second coke weighing hopper (40).

7. A method for charging a blast furnace charge, characterized in that the blast furnace charge charging apparatus of any one of claims 1 to 6 is applied, comprising the steps of:

step S1, when the first coke feeding system (101) breaks down, forbidding the first coke feeding system (101), and controlling the system to change the feeding program;

step S2, emptying ore seeds in at least one sintering ore bin, conveying coke raw materials into the sintering ore bin by a blast furnace transfer station, conveying the coke raw materials to a corresponding ore weighing hopper (202) by the sintering ore bin, and weighing the required coke raw materials by the ore weighing hopper (202);

step S3, opening the ore weighing hopper (202), and enabling the weighed coke raw material to enter a first intermediate hopper (35) through a first conveying main belt (41) or a second conveying main belt (45);

and step S4, outputting the coke raw material to a first skip car (50) by the first intermediate hopper (35), and conveying the coke raw material to the blast furnace by the first skip car (50) to finish feeding the coke raw material.

8. The charge charging method according to claim 7, wherein in said step S2, there are two said sintering bins that are emptied.

9. The charge dosing method according to claim 7, wherein said step S2 further comprises said sintered ore bin vibrating screening said coke raw material.

10. The charge dosing method according to claim 7, characterized in that when the second coke feeding system (102) fails, said steps S1 and S2 are repeated, and after said step S2, the following steps are further included:

s301, opening the ore weighing hopper (202), and enabling the weighed coke raw material to enter a second intermediate hopper (36) through a first conveying main belt (41) or a second conveying main belt (45);

and S401, outputting the coke raw material to a second skip car (51) by the second intermediate hopper (36), and conveying the coke raw material to the blast furnace by the second skip car (51) to finish feeding the coke raw material.