WO2021179752A1 - Blast furnace-converter production system based on molten iron ladle crossing vehicle, and operation method for system - Google Patents

Blast furnace-converter production system based on molten iron ladle crossing vehicle, and operation method for system Download PDF

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Publication number
WO2021179752A1
WO2021179752A1 PCT/CN2020/140773 CN2020140773W WO2021179752A1 WO 2021179752 A1 WO2021179752 A1 WO 2021179752A1 CN 2020140773 W CN2020140773 W CN 2020140773W WO 2021179752 A1 WO2021179752 A1 WO 2021179752A1
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Prior art keywords
molten iron
scrap
steel
straddle
iron
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PCT/CN2020/140773
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French (fr)
Chinese (zh)
Inventor
袁晓峰
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中冶南方工程技术有限公司
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Publication of WO2021179752A1 publication Critical patent/WO2021179752A1/en

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
    • B22D41/01—Heating means
    • B22D41/015—Heating means with external heating, i.e. the heat source not being a part of the ladle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/12—Travelling ladles or similar containers; Cars for ladles
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/56—Manufacture of steel by other methods
    • C21C5/562—Manufacture of steel by other methods starting from scrap
    • C21C5/565—Preheating of scrap
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting
    • C22C33/06—Making ferrous alloys by melting using master alloys
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the invention belongs to the technical field of metallurgical equipment, and in particular relates to a blast furnace-converter production system based on a straddle car for molten iron tanks and an operating method thereof.
  • the blast furnace-converter process is a conventional process that uses iron ore to smelt into steel. Under the situation of increasingly tight energy, the importance of effective use of energy and reduction of environmental pollution has become increasingly prominent.
  • the use of scrap steel on the one hand, will greatly increase the utilization rate of scrap steel, on the other hand, it can save a lot of energy and reduce the emission of harmful substances. It is undoubtedly an important way to promote energy conservation and emission reduction in the steel industry.
  • measures to increase the scrap ratio in steelmaking plants include: adding scrap in the blast furnace, adding scrap in the tapping process (blast furnace tapping yard), adding scrap and preheating the molten iron tank, adding scrap and preheating the scrap tank, adding scrap and preheating after the furnace.
  • the invention relates to a blast furnace-converter production system based on a straddle car for an iron ladle and an operating method thereof, which can at least solve part of the defects of the prior art.
  • the invention relates to a blast furnace-converter production system based on a molten iron tank cross car, which includes an iron-making workshop, a steel-making workshop, a molten iron transportation track and a cross car walking on the molten iron transportation track, and also includes scrap stocking ingredients
  • the molten iron transportation track sequentially connects the iron-making workshop, the steel-making workshop, and the scrap storage and batching room in sequence, and the scrap storage and batching room is equipped with a scrap transfer unit for adding scrap steel into the molten iron tank .
  • the molten iron transportation track also has a scrap steel preheating node, and a preheating roaster is arranged at the scrap steel preheating node.
  • the scrap steel preheating node is located between the iron-making workshop and the steel-making workshop.
  • the preheating roaster includes a roasting chamber and a burning roasting mechanism provided in the roasting chamber, and the molten iron transport track passes through the roasting chamber.
  • the burning and roasting mechanism includes a roasting cover suitable for covering the mouth of the hot metal ladle and a cover driving mechanism for driving the roasting cover close to or away from the mouth of the hot metal ladle,
  • a burner is provided on the cover of the baking bag.
  • the cover driving mechanism includes a hoist and a transmission structure for raising and lowering the baking cover, and the hoist is arranged on the top of the baking chamber.
  • the scrap transfer unit includes a scrap steel disk crane, and the movement stroke of the scrap steel disk crane at least covers the scrap storage and batching room and the scrap adding node of the molten iron transportation track.
  • the present invention also relates to the operating method of the blast furnace-converter production system based on the straddle car as described above, which includes the following steps:
  • Step 1 Pass the straddle to receive the molten iron from the ironmaking workshop and then run it to the steelmaking workshop, and use the lifting equipment in the steelmaking workshop to lift the molten iron tank to the converter for iron exchange;
  • Step 2 After the iron is added, the empty iron water tank is returned to the cross car.
  • Step 3 Pass the straddle car and continue to run along the molten iron transportation track to the scrap adding node, and add the scrap in the scrap storage batching room to the empty molten iron tank through the scrap transfer unit;
  • Step four walk across the straddle to the ironmaking workshop and wait for the next tapping.
  • step 4 the scrap steel in the molten iron tank is first preheated, and then the straddle carriage is driven to the ironmaking workshop.
  • a separate storage and batching room for scrap steel is set up, and the scrap steel is added to the empty iron water tank through the scrap transfer unit.
  • the work of the scrap transfer unit does not interfere with the work of the crane and other equipment in the steelmaking workshop , So as to improve the speed and efficiency of scrap steel adding without affecting the existing converter production operations.
  • the scrap storage and batching room is arranged after the steelmaking workshop, which requires less space and is compact without affecting the existing steelmaking workshop site layout.
  • Fig. 1 is a schematic diagram of the plan layout of a blast furnace-converter production system based on a straddle car for an iron ladle according to an embodiment of the present invention
  • Fig. 2 is a schematic structural diagram of a preheated roaster provided by an embodiment of the present invention.
  • an embodiment of the present invention provides a blast furnace-converter production system based on a straddle car for molten iron tanks, including an iron-making workshop 1, a steel-making workshop 5, a molten iron transportation track 2, and a molten iron transportation track 2 walking on the molten iron transportation track 2.
  • a straddle car 3 Over the straddle car 3, it also includes a scrap storage and batching room 6.
  • the molten iron transportation track 2 is connected in series with the iron-making workshop 1, the steel-making workshop 5, and the scrap storage and batching room 6 in sequence.
  • the storage room 6 is equipped with a scrap steel transfer unit 7 for adding scrap steel into the molten iron tank 4.
  • One or more molten iron tanks 4 are placed on the straddle carriage 3, and the molten iron cans 4 follow the straddle carriage 3 to receive molten iron in the ironmaking workshop 1, and then follow the straddle carriage 3 to the steelmaking workshop 5 for the next step of smelting.
  • the above-mentioned ironmaking workshop 1 is generally a blast furnace ironmaking workshop 1
  • the above-mentioned steelmaking workshop 5 is generally a converter steelmaking workshop 5, but it is not limited to such a process flow, and will not be listed in this embodiment.
  • the above-mentioned straddle car 3 is used as molten iron transfer equipment, which is equipped with power equipment and can self-drive in both directions on the molten iron transportation track 2.
  • the straddle car 3 is designed to adopt a dual-drive configuration.
  • the power supply mode of the straddle car 3 is preferably a torque type cable reel, which is installed on the car.
  • the above-mentioned molten iron transportation track 2 can be set in multiple to meet the demand of continuous production, and coordinate the production pace between the iron-making workshop 1 and the steel-making workshop 5.
  • the aforementioned scrap storage and batching room 6 is used to store scrap steel, and it is preferably arranged adjacent to the steelmaking workshop 5 so as to share the scrap steel conveying channel and the scrap steel disposal equipment with the steelmaking workshop 5. Further preferably, there are two groups of the aforementioned scrap steel stocking and batching rooms 6, and the two groups of scrap steel stocking and batching rooms 6 are distributed on both sides of the molten iron transportation track 2.
  • the iron ladle 4 on the straddle car 3 is equipped with scrap steel; in an alternative embodiment, the above two sets of scrap storage and batching rooms 6 can store different types of scrap steel, for example, one of the scrap storage and batching rooms 6 is used for stacking For storage of relatively flexible scrap steel (such as light and thin materials), another scrap storage batching room 6 is used to store large pieces of scrap steel.
  • relatively flexible scrap steel such as light and thin materials
  • another scrap storage batching room 6 is used to store large pieces of scrap steel.
  • the above-mentioned scrap transfer unit 7 may adopt a scrap steel disk crane, and the movement stroke of the scrap steel disk crane at least covers the scrap storage and batching room 6 and the scrap adding node of the molten iron transportation track 2;
  • each group of steel scrap storage and batching rooms 6 is separately equipped with a scrap steel disk crane to facilitate independent control of the two groups of scrap steel storage and batching rooms 6.
  • a separate scrap storage and batching room 6 is set up, and the scrap steel is added to the empty iron water tank 4 through the scrap transfer unit 7.
  • the work of the scrap transfer unit 7 is not the same as that of the steelmaking workshop 5. Interference in the work of vehicles and other equipment, so as to improve the speed and efficiency of scrap adding without affecting the existing converter production operations.
  • the scrap storage and batching room 6 is arranged after the steelmaking workshop 5, which requires less space and is compact without affecting the existing steelmaking workshop. 5 Site layout.
  • the scrap storage and batching room 6 can be arranged next to the steelmaking workshop 5. When the scrap is added, the residual temperature in the molten iron tank 4 is still high, and the residual heat of the molten iron tank 4 can be fully utilized to preheat the scrap and save energy consumption.
  • the molten iron transportation track 2 also has a scrap preheating node, and a preheating roaster is arranged at the scrap preheating node.
  • the preheating roaster is used to heat the scrap steel before receiving iron, and the amount of scrap steel added can be increased by supplementing the heat source; the preheating roaster is arranged online on the molten iron transportation track 2 without additional cranes, the process flow is reasonable, and the equipment The investment is small.
  • the scrap preheating node is located between the ironmaking workshop 1 and the steelmaking workshop 5. The scrap preheating node can be further close to the ironmaking workshop 1 to avoid crossing the straddle car 3 The temperature drop of the scrap steel was too large when running to the ironmaking workshop 1.
  • the above-mentioned preheating roaster includes a roasting chamber 81 and a burning roasting mechanism provided in the roasting chamber 81, and the molten iron transport rail 2 passes through the roasting chamber 81 Room 81.
  • the baking chamber 81 may be a steel structure, such as a portal steel frame, which is convenient for passing the straddle carriage 3 and the molten iron tank 4 through.
  • the above-mentioned burning and roasting mechanism includes a roasting cover 82 suitable for covering on the mouth of the hot metal ladle and a cover driving mechanism for driving the roasting cover 82 to be close to or away from the mouth of the hot metal.
  • a burner is provided on the baking bag cover 82, and the burner may be a burner provided at the bottom of the baking bag cover 82, which heats the scrap steel in the iron ladle 4 by generating a high-temperature flame in the iron ladle 4.
  • the above-mentioned cover driving mechanism can drive the roasting cover 82 up and down, so that the roasting cover 82 is closed on or away from the mouth of the molten iron tank.
  • the cover driving mechanism includes a hoist 83 and a
  • the hoisting machine 83 is arranged on the top of the baking chamber 81; of course, it is not limited to the above-mentioned lifting drive mode, nor is it limited to the above-mentioned cover movement mode
  • the baking bag cover 82 can be driven to rotate, etc., which will not be described in detail here.
  • the embodiment of the present invention also relates to the operation method of the above-mentioned blast furnace-converter production system, which includes the following steps:
  • Step 1 Pass the straddle car 3 to receive the molten iron from the ironmaking workshop 1 and then run to the steelmaking workshop 5.
  • the iron ladle 4 is lifted to the converter by the lifting equipment in the steelmaking workshop 5 for iron exchange.
  • the charging straddle crane can be used Perform iron exchange operations;
  • Step 2 After the iron is added, the empty iron water tank 4 is returned to the straddle car 3.
  • Step 3 The straddle car 3 continues to run along the molten iron transportation track 2 to the scrap adding node, and the scrap steel in the scrap storage and batching room 6 is added to the empty molten iron tank 4 through the scrap transfer unit 7;
  • Step four walk across the straddle car 3 to the ironmaking workshop 1 to wait for the next tapping.
  • step 4 the scrap steel in the molten iron tank 4 is preheated first, and then the straddle carriage 3 is driven to the ironmaking workshop 1.
  • the tapping platforms of the two blast furnaces are centrally arranged, and each blast furnace has two taps.
  • the two blast furnaces are connected to the converter steelmaking workshop 5 and the scrap storage and batching room 6 through 8 molten iron transportation tracks 2 under the swing chute of each taphole.
  • the amount of scrap steel added in each hot metal tank 4 is about 8-15t. If one blast furnace taps 40 cans per day, the average amount of scrap added per time is 12t, so one blast furnace can add 480 tons of scrap per day through this method; two blast furnaces can add 336,000 tons of scrap per year.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

Disclosed are a blast furnace-converter production system based on a molten iron ladle crossing vehicle (3), and an operation method for the system. The system comprises an iron-making workshop (1), a steel-making workshop (5), a molten iron transportation rail (2), and the crossing vehicle (3), which travels on the molten iron transportation rail (2). The system further comprises a scrap steel stockpiling and batching room (6). The molten iron transportation rail (2) sequentially connects the iron making workshop (1), the steel making workshop (5) and the scrap steel stockpiling and batching room (6) in series, and the scrap steel stockpiling and batching room (6) is provided with a scrap steel transfer unit (7) for adding scrap steel into a molten iron ladle (4). The scrap steel stockpiling and batching room (6) is independently arranged, and the work of the scrap steel transfer unit (7) does not interfere with the work of apparatuses of the steel making workshop (5) such as an overhead travelling crane, such that a scrap steel addition speed and efficiency are improved under the condition that the production operation of an existing converter is not affected; and on the basis of a running feature whereby the crossing vehicle (3) can travel in two directions without traction of a machine head, the scrap steel stockpiling and batching room (6) is arranged behind the steel making workshop (5), the space needed is small, the layout is compact, and the site arrangement of the existing steel making workshop (5) is not affected.

Description

基于铁水罐过跨车的高炉-转炉生产***及其运行方法Blast furnace-converter production system and operating method based on molten iron tank passing straddle car 技术领域Technical field
本发明属于冶金设备技术领域，具体涉及一种基于铁水罐过跨车的高炉-转炉生产***及其运行方法。The invention belongs to the technical field of metallurgical equipment, and in particular relates to a blast furnace-converter production system based on a straddle car for molten iron tanks and an operating method thereof.
背景技术Background technique
高炉-转炉工艺是利用铁矿石而冶炼为钢的常规工艺流程，在能源日益紧张的情况下，有效利用能源、减少环境污染的重要性日益凸显，如果能在高炉-转炉流程中更多地利用废钢，一方面会使得废钢的利用率得到大幅度的提升，另一方面可以节省大量能源和减少有害物质的排放，无疑是推进钢铁业节能减排的重要途径。目前提高炼钢厂废钢比的措施有：高炉增加废钢，出铁过程中加废钢(高炉出铁场)、铁水罐加废钢及预热、废钢槽加废钢及预热、炉后加废钢及预热等，其中在铁水罐中加入废钢是一种简单高效的加入方式，投资低，效率高，同时可以充分使用高温铁水的热量来熔化废钢。这种向铁水罐中加入废钢的操作一般在炼钢车间兑铁完毕之后就地加入，因而会与炼钢车间的天车等设备工作发生干涉，存在影响转炉生产作业的情况。The blast furnace-converter process is a conventional process that uses iron ore to smelt into steel. Under the situation of increasingly tight energy, the importance of effective use of energy and reduction of environmental pollution has become increasingly prominent. The use of scrap steel, on the one hand, will greatly increase the utilization rate of scrap steel, on the other hand, it can save a lot of energy and reduce the emission of harmful substances. It is undoubtedly an important way to promote energy conservation and emission reduction in the steel industry. At present, measures to increase the scrap ratio in steelmaking plants include: adding scrap in the blast furnace, adding scrap in the tapping process (blast furnace tapping yard), adding scrap and preheating the molten iron tank, adding scrap and preheating the scrap tank, adding scrap and preheating after the furnace. Heat, etc., adding scrap steel into the molten iron tank is a simple and efficient way of adding, with low investment and high efficiency. At the same time, the heat of high-temperature molten iron can be fully used to melt the scrap. This operation of adding scrap steel to the molten iron tank is generally added on-site after the iron is poured in the steelmaking workshop, which will interfere with the work of the crane and other equipment in the steelmaking workshop, which may affect the production operation of the converter.
发明内容Summary of the invention
本发明涉及一种基于铁水罐过跨车的高炉-转炉生产***及其运行方法，至少可解决现有技术的部分缺陷。The invention relates to a blast furnace-converter production system based on a straddle car for an iron ladle and an operating method thereof, which can at least solve part of the defects of the prior art.
本发明涉及一种基于铁水罐过跨车的高炉-转炉生产***，包括炼铁车间、炼钢车间、铁水运输轨道以及行走于所述铁水运输轨道上的过跨车，还包括废钢堆存配料间，所述铁水运输轨道依次串接所述炼铁车间、所述炼钢车间和所述废钢堆存配料间，所述废钢堆存配料间配置有用于将废钢加入铁水罐内的废 钢转运单元。The invention relates to a blast furnace-converter production system based on a molten iron tank cross car, which includes an iron-making workshop, a steel-making workshop, a molten iron transportation track and a cross car walking on the molten iron transportation track, and also includes scrap stocking ingredients Between, the molten iron transportation track sequentially connects the iron-making workshop, the steel-making workshop, and the scrap storage and batching room in sequence, and the scrap storage and batching room is equipped with a scrap transfer unit for adding scrap steel into the molten iron tank .
作为实施方式之一，所述铁水运输轨道还具有废钢预热节点，于所述废钢预热节点处布置有预热烘烤器。As one of the embodiments, the molten iron transportation track also has a scrap steel preheating node, and a preheating roaster is arranged at the scrap steel preheating node.
作为实施方式之一，所述废钢预热节点位于所述炼铁车间与所述炼钢车间之间。As one of the embodiments, the scrap steel preheating node is located between the iron-making workshop and the steel-making workshop.
作为实施方式之一，所述预热烘烤器包括烘烤室以及设于所述烘烤室内的燃烧烘烤机构，所述铁水运输轨道穿过所述烘烤室。As one of the embodiments, the preheating roaster includes a roasting chamber and a burning roasting mechanism provided in the roasting chamber, and the molten iron transport track passes through the roasting chamber.
作为实施方式之一，所述燃烧烘烤机构包括适于盖合于铁水罐罐口上的烘烤包盖以及用于驱使所述烘烤包盖靠近或远离铁水罐罐口的包盖驱动机构，所述烘烤包盖上设有燃烧器。As one of the embodiments, the burning and roasting mechanism includes a roasting cover suitable for covering the mouth of the hot metal ladle and a cover driving mechanism for driving the roasting cover close to or away from the mouth of the hot metal ladle, A burner is provided on the cover of the baking bag.
作为实施方式之一，所述包盖驱动机构包括卷扬机和用于使所述烘烤包盖升降的传动结构，所述卷扬机布置于所述烘烤室的顶部。As one of the embodiments, the cover driving mechanism includes a hoist and a transmission structure for raising and lowering the baking cover, and the hoist is arranged on the top of the baking chamber.
作为实施方式之一，所述废钢堆存配料间有两组，两组废钢堆存配料间分布于所述铁水运输轨道两侧。As one of the implementation manners, there are two groups of the steel scrap storage and batching rooms, and the two groups of steel scrap storage and batching rooms are distributed on both sides of the molten iron transportation track.
作为实施方式之一，所述废钢转运单元包括废钢磁盘吊车，所述废钢磁盘吊车的运动行程至少覆盖所述废钢堆存配料间和所述铁水运输轨道的加废钢节点。As one of the embodiments, the scrap transfer unit includes a scrap steel disk crane, and the movement stroke of the scrap steel disk crane at least covers the scrap storage and batching room and the scrap adding node of the molten iron transportation track.
本发明还涉及如上所述的基于铁水罐过跨车的高炉-转炉生产***的运行方法，包括如下步骤：The present invention also relates to the operating method of the blast furnace-converter production system based on the straddle car as described above, which includes the following steps:
步骤一，过跨车从炼铁车间接收铁水后运行至炼钢车间，通过炼钢车间内的起重设备将铁水罐吊运至转炉进行兑铁；Step 1: Pass the straddle to receive the molten iron from the ironmaking workshop and then run it to the steelmaking workshop, and use the lifting equipment in the steelmaking workshop to lift the molten iron tank to the converter for iron exchange;
步骤二，兑铁完毕后，使空铁水罐返回至过跨车上。Step 2: After the iron is added, the empty iron water tank is returned to the cross car.
步骤三，过跨车沿铁水运输轨道继续运行至加废钢节点，通过废钢转运单 元将废钢堆存配料间内的废钢加入到空铁水罐内；Step 3: Pass the straddle car and continue to run along the molten iron transportation track to the scrap adding node, and add the scrap in the scrap storage batching room to the empty molten iron tank through the scrap transfer unit;
步骤四，过跨车走行至炼铁车间等待下一次出铁。Step four, walk across the straddle to the ironmaking workshop and wait for the next tapping.
作为实施方式之一，步骤四中，先对铁水罐内废钢进行预热后再使过跨车走行至炼铁车间。As one of the implementation manners, in step 4, the scrap steel in the molten iron tank is first preheated, and then the straddle carriage is driven to the ironmaking workshop.
本发明至少具有如下有益效果：The present invention has at least the following beneficial effects:
本发明提供的高炉-转炉生产***，单独设置废钢堆存配料间，通过废钢转运单元将废钢加入到空铁水罐内，废钢转运单元的工作并不与炼钢车间的天车等设备工作发生干涉，从而在不影响现有转炉生产作业的情况下提高废钢加入速度和效率。基于过跨车无需机头牵引而可双向行走的运行特性，将废钢堆存配料间布置于炼钢车间之后，所需空间较小，布局紧凑而又不影响现有的炼钢车间场地布置。In the blast furnace-converter production system provided by the present invention, a separate storage and batching room for scrap steel is set up, and the scrap steel is added to the empty iron water tank through the scrap transfer unit. The work of the scrap transfer unit does not interfere with the work of the crane and other equipment in the steelmaking workshop , So as to improve the speed and efficiency of scrap steel adding without affecting the existing converter production operations. Based on the operating characteristics of the over-straddle vehicle that can travel in both directions without the need for nose traction, the scrap storage and batching room is arranged after the steelmaking workshop, which requires less space and is compact without affecting the existing steelmaking workshop site layout.
附图说明Description of the drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.
图1为本发明实施例提供的基于铁水罐过跨车的高炉-转炉生产***的平面布置示意图；Fig. 1 is a schematic diagram of the plan layout of a blast furnace-converter production system based on a straddle car for an iron ladle according to an embodiment of the present invention;
图2为本发明实施例提供的预热烘烤器的结构示意图。Fig. 2 is a schematic structural diagram of a preheated roaster provided by an embodiment of the present invention.
具体实施方式Detailed ways
下面对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它 实施例，都属于本发明保护的范围。The following describes the technical solutions in the embodiments of the present invention clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
如图1，本发明实施例提供一种基于铁水罐过跨车的高炉-转炉生产***，包括炼铁车间1、炼钢车间5、铁水运输轨道2以及行走于所述铁水运输轨道2上的过跨车3，还包括废钢堆存配料间6，所述铁水运输轨道2依次串接所述炼铁车间1、所述炼钢车间5和所述废钢堆存配料间6，所述废钢堆存配料间6配置有用于将废钢加入铁水罐4内的废钢转运单元7。As shown in Fig. 1, an embodiment of the present invention provides a blast furnace-converter production system based on a straddle car for molten iron tanks, including an iron-making workshop 1, a steel-making workshop 5, a molten iron transportation track 2, and a molten iron transportation track 2 walking on the molten iron transportation track 2. Over the straddle car 3, it also includes a scrap storage and batching room 6. The molten iron transportation track 2 is connected in series with the iron-making workshop 1, the steel-making workshop 5, and the scrap storage and batching room 6 in sequence. The storage room 6 is equipped with a scrap steel transfer unit 7 for adding scrap steel into the molten iron tank 4.
过跨车3上安放一个或多个铁水罐4，铁水罐4随过跨车3在炼铁车间1承接铁水，并进一步随过跨车3运行至炼钢车间5进行下一步冶炼。上述炼铁车间1一般为高炉炼铁车间1，上述炼钢车间5一般为转炉炼钢车间5，但并不限于此种工艺流程，本实施例中不作一一例举。上述过跨车3作为铁水转运设备，其配置有动力设备，能在铁水运输轨道2上双向自驱动行走，本实施例中，其由电机经减速器联轴器带动车轮传递扭矩，其优选采用变频调速驱动方式；进一步优选地，该过跨车3设计采用双驱配置，当其中一组驱动装置失效时，另一组驱动装置仍能低速带动完成1个工作周期，安全可靠；另外，该过跨车3供电方式优选为是力矩式电缆卷筒，安装在车上。One or more molten iron tanks 4 are placed on the straddle carriage 3, and the molten iron cans 4 follow the straddle carriage 3 to receive molten iron in the ironmaking workshop 1, and then follow the straddle carriage 3 to the steelmaking workshop 5 for the next step of smelting. The above-mentioned ironmaking workshop 1 is generally a blast furnace ironmaking workshop 1, and the above-mentioned steelmaking workshop 5 is generally a converter steelmaking workshop 5, but it is not limited to such a process flow, and will not be listed in this embodiment. The above-mentioned straddle car 3 is used as molten iron transfer equipment, which is equipped with power equipment and can self-drive in both directions on the molten iron transportation track 2. In this embodiment, it is driven by a motor through a reducer coupling to transmit torque to the wheels, which is preferably adopted Frequency conversion speed regulation driving mode; further preferably, the straddle car 3 is designed to adopt a dual-drive configuration. When one of the driving devices fails, the other group of driving devices can still drive at a low speed to complete a working cycle, which is safe and reliable; in addition, The power supply mode of the straddle car 3 is preferably a torque type cable reel, which is installed on the car.
如图1，上述铁水运输轨道2可设置为多条，以满足持续生产的需求，并协调炼铁车间1与炼钢车间5之间的生产步调。As shown in Fig. 1, the above-mentioned molten iron transportation track 2 can be set in multiple to meet the demand of continuous production, and coordinate the production pace between the iron-making workshop 1 and the steel-making workshop 5.
上述废钢堆存配料间6用于堆存废钢，其优选相邻于炼钢车间5布置，以便于与炼钢车间5共用废钢输送通道及废钢处置设备。进一步优选地，上述废钢堆存配料间6有两组，两组废钢堆存配料间6分布于铁水运输轨道2两侧，该方案尤其适用于有多条铁水输送轨道的情况，能为不同的过跨车3上的铁水罐4配加废钢；在可选的实施例中，上述两组废钢堆存配料间6可堆存不同种类的废钢，例如其中一废钢堆存配料间6用于堆存柔性相对较大的废钢(例如 轻薄料)，另一废钢堆存配料间6用于堆存大块废钢，在配加废钢时，可先向铁水罐4中加入柔性废钢，再加入大块废钢，可有效地缓解废钢块对铁水罐4底部的冲击。上述废钢转运单元7可采用废钢磁盘吊车，所述废钢磁盘吊车的运动行程至少覆盖所述废钢堆存配料间6和所述铁水运输轨道2的加废钢节点；在上述具有两组废钢堆存配料间6的结构中，优选为每组废钢堆存配料间6单独配置有一台废钢磁盘吊车，便于两组废钢堆存配料间6的独立控制。The aforementioned scrap storage and batching room 6 is used to store scrap steel, and it is preferably arranged adjacent to the steelmaking workshop 5 so as to share the scrap steel conveying channel and the scrap steel disposal equipment with the steelmaking workshop 5. Further preferably, there are two groups of the aforementioned scrap steel stocking and batching rooms 6, and the two groups of scrap steel stocking and batching rooms 6 are distributed on both sides of the molten iron transportation track 2. The iron ladle 4 on the straddle car 3 is equipped with scrap steel; in an alternative embodiment, the above two sets of scrap storage and batching rooms 6 can store different types of scrap steel, for example, one of the scrap storage and batching rooms 6 is used for stacking For storage of relatively flexible scrap steel (such as light and thin materials), another scrap storage batching room 6 is used to store large pieces of scrap steel. When adding scrap steel, you can first add flexible scrap steel to the molten iron tank 4, and then add large pieces Scrap steel can effectively alleviate the impact of the scrap steel block on the bottom of the molten iron tank 4. The above-mentioned scrap transfer unit 7 may adopt a scrap steel disk crane, and the movement stroke of the scrap steel disk crane at least covers the scrap storage and batching room 6 and the scrap adding node of the molten iron transportation track 2; In the structure of the room 6, it is preferable that each group of steel scrap storage and batching rooms 6 is separately equipped with a scrap steel disk crane to facilitate independent control of the two groups of scrap steel storage and batching rooms 6.
本实施例提供的高炉-转炉生产***，单独设置废钢堆存配料间6，通过废钢转运单元7将废钢加入到空铁水罐4内，废钢转运单元7的工作并不与炼钢车间5的天车等设备工作发生干涉，从而在不影响现有转炉生产作业的情况下提高废钢加入速度和效率。基于过跨车3无需机头牵引而可双向行走的运行特性，将废钢堆存配料间6布置于炼钢车间5之后，所需空间较小，布局紧凑而又不影响现有的炼钢车间5场地布置。而且，废钢堆存配料间6可以紧邻炼钢车间5布置，废钢加入时铁水罐4内余温尚高，可充分地利用铁水罐4余热对废钢进行预热，节约能耗。In the blast furnace-converter production system provided in this embodiment, a separate scrap storage and batching room 6 is set up, and the scrap steel is added to the empty iron water tank 4 through the scrap transfer unit 7. The work of the scrap transfer unit 7 is not the same as that of the steelmaking workshop 5. Interference in the work of vehicles and other equipment, so as to improve the speed and efficiency of scrap adding without affecting the existing converter production operations. Based on the operating characteristics of the crosscar 3 that can travel in both directions without the need for nose traction, the scrap storage and batching room 6 is arranged after the steelmaking workshop 5, which requires less space and is compact without affecting the existing steelmaking workshop. 5 Site layout. Moreover, the scrap storage and batching room 6 can be arranged next to the steelmaking workshop 5. When the scrap is added, the residual temperature in the molten iron tank 4 is still high, and the residual heat of the molten iron tank 4 can be fully utilized to preheat the scrap and save energy consumption.
进一步优化上述高炉-转炉生产***，如图1，所述铁水运输轨道2还具有废钢预热节点，于所述废钢预热节点处布置有预热烘烤器。利用预热烘烤器将废钢加热后再进行受铁，通过补充热源可以提高废钢加入量；将预热烘烤器在线布置在铁水运输轨道2上，不需要额外设置起重机，工艺流程合理，设备投资小。进一步优选地，如图1，所述废钢预热节点位于所述炼铁车间1与所述炼钢车间5之间，该废钢预热节点可进一步靠近炼铁车间1，可避免过跨车3运行至炼铁车间1时废钢的温降过大。To further optimize the above-mentioned blast furnace-converter production system, as shown in Fig. 1, the molten iron transportation track 2 also has a scrap preheating node, and a preheating roaster is arranged at the scrap preheating node. The preheating roaster is used to heat the scrap steel before receiving iron, and the amount of scrap steel added can be increased by supplementing the heat source; the preheating roaster is arranged online on the molten iron transportation track 2 without additional cranes, the process flow is reasonable, and the equipment The investment is small. Further preferably, as shown in Fig. 1, the scrap preheating node is located between the ironmaking workshop 1 and the steelmaking workshop 5. The scrap preheating node can be further close to the ironmaking workshop 1 to avoid crossing the straddle car 3 The temperature drop of the scrap steel was too large when running to the ironmaking workshop 1.
在其中一个实施例中，如图2，上述预热烘烤器包括烘烤室81以及设于所述烘烤室81内的燃烧烘烤机构，所述铁水运输轨道2穿过所述烘烤室81。该烘 烤室81可为钢结构，例如为门式钢框架，便于过跨车3及铁水罐4通过即可。作为优选，上述燃烧烘烤机构包括适于盖合于铁水罐罐口上的烘烤包盖82以及用于驱使所述烘烤包盖82靠近或远离铁水罐罐口的包盖驱动机构，所述烘烤包盖82上设有燃烧器，该燃烧器可以是设置在烘烤包盖82底部的烧嘴，通过在铁水罐4内产生高温火焰对铁水罐4内的废钢进行加热。其中，上述包盖驱动机构可以驱使烘烤包盖82升降，以使得烘烤包盖82盖合在铁水罐罐口上或者离开该铁水罐罐口，例如，该包盖驱动机构包括卷扬机83和用于使所述烘烤包盖82升降的传动结构84，所述卷扬机83布置于所述烘烤室81的顶部；当然并不限于上述的升降驱动方式，也并不限于上述的包盖运动方式，例如可驱使该烘烤包盖82旋转等，此处不作一一详述。In one of the embodiments, as shown in FIG. 2, the above-mentioned preheating roaster includes a roasting chamber 81 and a burning roasting mechanism provided in the roasting chamber 81, and the molten iron transport rail 2 passes through the roasting chamber 81 Room 81. The baking chamber 81 may be a steel structure, such as a portal steel frame, which is convenient for passing the straddle carriage 3 and the molten iron tank 4 through. Preferably, the above-mentioned burning and roasting mechanism includes a roasting cover 82 suitable for covering on the mouth of the hot metal ladle and a cover driving mechanism for driving the roasting cover 82 to be close to or away from the mouth of the hot metal. A burner is provided on the baking bag cover 82, and the burner may be a burner provided at the bottom of the baking bag cover 82, which heats the scrap steel in the iron ladle 4 by generating a high-temperature flame in the iron ladle 4. Wherein, the above-mentioned cover driving mechanism can drive the roasting cover 82 up and down, so that the roasting cover 82 is closed on or away from the mouth of the molten iron tank. For example, the cover driving mechanism includes a hoist 83 and a For the transmission structure 84 for lifting and lowering the baking bag cover 82, the hoisting machine 83 is arranged on the top of the baking chamber 81; of course, it is not limited to the above-mentioned lifting drive mode, nor is it limited to the above-mentioned cover movement mode For example, the baking bag cover 82 can be driven to rotate, etc., which will not be described in detail here.
本发明实施例还涉及上述高炉-转炉生产***的运行方法，包括如下步骤：The embodiment of the present invention also relates to the operation method of the above-mentioned blast furnace-converter production system, which includes the following steps:
步骤一，过跨车3从炼铁车间1接收铁水后运行至炼钢车间5，通过炼钢车间5内的起重设备将铁水罐4吊运至转炉进行兑铁，一般可通过加料跨起重机进行兑铁操作；Step 1: Pass the straddle car 3 to receive the molten iron from the ironmaking workshop 1 and then run to the steelmaking workshop 5. The iron ladle 4 is lifted to the converter by the lifting equipment in the steelmaking workshop 5 for iron exchange. Generally, the charging straddle crane can be used Perform iron exchange operations;
步骤二，兑铁完毕后，使空铁水罐4返回至过跨车3上。Step 2: After the iron is added, the empty iron water tank 4 is returned to the straddle car 3.
步骤三，过跨车3沿铁水运输轨道2继续运行至加废钢节点，通过废钢转运单元7将废钢堆存配料间6内的废钢加入到空铁水罐4内；Step 3: The straddle car 3 continues to run along the molten iron transportation track 2 to the scrap adding node, and the scrap steel in the scrap storage and batching room 6 is added to the empty molten iron tank 4 through the scrap transfer unit 7;
步骤四，过跨车3走行至炼铁车间1等待下一次出铁。Step four, walk across the straddle car 3 to the ironmaking workshop 1 to wait for the next tapping.
在上述设置有废钢预热节点的结构中，进一步地，步骤四中，先对铁水罐4内废钢进行预热后再使过跨车3走行至炼铁车间1。In the above-mentioned structure with scrap steel preheating nodes, further, in step 4, the scrap steel in the molten iron tank 4 is preheated first, and then the straddle carriage 3 is driven to the ironmaking workshop 1.
以炼铁车间1设有两座1860立方炉容的高炉、炼钢车间5设有两座150t转炉的***为例，两座高炉的出铁场平台集中布置，每座高炉有2个出铁口，其中每个出铁口的摆动溜槽下方对应2条铁水运输轨道2；两座高炉通过8条铁 水运输轨道2与转炉炼钢车间5和废钢堆存配料间6连通。每个铁水罐4中的废钢加入量约为8～15t。以1座高炉每天出铁40罐计算，平均每次废钢加入量为12t，则1座高炉通过此方式可以每天加入废钢480t；两座高炉一年可以加入废钢33.6万t。在钢水总产量不变的前提下，相当于高炉铁水减少生产33.6万t，以吨铁产生1.18t二氧化碳计算，每年至少可以减少二氧化碳排放量39.65万t。Take the ironmaking workshop 1 with two blast furnaces with a furnace capacity of 1860 cubic meters and the steelmaking workshop 5 with two 150t converter systems as an example. The tapping platforms of the two blast furnaces are centrally arranged, and each blast furnace has two taps. The two blast furnaces are connected to the converter steelmaking workshop 5 and the scrap storage and batching room 6 through 8 molten iron transportation tracks 2 under the swing chute of each taphole. The amount of scrap steel added in each hot metal tank 4 is about 8-15t. If one blast furnace taps 40 cans per day, the average amount of scrap added per time is 12t, so one blast furnace can add 480 tons of scrap per day through this method; two blast furnaces can add 336,000 tons of scrap per year. On the premise that the total output of molten steel remains unchanged, this is equivalent to a reduction of 336,000 tons of molten iron produced in a blast furnace. Based on the production of 1.18 tons of carbon dioxide per ton of iron, at least 396,500 tons of carbon dioxide emissions can be reduced each year.
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the present invention. Within the scope of protection.

Claims (10)

  1. 一种基于铁水罐过跨车的高炉-转炉生产***，包括炼铁车间、炼钢车间、铁水运输轨道以及行走于所述铁水运输轨道上的过跨车，其特征在于：还包括废钢堆存配料间，所述铁水运输轨道依次串接所述炼铁车间、所述炼钢车间和所述废钢堆存配料间，所述废钢堆存配料间配置有用于将废钢加入铁水罐内的废钢转运单元。A blast furnace-converter production system based on a molten iron tank crossing car, comprising an iron-making workshop, a steel-making workshop, a molten iron transportation track, and a cross car walking on the molten iron transportation track, and is characterized in that it also includes scrap steel storage In the batching room, the molten iron transportation track sequentially connects the iron-making workshop, the steel-making workshop and the scrap storage and batching room in series, and the scrap storage and batching room is equipped with a scrap transfer for adding scrap steel into the molten iron tank unit.
  2. 如权利要求1所述的基于铁水罐过跨车的高炉-转炉生产***，其特征在于：所述铁水运输轨道还具有废钢预热节点，于所述废钢预热节点处布置有预热烘烤器。The blast furnace-converter production system based on the straddle carriage of the molten iron tank according to claim 1, wherein the molten iron transportation track also has a scrap preheating node, and a preheating baking is arranged at the scrap preheating node. Device.
  3. 如权利要求2所述的基于铁水罐过跨车的高炉-转炉生产***，其特征在于：所述废钢预热节点位于所述炼铁车间与所述炼钢车间之间。The blast furnace-converter production system based on the straddle carriage of the molten iron as claimed in claim 2, wherein the scrap preheating node is located between the iron-making workshop and the steel-making workshop.
  4. 如权利要求2所述的基于铁水罐过跨车的高炉-转炉生产***，其特征在于：所述预热烘烤器包括烘烤室以及设于所述烘烤室内的燃烧烘烤机构，所述铁水运输轨道穿过所述烘烤室。The blast furnace-converter production system based on the straddle carriage of iron ladle according to claim 2, characterized in that: the preheating roaster includes a roasting chamber and a combustion roasting mechanism arranged in the roasting chamber, so The molten iron transportation track passes through the baking chamber.
  5. 如权利要求4所述的基于铁水罐过跨车的高炉-转炉生产***，其特征在于：所述燃烧烘烤机构包括适于盖合于铁水罐罐口上的烘烤包盖以及用于驱使所述烘烤包盖靠近或远离铁水罐罐口的包盖驱动机构，所述烘烤包盖上设有燃烧器。The blast furnace-converter production system based on the straddle carriage of the molten iron as claimed in claim 4, characterized in that: the burning and baking mechanism includes a baking cover suitable for covering the mouth of the molten iron can and for driving the The baking bag cover is close to or far away from the cover driving mechanism of the molten iron can mouth, and the baking bag cover is provided with a burner.
  6. 如权利要求5所述的基于铁水罐过跨车的高炉-转炉生产***，其特征在于：所述包盖驱动机构包括卷扬机和用于使所述烘烤包盖升降的传动结构，所述卷扬机布置于所述烘烤室的顶部。The blast furnace-converter production system based on the straddle car of the molten iron as claimed in claim 5, characterized in that: the cover driving mechanism includes a hoist and a transmission structure for raising and lowering the baking cover, and the hoist Arranged on the top of the baking chamber.
  7. 如权利要求1所述的基于铁水罐过跨车的高炉-转炉生产***，其特征在于：所述废钢堆存配料间有两组，两组废钢堆存配料间分布于所述铁水运输轨道两侧。The blast furnace-converter production system based on the straddle car for molten iron as claimed in claim 1, characterized in that there are two sets of said scrap storage and batching rooms, and the two sets of scrap storage and batching rooms are distributed in two of said molten iron transportation tracks. side.
  8. 如权利要求1所述的基于铁水罐过跨车的高炉-转炉生产***，其特征在于： 所述废钢转运单元包括废钢磁盘吊车，所述废钢磁盘吊车的运动行程至少覆盖所述废钢堆存配料间和所述铁水运输轨道的加废钢节点。The blast furnace-converter production system based on the straddle carrier of the molten iron tank according to claim 1, wherein: the scrap transfer unit includes a scrap steel disk crane, and the movement stroke of the scrap steel disk crane at least covers the scrap stocking ingredients And the scrap-adding node of the molten iron transportation track.
  9. 如权利要求1至8中任一项所述的基于铁水罐过跨车的高炉-转炉生产***的运行方法，其特征在于，包括如下步骤：The operating method of the blast furnace-converter production system based on the straddle carriage of the molten iron as claimed in any one of claims 1 to 8, characterized in that it comprises the following steps:
    步骤一，过跨车从炼铁车间接收铁水后运行至炼钢车间，通过炼钢车间内的起重设备将铁水罐吊运至转炉进行兑铁；Step 1: Pass the straddle car to receive the molten iron from the iron-making workshop and then run it to the steel-making workshop, and use the lifting equipment in the steel-making workshop to lift the molten iron tank to the converter for iron exchange;
    步骤二，兑铁完毕后，使空铁水罐返回至过跨车上。Step 2: After the iron is added, the empty iron water tank is returned to the cross car.
    步骤三，过跨车沿铁水运输轨道继续运行至加废钢节点，通过废钢转运单元将废钢堆存配料间内的废钢加入到空铁水罐内；Step 3: The straddle carriage continues to run along the molten iron transportation track to the scrap adding node, and the scrap steel in the scrap storage batching room is added to the empty molten iron tank through the scrap transfer unit;
    步骤四，过跨车走行至炼铁车间等待下一次出铁。Step four, walk across the straddle to the ironmaking workshop and wait for the next tapping.
  10. 如权利要求9所述的运行方法，其特征在于，步骤四中，先对铁水罐内废钢进行预热后再使过跨车走行至炼铁车间。9. The operation method according to claim 9, characterized in that, in step 4, the scrap steel in the molten iron tank is preheated first, and then the straddle carriage is driven to the ironmaking workshop.
PCT/CN2020/140773 2020-03-09 2020-12-29 Blast furnace-converter production system based on molten iron ladle crossing vehicle, and operation method for system WO2021179752A1 (en)

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