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WO2023231183A1 - Système de traitement de laitier projeté à chaud respectueux de l'environnement et son procédé d'utilisation - Google Patents

Système de traitement de laitier projeté à chaud respectueux de l'environnement et son procédé d'utilisation Download PDF

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Publication number
WO2023231183A1
WO2023231183A1 PCT/CN2022/112178 CN2022112178W WO2023231183A1 WO 2023231183 A1 WO2023231183 A1 WO 2023231183A1 CN 2022112178 W CN2022112178 W CN 2022112178W WO 2023231183 A1 WO2023231183 A1 WO 2023231183A1
Authority
WO
WIPO (PCT)
Prior art keywords
top cover
hot slag
air duct
treatment system
box
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2022/112178
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English (en)
Chinese (zh)
Inventor
陈建辉
袁晓峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wisdri Engineering and Research Incorporation Ltd
Original Assignee
Wisdri Engineering and Research Incorporation Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wisdri Engineering and Research Incorporation Ltd filed Critical Wisdri Engineering and Research Incorporation Ltd
Publication of WO2023231183A1 publication Critical patent/WO2023231183A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • C21B3/08—Cooling slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/066—Receptacle features where the slag is treated
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies

Definitions

  • the invention belongs to the technical field of metallurgical slag treatment, and specifically relates to an environmentally friendly hot slag treatment system and its use method.
  • the steel slag hot pouring process uses a crane to lift the slag tank and pour the slag into the open hot slag pouring box. After each tank of slag is poured, an appropriate amount of water is sprayed evenly to cool it, and then the second and third tanks of slag are poured in sequence with the same operation. After the slag box is full, a large amount of cooling water is sprayed intensively, and the high-temperature steel slag is rapidly cooled, broken and accelerated to cool. After the steel slag is cooled to below 100°C, use a loader to scoop up the steel slag and load it into a truck for transportation.
  • the present invention relates to an environmentally friendly hot slag treatment system and its use method, which can at least solve some of the defects of the prior art.
  • the invention relates to an environmentally friendly hot slag treatment system, which includes a hot slag box, a tilting top cover rotatably installed on the top of the hot slag box, and a tilting top cover for driving the tilting top cover relative to the top of the hot slag box.
  • the tilting and rotating top cover driving mechanism of the hot slag box is provided with a spray mechanism at the bottom of the tilting top cover.
  • the tilting top cover is provided with a dust extraction port and is connected to a dust extraction air duct.
  • the dust extraction air duct includes a fixed air duct and a movable air duct.
  • the movable air duct is installed on the tilting top cover, and one end of the movable air duct is connected to the dust extraction port. And the other end is connected to the fixed air duct through a rotary joint, and the fixed air duct is connected to an exhaust unit.
  • an electronically controlled valve is provided on the dust extraction air duct.
  • a dust removal mechanism is connected to the dust extraction air duct.
  • the dust removal mechanism includes a spray washing tower, a dehydrator and an induced draft fan connected in series.
  • the top cover driving mechanism includes a pulley mechanism, a hoisting rope and a hoisting machine.
  • the hoisting rope is connected to the hoisting machine and is connected to the tilting top cover after passing through the pulley mechanism.
  • the top cover driving mechanism further includes a support frame standing next to the hot slag dumping box. Some of the pulleys in the pulley mechanism are provided on the support frame.
  • the pulley mechanism also includes a support frame. The moving pulley on the tilting top cover.
  • the environmentally friendly hot slag treatment system also includes a side cover, which is movably disposed at the side opening of the hot slag box.
  • the side cover is mounted on the hot slag box, or the side cover is installed on the tilting top cover.
  • the present invention also relates to the use method of the environmentally friendly hot slag treatment system as mentioned above, including:
  • Hot slag bin When it is necessary to pour hot slag into the hot slag pouring box, the tilting top cover is turned upward to a certain angle, and the dust extraction air duct is used for exhausting. At this time, the hot slag is poured into the hot slag box. Hot slag bin;
  • the tilting top cover is lowered and closed on the tilting top cover.
  • the spray mechanism is put into use to pump water and cool down the hot slag, ensuring that during this process
  • the dust extraction air duct performs exhaust work continuously or intermittently.
  • the invention is equipped with a tilting top cover for a hot slag dumping box and integrates a spray mechanism and a dust extraction mechanism on the tilting top cover, which not only satisfies the function of pumping water into the hot slag dumping tank, but also prevents dust-laden steam. etc. can escape upward, and smoke, dust, steam, etc. can be extracted in time, which can achieve good dust removal effect and effectively improve the production and operating environment in the factory without affecting the process operation; due to the use of a tilting top cover, in addition to It can effectively collect dusty steam generated when steel slag is pumped with water.
  • When pouring slag into the hot slag pouring box turn the tilting top cover up to a certain angle and perform dust extraction. This can collect the smoke generated during the slag pouring process, thus It realizes dust removal in the whole process of steel slag treatment, has better environmental protection effect and better improves the production and operating environment of the factory.
  • the environmentally friendly hot slag treatment system provided by the invention has a simple structure, reasonable layout, and flexible operation, does not affect the original hot slag operation process, has low transformation difficulty, and is suitable for reconstruction or new steel slag hot slag projects.
  • Figure 1 is a schematic structural diagram of an environmentally friendly hot slag treatment system provided by an embodiment of the present invention.
  • the embodiment of the present invention provides an environmentally friendly hot slag treatment system, which includes a hot slag box 11, a tilting top cover 12 that is rotatably installed on the top of the hot slag box 11, and a driving device.
  • the tilting top cover 12 has a top cover driving mechanism that tilts and rotates relative to the hot slag dumping box 11.
  • the bottom of the tilting top cover 12 is provided with a spray mechanism.
  • the tilting top cover 12 is provided with a spray mechanism.
  • the above-mentioned hot slag dumping box 11 generally has an open top, and the above-mentioned tilting top cover 12 is suitable for opening and closing the top opening: when the top opening is closed, the tilting top cover 12 is closed on the hot slag dumping box.
  • the top of 11 can pump water into the hot slag box 11 and prevent dusty steam from escaping upward; when the top opening is opened, the tilting top cover 12 can be turned upward to facilitate the hot slag box 11 Pour hot slag inside.
  • the above-mentioned hot slag dumping box 11 generally has three side walls, that is, it has side openings.
  • the side openings generally face the working area of the workshop to facilitate slag cleaning equipment (such as crawler excavators, etc.) to enter the hot slag dumping box 11.
  • Steel slag is shoveled out.
  • the above-mentioned hot slag pouring box 11 is preferably a concrete structure.
  • the three side walls of the hot slag pouring box 11 are all reinforced concrete walls.
  • the tops of the three side walls are preferably set flush and horizontal; however, it is also an option to use an inclined top for the hot slag tank 11 .
  • the above-mentioned tilting top cover 12 includes a steel cover. It is further preferred to provide a high-temperature resistant anti-corrosion coating on its bottom surface, such as spraying high-temperature anti-corrosion paint, to resist the impact of high-temperature steam on the tilting top cover. 12 Corrosion.
  • the spray mechanism is integrated on the tilting top cover 12, which can simplify the equipment layout and ensure that spray cooling and dust extraction can be performed at the same time.
  • the spray mechanism includes multiple atomizing nozzles to provide atomized water to cool the hot slag, which can improve the cooling effect and reduce water consumption; preferably, the spray angle of the atomizing nozzles is 90 to 120 °.
  • the above-mentioned spray mechanism also includes a water supply pipe, and each atomizing nozzle is connected to the water supply pipe; the water supply pipe can be arranged on the upper surface of the tilting top cover 12, or can also be arranged on the cover of the tilting top cover 12.
  • the tilting top cover 12 can adopt a hollow structure, which not only facilitates the arrangement of water supply pipes, but also reduces its own weight and reduces the energy consumption of the top cover tilting.
  • the above-mentioned water supply pipe is connected to a ground water supply pipeline, and an automatic water supply valve station is provided on the ground water supply pipeline.
  • the automatic water supply valve station includes a manual stop valve, a quick cut-off valve, and a manual stop valve that are arranged sequentially along the water supply direction.
  • Flow regulating valve and electromagnetic flow meter; the above-mentioned ground water supply pipeline is preferably connected to the above-mentioned water supply pipe through a metal hose.
  • the dust extraction air duct 2 includes a fixed air duct 21 and a movable air duct 22.
  • the movable air duct 22 is installed on the tilting top cover 12.
  • One end of the air duct 22 is connected to the dust extraction port and the other end is connected to the fixed air duct 21 through a rotary joint.
  • the fixed air duct 21 is connected to an air extraction unit.
  • the dust extraction air duct 2 can be adapted to the tilting action of the tilting top cover 12 to ensure the safety, service life and working reliability of the equipment.
  • the above-mentioned movable air duct 22 can adopt a retractable pipe body such as a bellows to better meet the movable requirements of the tilting top cover 12 .
  • an electronically controlled valve is provided on the dust extraction air duct 2 to facilitate remote control of the air extraction work of the dust extraction air duct 2;
  • the dust extraction air duct 2 includes a fixed air duct 21 and a movable air duct
  • the electronically controlled valve can be arranged on the fixed air duct 21.
  • the dust extraction air duct 2 is connected to a dust removal mechanism.
  • a wet spray dust removal method is adopted.
  • the dust removal mechanism includes a spray washing tower, a dehydrator and an induced draft fan connected in series.
  • the spray washing tower There are several water mist generating devices in the spray washing tower to achieve uniform and dense water mist spraying, and the dusty steam flow is fully washed and purified; the wastewater recovered by the spray washing tower can be reused in the above spraying after purification treatment
  • the flue gas is purified and then enters the dehydrator, which effectively reduces the moisture content of the flue gas before being discharged through the induced draft fan.
  • the top cover driving mechanism includes a pulley mechanism, a hoisting rope 32 and a hoisting machine 34.
  • the hoisting rope 32 is connected to the hoisting machine 34 and is wound around the pulley mechanism and then connected to the hoisting machine 34.
  • the tilting top cover 12 is connected.
  • a movable pulley 31 can be provided on the tilting top cover 12 .
  • the top cover driving mechanism also includes a support frame 35 standing next to the hot slag box 11, and some pulleys in the pulley mechanism are provided on the support frame 35.
  • the pulley mechanism also includes a movable pulley 31 provided on the tilting top cover 12; optionally, a fixed pulley 33 is provided on the top of the support frame 35 to meet the driving requirements; optionally, the winch 34 can be installed on the ground , can also be installed on the support frame 35 through the support plate.
  • the support frame 35 can be extended to a certain height to serve as a support column for the overhead traveling track, or to support gas pipelines in the workshop, etc.
  • the environmentally friendly hot slag treatment system provided in this embodiment is equipped with a tilting top cover 12 for the hot slag box 11 and integrates a spray mechanism and a dust extraction mechanism on the tilting top cover 12 to meet the requirements of the hot slag treatment system. While pumping water into the slag box 11, it can prevent dusty steam, etc. from escaping upward, and can pump out smoke, dust, steam, etc. in time. It can achieve good dust removal effects and effectively improve the factory interior without affecting the process operation.
  • the tilting top cover 12 since the tilting top cover 12 is used, in addition to effectively collecting dusty steam generated when pumping water from steel slag, when pouring slag into the hot slag box 11, the tilting top cover 12 can be turned up Dust extraction at a certain angle can collect the flue gas generated during the slag pouring process, thereby achieving dust removal throughout the entire steel slag treatment process, with better environmental protection effects and better improvements to the factory production and operating environment.
  • the environmentally friendly hot slag treatment system provided by this embodiment has a simple structure, reasonable layout, and flexible operation. It does not affect the original hot slag operation process, has low transformation difficulty, and is suitable for reconstruction or new steel slag hot slag projects.
  • the above hot slag treatment system as shown in Figure 1, it also includes a side cover 13, which is movably disposed at the side opening of the hot slag box 11.
  • a side cover 13 By providing the side cover 13, the airtightness of the hot slag box 11 during water cooling can be further improved, the water cooling zone effect and the dust extraction effect can be improved, the escape of dusty steam can be reduced, and the on-site operating environment can be further improved.
  • the side cover 13 is mounted on the hot slag box 11 , for example, hanging rings are respectively provided at the left and right ends of the side cover 13 , and hooks are provided at corresponding positions of the hot slag box 11 ;
  • the side cover 13 can be hoisted by a crane, so that the side cover 13 can be mounted on and removed from the hot slag box 11.
  • a lifting ring can be provided on the top or outer wall of the side cover 13.
  • the side cover 13 is installed on the tilting top cover 12 .
  • the side cover 13 adopts the form of a rolling shutter door, so that it can be rolled up on the tilting top cover 12 or pulled down from the tilting top cover 12 to allow the slag tank to dump hot slag and the slag cleaning equipment to enter the hot slag dumping box.
  • the side cover 13 can also be hinged on the tilting top cover 12, and a side cover driving mechanism is provided on the upper surface of the tilting top cover 12 and connected to the side cover through the transmission structure 13 can be connected.
  • the side cover 13 can be adjusted through the side cover 13.
  • the cover 13 further blocks the rise of the chimney and water mist, thereby improving the dust removal effect accordingly.
  • Embodiments of the present invention also relate to a method of using an environmentally friendly rising hot slag treatment system, including:
  • the spray mechanism can also be used to spray water.
  • the sprayed atomized water can effectively capture the rising smoke.
  • the tilt angle of the slag tank is also constantly changing as the hot slag dumping progresses.
  • the tilting angle of the tilting top cover 12 can also be adjusted accordingly. , so that the tilting top cover 12 is as close as possible to the hot slag tank 11.
  • the tilting top cover 12 is lowered and closed on the tilting top cover 12.
  • the spray mechanism is put into use to pump water to cool down the hot slag. During this process, it is ensured that the dust extraction air duct 2 performs exhaust work continuously or intermittently.

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

Abstract

La présente invention concerne un système de traitement de laitier projeté à chaud respectueux de l'environnement, comprenant une boîte à laitier projeté à chaud (11), un couvercle supérieur de type à basculement (12) monté rotatif au sommet de la boîte à laitier projeté à chaud (11), et un mécanisme d'entraînement de couvercle supérieur pour entraîner la rotation par basculement du couvercle supérieur de type à basculement (12) par rapport à la boîte à laitier projeté à chaud (11). Un mécanisme de pulvérisation est disposé au fond du couvercle supérieur de type à basculement (12) ; et un orifice d'extraction de poussière est disposé sur le couvercle supérieur de type à basculement (12) et est relié à un tuyau d'air d'extraction de poussière (2). Du fait que le couvercle supérieur de type à basculement (12) est utilisé, lorsque du laitier est coulé dans la boîte à laitier projeté à chaud (11), le couvercle supérieur de type à basculement (12) peut être basculé vers le haut selon un certain angle, et une extraction de poussière est effectuée pour collecter le gaz de combustion généré pendant la coulée du laitier, ce qui permet d'obtenir une élimination de poussière du processus entier pour le traitement du laitier d'acier. Une fonction de projection d'eau pour la boîte à laitier projeté à chaud est assurée, dans l'intervalle, de la vapeur contenant de la poussière et similaire peut être empêchée de s'échapper vers le haut, et de la poussière de combustion, de la vapeur et similaire peuvent être extraites à temps, ce qui permet d'obtenir un bon effet d'élimination de poussière, et d'améliorer efficacement l'environnement d'opération de production dans un atelier.
PCT/CN2022/112178 2022-05-31 2022-08-12 Système de traitement de laitier projeté à chaud respectueux de l'environnement et son procédé d'utilisation Ceased WO2023231183A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210607858.9A CN114836586A (zh) 2022-05-31 2022-05-31 环保型热泼渣处理系统及其使用方法
CN202210607858.9 2022-05-31

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Cited By (1)

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CN117587174A (zh) * 2024-01-19 2024-02-23 新乡市鑫锋机械有限公司 一种封闭式钢渣翻转装置

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CN114836586A (zh) * 2022-05-31 2022-08-02 中冶南方工程技术有限公司 环保型热泼渣处理系统及其使用方法
CN115612759A (zh) * 2022-12-18 2023-01-17 河北工业职业技术学院 用于铸余渣的环保处理系统

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CN209322915U (zh) * 2018-12-05 2019-08-30 葫芦岛首钢东华机械有限公司 一种热闷钢渣处理设备
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Publication number Priority date Publication date Assignee Title
CN117587174A (zh) * 2024-01-19 2024-02-23 新乡市鑫锋机械有限公司 一种封闭式钢渣翻转装置
CN117587174B (zh) * 2024-01-19 2024-04-09 新乡市鑫锋机械有限公司 一种封闭式钢渣翻转装置

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