WO2012024835A1 - 高温固态钢渣的处理方法及系统 - Google Patents

高温固态钢渣的处理方法及系统 Download PDF

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Publication number
WO2012024835A1
WO2012024835A1 PCT/CN2010/076372 CN2010076372W WO2012024835A1 WO 2012024835 A1 WO2012024835 A1 WO 2012024835A1 CN 2010076372 W CN2010076372 W CN 2010076372W WO 2012024835 A1 WO2012024835 A1 WO 2012024835A1
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WO
WIPO (PCT)
Prior art keywords
steel slag
feeding
cylinder body
temperature solid
high temperature
Prior art date
Application number
PCT/CN2010/076372
Other languages
English (en)
French (fr)
Inventor
肖永力
李永谦
刘茵
崔健
Original Assignee
宝山钢铁股份有限公司
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 宝山钢铁股份有限公司 filed Critical 宝山钢铁股份有限公司
Priority to US13/818,789 priority Critical patent/US9084999B2/en
Priority to JP2013525109A priority patent/JP5611467B2/ja
Priority to BR112013004319-9A priority patent/BR112013004319B1/pt
Priority to RU2013113179/02A priority patent/RU2530914C1/ru
Priority to EP10856288.5A priority patent/EP2610353B1/en
Priority to PL10856288.5T priority patent/PL2610353T3/pl
Priority to PCT/CN2010/076372 priority patent/WO2012024835A1/zh
Priority to KR1020137004905A priority patent/KR101562315B1/ko
Publication of WO2012024835A1 publication Critical patent/WO2012024835A1/zh

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/04—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container
    • 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
    • C21B2400/052—Apparatus features including rotating parts
    • 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
    • C21B2400/052—Apparatus features including rotating parts
    • C21B2400/056—Drums whereby slag is poured on or in between

Definitions

  • the invention relates to a method and a processing system for treating high temperature solid steel slag. Background technique
  • Steel slag is an inevitable by-product of the steelmaking process, accounting for about 10% to 15% of steel production. Therefore, the rapid and effective treatment of steel slag, especially high-temperature steel slag, directly affects the normal operation of the steelmaking process and the sustainable development of steel companies. Due to the differences in steelmaking processes in different steel mills, the composition and temperature of the steel slag produced during the smelting process are not the same: some high-temperature steel slags have good fluidity and can pour like water; some have poor fluidity and are difficult to remove from slag.
  • the tank (container that holds and transports high-temperature steel slag, also known as the slag pack) is conveniently poured out, and must be poured out of the slag pot by means of mechanical external force or by inverting the slag pot.
  • the existing hot steel slag treatment process is typically hot, wind quenched, shallow pan, hot stuffing, drum process and so on.
  • Hot pouring is a relatively primitive treatment process.
  • the high-temperature steel slag is poured on a designated site.
  • the heat of the steel slag is lost by air cooling or spraying a small amount of water.
  • it is necessary to continuously use the excavator or The forklift is turned over; the hot-treated steel slag can not be directly used, and it needs to be piled up for several months and then crushed and sorted again for users to use.
  • the whole process is not only long in process, large in area, but also in harsh operating environment and serious pollution, and there is a tendency to be replaced by other processes.
  • the air quenching process represented by the disclosures of JP24238276 and CN88211276 better realizes the rapid granulation treatment of liquid steel slag.
  • the quenched slag has fine and uniform particle size and stable performance, and can be directly utilized.
  • the disadvantage is that the processing object of the process is strictly limited, and only the steel slag with good fluidity can be treated, and the steel slag with high viscosity and poor fluidity cannot be treated.
  • the shallow-disc steel slag treatment process improves the production efficiency on the basis of the hot-spraying process, but there are still shortcomings such as long treatment cycle, high pollution, high operating cost, and aging of steel slag.
  • the hot slag hot slag process represented by CN02157162.7 and CN200410096981.0 realizes the rapid pulverization treatment of steel slag. After about 12 hours, the steel slag of about 800 °C is pulverized into millimeters by the thermal stress and chemical stress of the steel slag itself.
  • the fine slag powder of the grade can be directly used as clinker for cement production after sorting.
  • the process is relatively simple and can also achieve full quantitative treatment of steel slag; but the shortcomings are also very obvious: In view of safety considerations, the process can only process block steel slag below 800 °C, high temperature steel slag must be hot first Cooling outside the pool, during the period to improve production efficiency, it is inevitable to repeatedly turn over, dust and heat pollution is serious.
  • the roller slag treatment process represented by CN99127012.6 and CN200410054165.3 has realized the concept of rapid treatment of high-temperature steel slag in a closed container for the first time. It can be rotated around a closed container within 1500 °C within a few minutes.
  • the high-temperature liquid slag is dynamically, continuously and rapidly cooled and broken into granular commercial slags below 100 ° C for direct use by users.
  • the large amount of dust-containing vapor generated during the treatment process is discharged by the chimney after being purified, which eliminates the drawbacks of steam and dust flying in the traditional slag treatment process.
  • the treatment of high-viscosity slag caused by the slag splashing furnace can also be realized by means of a dedicated skimmer.
  • the disadvantage is that the existing drum unit cannot achieve the cleaning treatment of the bottom slag. Due to the large degree of slag at the bottom of the tank and the lack of fluidity, it cannot be directly poured into the existing drum unit. It also needs to be equipped with a special slag slag yard to dump the bottom slag and some of the high slag remaining in the slag residue. The field is traditionally cooled and broken, so the efficiency is affected and dust is generated.
  • Another object of the present invention is to provide a treatment system for high temperature solid steel slag to achieve high efficiency treatment of high temperature steel slag.
  • the main idea of the invention is to carry out the slag into the high-temperature solid steel slag and gradually process it in the closed container, and the processing device is the feeding cylinder and the working cylinder double-chamber series drum, thereby realizing the cleaning and high-efficiency treatment of the high-temperature steel slag. .
  • a method for treating high temperature solid steel slag includes: Step a, axially connecting the working cylinder and the feeding cylinder in series, and setting the feeding cylinder to accommodate a sufficient amount of high temperature solid steel slag; Step b, high temperature The solid steel slag is once loaded into the feeding cylinder; and in step c, the working cylinder and the feeding cylinder are simultaneously rotated to axially convey the high temperature solid steel slag in the feeding cylinder to the working cylinder, in the working cylinder The high-temperature solid steel slag gradually transferred from the feed cylinder is treated and the treated high-temperature solid steel slag is discharged. Out.
  • a feed cylinder that holds a sufficient amount of high temperature solid steel slag in front of the working cylinder allows for a single feed operation for different slag tanks.
  • a processing system for a high temperature solid steel slag includes: a working cylinder body, a high temperature steel slag cooling and crushing medium, a spray pipe of a spray cooling system, and a feed cylinder body disposed at the front end of the working cylinder body
  • the feeding cylinder body and the working cylinder body are rigidly fixed together, the axis of the feeding cylinder body is on the same line as the axis of the working cylinder body, and the feeding port is opened at the side of the feeding cylinder body, and the feeding port is arranged
  • the body, the working cylinder and the feeding cylinder are rotatable thereon; and a transmission for driving the working cylinder and the feeding cylinder to rotate on the supporting device
  • the feeding port of the feeding cylinder is rotated to the position directly above by the transmission device, and the hydraulic bracket device at the lower part of the feeding cylinder body is started to hold the feeding cylinder body tightly;
  • the mouth, and then start the feeding operation the high-temperature solid steel slag is poured into the feeding cylinder through the feeding funnel by pouring the slag tank at a time to realize the one-time slag filling operation; after the slag is completed, the feeding of the feeding cylinder is completed.
  • the mouth is sealed and closed, and the transmission device is started.
  • the high-temperature solid slag in the feeding cylinder gradually moves downward with the rotation of the cylinder, and sequentially enters the working cylinder; the large-scale high-temperature solid steel slag is cooled and crushed in the working cylinder and the process The cooling water is continuously cooled and broken, and the finished slag reaching a certain particle size is sent out to the working cylinder through the output device.
  • the axes of the feed cylinder and the working cylinder have an inclination angle with respect to the horizontal plane, and the inclination angle is between
  • a moving trolley is arranged above the feeding cylinder, a sealing door is arranged at the feeding port, and the feeding door is fed through the feeding funnel, and the moving trolley has two stations, a sealing door station and a feeding funnel station.
  • the moving trolley removes the sealing door; on the contrary, when the sealing door is in the closed locking state, the moving trolley drives the feeding funnel to the offline working position.
  • the sealing door is provided with an opening and closing locking device
  • the opening and closing locking device comprises a locking block fixed on the sealing door and a corresponding locking pressing head on the feeding cylinder, and is moved on the trolley The robot performs the pressing and opening of the locking ram.
  • the sealing door is provided with an opening and closing locking device.
  • the opening and closing locking device comprises a driving motor, a worm gear and a crank device.
  • the crank device is fixed at one end of the sealing door and the other end is fixed to the worm.
  • the opening and closing operation is performed in accordance with the rotation of the worm gear.
  • the sealing door is provided with an opening and closing locking device.
  • the opening and closing locking device comprises a rotary joint, a hydraulic cylinder and a hydraulic station.
  • the hydraulic station is connected to one end of the rotary joint, and the other end of the rotary joint is connected to one end of the hydraulic cylinder.
  • the rotary joint is mounted on the front end surface of the feed cylinder, the rotary joint is located on the same axis as the feed cylinder, and the other end of the hydraulic cylinder is connected to the sealing door.
  • the sealing door is a flat plate, one end of the sealing door is hinged to the front end face of the feeding cylinder, and the other end is connected to a hydraulic cylinder or a worm gear device in the opening and closing locking device.
  • the sealing door is a curved plate disposed at the inlet, and the curvature of the sealing door is equal to the arc of the side of the feeding cylinder, and the hydraulic cylinder or worm gear in the sealing door and the opening and closing locking device The devices are connected.
  • the sealing door is a curved plate disposed at the feeding opening, and the arc of the sealing door is equal to the arc of the side of the feeding cylinder, and the matching surface of the sealing door and the feeding opening has a tapered structure.
  • the outer large and small are small, which facilitates the cooperation and sealing of the two; the sealed door can be easily removed and lowered by the robot on the moving trolley.
  • the steel slag treatment method adopts the method of “single slag and gradual treatment”, which changes the existing method of “side slag treatment”, which not only improves the operating rate of driving, but also eliminates the necessity for processing high viscous slag.
  • the slag tank tipping device and the slag slag device not only save a large investment, but also greatly improve the production efficiency, and can quickly process high-viscosity slag, especially high-temperature massive steel slag similar to the bottom slag.
  • the steel slag treatment device adopts a double-cavity serial structure of a feeding cylinder body and a working cylinder body, and changes the existing single process chamber processing cylinder body, and adds a feeding/storage chamber on the side of the processing chamber, and passes an inclination angle and
  • the spiral motion generated when the drum rotates subtly realizes the axial feed and flow of the slag inside the cylinder, which not only solves the technical bottleneck of the difficulty in feeding the bottom slag, but also realizes "integral feeding, progressive processing". Process approach.
  • FIG. 1 is a schematic structural view of an embodiment of a high temperature solid steel slag processing apparatus
  • Figure 2 is a view taken along line M of Figure 1;
  • FIG. 3 is a schematic structural view of another embodiment of a high temperature solid steel slag processing apparatus
  • Figure 4 is a plan view of Figure 3;
  • Figure 5 is a view showing the N-direction of Figure 3, which is a schematic view of a sealing door locking method of another embodiment
  • FIG. 6 is a schematic structural view of another embodiment of a high temperature solid steel slag processing apparatus
  • Figure 7 is a plan view of Figure 6;
  • Figure 8 is a cross-sectional view taken along line A-A of Figure 7.
  • 1 discharging system 1-1 finished product slag conveying device, 1-2 finished product slag, 1-3 discharging chute; 2 exhausting mechanism; 3 anti-return device; 4 working cylinder: 4-1 cooling and crushing medium (steel ball), 4-2 copy board; 5 joint flange; 6 feed funnel; 7 slag tank; 8 mobile trolley and track; 9 feed cylinder: 9-1 feed port; 10 scrap cleaning device; Scrap storage trolley; 12 hydraulic support device; 13 support device: 13-1 support ring, 13-2 support wheel; 14 Transmission: 14-1 large ring gear, 14-2 small pinion, 14-3 reducer , 14-4 motor; 15 sealing door removal and locking manipulator; 16 sealing door; 17 locking device: 17-1 connecting rod, 17-2 hydraulic station, 17-3 hydraulic cylinder, 17-4 rotary joint, 17 -5 sealed door opening and closing motor, 17-6 worm gear device, 17-7 bushing, 17-8 crank device; 17-9 power socket; 18 steel slag to be treated; 19 spray cooling system.
  • a high-temperature solid steel slag processing method is provided.
  • a feeding cylinder 9 capable of accommodating a sufficient amount of high-temperature solid steel slag is provided, and a side of the feeding cylinder 9 is provided.
  • the inlet port 9-1 and the sealing door 16 which can be automatically opened and closed, the feeding cylinder body 9 and the working cylinder body 4 are rigidly fixed together by the flange 5 coaxially, and the axis and the horizontal surface face up at a certain inclination angle A ; A is between 0 and 20 °.
  • the working cylinder 4 is provided with a cooling and crushing medium 4-1, that is, a steel ball, for rapidly cooling and crushing the block high-temperature steel slag; the cooling water sprayed by the spray cooling system 19 controllably cools the crushed steel slag and Immersion, rapid stabilization and normal temperature, and heat exchange cooling of the steel ball 4-1; the working cylinder 4 and the feeding cylinder 9 are lifted by the supporting device 13 and the stopping device 3, wherein the supporting device 13 is Support ring 13-1, roller device 13-2
  • the two support rings 13-1 are respectively fixed to the front and rear portions of the working cylinder 4;
  • the transmission device 14 is composed of a large ring gear 14-1, a small pinion 14-2, a reducer 14-3 and a motor 14-4.
  • the working cylinder 4 and the feeding cylinder 9 can be rotated in a set direction and speed.
  • the stop of the rotating portion is directional, and the feeding port of the feeding cylinder 9 and the sealing door 16 are located directly above each time the parking is stopped, thereby facilitating the opening and closing of the sealing door 16 and the feeding operation.
  • the hydraulic bracket 12 at the lower part of the feeding cylinder is started, and the feeding cylinder 9 is tightly supported; the hydraulic system is driven by the remote control device or under manual intervention (the receiving and powering of the worm gear system is In the stationary state, it is manually completed.
  • the sealing door of the upper part of the moving trolley 8 is driven and the locking robot 15 or the worm gear system opens the feeding door 16, and the feeding funnel 6 is moved directly above the feeding port, and under the traction of the vehicle
  • the slag tank 7 is moved directly above the feeding funnel 6, and the slag tank 7 is tilted, and the high-viscous slag or the bottom slag in the tank is poured into the feeding cylinder 9 once and then moved into the feeding funnel 6 and
  • the lower hydraulic bracket closes and locks the feed door 16 via the hydraulic system or worm gear system (when the worm gear is used to close the feed door, the power supply needs to be unplugged).
  • the transmission device 14 is started, and the solid slag in the feeding cylinder 9 is gradually moved downward with the rotation of the cylinder 9, and is spirally fed into the working cylinder 4 in turn; meanwhile, the spraying system 19 starts.
  • the large solid steel slag is continuously cooled and broken in the working cylinder 4 by the rolling of the steel ball 4-1 with the rotation of the working cylinder 4, and the finished slag reaching a certain granularity is sent out through the output device 1.
  • the dust-containing tail gas generated during the treatment is collected by the exhaust mechanism 2, and discharged after purification treatment; the sewage is recycled.
  • a high temperature solid steel slag treatment system including a feed cylinder 9 and a work cylinder 4 can also be understood.
  • the working cylinder 4 is provided with a high-temperature steel slag cooling and crushing medium 4-1, that is, a steel ball, and a spray cooling system 19; the axis of the working cylinder 4 is at an angle A with the horizontal plane, and is supported by the idler device 13-2.
  • the ring 13-1 is lifted up, and the axial force generated during the rotation of the working cylinder 4 and the feeding cylinder 9 is balanced by the retaining device 3;
  • the transmission 14 is composed of a large ring gear 14-1 and a small pinion 14 - 2, the reducer 14-3 and the motor 14-4, wherein the large ring gear 14-1 is fixed on the working cylinder 4, through the driving action of the transmission 14, the working cylinder 4 and the feeding cylinder 9 can Rotate in the set direction and speed.
  • An exhaust mechanism 2 and a discharge mechanism 1 are disposed at a rear end of the working cylinder 4, and the exhaust mechanism 2 collects exhaust gas and dust generated during the process for purification and discharge in a post process; the discharge mechanism 1 is responsible for processing
  • the finished steel slag 1-2 is smoothly exported to the working cylinder 4 and transported to an external finished slag temporary storage yard or storage silo.
  • the feeding cylinder 9 is disposed at the front end of the working cylinder 4, and the feeding cylinder 9 has a feeding port on the side thereof and cooperates therewith.
  • the sealing door 16 is composed.
  • the opening and closing of the sealing door 16 is completed by the opening and closing locking device 17 and the matching robot 15.
  • the opening and closing locking device 17 can be realized by a hydraulic system or by a worm gear system.
  • the hydraulic system includes components such as a connecting rod 17-1, a hydraulic station 17-2, a hydraulic cylinder 17-3, and a rotary joint 17-4; the worm gear system is opened and closed by the sealing door 17-5, the worm gear device 17-6, The sleeve 17-7, the crank 17-8 and the power socket 17-9 are arranged, and the worm gear system is fixed on the feeding cylinder.
  • the front end of the feeding cylinder 9 is provided with a feeding port, and the rear end of the feeding cylinder 9 is fixed to the front end of the working cylinder 4, and the axis of the feeding cylinder 9 is on the same line as the axis of the working cylinder 4. That is, the axes of the feed cylinder 9 and the working cylinder 4 are at an inclination angle A to the horizontal plane. In one embodiment, the angle A between the axis of the working cylinder 4 and the feed cylinder 9 and the horizontal plane is between 0 and 20 degrees.
  • the spray cooling system 19 provides cooling water to spray-cool the steel slag and corresponding equipment to stabilize the steel slag and to normalize the temperature.
  • a feeding port is opened on the side of the feeding cylinder 9, the sealing door is a curved plate sealing door 16, and the arc of the curved plate sealing door 16 and the feeding cylinder 9
  • the curvature of the front side is equal; the curved plate sealing door 16 is removed by the robot 15 on the moving cart, and is locked and opened by the robot 15 and the locking mechanism 17.
  • the feeding cylinder body 9 has a feeding opening on the side thereof, and the sealing door is a flat plate type sealing door 16, and one end of the flat plate type sealing door 16 is hinged to the front end surface of the feeding cylinder body 9. The other end is connected to the hydraulic cylinder 17-3 in the opening and closing locking device 17.
  • a feed port is formed on the side of the feed cylinder 9, the seal door 16 is plate-shaped or curved, and the back surface of the seal door 16 is connected to the worm-gear system in the opening and closing lock device 17. .
  • the feed cylinder 9 has a feed opening on the side thereof, a curved plate sealing door 16, and the curvature of the curved plate sealing door 16 and the front end side of the feed cylinder 9
  • the arcs are equal; the ends of the arcuate sealing door are connected to the hydraulic cylinders 17-3 in the opening and closing locking device 17.
  • the high-temperature solid steel slag processing apparatus operates as follows: When preparing the slag, the operator activates the transmission device 14 to start the rotation of the feed cylinder 9 and the working cylinder 4, When the feed port on the feed cylinder 9 is directly above, the transmission 14 is closed to stop the feed cylinder 9 from rotating.
  • the feeding cylinder 9 is tightly held, and the hydraulic system seals the opening and closing locking device 17 of the door by remote operation or by turning on the power (the device is at a standstill)
  • the feeding funnel 6 is operated by the moving cart 8 to be directly above the feeding port and locked.
  • the feeding funnel 6 can also be used for transition, as shown in Fig. 3 and Fig.
  • the slag tank 7 is moved to the feed hopper 6 or above the feed port, and the slag tank 7 is slowly tilted, and the high viscous slag or the large bottom slag 18 in the slag tank 7 is poured into the feed cylinder. 9; moving into the material funnel 6, moving the sealing door 16 to the feeding port portion and closing and locking the flat plate or the curved plate sealing door 16 by the locking mechanism 17, which needs to be unplugged when using the worm gear system The power plug, thereby completing the one-time feeding of the feed cylinder 9.
  • the hydraulic support 12 at the lower part of the feeding cylinder 9 is removed, and the transmission device 14 is started to rotate the feeding cylinder 9 and the working cylinder 4 synchronously, and the rotation speed is slow to fast, and the setting is gradually reached. value.
  • the high temperature bulk steel slag 18 in the feed cylinder 9 is gradually moved downward with the rotation of the feed cylinder 9 under the combined action of the gravity component along the axial direction of the feed cylinder 9 and the rotational force of the feed cylinder 9. It is fed in a spiral and sequentially enters the working cylinder 4.
  • the steel slag 18 is rapidly cooled and broken by the steel ball 4-1 in the working cylinder 4 with the rotation of the working cylinder 4, and the process cooling water sprayed by the spray cooling system 19 controls the heat exchange of the steel ball 4-1 in a controlled manner. Cooling, and secondary cooling and soaking of the steel slag cooled and crushed by the steel ball 4-1, so that the temperature of the finished steel slag 1-2 reaching a certain particle size will be below 100 °C, through the slag copying board 4-2 and discharging The chute 1-3 is conveyed to the finished slag conveying device 1-1, and proceeds to the next sorting process.
  • the large pieces of cold steel mixed in the high-temperature solid steel slag 18 are accumulated in the working cylinder 4 after being processed by the working cylinder 4, and need to be cleaned up when a certain amount is accumulated.
  • the sealing door 16 is first removed or opened, and the feeding port of the feeding cylinder 9 is rotated to the vertical lower portion by the control transmission mechanism 14, and the cold steel cleaning robot 10 is operated to cut the large cold steel from the cold steel.
  • the working cylinder 4 is cleaned out and temporarily stored in the cold steel storage bucket/car 11 for subsequent processing and utilization.
  • the excess process cooling water in the process is collected and treated, and then recycled.
  • the dust-containing waste steam generated in the process is collected by the exhaust mechanism 2, and discharged by spraying and dusting.

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Description

高温固态钢渣的处理方法及系统 技术领域
本发明涉及高温固态钢渣的处理方法及处理系统。 背景技术
钢渣是炼钢过程的必然副产品， 约占钢产量的 10%到 15%， 因此， 对钢渣尤 其是高温钢渣的快速有效处理直接影响到炼钢工艺的正常运行和钢铁企业的可持 续发展。 由于各钢厂炼钢工艺的差异， 冶炼过程中产生的钢渣成分和温度不尽相 同： 有的高温钢渣流动性很好， 能够像水一样倾泼； 有的流动性较差， 很难从渣 罐 （盛装和运送高温钢渣的容器， 又称渣包） 中方便地倒出， 必须借助于机械外 力或将渣罐倒置方能将之倒出渣罐。
为了延长渣罐的实用寿命， 避免高温钢渣在注入时对渣罐底部的冲刷， 有的 钢厂还在空渣罐的底部垫上一些冷渣， 当高温钢渣注入时， 这部分冷渣与接触的 高温钢渣混熔在一起， 连同渣罐内壁部位的钢渣形成大的渣壳， 几吨或十几吨， 约占总渣量的三分之一， 这部分渣要么不出来， 要么倾罐而出， 需要进行适当的 机械破碎方能进行后续处理， 扬尘非常严重。
现有的热态钢渣处理工艺， 比较典型的有热泼、 风淬、 浅盘、 热闷、 滚筒工 艺等。
热泼是比较原始的处理工艺， 先将高温钢渣倾泼在指定的场地上， 依靠空冷 或喷洒少量的水将钢渣的热量散失掉， 为加快冷却提高处理效率， 需要不停地用 挖掘机或铲车进行倒翻； 经热泼处理的钢渣还不能直接利用， 需要堆放陈化数月 后再次经破碎、 分选才能供用户利用。 整个处理过程不仅流程长、 占地大， 而且 操作环境恶劣、 污染严重， 有被其它工艺取代的趋势。
以 JP24238276和 CN88211276公开内容为代表的风淬工艺较好地实现了液态钢 渣的快速粒化处理， 风淬渣粒度细小均匀、 性能稳定， 可以直接利用。 不足之处 在于该工艺的处理对象受到严格限制， 只能处理流动性很好的钢渣， 对粘度较 高、 流动性差的钢渣无法处理。
浅盘法钢渣处理工艺是在热泼工艺的基础上提高了生产效率， 但仍存在处理 周期长、 污染大、 运行费用高、 钢渣需要陈化处理的不足。 以 CN02157162.7和 CN200410096981.0为代表的热态钢渣热闷工艺实现了钢渣 的快速粉化处理， 在 12个小时左右依靠钢渣自身的热应力和化学应力将 800°C左右 的钢渣粉化成毫米级的细渣粉， 经分选后可以直接作水泥生产的熟料。 该工艺相 对简单， 也能够实现钢渣的全量化处理； 但不足之处也非常明显： 鉴于安全方面 的考虑， 该工艺只能处理 800°C以下的块状钢渣， 温度高的钢渣必须先在热闷池外 降温， 期间为提高生产效率， 免不了要反复倒翻， 扬尘和热污染严重。
以 CN99127012.6和 CN200410054165.3等为代表的滚筒法钢渣处理工艺首次实 现了在密闭容器内快速处理高温钢渣的理念， 在几分钟之内就可以通过旋转着的 密闭容器将 1500°C左右的高温液态熔渣动态、 连续、 快速冷却并破碎成低于 100°C 的颗粒状商品渣， 直接供用户使用。 处理过程中产生的大量含尘蒸气经净化处理 后由烟囱集中排放， 消除了传统渣处理工艺蒸汽弥漫、 尘土飞扬的弊端。 借助于 专用扒渣机还可实现因溅渣护炉而产生的高粘渣的处理。 不足之处在于现有滚筒 装置还无法实现罐底渣的清洁化处理。 由于罐底渣块度大、 不具备流动性， 无法 直接倒入现有的滚筒装置内， 还需要配备专用的翻渣场， 将罐底渣和部分扒渣残 余的高粘渣倾倒在翻渣场进行传统的冷却、 破碎， 因此效率受影响， 而且有扬尘 发生。 发明内容
本发明的目的在于提供一种高温固态钢渣的处理方法， 以实现高温钢渣的环 保化处理。
本发明的另一目的在于提供一种高温固态钢渣的处理系统， 以实现高温钢渣 的高效化处理。
本发明的主要构思是对高温固态钢渣进行一次进渣、 在密闭容器中渐次处 理， 处理装置为进料筒体和工作筒体双腔串联滚筒， 从而实现了高温钢渣的清洁 化和高效化处理。
根据前述构思， 一种高温固态钢渣的处理方法， 包括： 步骤 a， 将工作筒体 和进料筒体轴向串联， 设定进料筒体能够容纳足够数量高温固态钢渣； 步骤 b， 将高温固态钢渣一次性装入进料筒体； 以及步骤 c， 同时转动工作筒体和进料筒 体， 以轴向传送进料筒体内的高温固态钢渣到工作筒体中， 在工作筒体中对从进 料筒体内逐渐传送过来的高温固态钢渣进行处理并将处理后的高温固态钢渣排 出。
在工作筒体的前面装有一个能容纳足够数量高温固态钢渣的进料筒体， 可以 实现针对不同渣罐的一次性进料作业。
根据前述构思， 一种高温固态钢渣的处理系统， 包括： 工作筒体， 工作筒体 内设置有高温钢渣冷却破碎介质、 喷淋冷却系统的喷淋管； 进料筒体， 设置在工 作筒体前端， 进料筒体和工作筒体刚性地固结在一起， 进料筒体的轴线与工作筒 体的轴线位于同一直线上， 进料筒体的侧面开有进料口， 进料口处设置有与进料 口相配合的密封门， 进料筒体中设置有轴向传动机构； 可升降的液压托座， 设置 在进料筒体的下部； 支承装置， 支承工作筒体和进料筒体， 工作筒体和进料筒体 可在其上转动； 以及传动装置， 用于驱动工作筒体和进料筒体在支承装置上转 动。
准备进料时， 通过传动装置将进料筒体的进料口旋转到正上方指定位置， 启 动进料筒体下部的液压托座装置， 将进料筒体紧紧地托住； 打开进料口， 然后开 始进料作业， 通过倾翻渣罐将高温固态钢渣一次性经进料漏斗倾倒入进料筒体 内， 实现一次性进渣作业； 一次进渣完成后， 进料筒体的进料口被密封关闭， 启 动传动装置， 进料筒体内的高温固态渣随筒体的旋转逐步向下移动， 依次进入工 作筒体内； 大块状的高温固态钢渣在工作筒体内被冷却破碎介质和工艺冷却水不 断地冷却、 破碎， 达到一定粒度的成品渣经输出装置送出工作筒体。
在较佳实施例中， 进料筒体和工作筒体的轴线与水平面具有倾角， 倾角介于
0〜20。 之间。
在较佳实施例中， 进料筒体上方设置移动小车， 进料口配置密封门， 并通过 进料漏斗进料， 移动小车其有两个工位， 密封门工位和进料漏斗工位； 当进料漏 斗处于进料作业时， 移动小车将密封门移走； 反之， 当密封门处于关闭锁紧状态 时， 移动小车带动进料漏斗处于离线工位。
在较佳实施例中， 密封门上装有开闭锁紧装置， 开闭锁紧装置包括固结在密 封门上的锁紧块和进料筒体上对应的锁紧压头， 并通过移动小车上的机械手实现 锁紧压头的压紧和开启。
在较佳实施例中， 密封门上装有开闭锁紧装置， 开闭锁紧装置包括驱动电 机、 蜗轮蜗杆和曲柄装置， 曲柄装置一端固结在密封门的背面， 另一端固结在蜗 轮蜗杆的输出轴上， 随蜗轮蜗杆的旋转进行开闭作业。
在较佳实施例中， 密封门上装有开闭锁紧装置， 开闭锁紧装置包括旋转接 头、 液压缸、 液压站， 液压站与旋转接头的一端相连， 旋转接头另一端与液压缸 的一端相连， 且旋转接头安装在进料筒体前端端面上， 旋转接头与进料筒体位于 同一轴线上， 液压缸的另一端与密封门相连。
在较佳实施例中， 密封门为平面板， 密封门的一端与进料筒体前端端面铰 接， 另一端与开闭锁紧装置中的液压缸或蜗轮蜗杆装置相连。
在较佳实施例中， 密封门为弧形板， 设置在进料口处， 且密封门的弧度与进 料筒体侧面的弧度相等， 密封门与开闭锁紧装置中的液压缸或蜗轮蜗杆装置相 连。
在较佳实施例中， 密封门为弧形板， 设置在进料口处， 且密封门的弧度与进 料筒体侧面的弧度相等， 密封门与进料口的配合面为锥形结构， 外大内小， 方便 二者的配合和密封； 密封门可以由移动小车上的机械手方便地提走和放下。
前述钢渣处理方法采用 "一次进渣， 渐次处理" 的方法， 改变了现有 "边倒 渣边处理" 的方法， 不但提高了行车的作业率， 而且也省掉了为处理高粘渣必须 的渣罐倾翻装置和扒渣装置， 不但节省大笔投资， 生产效率也大幅提高， 能快速 处理高粘渣特别是类似罐底渣的高温块状钢渣。
前述钢渣处理装置采用进料筒体和工作筒体双腔串接结构， 改变了现有单个 工艺腔处理筒体， 在工艺腔一侧增设一进料 /贮料腔， 并通过一倾斜角和滚筒转动 时产生的螺旋运动， 巧妙地实现了渣料在筒体内部的轴向进给和流动， 不但解决 了罐底渣进料难的技术瓶颈， 而且实现了 "整体进料， 渐次处理" 的工艺处理方 法。
前述钢渣处理方法及装置在处理高温固态钢渣的过程中是完全封闭作业的， 在加设蒸汽捕集系统的条件下， 不但可取消烟囱， 减少大笔基建投资， 而且可以 降低粉尘排放几近为零， 蒸汽也可以冷凝回收； 同时， 这种处理工艺， 完全消除 了热态钢渣流动性对处理工艺的影响和限制， 使得 "钢渣先余热回收再滚筒化破 碎处理"变为可能， 进一步提升了钢渣资源化利用的深度和层次。 附图概述
本发明的具体特征、 性能由以下的实施例及其附图进一步给出。 图 1为高温固态钢渣处理装置的一实施例的构造示意图；
图 2为图 1的 M向视图；
图 3为高温固态钢渣处理装置另一个实施例的构造示意图；
图 4为图 3的俯视图；
图 5为图 3中 N向示图， 为另一个实施例的密封门锁紧方法示意图；
图 6为高温固态钢渣处理装置另一个实施例的构造示意图；
图 7为图 6的俯视图；
图 8为图 7中 A-A向剖面图。
图中： 1出料系统： 1-1成品渣输送装置， 1-2成品渣， 1-3出料溜槽； 2排气机 构； 3止退装置； 4工作筒体： 4-1冷却破碎介质 （钢球） ， 4-2抄板； 5联接法兰； 6进料漏斗； 7渣罐； 8移动小车及轨道； 9进料筒体： 9-1进料口； 10废钢清理装 置； 11废钢存贮小车； 12液压托座装置； 13支撑装置： 13-1托圈， 13-2托轮； 14 传动装置： 14-1大齿圈， 14-2小齿轴， 14-3减速机， 14-4电机； 15密封门摘装及锁 紧机械手； 16密封门； 17锁紧装置： 17-1连杆， 17-2液压站， 17-3液压缸， 17-4旋 转接头， 17-5密封门开闭电机， 17-6蜗轮蜗杆装置， 17-7轴套， 17-8曲柄装置； 17-9电源插座； 18待处理钢渣； 19喷淋冷却系统。 本发明的最佳实施方式
下面结合附图和具体实施例对本发明作进一步说明。 下面所述的工作筒体与 其配套的支承、 传动装置可以依据 W 0 2006/024231公开的滚筒法钢渣处理装置进 行实施、 变化。
参见图 1〜图 8可以理解到一种高温固态钢渣处理方法， 在工作筒体 4的前面 装有一个可以容纳足够数量高温固态钢渣的进料筒体 9， 进料筒体 9的侧面有一个 进料口 9-1和可以自动开闭的密封门 16， 进料筒体 9和工作筒体 4通过法兰 5同轴 线、 刚性地固结在一起， 轴线与水平面向上成一定的倾角 A; A介于 0〜20 ° 之 间。
工作筒体 4内设置有冷却破碎介质 4-1， 即钢球， 对块状高温钢渣进行快速冷 却和破碎； 喷淋冷却系统 19喷出的冷却水可控地对破碎后的钢渣进行冷却和浸 泡， 使之快速稳定化和常温化， 并对钢球 4-1进行换热冷却； 工作筒体 4和进料筒 体 9由支承装置 13和止退装置 3托起， 其中支承装置 13由托圈 13-1、 托轮装置 13-2 构成， 两个托圈 13-1分别固结在工作筒体 4的前后部分； 传动装置 14由大齿圈 14- 1、 小齿轴 14-2、 减速机 14-3和电机 14-4组成， 其中大齿圈 14-1固结在工作筒体 4 上。 通过传动装置 14的驱动作用， 工作筒体 4和进料筒体 9可以沿设定的方向和速 度旋转。 旋转部分的停止具有方向性， 每次停车时进料筒体 9的进料口和密封门 16 都位于正上方， 便于密封门 16的开闭和进料作业。
进料时， 启动进料筒体下部的液压托座装置 12， 将进料筒体 9紧紧地托住； 通过遥控装置驱动液压系统或在人工干预下 （蜗轮蜗杆系统的受、 断电是在静止 状态由人工完成） 驱动移动小车 8上部的密封门摘装及锁紧机械手 15或蜗轮蜗杆系 统打开进料门 16， 将进料漏斗 6移至进料口正上方， 在行车牵引下将渣罐 7移至进 料漏斗 6正上方， 倾翻渣罐 7， 将罐中的高粘渣或罐底渣一次性倾翻倒入进料筒体 9 内， 然后移走进料漏斗 6和下部的液压托座， 通过液压系统或蜗轮蜗杆系统关闭并 锁紧进料门 16 (当采用蜗轮蜗杆装置关闭进料门后， 需要拔掉电源） 。
进料结束后， 启动传动装置 14， 进料筒体 9内的固态渣随筒体 9的旋转逐步向 下移动， 呈螺旋进给， 依次进入工作筒体 4内； 同时， 喷淋系统 19开始喷淋冷却作 业， 大块状的固态钢渣在工作筒体 4内随着工作筒体 4的旋转被滚动的钢球 4-1不断 冷却、 破碎， 达到一定粒度的成品渣经输出装置 1送出工作筒体 4。
处理过程中产生的含尘尾气经排气机构 2收集， 净化处理后集中排放； 污水 循环使用。
参照图 1-8， 还可以理解到一种高温固态钢渣处理系统， 其包括进料筒体 9和 工作筒体 4。 工作筒体 4内设置有高温钢渣冷却破碎介质 4-1， 即钢球， 以及喷淋冷 却系统 19; 工作筒体 4的轴线与水平面成一个夹角 A， 通过托轮装置 13-2、 托圈 13- 1托起， 并通过止退装置 3平衡掉工作筒体 4和进料筒体 9在旋转过程中产生的轴向 力； 传动装置 14由大齿圈 14-1、 小齿轴 14-2、 减速机 14-3和电机 14-4组成， 其中大 齿圈 14-1固结在工作筒体 4上， 通过传动装置 14的驱动作用， 工作筒体 4和进料筒 体 9可以沿设定的方向和速度旋转。 在工作筒体 4的后端设置有排气机构 2和出料机 构 1， 排气机构 2将处理过程中产生的尾气和粉尘收集起来， 供后工序净化和排 放； 出料机构 1负责将处理后的成品钢渣 1-2顺利导出工作筒体 4， 并输送到外部的 成品渣临时堆场或贮料仓。
进料筒体 9设置在工作筒体 4的前端， 进料筒体 9侧面开有进料口和与之配合 的密封门 16组成， 密封门 16的打开与关闭由开闭锁紧装置 17及配套的机械手 15完 成， 开闭锁紧装置 17的动作可以通过液压系统实现， 也可通过蜗轮蜗杆系统实 现。 液压系统包括连杆 17-1、 液压站 17-2、 液压缸 17-3和旋转接头 17-4等部件； 蜗 轮蜗杆系统则由密封门开闭电机 17-5、 蜗轮蜗杆装置 17-6、 轴套 17-7、 曲柄 17-8和 电源插座 17-9组成， 蜗轮蜗杆系统固定在进料筒体上。
进料筒体 9的前端开有进料口， 进料筒体 9的后端与工作筒体 4的前端固接， 进料筒体 9的轴线与工作筒体 4的轴线位于同一直线上， 即进料筒体 9和工作筒体 4 的轴线与水平面成一个倾角 A。 在一实施例中， 工作筒体 4、 进料筒体 9的轴线与 水平面的夹角 A介于 0-20° 之间。 喷淋冷却系统 19提供冷却水， 对钢渣和相应的设 备进行喷淋冷却， 使钢渣快速稳定化和常温化。
参见图 1、 图 2所示的实施例， 在进料筒体 9侧面上开有进料口， 密封门为弧 形板密封门 16， 且弧形板密封门 16的弧度与进料筒体 9前端侧面的弧度相等； 弧形 板密封门 16通过移动小车上的机械手 15进行摘装， 并通过机械手 15和锁紧机构 17 进行锁紧和开启。
参见图 3、 图 4所示的实施例， 进料筒体 9侧面上开有进料口， 密封门为平面 板式密封门 16， 平面板式密封门 16的一端与进料筒体 9前端端面铰接， 另一端与开 闭锁紧装置 17中的液压缸 17-3相连。
参见图 5所示的实施例， 在进料筒体 9侧面上开有进料口， 密封门 16为板形或 弧形， 密封门 16的背面与开闭锁紧装置 17中的蜗轮蜗杆系统相连。
参见图 6、 图 7和图 8的实施例， 进料筒体 9侧面上开有进料口， 弧形板密封门 16， 且弧形板密封门 16的弧度与进料筒体 9前端侧面的弧度相等； 弧形密封门的两 端与开闭锁紧装置 17中的液压缸 17-3相连。
同时参照图 1到图 8， 如图所示的高温固态钢渣处理装置是这样工作的： 当准备进渣时， 操作人员启动传动装置 14， 使进料筒体 9、 工作筒体 4开始旋 转， 当进料筒体 9上的进料口位于正上方时， 关闭传动装置 14， 使进料筒体 9停止 旋转。
启动进料筒体下部的液压托座装置 12， 将进料筒体 9紧紧地托住， 通过遥控 作业启动液压系统密封门的开闭锁紧装置 17或通过接通电源 （设备处于静止状 态） 启动蜗轮蜗杆系统密封门开闭锁紧装置 17， 打开位于进料口上的密封门 16， 同时将进料漏斗 6经移动小车 8运行至进料口正上方并锁定， 在进料口比较适当时 也可以不用进料漏斗 6过渡， 如图 3和图 6所示； 在行车牵引下将渣罐 7移至进料漏 斗 6或进料口上方， 缓慢倾翻渣罐 7， 将渣罐 7内的高粘渣或大块的罐底钢渣 18—次 性倾翻倒入进料筒体 9内； 移走进料漏斗 6， 将密封门 16移到进料口部位并通过锁 紧机构 17将平面板或弧形板密封门 16关闭并锁紧， 当采用蜗轮蜗杆系统时需要拔 掉电源插头， 从而完成进料筒体 9的一次性进料。
进渣结束后， 移开进料筒体 9下部的液压托座 12， 启动传动装置 14使进料筒 体 9和工作筒体 4同步旋转起来， 且旋转速度由慢至快， 逐步达到设定值。 进料筒 体 9内的高温大块钢渣 18在沿进料筒体 9轴向重力分力和进料筒体 9旋转力的共同作 用下， 随进料筒体 9的旋转逐步向下移动， 呈螺旋进给， 并依次进入工作筒体 4 内。 钢渣 18在工作筒体 4内随着工作筒体 4的旋转被钢球 4-1快速冷却、 破碎， 喷淋 冷却系统 19喷出的工艺冷却水可控地对钢球 4-1进行换热冷却， 并对被钢球 4-1冷 却破碎的钢渣进行二次冷却和浸泡， 使达到一定粒度的成品钢渣 1-2温度将到 100 °C以下， 经出渣抄板 4-2和出料溜槽 1-3输送到成品渣输送装置 1-1， 进入下一步的 分选工序中。
高温固态钢渣 18中夹杂的大块冷钢经工作筒体 4处理后会积聚在工作筒体 4 内， 当累积到一定数量时需要清理出来。 清理大块冷钢时先移去或打开密封门 16， 通过控制传动机构 14将进料筒体 9的进料口旋转到竖直下部， 由冷钢清理机械 手 10作业， 将大块冷钢从工作筒体 4内清理出来， 暂存于冷钢存贮斗 /小车 11内， 供后续加工利用。
处理过程中多余的工艺冷却水经收集、 沉淀处理后， 循环利用； 过程中产生 的含尘废蒸气经排气机构 2收集、 喷雾除尘后达标排放。

Claims

权利要求
1. 一种高温固态钢渣的处理方法， 包括：
步骤 a， 将工作筒体和进料筒体轴向串联， 设定进料筒体能够容纳足够数量 高温固态钢渣；
步骤 b， 将高温固态钢渣一次性装入进料筒体； 以及
步骤 c， 同时转动工作筒体和进料筒体， 以轴向传送进料筒体内的高温固态 钢渣到工作筒体中， 在工作筒体中对从进料筒体内逐渐传送过来的高温固态钢渣 进行处理并将处理后的高温固态钢渣排出。
2. 如权利要求 1所述的处理方法， 其中， 在步骤 c中， 所述轴向传送是螺 旋传送同时借助于倾斜工作筒体和进料筒体后形成的重力传送。
3. 如权利要求 1所述的处理方法， 其中， 在步骤 c中， 处理高温固态钢渣 的过程中是完全封闭作业的， 可通过蒸汽捕集系统收集在该封闭作业中产生的蒸 汽。
4. 如权利要求 1所述的处理方法， 其中， 在步骤 c中， 在转动的工作筒体 中通过工艺冷却水对高温固态钢渣进行冷却， 并通过随工作筒体转动的破碎介质 对高温固态钢渣进行破碎。
5. 一种高温固态钢渣的处理系统， 包括：
工作筒体， 工作筒体内设置有高温钢渣冷却破碎介质、 喷淋冷却系统的喷淋 管；
进料筒体， 设置在工作筒体前端， 进料筒体和工作筒体刚性地轴向串联， 进 料筒体的轴线与工作筒体的轴线位于同一直线上， 进料筒体的侧面开有进料口， 进料口处设置有与进料口相配合的密封门， 密封门可以启闭并锁紧；
可升降的液压托座， 设置在进料筒体的下部；
支承装置， 支承工作筒体和进料筒体， 工作筒体和进料筒体可在其上转动； 以及
传动装置， 用于驱动工作筒体和进料筒体在支承装置上转动。
6. 如权利要求 5所述的高温固态钢渣的处理系统， 其中， 进料筒体和工作筒 体的轴线与水平面成一个倾角， 以便于将高温固态钢渣从进料筒体中传动到工作 筒体。
7. 如权利要求 5所述的高温固态钢渣的处理系统， 其中， 所述支承装置包括 托轮、 托圈和止退装置支承， 多个托圈分别套在所述筒体上， 托轮设置在托圈的 下方与托圈配合， 止退装置用于平衡进料筒体和工作筒体产生的轴向力。
8. 如权利要求 5所述的高温固态钢渣的处理系统， 其中， 还包括位于进料口 上的进料漏斗， 进料漏斗置于进料筒体上部的移动小车上， 依据进料和处理作业 的要求在进料工位和待机工位间移动。
9. 如权利要求 5所述的高温固态钢渣的处理系统， 其中， 液压托座位于进料 口的正下部， 用于缓冲进料时对筒体的冲击。
10. 如权利要求 5所述的高温固态钢渣的处理系统， 其中， 还包括冷钢清理 装置， 该冷钢清理装置置于进料筒体的前端部， 通过进料口实施清理废钢作业。
11 . 如权利要求 5所述的高温固态钢渣的处理系统， 其中， 所述密封门与进 料口的配合呈锥形， 外大内小， 密封门上装有与进料筒体相配合的开闭锁紧装 置。
12 . 如权利要求 5所述的高温固态钢渣的处理系统， 其中， 所述密封门为平 面板， 密封门的一端与进料筒体前端端面铰接， 密封门的另一端与开闭锁紧装置 相连。
13 . 如权利要求 5所述的高温固态钢渣的处理系统， 其中， 所述进料口的密 封门为弧形板式结构， 密封门的弧度与进料筒体侧面的弧度一致， 当密封门盖住 进料口并被锁紧时， 进料筒体的内腔为完整的圆筒状。
PCT/CN2010/076372 2010-08-26 2010-08-26 高温固态钢渣的处理方法及系统 WO2012024835A1 (zh)

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KR101562315B1 (ko) 2015-10-30
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BR112013004319B1 (pt) 2019-03-19
RU2013113179A (ru) 2014-10-10

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