WO2023231183A1 - Environment-friendly hot-splashed slag treatment system and use method thereof - Google Patents

Abstract

An environment-friendly hot-splashed slag treatment system, comprising a hot-splashed slag box (11), a tipping type top cover (12) rotatably mounted at the top of the hot-splashed slag box (11), and a top cover driving mechanism for driving tipping rotation of the tipping type top cover (12) relative to the hot-splashed slag box (11). A spraying mechanism is provided at the bottom of the tipping type top cover (12); and a dust extraction port is provided on the tipping type top cover (12) and is connected to a dust extraction air pipe (2). Because the tipping type top cover (12) is used, when slag is poured into the hot-splashed slag box (11), the tipping type top cover (12) can be tipped upward by a certain angle, and dust extraction is performed to collect flue gas generated during slag pouring, thus achieving whole-process dust removal for steel slag treatment. A water splashing function for the hot-splashed slag box is met, meanwhile, dust-containing steam and the like can be prevented from escaping upwards, and flue dust, steam and the like can be extracted in time, thus achieving a good dust removal effect, and effectively improving the production operation environment in a workshop.

Description

Environmentally friendly hot slag treatment system and its use method Technical field

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.

Background technique

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.

Although new environmentally friendly treatment processes such as autoclaving and drum slag treatment are currently in the mainstream, they cannot achieve 100% full treatment. In particular, some casting residues, desulfurization slag and unorganized dry slag can only be treated through the hot splash process. . Since the hot slag chamber has an open structure, during the hot slag production process, a large amount of unorganized dust-containing steam is generated during the early slag turning and cooling water extraction processes; if these dust-containing steam cannot be eliminated in time, it will accumulate on the top of the factory building. It not only affects the line of sight of the operator, but also accelerates the corrosion of the steel structure factory building. There are certain safety hazards during long-term operation, and it also causes great harm to the health of workers. At present, dust removal methods are rarely used in the actual production of hot-sprayed steel slag. The main reason is that it is difficult to arrange the dust cover without hindering the dual prerequisites of crane turning over the tank and loader clearing slag.

Contents of the invention

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.

As one embodiment, 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.

As one embodiment, an electronically controlled valve is provided on the dust extraction air duct.

As one of the embodiments, a dust removal mechanism is connected to the dust extraction air duct.

As one of the embodiments, the dust removal mechanism includes a spray washing tower, a dehydrator and an induced draft fan connected in series.

As one embodiment, 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.

As one of the embodiments, 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.

As one of the embodiments, 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.

As one embodiment, 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:

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;

After the hot slag is dumped, 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 present invention at least has the following beneficial effects:

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.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. 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 exerting creative efforts.

Figure 1 is a schematic structural diagram of an environmentally friendly hot slag treatment system provided by an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only some 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 efforts fall within the scope of protection of the present invention.

As shown in Figure 1, 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. There is a dust extraction port and a dust extraction air duct 2 is connected.

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. Correspondingly, 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 .

In one embodiment, 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.

In this embodiment, 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. In one embodiment, 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 °. Furthermore, 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. In this solution, 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. In one embodiment, 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. Through the above-mentioned automatic water supply valve station, the water volume during the steel slag cooling process can be automatically adjusted to ensure that the steel slag watering process is carried out safely and efficiently.

In one embodiment, as shown in Figure 1, 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. Based on this structure, 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 .

In one embodiment, 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 In the solution of 22, the electronically controlled valve can be arranged on the fixed air duct 21.

Further preferably, the dust extraction air duct 2 is connected to a dust removal mechanism. In this embodiment, based on the characteristics of dust-containing steam, a wet spray dust removal method is adopted. Specifically, the dust removal mechanism includes a spray washing tower, a dehydrator and an induced draft fan connected in series. 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 In the mechanism, 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.

In one embodiment, as shown in Figure 1, 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. In the above pulley mechanism, a movable pulley 31 can be provided on the tilting top cover 12 . Further preferably, as shown in Figure 1, 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.

In one embodiment, 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. Production operating environment; 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.

To further optimize 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. 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.

In one embodiment, 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. Correspondingly, a lifting ring can be provided on the top or outer wall of the side cover 13.

In another embodiment, the side cover 13 is installed on the tilting top cover 12 . Optionally, 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. 11 space requirements, easy operation and high flexibility; 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. In this solution, when the tilting top cover 12 is turned up and the ventilation operation is performed, the angle of the side cover 13 can be adjusted. When the space requirements for dumping hot slag in the slag tank are met, 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:

(1) When it is necessary to pour hot slag into the hot slag dumping box 11, the tilting top cover 12 is turned upward to a certain angle, and the dust extraction air duct 2 is used for exhausting. At this time Then pour the hot slag into the hot slag dumping box 11;

During the hot slag dumping process, the spray mechanism can also be used to spray water. The sprayed atomized water can effectively capture the rising smoke.

In addition, during the process of dumping hot slag from the slag tank, the tilt angle of the slag tank is also constantly changing as the hot slag dumping progresses. Correspondingly, 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.

(2) After the hot slag is dumped, 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.

(3) Further, when the temperature of the steel slag drops below 150°C, after the steam in the hot slag pouring chamber disappears, the spray mechanism stops spraying water, the dust extraction duct 2 stops exhausting, the side cover 13 is removed, and the tilt The flip-top cover 12 is flipped upward, and the slag cleaning equipment shovels out the steel slag for the next step of processing.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (10)

An environmentally friendly hot slag treatment system includes a hot slag box, which is characterized in that it also includes 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 hot slag box. There is a driving mechanism for the top cover that tilts and rotates in the hot slag box. The bottom of the tilting top cover is provided with a spray mechanism. The tilting top cover is provided with a dust extraction port and is connected to a dust extraction air duct. The environmentally friendly hot slag treatment system according to claim 1, wherein the dust extraction air duct includes a fixed air duct and a movable air duct, and the movable air duct is installed on the tilting top cover. 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 air extraction unit. The environmentally friendly hot slag treatment system as claimed in claim 1, characterized in that an electronically controlled valve is provided on the dust extraction air duct. The environmentally friendly hot slag treatment system according to claim 1, characterized in that: the dust extraction air duct is connected to a dust removal mechanism. The environmentally friendly hot slag treatment system according to claim 4, wherein the dust removal mechanism includes a spray washing tower, a dehydrator and an induced draft fan connected in series. The environmentally friendly hot slag treatment system according to claim 1, wherein the top cover driving mechanism includes a pulley mechanism, a hoisting rope and a hoisting machine, and the hoisting rope is connected to the hoisting machine and wound around the The pulley mechanism is connected to the tilting top cover. The environmentally friendly hot slag treatment system according to claim 6, wherein the top cover driving mechanism further includes a support frame standing next to the hot slag box, and some of the pulleys in the pulley mechanism are located on On the support frame, the pulley mechanism also includes a movable pulley provided on the tilting top cover. The environmentally friendly hot slag treatment system according to claim 1, further comprising a side cover movably disposed at the side opening of the hot slag box. The environment-friendly hot slag treatment system according to claim 8, characterized in that: the side cover is mounted on the hot slag box, or the side cover is installed on the tilting top cover. The method of using the environmentally friendly hot slag treatment system according to any one of claims 1 to 9, characterized in that it includes: 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; After the hot slag is dumped, 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.

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