A slag granulation device

Abstract

The present invention relates to the technical field of steel slag processing, and proposes a steel slag granulation device, including a guide plate, one side of the guide plate has a material receiving port, and the other side has a material discharge port and an air outlet, the material discharge port is located directly above the air outlet, the material receiving port is used to receive liquid steel slag, and the air outlet is connected to a high-pressure gas source, and is used to granulate the liquid steel slag discharged from the material discharge port to form steel particles; a cold water pool is located below the guide plate, and is used to receive steel particles; a screening element is arranged in the cold water pool, and the cold water pool is divided into a first pool body and a second pool body, and the first pool body and the second pool body are respectively used to temporarily store steel slag of different particle sizes; one end of the conveying device is arranged in the second pool body, and the other end extends out of the cold water pool. Through the above technical scheme, the problem of uneven product size after steel slag wind quenching and granulation in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the technical field of steel slag processing, and in particular to a steel slag granulation device. Background Art

[0002] In modern industry, the steel industry is of vital importance, but steelmaking produces a large amount of steel slag. Traditional treatment methods have many disadvantages. With the increasing environmental protection requirements and the need for resource recovery, steel slag air quenching technology has emerged. It uses advanced air flow injection and cooling principles to achieve rapid cooling and crushing of steel slag, improving processing efficiency and quality. However, steel slag air quenching may result in uneven particle size. On the one hand, unstable parameters such as air flow velocity and pressure during the air quenching process and different initial states of the steel slag will affect the particle size. Steel slags of different compositions react differently under the same conditions. On the other hand, problems with the design or operation of air quenching equipment, such as unreasonable nozzle distribution and untimely equipment maintenance, can also lead to uneven particles. Summary of the invention

[0003] The invention provides a steel slag granulation device, which solves the problem of uneven size of products after steel slag air quenching granulation in the related art.

[0004] The technical solution of the present invention is as follows:

[0005] A slag granulating device, used for granulating liquid slag, comprising:

[0006] A guide plate, wherein one side of the guide plate has a material receiving port, and the other side has a material discharging port and a gas outlet, wherein the material discharging port is located directly above the gas outlet, the material receiving port is used to receive the liquid steel slag, and the gas outlet is connected to a high-pressure gas source to granulate the liquid steel slag discharged from the material discharging port to form steel pellets;

[0007] A cold water pool, located below the guide plate, for cooling the steel particles;

[0008] A sub-screening element, the sub-screening element is arranged in the cold water tank, and the cold water tank is divided into a first tank body and a second tank body, wherein the first tank body and the second tank body are respectively used to temporarily store the steel slag of different particle sizes;

[0009] A conveying device, one end of which is arranged in the second pool body, and the other end of which extends out of the cold water pool.

[0010] Optionally, the first tank body has a material guiding surface, and the second tank body has a material piling portion, the material guiding surface is used to guide the steel particles falling into the first tank body to the material piling portion, and the conveying device includes:

[0011] A conveyor belt, one end of which is disposed in the second tank body and the other end of which extends out of the cold water tank;

[0012] A fine screen plate, wherein the fine screen plates are in a plurality, one end of each of the fine screen plates is swingably arranged on the conveyor belt, the fine screen plates are evenly spaced and arranged on the conveyor belt, and after the conveyor belt runs, the other ends of each of the fine screen plates are in contact with the material stacking part in sequence;

[0013] An elastic member, both ends of which are respectively connected to the other end of the fine screen plate and the conveyor belt, and is used to provide a force for restoring one end of the fine screen plate after it abuts against the material stacking part.

[0014] Optionally, the sub-screening element comprises:

[0015] A baffle plate, the baffle plate is arranged in the cold water pool, and one end of the baffle plate has a first slide groove;

[0016] A sub-screen plate, one end of which is swingably set on the material guide surface, and the other end of the sub-screen plate has an abutment rod, and the abutment rod penetrates and is slidably set in the first slide groove. After the conveyor belt runs, a plurality of the fine screen plates away from one end of the conveyor belt abut against the abutment rod in turn, driving the sub-screen plate to swing.

[0017] Optionally, the sub-screening element further includes:

[0018] A small baffle, one end of which is arranged on the baffle plate and located above the first chute, is used to prevent the steel particles from directly passing through the first chute into the second pool body.

[0019] Optionally, the guide surface has a sewage outlet, the sewage outlet is connected to the first tank body, one end of the sub-screen plate is located at the lower side of the sewage outlet; the baffle plate is swung away from one end of the sub-screen plate and is arranged in the cold water tank, after the baffle plate swings, the other end of the baffle plate is away from the conveying device, so that the end of the sub-screen plate close to the baffle plate is higher than the other end of the sub-screen plate, and further includes:

[0020] The first telescopic member is arranged in the first pool body, the extended end of the first telescopic member is hingedly arranged on the material baffle plate, and the material baffle plate swings after the first telescopic member is extended and retracted.

[0021] Optionally, it also includes:

[0022] A protective cover is arranged on a side of the guide plate having a discharge port and is located above the first pool body, so that the steel particles enter the first pool body.

[0023] Optionally, the protective cover has a liquid inlet, the cold water pool has a liquid outlet, the liquid outlet is connected to the second pool body, and further comprises:

[0024] An atomizing nozzle is arranged in the protective cover, located above the first pool body, and connected to the liquid inlet.

[0025] Optionally, the protective cover also has a steam outlet.

[0026] Optionally, it also includes:

[0027] A pouring device is arranged on a side of the guide plate having the material receiving port, and is used to pour the liquid slag into the material receiving port.

[0028] Optionally, it also includes:

[0029] A collecting frame is arranged in the cold water pool and is located below one end of the conveying device extending out of the cold water pool.

[0030] The working principle and beneficial effects of the present invention are:

[0031] In the present invention, in order to solve the problem of uneven product size after slag air quenching and granulation in the related art, a slag granulation device is designed. The receiving port of the guide plate is designed as a concave structure. The liquid slag flows into the receiving port through a specific pipe or chute. The discharge port is located on the opposite side of the receiving port and directly above the gas outlet. The gas outlet is connected to a high-pressure gas source device, such as a high-pressure air compressor, through a pressure-resistant pipe. When the liquid steel slag flows out of the discharge port under the action of gravity, the high-pressure gas generated by the high-pressure gas source device is ejected from the gas outlet at a high speed, instantly blowing away and granulating the liquid steel slag to form steel pellets.

[0032] The cold water pool is located below the guide plate, and a certain amount of cold water is injected in advance. When the steel pellets fall from the guide plate, they fall directly into the cold water pool. The cold water can quickly absorb the heat of the steel pellets, causing the steel pellets to cool and solidify quickly. The cold water pool is divided into a first pool body and a second pool body, and the two pool bodies are separated by a sub-screen. The sub-screen can be a partition with a screen with a specific aperture, which allows steel slag of different particle sizes to enter the first pool body and the second pool body for temporary storage. One end of the conveyor belt of the conveying device is set in the second pool body, and the other end extends out of the cold water pool. When the steel pellets accumulate in the second pool body, the conveyor belt starts to transport the steel pellets to subsequent processing procedures or storage areas.

[0033] The advantage is that the liquid slag can be quickly granulated into steel pellets through the cooperation of the guide plate and the high-pressure gas source. Compared with the traditional natural cooling or mechanical crushing method, this granulation method is more efficient and can meet the needs of steel slag treatment in large-scale steel production. The impact of high-pressure gas on liquid steel slag enables the steel slag to be dispersed into small particles, and the quality and uniformity of the steel pellets are improved through the subsequent cooling and screening process. The cold water pool is divided into the first pool body and the second pool body, and the steel pellets can be classified, temporarily stored and sorted according to their particle size, which is convenient for the subsequent targeted treatment and utilization of steel pellets of different particle sizes, and the utilization efficiency of steel slag resources is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0037] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention from another angle;

[0038] Figure 4 For the present invention Figure 2 Enlarged view of point A in the middle.

[0039] In the figure: 1. guide plate, 101. material receiving port, 102. material discharging port, 103. air outlet, 2. cold water tank, 3. screening element, 201. first tank body, 202. second tank body, 4. conveying device, 203. material guiding surface, 204. material stacking part, 401. conveyor belt, 402. fine screen plate, 403. elastic member, 301. material baffle plate, 3011. first slide chute, 302. screening plate, 3021. abutting rod, 303. small baffle plate, 205. sewage outlet, 5. protective cover, 501. liquid inlet, 206. liquid outlet, 6. atomizing nozzle, 502. steam outlet, 7. dumping device, 8. collecting frame. DETAILED DESCRIPTION

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0041] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0042] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0044] Reference Figure 1~Figure 4 , which is the first embodiment of the present invention, proposes a steel slag granulating device for granulating liquid steel slag, including a guide plate 1, a material receiving port 101 on one side of the guide plate 1, and a material discharge port 102 and an air outlet 103 on the other side, the material discharge port 102 is located directly above the air outlet 103, the material receiving port 101 is used to receive liquid steel slag, and the air outlet 103 is connected to a high-pressure gas source, and is used to granulate the liquid steel slag discharged from the material discharge port 102 to form steel particles; a cold water pool 2 is located below the guide plate 1, and is used to cool the steel particles; a screening element 3 is arranged in the cold water pool 2, and the cold water pool 2 is divided into a first pool body 201 and a second pool body 202, and the first pool body 201 and the second pool body 202 are respectively used to temporarily store steel slag of different particle sizes; one end of the conveying device 4 is arranged in the second pool body 202, and the other end extends out of the cold water pool 2.

[0045] In this embodiment, in order to solve the problem of uneven product size after slag air quenching and granulation in the related art, a slag granulation device is designed. The receiving port 101 of the guide plate 1 is designed as a concave structure, which can stably receive the liquid slag discharged from the converter and other equipment. The liquid slag flows into the receiving port 101 through a specific pipe or chute. The discharge port 102 is located on the opposite side of the receiving port 101 and directly above the gas outlet 103. The gas outlet 103 is connected to a high-pressure gas source device, such as a high-pressure air compressor, through a pressure-resistant pipe. When the liquid slag flows out of the discharge port 102 under the action of gravity, the high-pressure gas generated by the high-pressure gas source device is ejected from the gas outlet 103 at a high speed, instantly blowing away and granulating the liquid slag to form steel particles.

[0046] The cold water pool 2 is located below the guide plate 1, and a certain amount of cold water is injected in advance. When the steel particles fall from the guide plate 1, they fall directly into the cold water pool 2. The cold water can quickly absorb the heat of the steel particles, causing the steel particles to cool and solidify quickly. The cold water pool 2 is divided into a first pool body 201 and a second pool body 202, and the two pool bodies are separated by a sub-screen 3. The sub-screen 3 can be a partition with a screen with a specific aperture, which can allow steel slag of different particle sizes to enter the first pool body 201 and the second pool body 202 for temporary storage.

[0047] One end of the conveyor belt 401 of the conveying device 4 is arranged in the second tank body 202, and the other end extends out of the cold water tank 2. When the steel particles are accumulated in the second tank body 202, the conveyor belt 401 is started to transport the steel particles to the subsequent processing process or storage area.

[0048] The advantage is that, through the cooperation of the guide plate 1 and the high-pressure gas source, the liquid steel slag can be quickly granulated into steel particles. Compared with the traditional natural cooling or mechanical crushing method, this granulation method is more efficient and can meet the needs of steel slag treatment in large-scale steel production. The impact of high-pressure gas on liquid steel slag enables the steel slag to be evenly dispersed into small particles, which is beneficial to the subsequent cooling and screening process and improves the quality and uniformity of steel particles.

[0049] The cold water pool 2 provides a rapid cooling environment for the steel particles, which can effectively prevent the steel particles from agglomerating or reacting chemically with other substances at high temperatures, thereby ensuring the quality of the steel particles. The cold water pool 2 is divided into a first pool body 201 and a second pool body 202, and the steel particles can be classified and temporarily stored according to their particle sizes, which facilitates the subsequent targeted treatment and utilization of steel particles of different particle sizes, thereby improving the utilization efficiency of steel slag resources.

[0050] Furthermore, the first pool body 201 has a material guiding surface 203, and the second pool body 202 has a material piling portion 204. The material guiding surface 203 is used to guide the steel particles falling into the first pool body 201 to the material piling portion 204. The conveying device 4 includes a conveyor belt 401, one end of which is arranged in the second pool body 202, and the other end extends out of the cold water pool 2; there are a number of fine screen plates 402, and one end of a number of fine screen plates 402 is swingably set on the conveyor belt 401, and the fine screen plates 402 are evenly spaced on the conveyor belt 401. After the conveyor belt 401 runs, the other ends of the number of fine screen plates 402 are in turn abutted against the material piling portion 204; the two ends of the elastic member 403 are respectively connected to the other end of the fine screen plate 402 and the conveyor belt 401, so as to provide a force for resetting the fine screen plate 402 after one end abuts against the material piling portion 204.

[0051] In this embodiment, the conveyor belt 401 is a core component of the conveying device 4, one end of which is firmly set in the second tank body 202, and the other end extends out of the cold water tank 2. The conveyor belt 401 can be made of high-strength rubber material with anti-skid patterns on the surface to ensure that there is no slipping during the conveying of steel particles. For example, the conveyor belt 401 is driven by a motor, and the motor is connected to the roller of the conveyor belt 401 through a transmission device to drive the conveyor belt 401 to operate continuously.

[0052] One end of a plurality of fine screen plates 402 is swingably arranged on the conveyor belt 401. Assuming that ten fine screen plates 402 are provided, these fine screen plates 402 are evenly spaced and arranged on the conveyor belt 401, and the spacing between adjacent fine screen plates 402 is a certain length. The fine screen plates 402 can be made of corrosion-resistant metal materials, and the size of the screen holes is designed according to the particle size of the steel particles to be screened. When the conveyor belt 401 is running, the fine screen plates 402 move together with the conveyor belt 401.

[0053] The elastic member 403 may be a spring. The two ends of the spring are respectively connected to the other end of the fine screen plate 402 and the conveyor belt 401. When one end of the fine screen plate 402 abuts against the material stacking section 204, the fine screen plate 402 will swing at a certain angle due to the resistance of the material stacking section 204. At this time, the elastic member 403 is stretched to store elastic potential energy. When the fine screen plate 402 leaves the material stacking section 204, the elastic member 403 releases the elastic potential energy, providing a resetting force for the fine screen plate 402, so that it returns to its initial position, ready for the next abutment with the material stacking section 204.

[0054] The advantage is that multiple fine screen plates 402 are evenly spaced and arranged on the conveyor belt 401, so that the steel particles can be screened multiple times during the process of conveying the steel particles. As the conveyor belt 401 runs, the steel particles come into contact with the fine screen plates 402, and the steel particles will be retained on the fine screen plates 402, and the water in the cold water pool 2 will not be taken away by the fine screen plates 402. The swinging design of the fine screen plates 402 makes the screening process more flexible. When the fine screen plates 402 abut against the stockpiling part 204, the swinging fine screen plates 402 can better adapt to the shape and height changes of the stockpiling part 204, ensuring the stability of the screening effect.

[0055] The setting of the elastic member 403 provides the fine screen plate 402 with an automatic resetting function. After the fine screen plate 402 abuts against the stockpiling portion 204, the elastic member 403 can quickly restore the fine screen plate 402 to its initial position. The elastic member 403 can also provide a certain buffering effect for the fine screen plate 402. During the operation of the conveyor belt 401, the fine screen plate 402 may be subjected to the impact and friction of steel particles. The elastic member 403 can absorb these impact forces, reduce the vibration and wear of the fine screen plate 402, extend the service life of the fine screen plate 402, and ensure the stable operation of the conveyor belt 401.

[0056] Furthermore, the sub-screening element 3 includes a material baffle plate 301, which is arranged in the cold water pool 2, and one end of the material baffle plate 301 has a first slide groove 3011; one end of the sub-screening plate 302 is swingably arranged on the material guide surface 203, and the other end of the sub-screening plate 302 has an abutment rod 3021, and the abutment rod 3021 penetrates and is slidably arranged in the first slide groove 3011. After the conveyor belt 401 is running, a plurality of fine screen plates 402 are away from one end of the conveyor belt 401 and abut against the abutment rod 3021 in turn, driving the sub-screening plate 302 to swing.

[0057] In this embodiment, the baffle plate 301 is made of a solid metal material, such as stainless steel. The baffle plate 301 is arranged in the cold water pool 2 to divide the cold water pool 2 into different areas. A first chute 3011 is processed at one end of the baffle plate 301. The first chute 3011 is in a long strip shape, and its width is slightly larger than the diameter of the abutment rod 3021 of the sub-screen plate 302, so as to ensure that the abutment rod 3021 can slide smoothly in the chute.

[0058] The sub-screen plate 302 is also made of corrosion-resistant metal material, and has evenly distributed sieve holes. One end of the sub-screen plate 302 is connected to the material guide surface 203 by a hinge, so that the sub-screen plate 302 can swing around the hinge. The other end of the sub-screen plate 302 is fixedly connected to an abutment rod 3021, which is perpendicular to the sub-screen plate 302. The abutment rod 3021 penetrates and is slidably arranged in the first slide groove 3011. When an external force is applied, the abutment rod 3021 can slide back and forth in the first slide groove 3011, thereby driving the sub-screen plate 302 to swing.

[0059] When the conveyor belt 401 is running, a plurality of fine screen plates 402 move with the conveyor belt 401. As the conveyor belt 401 continues to run, the end of the fine screen plate 402 away from the conveyor belt 401 will sequentially abut against the abutment rod 3021. For example, when the first fine screen plate 402 contacts the abutment rod 3021, it will push the abutment rod 3021 to slide to one side in the first chute 3011, thereby driving the sub-screen plate 302 to swing around the hinge at a certain angle. As the subsequent fine screen plates 402 contact one another, the sub-screen plate 302 will continue to swing, thereby achieving dynamic screening of steel particles.

[0060] The advantage is that, by the sequential abutment between the fine screen plate 402 and the abutment rod 3021, the sub-screen plate 302 is driven to swing, thereby realizing dynamic screening of steel particles. Compared with the traditional static screen plate, this dynamic screening method can better avoid the blockage of the screen holes and improve the screening efficiency. The steel particles are constantly subjected to the swinging effect on the sub-screen plate 302, and can be more evenly distributed on the screen plate, which increases the chances of the steel particles passing through the screen holes, thereby improving the screening speed and effect. The swinging of the sub-screen plate 302 can also better separate steel particles of different particle sizes. During the swinging process, steel particles with smaller particle sizes are more likely to pass through the screen holes, while steel particles with larger particle sizes will be left on the sub-screen plate 302, further improving the screening accuracy.

[0061] The combined design of the baffle plate 301 and the sub-screen plate 302 has a compact structure and occupies little space. The cooperation of the first slide trough 3011 and the abutment rod 3021 makes the swing of the sub-screen plate 302 more stable and reliable, without shaking or offset. This compact and stable structural design can achieve efficient screening function in a limited space and is suitable for slag granulation devices of various sizes. The baffle plate 301 not only supports the sub-screen plate 302, but also blocks the splashing of steel particles during the screening process, ensuring that the steel particles can smoothly pass through the sub-screen plate 302 into the corresponding pool body. This design improves the safety and stability of the equipment and reduces the loss and waste of steel particles.

[0062] The structure is relatively simple, and the connection relationship between the various components is clear, which is convenient for maintenance and repair. If the sub-screen plate 302 is found to be blocked or damaged during operation, it can be easily cleaned or replaced. At the same time, the cooperation between the first slide 3011 and the abutment rod 3021 also makes it easier to adjust the swing amplitude of the sub-screen plate 302, and it only needs to adjust the contact position or strength between the fine screen plate 402 and the abutment rod 3021.

[0063] Furthermore, the screening element 3 also includes a small baffle 303 , one end of which is arranged on the baffle plate 301 and located above the first chute 3011 , so as to prevent steel particles from directly passing through the first chute 3011 into the second pool body 202 .

[0064] In this embodiment, the small baffle 303 is made of a corrosion-resistant metal material, such as aluminum alloy. One end of the small baffle 303 is firmly mounted on the baffle plate 301 by welding or bolting, and is located above the first chute 3011. The length of the small baffle 303 can be adjusted according to actual needs. The width of the small baffle 303 is slightly larger than the width of the first chute 3011 to ensure that the first chute 3011 can be covered.

[0065] For example, when steel particles flow from the first tank body 201 to the second tank body 202 under the action of water flow and gravity, if there is no small baffle 303, some smaller steel particles may directly pass through the first chute 3011 and enter the second tank body 202, thereby bypassing the screening of the sub-screening plate 302. The existence of the small baffle 303 can effectively block these steel particles, ensuring that all steel particles must be screened by the sub-screening plate 302 before entering the second tank body 202.

[0066] The advantage is that the small baffle 303 can effectively prevent the steel particles from directly passing through the first chute 3011 and entering the second tank body 202, thereby ensuring that all the steel particles entering the second tank body 202 are screened by the screening plate 302. This is very important for improving the screening accuracy of steel particles, and can ensure that steel particles of different particle sizes are accurately classified and temporarily stored, providing better quality raw materials for subsequent processing and utilization.

[0067] The small baffle 303 is very practical. During the operation of the slag granulation device, the small baffle 303 can continue to function without complicated operation and maintenance. Even in harsh working environments, the small baffle 303 can maintain stable performance and ensure the normal operation of the equipment.

[0068] Furthermore, the guide surface 203 has a sewage outlet 205, which is connected to the first pool body 201, and one end of the sub-screen plate 302 is located at the lower side of the sewage outlet 205; the baffle plate 301 is swingably arranged in the cold water pool 2 away from one end of the sub-screen plate 302. After the baffle plate 301 swings, the other end of the baffle plate 301 is away from the conveying device 4, so that the end of the sub-screen plate 302 close to the baffle plate 301 is higher than the other end of the sub-screen plate 302. It also includes a first telescopic member, which is arranged in the first pool body 201, and the protruding end of the first telescopic member is hinged on the baffle plate 301. After the first telescopic member is extended and retracted, the baffle plate 301 swings.

[0069] In this embodiment, the guide surface 203 in the first tank body 201 is set at a certain slope so that the steel particles can slide smoothly on its surface. A sewage outlet 205 is set on the guide surface 203, and the sewage outlet 205 is located at a lower position close to one end of the sub-screen plate 302. The sewage outlet 205 is circular and is equipped with an openable valve. When impurities need to be discharged, the valve is opened, and the impurities can flow into the first tank body 201 through the sewage outlet 205.

[0070] One end of the baffle plate 301 away from the sub-screen plate 302 is connected to the inner wall of the cold water pool 2 through a hinge, so that the baffle plate 301 can swing around the hinge. When the baffle plate 301 swings, its other end will move away from or close to the conveying device 4. For example, a hydraulic cylinder is used as the first telescopic member, the hydraulic cylinder is installed in the first pool body 201, and its protruding end is hinged on the baffle plate 301 through a pin. When the hydraulic cylinder is extended and retracted, the baffle plate 301 will swing accordingly. Assume that when the hydraulic cylinder contracts, it drives the baffle plate 301 to swing counterclockwise, so that the other end of the baffle plate 301 is away from the conveying device 4. At this time, the end of the sub-screen plate 302 close to the baffle plate 301 will be higher than the other end of the sub-screen plate 302, forming an inclined angle, which is conducive to the flow of larger-sized steel particles on the sub-screen plate 302.

[0071] The advantage is that the slope design of the guide surface 203 can make the steel pellets slide naturally toward the stacking part 204 under the action of gravity, thereby improving the conveying efficiency of the steel pellets and reducing the accumulation of the steel pellets in the first tank body 201. At the same time, the smooth surface material can reduce the friction between the steel pellets and the guide surface 203, further promoting the flow of the steel pellets.

[0072] The setting of the sewage outlet 205 can timely discharge impurities in the first tank body 201, keep the water quality in the first tank body 201 clean, and facilitate the cooling and screening of steel particles. By controlling the opening and closing of the sewage outlet 205 by a valve, sewage discharge operations can be flexibly performed according to actual conditions, avoiding unnecessary waste of water resources.

[0073] The first telescopic member (such as a hydraulic cylinder) is provided so that the baffle plate 301 can swing as required, thereby flexibly adjusting the angle of the sub-screen plate 302. In different working stages, the screening effect of steel particles can be optimized by adjusting the angle of the sub-screen plate 302. For example, when the flow rate of steel particles is large, the inclination angle of the sub-screen plate 302 can be appropriately increased to speed up the screening speed of steel particles; when the flow rate of steel particles is small, the inclination angle of the sub-screen plate 302 can be reduced to improve the screening accuracy.

[0074] The swing of the baffle plate 301 can also conveniently clean and maintain the sub-screen plate 302. When it is necessary to clean the blockage on the sub-screen plate 302 or replace the sub-screen plate 302, the baffle plate 301 can be swung to a suitable position to provide a better operating space for the operator.

[0075] Furthermore, it also includes a protective cover 5, which is arranged on the side of the guide plate 1 having the discharge port 102 and is located above the first tank body 201, so that the steel particles enter the first tank body 201.

[0076] In this embodiment, the protective cover 5 is made of a high-strength, high-temperature resistant metal material, such as alloy steel. The protective cover 5 has a cubic structure and is located above the first tank body 201. The protective cover 5 is fixed to the edge of the cold water tank 2 and the side of the guide plate 1 by bolts to ensure that it is firmly and stably installed. The protective cover 5 can effectively prevent the steel particles from splashing out of the first tank body 201 during the granulation process, and can also reduce the impact of noise and dust generated during the granulation of steel particles on the surrounding environment.

[0077] The advantage is that the protective cover 5 can effectively prevent the steel particles from splashing during the granulation process, thus avoiding damage to the operator and surrounding equipment. During the slag granulation process, the steel particles fly out at high speed. Without the protection of the protective cover 5, the steel particles may splash to the surrounding working area, posing a threat to the safety of the operator. At the same time, the splashing steel particles may also damage the surrounding equipment and facilities, increasing the maintenance cost.

[0078] The design of the protective cover 5 can guide the steel particles to fall accurately into the first tank body 201, thereby improving the collection efficiency of the steel particles. During the slag granulation process, the falling trajectory of the steel particles may be affected by factors such as airflow and gravity. Without the guidance of the protective cover 5, the steel particles may be scattered to the surrounding area, resulting in a decrease in the collection efficiency of the steel particles. The presence of the protective cover 5 can guide the steel particles to the first tank body 201, ensuring that the steel particles can smoothly enter the cold water tank 2 for cooling and screening.

[0079] Furthermore, the protective cover 5 has a liquid inlet 501, the cold water pool 2 has a liquid outlet 206, and the liquid outlet 206 is connected to the second pool body 202, and further includes:

[0080] The atomizing nozzle 6 is arranged in the protective cover 5 , located above the first pool body 201 , and connected to the liquid inlet 501 .

[0081] In this embodiment, the liquid inlet 501 on the protective cover 5 is arranged on one side of the top of the protective cover 5. The liquid inlet 501 is a circular pipe interface, which is connected to the external water supply system through a pressure-resistant hose. The liquid outlet 206 on the cold water pool 2 is arranged on one side of the bottom of the second pool body 202. The liquid outlet 206 is a circular pipe interface, which is connected to the external water treatment system through a pipe.

[0082] The atomizing nozzle 6 is installed inside the protective cover 5 and is located above the first tank body 201. The number of the atomizing nozzles 6 can be set according to actual needs. The atomizing nozzle 6 is connected to the liquid inlet 501 through a pipeline. When water enters from the liquid inlet 501, the atomizing nozzle 6 atomizes the water into tiny particles and sprays them toward the first tank body 201. The water mist of these tiny particles can effectively absorb the heat and dust generated during the granulation of steel slag, reduce the temperature of steel particles, and reduce the impact of dust on the surrounding environment.

[0083] The advantage is that the atomizing nozzle 6 atomizes water into tiny particles and then sprays them on the top of the first tank body 201, which can fully contact with the steel pellets, quickly absorb the heat of the steel pellets, and achieve efficient cooling. Steel slag generates a lot of heat during the granulation process. If it is not cooled in time, it may affect the quality and performance of the steel pellets. Through the cooling effect of the atomized water mist, the temperature of the steel pellets can be quickly reduced to ensure the stability of the quality of the steel pellets.

[0084] The arrangement of the liquid inlet 501 and the liquid outlet 206 realizes the recycling of water. After the water entering from the liquid inlet 501 is sprayed by the atomizing nozzle 6, part of it is absorbed by the steel particles and evaporated, and the other part falls into the first tank body 201 together with the steel particles. Then, the water flows from the first tank body 201 into the second tank body 202, and then is discharged to the external water treatment system through the liquid outlet 206 for treatment. The treated water can be recycled again, saving water resources.

[0085] The high-pressure atomization of the atomizing nozzle 6 can make the water mist evenly distributed above the first tank body 201, avoiding local overheating or overcooling, and improving the reliability and stability of the equipment. In the process of slag granulation, if the cooling is uneven, the quality of the steel pellets may be unstable, and even defects such as cracks may appear. The uniform cooling effect of the atomized water mist can effectively avoid this situation and ensure the stability of the quality of the steel pellets.

[0086] Furthermore, the protective cover 5 also has a steam outlet 502 .

[0087] In this embodiment, the steam outlet 502 on the protective cover 5 is arranged on the other side of the top of the protective cover 5, opposite to the liquid inlet 501. The steam outlet 502 is a circular pipe interface. The steam outlet 502 is connected to a high temperature resistant and corrosion resistant steam discharge pipe, which guides the steam to a special processing device or discharge area.

[0088] When the slag is discharged from the discharge port 102 of the guide plate 1 and granulated by the high-pressure gas source, a large amount of steam will be generated due to the high temperature of the slag and the contact with cold water during the process of falling into the first pool body 201. The steam will gather inside the protective cover 5. If it is not discharged in time, it may affect the effect of slag granulation and even cause safety hazards to the equipment and operators.

[0089] The advantage is that timely discharge of steam can avoid excessive pressure inside the protective cover 5, thereby reducing the risk of explosion or damage to the equipment. If the steam generated during the slag granulation process cannot be discharged in time, it will accumulate in the protective cover 5, causing the pressure to continue to rise. The setting of the steam outlet 502 can effectively discharge the steam, keep the pressure inside the protective cover 5 within a safe range, and ensure the safe operation of the equipment.

[0090] At the same time, exhausting steam can also reduce the harm of steam to operators. High-temperature steam may cause burns and other injuries to operators. By exhausting steam in time, the risk of operators being exposed to steam can be reduced and the safety of the working environment can be improved.

[0091] Furthermore, it also includes a dumping device 7 , which is arranged on a side of the guide plate 1 having the material receiving port 101 and is used to pour the liquid slag into the material receiving port 101 .

[0092] In this embodiment, the dumping device 7 is mainly composed of a support frame, a rotating mechanism and a hopper. The support frame is welded from solid steel and is installed on the side of the guide plate 1 having the material receiving port 101. The rotating mechanism is installed on the support frame and includes a motor, a reducer and a rotating shaft. The hopper is connected to the rotating shaft through a connecting piece and can be tilted under the drive of the rotating mechanism. When it is necessary to pour the liquid slag into the material receiving port 101, the motor is started and the rotating shaft is driven to rotate through the reducer, thereby tilting the hopper and pouring the liquid slag into the material receiving port 101 of the guide plate 1.

[0093] The advantage is that the dumping device 7 can quickly and accurately pour the liquid slag into the receiving port 101, thereby improving the feeding efficiency of the slag granulation device. Compared with the traditional manual feeding method, the dumping device 7 can greatly reduce the feeding time and labor cost, and also reduce the labor intensity of the operator. The large-capacity design of the hopper can accommodate more liquid slag at one time, reducing the number of feeding times and further improving production efficiency.

[0094] Furthermore, it also includes a collecting frame 8, which is arranged in the cold water pool 2 and is located below one end of the conveying device 4 extending out of the cold water pool 2.

[0095] In this embodiment, the collecting frame 8 is made of a solid metal material, such as a high-strength steel plate. The collecting frame 8 can be in the shape of a cuboid or a cube, and has a certain depth and capacity to ensure that the steel particles output from the conveying device 4 can be accommodated. The collecting frame 8 is arranged in the cold water pool 2, below the end of the conveying device 4 extending out of the cold water pool 2. The collecting frame 8 is connected to the inner wall of the cold water pool 2 through a fixed bracket to ensure that it remains stable during the process of receiving the steel particles. The fixed bracket can be welded or bolted to firmly fix the collecting frame 8 in a suitable position in the cold water pool 2.

[0096] The advantage is that the collecting frame 8 can collect the steel pellets output from the conveying device 4 in a specific area, preventing the steel pellets from being scattered around the cold water pool 2, making the collection of steel pellets more orderly and standardized. This not only facilitates the management of steel pellets by operators, but also reduces the loss and waste of steel pellets.

[0097] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A slag granulating device for granulating liquid slag, characterized in that: include: A guide plate (1), wherein one side of the guide plate (1) has a material receiving port (101), and the other side has a material discharge port (102) and a gas outlet (103), the material discharge port (102) is located directly above the gas outlet (103), the material receiving port (101) is used to receive the liquid steel slag, and the gas outlet (103) is connected to a high-pressure gas source and is used to granulate the liquid steel slag discharged from the material discharge port (102) to form steel pellets; A cold water pool (2), the cold water pool (2) being located below the guide plate (1) and being used for cooling the steel particles; a screening element (3), the screening element (3) being arranged in the cold water pool (2) to divide the cold water pool (2) into a first pool body (201) and a second pool body (202), the first pool body (201) and the second pool body (202) being respectively used for temporarily storing the steel slag of different particle sizes; A conveying device (4), one end of the conveying device (4) being arranged in the second pool body (202) and the other end extending out of the cold water pool (2); The first tank body (201) has a material guiding surface (203), the second tank body (202) has a material piling portion (204), the material guiding surface (203) is used to guide the steel particles falling into the first tank body (201) to the material piling portion (204), and the conveying device (4) comprises: a conveyor belt (401), wherein one end of the conveyor belt (401) is arranged in the second pool body (202), and the other end extends out of the cold water pool (2); A fine screen plate (402), wherein the fine screen plates (402) are provided in a plurality, one end of each of the fine screen plates (402) is swingably disposed on the conveyor belt (401), the fine screen plates (402) are evenly spaced and arranged on the conveyor belt (401), and after the conveyor belt (401) runs, the other ends of each of the fine screen plates (402) are in contact with the material stacking portion (204) in sequence; an elastic member (403), the two ends of the elastic member (403) being respectively connected to the other end of the fine screen plate (402) and the conveyor belt (401), and being used to provide a force for restoring one end of the fine screen plate (402) after it abuts against the material stacking portion (204); The sub-screening element (3) comprises: A material baffle plate (301), the material baffle plate (301) being arranged in the cold water pool (2), and one end of the material baffle plate (301) being provided with a first slide groove (3011); A sub-screening plate (302), one end of which is swingably arranged on the material guiding surface (203), and the other end of which is provided with an abutment rod (3021), and the abutment rod (3021) passes through and is slidably arranged in the first slide groove (3011); after the conveyor belt (401) runs, one end of a plurality of the fine screen plates (402) away from the conveyor belt (401) abuts against the abutment rod (3021) in turn, thereby driving the sub-screening plate (302) to swing.

2. A slag granulation device according to claim 1, characterized in that: The sub-screening element (3) further comprises: A small baffle (303), one end of which is arranged on the baffle plate (301) and located above the first chute (3011), and is used to prevent the steel particles from directly passing through the first chute (3011) and entering the second tank body (202).

3. The slag granulation device according to claim 1, characterized in that: The material guide surface (203) has a sewage outlet (205), the sewage outlet (205) is connected to the first tank body (201), and one end of the sub-screen plate (302) is located below the sewage outlet (205); the material baffle plate (301) is swingably arranged in the cold water tank (2) away from one end of the sub-screen plate (302); after the material baffle plate (301) swings, the other end of the material baffle plate (301) is away from the conveying device (4), so that the end of the sub-screen plate (302) close to the material baffle plate (301) is higher than the other end of the sub-screen plate (302), and further comprises: A first telescopic member, wherein the first telescopic member is arranged in the first pool body (201), and an extended end of the first telescopic member is hingedly arranged on the material blocking plate (301); after the first telescopic member is extended and retracted, the material blocking plate (301) swings.

4. The slag granulation device according to claim 1, characterized in that: Also includes: A protective cover (5), the protective cover (5) being arranged on a side of the guide plate (1) having a discharge port (102) and being located above the first tank body (201), so that the steel particles enter the first tank body (201).

5. The slag granulation device according to claim 4, characterized in that: The protective cover (5) has a liquid inlet (501), the cold water pool (2) has a liquid outlet (206), the liquid outlet (206) is connected to the second pool body (202), and further comprises: An atomizing nozzle (6), wherein the atomizing nozzle (6) is arranged in the protective cover (5), located above the first pool body (201), and connected to the liquid inlet (501).

6. The slag granulation device according to claim 4, characterized in that: The protective cover (5) also has a steam outlet (502).

7. The slag granulation device according to claim 1, characterized in that: Also includes: A pouring device (7), the pouring device (7) being arranged on a side of the guide plate (1) having the material receiving opening (101), and being used for pouring the liquid slag into the material receiving opening (101).

8. The slag granulation device according to claim 1, characterized in that: Also includes: A collecting frame (8), the collecting frame (8) being arranged in the cold water pool (2) and located below the end of the conveying device (4) extending out of the cold water pool (2).

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