Air-water mixed steel slag gas quenching granulation device

Abstract

The utility model discloses a kind of gas-water mixed steel slag gas quenching granulation equipment, belong to steel slag gas quenching granulation technical field, including shell, high-pressure inlet pipe, water inlet pipe and high-pressure gas nozzle, high-pressure gas chamber and atomizing water channel are set in shell interior, high-pressure inlet pipe is communicated with high-pressure gas chamber one end, water inlet pipe is communicated with atomizing water channel, high-pressure gas nozzle is communicated with high-pressure gas chamber other end, this gas-water mixed steel slag gas quenching granulation equipment, by the shell of trapezoidal structure, with the flow of high-pressure gas, the pressure of high-pressure gas chamber inner wall to air flow gradually increases, can accelerate the flow rate of air flow, while atomizing water liquid is sprayed through atomizing water nozzle, and atomizing water flow and high-pressure gas flow are same, can avoid the air flow speed drop caused by the mutual intersection of both, solve the steel slag gas quenching granulation equipment of existing most inconvenient to improve air flow speed, while water curtain and high-pressure air jet form intersection, cause wind resistance to greatly promote, make the granulation quality reduce condition.

Description

Technical Field

[0001] This utility model relates to the field of steel slag gas quenching granulation technology, specifically to a gas-water mixed steel slag gas quenching granulation device. Background Technology

[0002] Gas quenching granulation of steel slag is a steel slag treatment process that utilizes high-pressure gas to break down and granulate high-temperature liquid steel slag. The equipment takes advantage of the low intermolecular attraction of molten steel slag at high temperatures. High-pressure gas impacts the liquid slag stream, cutting it into fine droplets. These droplets then contract and solidify into spherical slag particles under surface tension, thus granulating the liquid steel slag. Simultaneously, during the gas quenching process, the liquid slag stream reacts with oxygen in the gas flow and surrounding water, fully dissolving free CaO in the steel slag and improving its stability.

[0003] Most existing steel slag air-quenching granulation equipment uses a scheme of simultaneous flushing with water and high-pressure jets, which can accelerate the cooling of steel slag particles while granulating. For example, comparing the liquid steel slag air-quenching granulation device with Chinese Patent Publication No. CN219972343U, it includes an air-quenching chamber, an air-quenching pipe, and a slag-flowing trough. Both the air-quenching pipe and the slag-flowing trough are located on the side wall of the air-quenching chamber, and the air-quenching pipe is inclined. The air-quenching pipe is located below the slag-flowing trough. A slag-receiving chamber is fixedly provided at the bottom of the air-quenching chamber on the side away from the air-quenching pipe. A barrel is located below the air-quenching chamber, and a filter screen is fixedly provided inside the barrel. Multiple slag discharge hoppers are fixedly inserted into the filter screen and the bottom of the slag-receiving chamber. A rotating rod is rotatably provided inside the barrel, located inside the filter screen.

[0004] While this method allows for thorough separation of steel slag and liquid, effectively reducing water waste, it makes it difficult to increase airflow velocity. The top-down water curtain rinsing method within the air quenching chamber, although increasing the contact area with the steel slag and improving cooling, also creates an intersection between the water curtain and the high-pressure jet, significantly increasing air resistance and reducing the high-pressure gas injection velocity, thus lowering granulation quality. Utility Model Content

[0005] The purpose of this invention is to provide a gas-water mixed steel slag gas quenching granulation device that can mix gas and water to improve the injection speed of high-pressure gas and the granulation quality.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A gas-water mixing steel slag gas quenching granulation device is provided, including a shell, a high-pressure air inlet pipe, a water inlet pipe and a high-pressure air nozzle. The shell has a high-pressure air chamber and an atomizing water channel. The high-pressure air inlet pipe is connected to one end of the high-pressure air chamber, the water inlet pipe is connected to the atomizing water channel, and the high-pressure air nozzle is connected to the other end of the high-pressure air chamber. An atomizing water nozzle is provided at one end of the shell near the high-pressure air nozzle and is connected to the top of the atomizing water channel.

[0008] Furthermore, the shell has a hollow trapezoidal structure, with the high-pressure air inlet pipe and water inlet pipe located at the end with a larger bottom area, and the high-pressure air nozzle located at the end with a smaller bottom area.

[0009] Furthermore, there is a pair of high-pressure air intake pipes symmetrically distributed on both sides of the shell, and multiple high-pressure air nozzles and multiple atomizing water nozzles are distributed in a trapezoidal array at one end of the shell.

[0010] Furthermore, the high-pressure air chamber is located at the top of the atomizing water channel, and the top of the atomizing water nozzle is located between two rows of high-pressure air jets.

[0011] Furthermore, the high-pressure gas nozzle is a Laval nozzle structure.

[0012] Furthermore, two pairs of partitions are fixedly connected to the inner wall of the shell. The two pairs of partitions are symmetrically arranged on both sides of the two high-pressure air inlet pipes. Each pair of partitions is inclined and the distance between the ends near the high-pressure air inlet pipes is smaller than the distance between the ends near the high-pressure air nozzles. The two partitions in the middle are fixedly connected to each other at one end.

[0013] Furthermore, the water inlet pipe has a Y-shaped hollow tubular structure, and the atomizing water channels are symmetrically distributed on both sides at the bottom of the shell.

[0014] Furthermore, symmetrical connectors are provided on both sides of the shell. The connectors are used to rotatably mount the shell onto the air quenching device. The connectors include a mounting base and a rotating shaft. The rotating shaft is fixedly connected to one side of the shell, and the mounting base is rotatably connected to the outer periphery of the rotating shaft.

[0015] The beneficial effects of this invention are as follows: During the gas quenching and granulation of steel slag, the trapezoidal structure of the shell increases the pressure on the airflow from the high-pressure chamber wall as the high-pressure gas flows, accelerating the airflow velocity. Simultaneously, atomized water is sprayed through atomized nozzles and, carried by the high-speed airflow, is sprayed onto the steel slag. This not only increases the impact force but also ensures thorough mixing of the water and the high-temperature liquid steel slag, forming a water film on the surface of the high-temperature granular steel slag, thus accelerating cooling. Furthermore, the integration of the air jet and water jet equipment on the shell ensures that the atomized water flow and the high-pressure airflow flow in the same direction, preventing them from intersecting and causing a decrease in airflow velocity, further improving the quality of gas quenching. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly described below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0019] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0020] Figure 4 Cross-sectional view of the shell structure of this utility model Figure 1 ;

[0021] Figure 5 Cross-sectional view of the shell structure of this utility model Figure 2 ;

[0022] Figure 6 Cross-sectional view of the shell structure of this utility model Figure 3 ;

[0023] Figure 7 Cross-sectional view of the shell structure of this utility model Figure 4 .

[0024] 1. Housing; 10. High-pressure air chamber; 11. Atomizing water channel; 12. Atomizing water nozzle; 2. High-pressure air inlet pipe; 3. Water inlet pipe; 4. High-pressure air nozzle; 5. Partition plate; 6. Connector; 60. Mounting base; 61. Rotating shaft. Detailed Implementation

[0025] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0027] Reference Figures 1 to 5The gas-water mixed steel slag gas quenching granulation equipment shown includes a shell 1, a high-pressure air inlet pipe 2, a water inlet pipe 3, and a high-pressure air nozzle 4. The shell 1 has a high-pressure air chamber 10 and an atomizing water channel 11. The high-pressure air inlet pipe 2 is connected to one end of the high-pressure air chamber 10, the water inlet pipe 3 is connected to the atomizing water channel 11, and the high-pressure air nozzle 4 is connected to the other end of the high-pressure air chamber 10. An atomizing water nozzle 12 is provided at one end of the shell 1 near the high-pressure air nozzle 4, and the atomizing water nozzle 12 is connected to the top of the atomizing water channel 11.

[0028] The housing 1 is a hollow trapezoidal structure. The high-pressure air inlet pipe 2 and the water inlet pipe 3 are both located at the end of the housing 1 with a larger bottom area, while the high-pressure air nozzle 4 is located at the end of the housing 1 with a smaller bottom area.

[0029] During the gas quenching and granulation of steel slag, high-temperature liquid steel slag is first poured into the gas quenching device. Simultaneously, high-pressure gas and atomized water are introduced into the high-pressure gas chamber 10 and atomized water channel 11 respectively through the high-pressure air inlet pipe 2 and water inlet pipe 3. Figure 4 and Figure 5 As shown, B and C represent the flow directions of high-pressure gas and atomized water, respectively. Since the shell 1 is made of 340 stainless steel and has a trapezoidal structure, the top wall of the high-pressure gas chamber 10 inside has a sloping structure and high strength. This causes the cross-sectional area of ​​the high-pressure gas chamber 10 to gradually decrease as the high-pressure gas flows, thereby increasing the pressure of the airflow on the inner wall of the high-pressure gas chamber 10, accelerating the airflow velocity, and spraying it out through the high-pressure gas nozzle 4 to quench the high-temperature liquid steel slag. Simultaneously, atomized water is sprayed out through the atomized water nozzle 12, synchronously sprayed onto the steel slag under the influence of the high-speed airflow. This not only increases the impact force but also ensures thorough mixing of water and high-temperature liquid steel slag, forming a water film on the surface of the high-temperature slag particles, thus cooling it more quickly. Furthermore, the air jetting and water spraying equipment are integrated into the shell, ensuring that the atomized water flow and the high-pressure airflow flow in the same direction, avoiding their intersection and subsequent decrease in airflow velocity, further improving the quality of the air quenching.

[0030] The number of high-pressure air inlet pipes 2 is one pair and symmetrically distributed on both sides of the housing 1. The number of high-pressure air nozzles 4 and atomizing water nozzles 12 are both multiple. The multiple high-pressure air nozzles 4 are distributed in a trapezoidal array at one end of the housing 1.

[0031] The high-pressure air chamber 10 is located at the top of the atomizing water channel 11, and the top of the atomizing water nozzle 12 is located between two rows of high-pressure air nozzles.

[0032] like Figure 6 and Figure 7As shown in the figure, DD is the symmetrical centerline on both sides of the shell. The two symmetrically distributed high-pressure air inlet pipes 2 can increase the air intake speed and ensure the impact force of the high-pressure airflow. The high-pressure airflow is ejected by multiple high-pressure air nozzles 4 working simultaneously, and the atomized water is sprayed synchronously from between the multiple high-pressure air nozzles 4 through the L-shaped atomizing water nozzles 12. This allows the high-pressure airflow to entrain the atomized water to form an air-water mixture, which comes into uniform contact with the steel slag, improving the uniformity of the steel slag particle size. The atomizing water channel 11 is set at the bottom of the high-pressure air chamber 10, which can keep the path of the high-pressure airflow horizontal and reduce the flow rate loss of the high-pressure airflow.

[0033] The high-pressure gas nozzle 4 is a Laval nozzle structure. The high-pressure gas nozzle 4 adopts a Laval nozzle structure, which allows the airflow velocity to vary with the change of the nozzle cross-sectional area, so that the flow velocity of the mixed water and gas reaches 180-250m / s, further increasing the airflow velocity of the gas quenching.

[0034] Two pairs of partitions 5 are fixedly connected to the inner wall of the housing 1. The two pairs of partitions 5 are symmetrically arranged on both sides of the two high-pressure air inlet pipes 2. Each pair of partitions 5 is inclined and the distance between the end near the high-pressure air inlet pipe 2 is smaller than the distance between the end near the high-pressure air nozzle 4. The two partitions 5 in the middle are fixedly connected to each other at one end.

[0035] By arranging two pairs of partitions 5 in a "W" shape, the right-angle space inside the housing 1 on both sides of the high-pressure intake pipe 2 is isolated, which further compresses the internal space of the high-pressure air chamber 10, thereby increasing the airflow velocity and preventing the airflow from generating vortices in the right-angle space on both sides of the high-pressure intake pipe 2, making its flow smoother and preventing the airflow impact force from being lost.

[0036] The water inlet pipe 3 is a Y-shaped hollow tubular structure, and the atomizing water channels 11 are symmetrically distributed on both sides at the bottom of the shell 1.

[0037] The Y-shaped structure divides the end of the water inlet pipe 3 connected to the atomizing water channel 11 into two parts, and the two sides are symmetrically arranged so that the atomized water liquid is evenly divided into two parts when it passes through the water inlet pipe 3 and flows into the atomizing water channel 11 at the same time. This can reduce the time difference between the spraying of water from multiple atomizing water nozzles 12 and further improve the uniformity of the air-water mixture.

[0038] Connectors 6 are symmetrically arranged on both sides of the housing 1. Connectors 6 are used to rotatably install the housing 1 on the gas quenching device. Connectors 6 include mounting base 60 and rotating shaft 61. The rotating shaft 61 is fixedly connected to one side of the housing 1, and the mounting base 60 is rotatably connected to the outer periphery of the rotating shaft 61.

[0039] By fixing the mounting base 60 to the gas quenching device with bolts, the installation of the housing 1 can be completed. Rotating the housing 1 causes the rotating shaft 61 to rotate within the mounting base 60, thereby changing the angle of the housing 1 and controlling the jet flow direction of the gas-water mixture, thus expanding the scope of application.

[0040] The beneficial effects of this invention are as follows: Through the housing 1, during the gas quenching and granulation of steel slag, the trapezoidal structure of the housing 1 allows the pressure on the airflow within the high-pressure chamber 10 to gradually increase as the high-pressure gas flows, thus accelerating the airflow velocity. Simultaneously, atomized water is sprayed through the atomized water nozzle 12, which, under the influence of the high-speed airflow, is sprayed onto the steel slag. This not only increases the impact force but also ensures thorough mixing of the water and the high-temperature liquid steel slag, forming a water film on the surface of the high-temperature granular steel slag, thus accelerating cooling. Furthermore, the integration of the air jet and water jet equipment on the housing 1 ensures that the atomized water flow and the high-pressure airflow flow in the same direction, preventing them from intersecting and causing a decrease in airflow velocity, further improving the quality of gas quenching.

[0041] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this utility model. Furthermore, some terminology used in this application specification and claims is not limiting, but merely for ease of description.

Claims

1. A gas-water mixed steel slag gas quenching granulation device, characterized in that, It includes a housing (1), a high-pressure air inlet pipe (2), a water inlet pipe (3) and a high-pressure air nozzle (4). The housing (1) has a high-pressure air chamber (10) and an atomizing water channel (11) inside. The high-pressure air inlet pipe (2) is connected to one end of the high-pressure air chamber (10), the water inlet pipe (3) is connected to the atomizing water channel (11), and the high-pressure air nozzle (4) is connected to the other end of the high-pressure air chamber (10). The housing (1) has an atomizing water nozzle (12) at one end near the high-pressure air nozzle (4), and the atomizing water nozzle (12) is connected to the top of the atomizing water channel (11).

2. The gas-water mixed steel slag gas quenching granulation equipment according to claim 1, characterized in that, The shell (1) is a hollow trapezoidal structure. The high-pressure air inlet pipe (2) and the water inlet pipe (3) are both located at the end with a larger bottom area of ​​the shell (1), and the high-pressure air nozzle (4) is located at the end with a smaller bottom area of ​​the shell (1).

3. The gas-water mixed steel slag gas quenching granulation equipment according to claim 1, characterized in that, The number of high-pressure air inlet pipes (2) is one pair and symmetrically distributed on both sides of the shell (1). The number of high-pressure air nozzles (4) and atomizing water nozzles (12) are both multiple. Multiple high-pressure air nozzles (4) are distributed in a trapezoidal array at one end of the shell (1).

4. The gas-water mixed steel slag gas quenching granulation equipment according to claim 1, characterized in that, The high-pressure air chamber (10) is located at the top of the atomizing water channel (11), and the top of the atomizing water nozzle (12) is located between the two rows of high-pressure air nozzles.

5. A gas-water mixed steel slag gas quenching granulation device according to any one of claims 1-3, characterized in that, The high-pressure gas nozzle (4) is a Laval nozzle structure.

6. The gas-water mixed steel slag gas quenching granulation equipment according to claim 3, characterized in that, The inner wall of the shell (1) is fixedly connected with two pairs of partitions (5). The two pairs of partitions (5) are symmetrically arranged on both sides of the two high-pressure air inlet pipes (2). Each pair of partitions (5) is inclined and the distance between the end near the high-pressure air inlet pipe (2) is smaller than the distance between the end near the high-pressure air nozzle (4). The two partitions (5) in the middle are fixedly connected to each other at one end.

7. The gas-water mixed steel slag gas quenching granulation equipment according to claim 1, characterized in that, The water inlet pipe (3) is a Y-shaped hollow tubular structure, and the atomizing water channel (11) is symmetrically distributed on both sides at the bottom of the shell (1).

8. The gas-water mixed steel slag gas quenching granulation equipment according to claim 1, characterized in that, Connectors (6) are symmetrically arranged on both sides of the housing (1). The connectors (6) are used to rotatably install the housing (1) on the gas quenching device. The connectors (6) include a mounting base (60) and a rotating shaft (61). The rotating shaft (61) is fixedly connected to one side of the housing (1), and the mounting base (60) is rotatably connected to the outer periphery of the rotating shaft (61).

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