Converter steel slag hot disintegration device

Abstract

The utility model relates to a converter steel slag hot disintegration device which comprises a hot slag basin, a treatment tank; a cover body; the device further comprises a water injection nozzle. A water outlet; the non-return section is a section of channel, one end of the non-return section is communicated with the side wall of the treatment tank, and steam generated by water spraying in the treatment tank can be discharged according to the pressure in the treatment tank; the steam treatment tank has the beneficial effects that the steam is accumulated in the treatment tank by utilizing the non-return section, and the effects that the steam content is not reduced and the normal-pressure hot stuffiness is not reduced due to the negative pressure of the discharge section are ensured.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgical technology, specifically relating to a converter steel slag hot quenching device. Background Technology

[0002] Steel slag is a waste residue produced in the metallurgical industry, accounting for 8% to 15% of crude steel production. Currently, steel slag hot quenching treatment includes methods such as pressurized hot quenching tanks, atmospheric pressure hot quenching tanks, and atmospheric pressure hot quenching pools. This process involves pouring high-temperature steel slag into a hot quenching device, spraying water onto the steel slag through a water spraying system, and utilizing the large amount of saturated steam generated by the residual heat of the steel slag itself to rapidly decompose and pulverize the steel slag. The treated steel slag is then screened and extracted.

[0003] One method involves spraying water onto the surface of lumpy, high-temperature steel slag to generate steam. This steam is then trapped inside the tank and used to decompose f-CaO and f-MgO, causing the slag to self-decompose and pulverize. However, this method has drawbacks such as high investment costs, easily damaged equipment, and high maintenance costs. Another method involves spraying water onto the surface of lumpy, high-temperature steel slag. The generated steam is then drawn away by a blower, creating a negative pressure inside the tank or pool. Steam cannot be retained, and the decomposition of f-CaO and f-MgO relies solely on water penetrating into the slag. This method is inefficient and sometimes fails to decompose the Ca and Mg ions inside the slag, significantly impacting subsequent crushing processes.

[0004] Therefore, there is an urgent need for a device that can effectively retain water vapor in the tank under normal pressure, improve the efficiency of the normal pressure hot quenching method, and effectively dissolve Ca and Mg ions inside the steel slag, thus solving the problems existing in the current technology. Summary of the Invention

[0005] To overcome the problems of pressurized hot stagnation and atmospheric pressure (no pressure, only atmospheric pressure) hot stagnation in existing technologies, this utility model utilizes the combination of a water seal and an openable baffle to maintain a certain steam content in the stagnation tank, thereby simplifying the safety issues of pressurized systems while improving the efficiency of hot slag pyrolysis and pulverization.

[0006] The technical solution adopted in this utility model is: a converter slag hot quenching device, comprising:

[0007] Hot slag basin, a basin containing hot slag to be processed;

[0008] The treatment tank has an upward-facing opening, allowing the hot slag basin to enter.

[0009] The lid can be detachably placed over the opening of the treatment tank to seal the treatment tank;

[0010] Also includes:

[0011] A water spray nozzle, located on the cover or treatment tank, sprays water toward the hot slag basin;

[0012] A drain outlet, located at the bottom of the treatment tank, can be opened and closed to drain the water accumulated inside the treatment tank;

[0013] The check section is a channel with one end connected to the side wall of the treatment tank, which can discharge the steam generated by water spraying in the treatment tank according to the pressure inside the treatment tank.

[0014] The external discharge section is connected to the other end of the check section, and uses wind power to generate negative pressure to extract the steam to the outside.

[0015] Furthermore, it also includes:

[0016] An exhaust port is located on the cover and is connected to the external exhaust section, through which gas is extracted from the top of the treatment tank.

[0017] Furthermore,

[0018] The check segment includes:

[0019] The outer casing is a pipe with a cross-sectional shape of one of rectangle, circle, ellipse, or triangle;

[0020] The bracket is a rigid frame that is fixed to the inner periphery of the outer shell and protrudes inward.

[0021] The cover plate is a plate-like body that can be flipped to the side where the steam is discharged and can cover the support.

[0022] When the pressure inside the treatment tank is generated due to steam evaporation and is greater than the external atmospheric pressure, the steam overcomes the component of the gravity force on the cover plate, causing it to flip over.

[0023] Furthermore,

[0024] The cover plate is tilted towards the disposal tank when it is stationary.

[0025] Furthermore,

[0026] The cover plate has an angle of 30 to 60 degrees in the horizontal direction.

[0027] Furthermore,

[0028] The outer shell has a rectangular cross-sectional shape.

[0029] Furthermore,

[0030] A sealing part is also provided between the treatment tank and the cover, the sealing part comprising:

[0031] A water seal tank is a tank body fixed around the opening of the treatment tank;

[0032] The water seal plate is a rigid protrusion fixed to the periphery of the cover.

[0033] When the cover is placed over the opening of the treatment tank, the water seal plate extends into the water seal groove, and the water seal groove contains water, forming a seal.

[0034] Furthermore,

[0035] The depth of the water seal trough is controlled by the pressure of the steam that opens the check section, and the water pressure of the communicating vessel structure formed by the water seal plate and the water seal trough is greater than the pressure of the steam that opens the check section.

[0036] Furthermore,

[0037] The pressure of the wind in the exhaust section is less than the pressure at which the steam opens the check valve.

[0038] The advantages of this utility model over the prior art are as follows: 1) The check valve is used to store steam in the treatment tank, ensuring that the steam content will not be reduced due to the negative pressure of the exhaust section, thus reducing the effect of atmospheric pressure heat stagnation; 2) The exhaust port is used to discharge hydrogen gas generated by water at high temperature, reducing the risk of heat stagnation; 3) A check valve that uses gravity to control pressure is designed and cooperates with the sealing part to increase the steam content in the treatment tank. Attached Figure Description

[0039] Figure 1 This is a front view of a specific embodiment of the present utility model;

[0040] Figure 2 This is a partial enlarged view of the sealing part according to a specific embodiment of the present utility model;

[0041] Figure 3 This is a partial enlarged view of the check valve section according to a specific embodiment of this utility model;

[0042] Figure 4 This is a top view of a check valve section structure according to a specific embodiment of the present invention;

[0043] The annotation is represented as follows:

[0044] 100 - Treatment tank; 110 - Cover; 120 - Spray nozzle; 130 - Vent; 140 - Drain; 150 - Hot slag basin;

[0045] 200 - Check valve section; 210 - Housing; 220 - Bracket; 230 - Cover plate;

[0046] 300-outer discharge section;

[0047] 400 - Sealing part; 410 - Water seal groove; 420 - Water seal plate. Detailed Implementation

[0048] The technical solutions in the embodiments are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0049] To overcome the problems of pressurized and atmospheric pressure (no pressure, only atmospheric pressure) hot stagnation in existing technologies, this invention utilizes a combination of a water seal and an openable baffle to maintain a certain steam content in the stagnation tank. This simplifies the safety issues associated with pressurized systems while improving the efficiency of hot slag pyrolysis and pulverization. Please refer to [link / reference]. Figures 1 to 4 The technical solution adopted in this specific embodiment is: a converter slag hot quenching device, comprising:

[0050] Hot slag basin 150 is a basin containing hot slag to be processed; in some embodiments, hot slag basin 150 may also be a tank, which should be considered an equivalent technical feature.

[0051] The treatment tank 100 has an upward-facing opening, allowing the hot slag basin 150 to enter; since the hot slag basin 150 needs to be hoisted in, it generally has an upward-facing opening.

[0052] The cover 110 is detachable and fits onto the opening of the disposal container 100 to seal the disposal container 100; please refer to [link / reference]. Figure 1 In this embodiment, the cover 110 is opened and closed on the upper part of the hot slag basin 150 by a drive flipping mechanism. Of course, sealing can also be achieved by hoisting or sliding.

[0053] Also includes:

[0054] The water nozzle 120 is located on the cover 110 or the treatment tank 100 and sprays water toward the hot slag basin 150;

[0055] The drain outlet 140 is located at the bottom of the treatment tank 100 and can be opened and closed to drain the water accumulated in the treatment tank 100;

[0056] The check section 200 is a channel with one end connected to the side wall of the treatment tank 100. It can discharge the steam generated by water spraying in the treatment tank 100 according to the pressure inside the treatment tank 100. In this embodiment, the check section 200 is used to block the steam in the treatment tank 100, so as to avoid the negative pressure generated by the exhaust section 300 when evacuating air, which would reduce the steam content and decrease the heat sealing effect.

[0057] The external discharge section 300 is connected to the other end of the check section 200, and uses wind power to generate negative pressure to extract the steam to the outside.

[0058] In other embodiments, it also includes:

[0059] An exhaust port 130 is located on the cover 110 and connected to the external exhaust section 300, which helps to extract gas from the top of the treatment tank 100. The temperature of the hot slag is high, reaching up to 1500 degrees Celsius. At this temperature, a chemical reaction occurs between water and the high-temperature slag, producing hydrogen gas. This hydrogen gas is detrimental to the stability of the overall device. Although an external exhaust port exists to allow hydrogen to escape, hydrogen accumulation at high temperatures still poses a safety hazard. To avoid this safety hazard, hydrogen tends to accumulate at the top, hence the exhaust port 130 is provided to reduce the hydrogen content.

[0060] In other embodiments, specifically,

[0061] The check segment 200 includes:

[0062] The outer casing 210 is a pipe with a cross-sectional shape of one of rectangle, circle, ellipse, or triangle;

[0063] The bracket 220 is a rigid frame that is fixed to the inner periphery of the outer casing 210 and protrudes inward. In this embodiment, the bracket 220 can be similar to a door frame, defining the position of the cover plate 230. Alternatively, the bracket 220 can be located within the outer casing 210 to achieve the same purpose of defining the position. Please refer to [link / reference]. Figure 3 and 4 A structural form of the outer shell 210 is proposed. If the outer shell 210 is in the form of a fence, it can also achieve the positioning function, and should be understood as an equivalent technical feature.

[0064] The cover plate 230 is a plate-shaped body that can be flipped to the steam exhaust side and can cover the support 220;

[0065] When the pressure inside the treatment tank 100 due to steam evaporation exceeds the external atmospheric pressure, the steam overcomes the component of gravity in the cover plate 230, causing it to flip. In this embodiment, the flipping is generally considered to be a downward and upward movement perpendicular to the direction of gravity, utilizing the component of gravity to prevent steam leakage and create a certain accumulation.

[0066] In some preferred embodiments

[0067] The cover plate 230 is tilted toward the disposal tank 100 when it is stationary.

[0068] Specifically, it could be,

[0069] The cover plate 230 has an angle of 30 to 60 degrees in the horizontal direction.

[0070] In some preferred embodiments

[0071] The outer shell 210 has a rectangular cross-sectional shape.

[0072] In other embodiments, the internal pressure can also be controlled to improve the sealing effect.

[0073] A sealing part 400 is further provided between the treatment tank 100 and the cover 110, the sealing part 400 comprising:

[0074] The water seal trough 410 is a trough body fixed around the opening of the treatment tank 100;

[0075] The water seal plate 420 is a rigid protrusion fixed to the periphery of the cover 110;

[0076] When the cover 110 is placed over the opening of the treatment tank 100, the water seal plate 420 extends into the water seal groove 410, and water is present in the water seal groove 410, forming a seal. The water seal can control the pressure. Because of its structure similar to communicating vessels, the depth of the water directly determines the maximum internal pressure range. By adjusting the water pressure and the opening and closing force of the check valve 200, the internal pressure can be maintained at approximately one atmosphere or slightly higher than one atmosphere, thus meeting the requirements for vapor concentration without causing safety hazards due to excessive pressure.

[0077] In some other embodiments, preferred,

[0078] The depth of the water seal trough 410 is controlled by the pressure of the steam that opens the check section 200, and the water pressure of the communicating vessel structure formed by the water seal plate 420 and the water seal trough 410 is greater than the pressure of the steam that opens the check section 200.

[0079] In some other embodiments, preferred,

[0080] The pressure of the wind in the exhaust section 300 is less than the pressure at which the steam opens the check section 200.

[0081] In specific operation: Hot slag inside the hot slag basin 150 is hoisted into the treatment tank 100, and the cover 110 is closed to achieve a preliminary sealing state. Water is sprayed from the spray nozzle 120. After the water comes into contact with the hot slag, a large amount of steam is generated, gradually increasing the steam concentration and pressure inside the treatment tank 100. When the pressure exceeds atmospheric pressure, the check valve 200 opens and closes. In some embodiments, the cover plate 230 is raised and overflows due to the steam pressure. The exhaust section 300 discharges the overflowing steam, maintaining a fixed steam content inside the treatment tank 100. When the critical state is exceeded, the communicating vessel structure in the sealing part 400 assists in depressurization, ensuring the safety of the overall equipment.

[0082] The beneficial effects are as follows: the check valve is used to store steam in the treatment tank, ensuring that the steam content will not be reduced due to the negative pressure of the exhaust section, thus reducing the effect of atmospheric pressure heat stagnation; the exhaust port is used to discharge hydrogen gas generated by water at high temperature, reducing the risk of heat stagnation; a check valve that uses the component of gravity to control the pressure is designed and works in conjunction with the sealing part to increase the steam content in the treatment tank.

[0083] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A converter slag hot quenching device, comprising: Hot slag basin (150), a basin containing hot slag to be processed; The treatment tank (100) has an upward-facing opening that allows the hot slag basin (150) to enter; The cover (110) can be detachably placed over the opening of the treatment container (100) to close the treatment container (100); Its characteristic is that it further includes: A water nozzle (120) is located on the cover (110) or the treatment tank (100) and sprays water toward the hot slag basin (150); A drain outlet (140) is located at the bottom of the treatment tank (100) and can be opened and closed to drain the water accumulated in the treatment tank (100); The check section (200) is a channel with one end connected to the side wall of the treatment tank (100). It can discharge the steam generated by water spraying in the treatment tank (100) according to the pressure inside the treatment tank (100). The external discharge section (300) is connected to the other end of the check section (200), and uses wind power to generate negative pressure to extract the steam to the outside.

2. The converter slag hot quenching device according to claim 1, characterized in that, Also includes: An exhaust port (130) is located on the cover (110) and communicates with the exhaust section (300) to extract gas from the top of the treatment tank (100).

3. The converter slag hot quenching device according to claim 1, characterized in that, The check segment (200) includes: The outer casing (210) is a pipe with a cross-sectional shape of one of rectangle, circle, ellipse or triangle; The bracket (220) is a rigid frame that is fixed to the inner periphery of the outer shell (210) and protrudes inward; The cover plate (230) is a plate-like body that can be flipped to the steam exhaust side and can cover the support (220); When the pressure generated inside the treatment tank (100) due to steam evaporation is greater than the external atmospheric pressure, the steam overcomes the component of gravity of the cover plate (230) and achieves overturning.

4. The converter slag hot quenching device according to claim 3, characterized in that, The cover plate (230) is tilted toward the disposal tank (100) when it is stationary.

5. The converter slag hot quenching device according to claim 4, characterized in that, The cover plate (230) has an angle of 30 to 60 degrees in the horizontal direction.

6. The converter slag hot quenching device according to claim 3, characterized in that, The outer shell (210) has a rectangular cross-sectional shape.

7. The converter slag hot quenching device according to claim 1, characterized in that, A sealing part (400) is further provided between the treatment tank (100) and the cover (110), the sealing part (400) comprising: The water seal tank (410) is a tank body fixed around the opening of the treatment tank (100); The water seal plate (420) is a rigid protrusion fixed to the periphery of the cover (110); When the cover (110) is placed over the opening of the treatment tank (100), the water seal plate (420) extends into the water seal groove (410), and water is present in the water seal groove (410), forming a seal.

8. The converter slag hot quenching device according to claim 7, characterized in that, The depth of the water seal trough (410) is controlled by the pressure of the steam that opens the check section (200), and the water pressure of the communicating vessel structure formed by the water seal plate (420) and the water seal trough (410) is greater than the pressure of the steam that opens the check section (200).

9. The converter slag hot quenching device according to claim 1, characterized in that, The pressure of the wind in the exhaust section (300) is less than the pressure at which the steam opens the check section (200).

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