Split type slag ladle and steel slag treatment equipment

Abstract

The utility model relates to a split type slag ladle and steel slag treatment equipment. The split type slag pot comprises a slag pot body. The slag pot body comprises a first pot body and a second pot body. The first tank body is provided with a first cavity used for containing steel slag, and the first cavity is provided with an opening and a bottom plate which are oppositely arranged. The second tank body is provided with a second cavity. The second tank body further comprises a cover plate, and the cover plate covers the opening of the second cavity. The bottom plate abuts against the cover plate. And molten steel outflow holes are formed in the bottom plate and the cover plate, communicate with the first cavity and the second cavity and are used for enabling molten steel to flow into the second cavity from the first cavity. The split type slag ladle can be used for cyclic utilization treatment of the steel slag, the treated steel slag can be subjected to rapid slag-steel separation, and slag-steel separation which is low in difficulty and easy to operate is achieved.

Description

Technical Field

[0001] This application relates to the field of steel slag recycling technology, and in particular to a split-type slag tank and steel slag processing equipment. Background Technology

[0002] Converter slag contains P2O5, which is harmful to the properties of steel, making direct recycling difficult. Some of the CaO and MgO in steel slag are combined with other components, while some exist in a free state, causing them to expand in volume when exposed to air. Therefore, steel slag must be processed before use in building materials, and its usage is limited. Existing technologies for steel slag recycling, considering its characteristics, mainly include hot quenching, hot pouring, and drum recycling. After crushing and magnetic separation, the iron-rich portion of the steel slag is returned to steelmaking, the tailings are re-sintered, and the remainder is used in cement, roadbeds, or landfill.

[0003] Traditional methods for recycling steel slag require steps such as crushing, screening, and magnetic separation to separate the slag and steel, which is difficult and complex. Utility Model Content

[0004] Therefore, it is necessary to provide a split-type slag tank and steel slag processing equipment. The split-type slag tank of this application can be used for the recycling of steel slag and can quickly separate slag and steel after processing, achieving slag and steel separation with low difficulty and simple operation.

[0005] In a first aspect, this application provides a split-type slag pot, including a slag pot body; the slag pot body includes a first pot body and a second pot body; the first pot body has a first cavity for receiving steel slag, the first cavity having an opening and a bottom plate disposed opposite to each other; the second pot body has a second cavity; the second pot body further includes a cover plate, the cover plate covering the opening of the second cavity; the bottom plate and the cover plate abut against each other; the bottom plate and the cover plate are provided with molten steel outflow holes, the molten steel outflow holes communicating with the first cavity and the second cavity, the molten steel outflow holes being used to allow molten steel to flow from the first cavity into the second cavity.

[0006] In some embodiments, the split-type slag tank further includes a limiting device connected to the bottom plate and the cover plate; the limiting device is used to limit the relative position between the first tank and the second tank.

[0007] In some embodiments, the base plate protrudes from the outer wall of the first tank, the cover plate protrudes from the outer wall of the second tank, and the limiting device is connected to the portion of the base plate protruding from the outer wall of the first tank and the portion of the cover plate protruding from the outer wall of the second tank.

[0008] In some embodiments, the slag tank body further includes an abutment portion; the abutment portion is connected to the end of the cover plate and protrudes from the cover plate in a direction away from the first tank body.

[0009] In some embodiments, the split slag pot further includes a thrust device, a receiving device, and a blocking device;

[0010] The thrust device can abut against the abutment part to make the second tank body move in the plane of the contact surface between the bottom plate and the cover plate;

[0011] The receiving device has a receiving surface for receiving the second tank, the receiving surface being located in the plane of the contact surface between the cover plate and the bottom plate; the receiving device moves synchronously with the second tank along the moving direction of the second tank;

[0012] The blocking device is used to prevent the movement of the first tank.

[0013] In some embodiments, the split slag tank further includes a lifting ring disposed on the outer wall of the second tank body.

[0014] Secondly, this application provides a steel slag processing device, including the split slag tank described in any of the above claims;

[0015] The steel slag treatment equipment also includes a machine base, a powder spraying tank, a connecting pipe, a rotary spray gun, and a rotary control device.

[0016] The powder spraying can is mounted on the machine base, and the powder spraying can is used to spray reducing agent powder.

[0017] The rotary spray gun is mounted on the machine base; the rotary spray gun is rotatable around its axis; the discharge end of the rotary spray gun is located in the first cavity; the discharge end of the powder spraying tank is connected to the feed end of the rotary spray gun through the connecting pipe, for spraying the reducing agent powder into the cavity; the rotation control device is mounted on the machine base and connected to the rotary spray gun to control the rotation of the rotary spray gun.

[0018] In some embodiments, the rotary spray gun includes a powder spraying pipe, a support pipe, and a heat insulation pipe nested from the inside out; the discharge end of the powder spraying tank is connected to the feed end of the powder spraying pipe through the connecting pipe; the rotation control device is connected to the support pipe; the rotary spray gun also includes a blade, which is disposed on the periphery of the heat insulation pipe and close to the bottom of the first cavity.

[0019] In some embodiments, the steel slag treatment equipment further includes a lifting control device, which is mounted on the machine platform; the lifting control device is connected to the rotary spray gun and is used to control the setting height of the rotary spray gun within the first cavity.

[0020] In some embodiments, the steel slag processing equipment further includes a dust removal device disposed on the machine platform; the dust removal device is disposed facing the opening of the first cavity.

[0021] The aforementioned split-type slag pot can be used for the recycling of steel slag. In use, the hot steel slag to be treated is added to the first chamber. The hot steel slag undergoes a reduction treatment, causing it to generate molten steel through a reduction reaction. The molten steel flows through the molten steel outlet into the second chamber, while the unreacted steel slag remains in the first chamber. By separating the first and second chambers, rapid slag-steel separation can be achieved, resulting in a relatively easy and simple slag-steel separation process. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of a split-type slag tank provided in one embodiment of this application;

[0023] Figure 2 A schematic diagram of a split-type slag tank provided for yet another embodiment of this application;

[0024] Figure 3 A schematic diagram of the structure of a steel slag treatment device provided in another embodiment of this application;

[0025] Figure 4 This is a partial structural diagram of a rotary spray gun provided in one embodiment of this application.

[0026] Explanation of reference numerals in the attached figures

[0027] 1. Base plate; 2. Cover plate; 3. Abutment part; 4. First tank; 5. Limiting device; 6. Second tank; 7. Steel slag; 8. Molten steel; 9. Lifting ring; 10. Thrust device; 11. Receiving device; 12. Blocking device; 13. Powder spraying tank; 14. Connecting pipe; 15. Rotary joint; 16. Coupling; 17. Rotary spray gun; 18. Blade; 19. Powder spraying pipe; 20. Support pipe; 21. Heat insulation pipe; 22. Rotation control device; 23. Lifting control device; 24. Fixed pulley; 25. Traction component; 26. Dust removal device; 27. Machine base. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, a detailed description of specific embodiments of this application is provided below. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] Reference Figure 1As shown, one embodiment of this application provides a split-type slag pot, including a slag pot body. The slag pot body includes a first pot 4 and a second pot 6. The first pot 4 has a first cavity for receiving steel slag, and the first cavity has an opening and a bottom plate 1 disposed opposite to each other. The second pot 6 has a second cavity. The second pot 6 also includes a cover plate 2, which covers the opening of the second cavity. The bottom plate 1 and the cover plate 2 abut against each other. The bottom plate 1 and the cover plate 2 are provided with molten steel outflow holes, which connect the first cavity and the second cavity, and are used to allow molten steel to flow from the first cavity into the second cavity.

[0034] The aforementioned split-type slag pot can be used for the recycling of steel slag. In use, the hot steel slag to be treated is added to the first chamber. The hot steel slag undergoes a reduction treatment, causing it to generate molten steel through a reduction reaction. The molten steel flows through the molten steel outlet into the second chamber, while the unreacted steel slag remains in the first chamber. By separating the first chamber 4 and the second chamber 6, rapid slag-steel separation can be achieved, resulting in a relatively easy and simple slag-steel separation process.

[0035] Understandably, the diameter of the molten steel outlet hole should be controlled so that the molten steel can pass through but the slag cannot.

[0036] In some embodiments, the split-type slag tank also includes a limiting device 5, which connects the bottom plate 1 and the cover plate 2. The limiting device 5 is used to limit the relative position between the first tank body 4 and the second tank body 6.

[0037] During the processing of steel slag, the first tank 4 and the second tank 6 can be fixed by the limiting device 5. After the processing is completed, the limiting device 5 can be released from the first tank 4 and the second tank 6 to facilitate the separation of the first tank 4 and the second tank 6.

[0038] In some embodiments, the bottom plate 1 protrudes from the outer wall of the first tank 4, the cover plate 2 protrudes from the outer wall of the second tank 6, and the limiting device 5 is connected to the portion of the bottom plate 1 that protrudes from the outer wall of the first tank 4 and the portion of the cover plate 2 that protrudes from the outer wall of the second tank 6.

[0039] The limiting device 5 is connected to the portion of the base plate 1 that protrudes from the outer wall of the first tank 4 and the portion of the cover plate 2 that protrudes from the outer wall of the second tank 6, facilitating the release of the limiting device 5 from restricting the first tank 4 and the second tank 6. For example, the limiting device 5 can fix the first tank 4 and the second tank 6 through openings in the base plate 1 and the cover plate 2 and by using bolts.

[0040] In some embodiments, the slag tank body further includes an abutment portion 3. The abutment portion 3 is connected to the end of the cover plate 2 and protrudes from the cover plate 2 in a direction away from the first tank body 4.

[0041] The contact part 3 can cooperate with the device that applies external force to facilitate the separation of the first tank 4 and the second tank 6.

[0042] Reference Figure 2 As shown, in some embodiments, the split-type slag tank further includes a thrust device 10, a receiving device 11, and a blocking device 12. The thrust device 10 is capable of abutting against the abutment portion 3 to allow the second tank body 6 to move within the plane of the contact surfaces of the bottom plate 1 and the cover plate 2. The receiving device 11 has a receiving surface for receiving the second tank body 6, which is located within the plane of the contact surfaces of the cover plate 2 and the bottom plate 1. The receiving device 11 moves synchronously with the second tank body 6 along the direction of movement of the second tank body 6. The blocking device 12 is used to block the movement of the first tank body 4.

[0043] The first tank 4 and the second tank 6 can be easily separated and reset through the cooperation of the thrust device 10, the receiving device 11 and the blocking device 12.

[0044] In some embodiments, the split slag tank also includes a lifting ring 9, which is disposed on the outer wall of the second tank body 6.

[0045] After the split slag tank is flipped over, the second tank 6 can be lifted by a lifting machine connected to the lifting ring 9 set on the outer wall of the second tank 6, thus separating the first tank 4 and the second tank 6.

[0046] Reference Figure 3 As shown, another embodiment of this application provides a steel slag treatment device, including the split-type slag tank of any of the above-mentioned embodiments. The steel slag treatment device further includes a machine base 27, a powder spraying tank 13, a connecting pipe 14, a rotary spray gun 17, and a rotation control device 22. The powder spraying tank 13 is disposed on the machine base 27 and is used to spray reducing agent powder. The rotary spray gun 17 is disposed on the machine base 27. The rotary spray gun 17 is rotatable about its axis. The discharge end of the rotary spray gun 17 is disposed in the first cavity. The discharge end of the powder spraying tank 13 is connected to the feed end of the rotary spray gun 17 through the connecting pipe 14, and is used to spray reducing agent powder into the cavity. The rotation control device 22 is disposed on the machine base 27 and is connected to the rotary spray gun 17 to control the rotation of the rotary spray gun 17.

[0047] The aforementioned steel slag treatment equipment can be used for the recycling of steel slag. During operation, the hot steel slag to be treated is added to the first chamber, ensuring the slag submerges the discharge end of the rotary spray gun 17. A rotation control device 22 is connected to the rotary spray gun 17 to control its rotation around its axis. After the steel slag is added, reducing agent powder is sprayed through the rotary spray gun 17, exiting through the discharge end into the steel slag. Simultaneously, the rotation of the rotary spray gun 17 mixes the reducing agent powder and the steel slag, causing a reduction reaction that generates molten steel. Under the combined action of spraying and stirring, the molten steel in the steel slag and the reacted molten steel converge. Due to the gravity difference between the molten steel and the steel slag, the molten steel flows through the molten steel outlet into the second chamber, achieving a good separation effect between the molten steel and the steel slag. Simultaneously, during the reduction reaction, the generated CO gas continues to mix with the steel slag as it rises, further reacting with the upper layer of steel slag and increasing the effective utilization rate. The steel slag treatment equipment of this application effectively utilizes the physical heat of hot steel slag, achieving good mixing and reduction effects through injection and rotary stirring. This allows for the large-scale reduction of FeO in the steel slag and the reduction of P2O5 into the molten steel, resulting in good purification of the steel slag. The steel slag treatment equipment of this application can be used for the recycling of steel slag, improving the recovery rate of molten steel from the slag and the overall recycling rate of the steel slag. Furthermore, the separate slag pot enables relatively simple and easy-to-operate slag-steel separation.

[0048] It is understandable that hot steel slag refers to steel slag with a certain temperature.

[0049] Reference Figure 4 As shown, in some embodiments, the rotary spray gun 17 includes a powder spraying pipe 19, a support pipe 20, and a heat insulation pipe 21, which are nested from the inside out. The discharge end of the powder spraying tank 13 is connected to the feed end of the powder spraying pipe 19 via a connecting pipe 14. A rotation control device 22 is connected to the support pipe 20. The rotary spray gun 17 also includes a blade 18, which is disposed on the periphery of the heat insulation pipe 21 and near the bottom of the first cavity.

[0050] In the rotary spray gun 17, the outermost heat insulation pipe 21 is used to provide heat insulation protection for the inner powder spraying pipe 19 and support pipe 20. The support pipe 20 is connected to the rotation control device 22 to control the rotation of the rotary spray gun 17 around its axis. In use, the hot steel slag to be treated can be added into the first chamber, and the steel slag can be submerged in the blades 18. At the same time, the rotation of the rotary spray gun 17 causes the blades 18 to stir the steel slag, which can improve the mixing effect between the reducing agent powder and the steel slag.

[0051] In some embodiments, the steel slag treatment equipment further includes a lifting control device 23, which is mounted on the machine base 27. The lifting control device 23 is connected to the rotary spray gun 17 and is used to control the installation height of the rotary spray gun 17 within the first chamber.

[0052] The lifting control device 23 can control the setting height of the rotary spray gun 17 in the first cavity, so that the initial position of the rotary spray gun 17 is close to the bottom wall of the first cavity, so that the reducing agent powder and steel slag have a better mixing effect.

[0053] In some embodiments, the steel slag treatment equipment further includes a fixed pulley 24 and a traction component 25. The fixed pulley 24 is mounted on the machine base 27, and one end of the traction component 25 is connected to the lifting control device 23, while the other end passes through the fixed pulley 24 and is connected to the rotary spray gun 17. The traction component 25 is used to pull the rotary spray gun 17 to adjust its installation height within the cavity.

[0054] In some embodiments, the steel slag treatment equipment further includes a rotary joint 15 and a coupling 16. One end of the coupling 16 is connected to the rotary joint 15, and the other end is connected to the rotary spray gun 17. The discharge end of the connecting pipe 14 is connected to the rotary joint 15.

[0055] In some embodiments, the steel slag processing equipment further includes a dust removal device 26, which is mounted on the machine base 27. The dust removal device 26 is positioned facing the opening of the first chamber.

[0056] Because the reducing agent powder is sprayed into the first chamber through the powder spraying pipe 19, a relatively large amount of dust is generated. The dust generated can be collected by the dust collection device 26, which is installed facing the opening of the first chamber.

[0057] In some embodiments, the length of the blade 18 along the axial direction of the rotating spray gun 17 is 200mm to 800mm.

[0058] Optionally, the length of the blade 18 along the axial direction of the rotary spray gun 17 is 200mm, 250mm, 300mm, 350mm, 400mm, 450mm, 500mm, 550mm, 600mm, 650mm, 700mm, 750mm or 800mm, or the length of the blade 18 along the axial direction of the rotary spray gun 17 can be within any two of the above lengths.

[0059] In some embodiments, the length of the blade 18 along the radial direction of the rotating spray gun 17 is 200mm to 800mm.

[0060] Optionally, the radial length of the blade 18 along the rotating spray gun 17 is 200mm, 250mm, 300mm, 350mm, 400mm, 450mm, 500mm, 550mm, 600mm, 650mm, 700mm, 750mm, or 800mm, or the radial length of the blade 18 along the rotating spray gun 17 may be within any two of the above lengths.

[0061] Another embodiment of this application provides a steel slag treatment method, which uses the steel slag treatment equipment described above to treat steel slag, and includes the following steps:

[0062] The hot steel slag to be processed is added into the first chamber of the first tank 4 and the steel slag is submerged at the discharge end of the rotary spray gun 17.

[0063] The reducing agent powder is sprayed from the discharge end of the rotary spray gun 17 through the powder spraying tank 13. Simultaneously, the rotary spray gun 17 is rotated by the rotation control device 22. The rotation of the rotary spray gun 17 mixes the reducing agent powder with the hot steel slag, thus reducing the hot steel slag. The resulting molten steel flows into the second chamber through the molten steel outlet hole.

[0064] After the molten steel is cooled, the first tank 4 and the second tank 6 are separated.

[0065] Hot steel slag to be treated is added to the first chamber, ensuring the slag submerges the discharge end of the rotary spray gun 17. After adding the slag, reducing agent powder is sprayed through the rotary spray gun 17, exiting into the slag. Simultaneously, the rotation of the spray gun 17 mixes the reducing agent powder and slag, causing a reduction reaction that generates molten steel. Under the combined action of spraying and stirring, the molten steel in the slag and the reacted molten steel converge. Due to the gravitational difference between the molten steel and the slag, the molten steel flows through the molten steel outlet into the second chamber, achieving a better separation between the molten steel and the slag. Furthermore, during the reduction reaction, the CO gas generated continues to mix with the slag as it rises, further reacting with the upper layer of slag and increasing utilization efficiency. The steel slag treatment method of this application effectively utilizes the physical heat of hot steel slag, achieving good mixing and reduction effects through injection and rotary stirring. This allows for the substantial reduction of FeO in the steel slag and the reduction of P2O5 into the molten steel, resulting in a good purification effect on the steel slag. This method also improves the recovery rate of molten steel from the steel slag and the recycling rate of the steel slag. Furthermore, this method enables slag-steel separation with relatively low difficulty and simple operation.

[0066] In some embodiments, separating the first tank 4 and the second tank 6 includes the following steps:

[0067] The split-type slag tank is flipped so that the second tank 6 is above the first tank 4;

[0068] The blocking device 12 and the first tank 4 come into contact, the limiting device 5 restricts the relative position of the first tank 4 and the second tank 6, the thrust device 10 and the contact part 3 come into contact, and the second tank 6 is moved in the plane of the contact surface between the bottom plate 1 and the cover plate 2 by the thrust device 10.

[0069] The receiving device 11 contacts the cover plate 2 to receive the second tank 6, so that the receiving device 11 moves synchronously with the second tank 6 along the moving direction of the second tank 6.

[0070] In some embodiments, the reducing agent powder includes at least one of pulverized coal, coke powder, carbon powder, and ferrosilicon powder.

[0071] For example, the reducing agent powder can react with FeO in steel slag as follows:

[0072] FeO + C = Fe + CO, or 2FeO + Si = 2Fe + SiO2.

[0073] In some embodiments, the initial distance between the discharge end of the rotary spray gun 17 and the bottom wall of the cavity is set to 300mm to 500mm.

[0074] Optionally, the initial distance between the discharge end of the rotary spray gun 17 and the bottom wall of the cavity can be set to 300mm, 320mm, 340mm, 360mm, 380mm, 400mm, 420mm, 440mm, 460mm, 480mm or 500mm, or the initial distance between the discharge end of the rotary spray gun 17 and the bottom wall of the cavity can be set within any two of the above distances.

[0075] In some embodiments, the rotational speed of the rotary spray gun 17 is 20 r / min to 150 r / min.

[0076] Within the aforementioned rotational speed range of the rotary spray gun 17, the mixing and reduction effect between the reducing agent powder and the steel slag is better. Optionally, the rotational speed of the rotary spray gun 17 is 20 r / min, 30 r / min, 50 r / min, 80 r / min, 100 r / min, 120 r / min, 140 r / min, or 150 r / min, or the rotational speed of the rotary spray gun 17 can also be within the range between any two of the above rotational speeds.

[0077] In some embodiments, the rate of introduction of the reducing agent powder is 20 kg / min to 50 kg / min.

[0078] Within the range of the aforementioned reducing agent powder introduction rate, a better mixed reduction between the reducing agent powder and steel slag can be achieved, thereby improving the recovery rate of molten steel from the steel slag and the recycling rate of the steel slag. Optionally, the reducing agent powder introduction rate can be 20 kg / min, 25 kg / min, 30 kg / min, 35 kg / min, 40 kg / min, 45 kg / min, or 50 kg / min, or the reducing agent powder introduction rate can be within any two of the above-mentioned introduction rates.

[0079] In some embodiments, the reducing agent powder is introduced into the cavity via a carrier gas at a flow rate of 20 Nm³. 3 / h~80Nm 3 / h.

[0080] Optionally, the carrier gas flow rate is 20 Nm³. 3 / h, 25Nm 3 / h, 30Nm 3 / h, 35Nm 3 / h, 40Nm 3 / h, 45Nm 3 / h, 50Nm 3 / h、55Nm 3 / h、60Nm 3 / h、65Nm 3 / h, 70Nm 3 / h、75Nm 3 / h or 80Nm 3 / h, or the carrier gas flow rate can be within the range of any two of the above flow rates.

[0081] In some of these embodiments, the carrier gas includes nitrogen.

[0082] In some embodiments, the powder spraying pressure of the powder spraying tank 13 is 0.3MPa~0.5MPa.

[0083] By applying a certain pressure to spray the reducing agent powder into the cavity and mix it with the steel slag, a better mixing and reduction effect between the reducing agent powder and the steel slag can be achieved, which can improve the recovery rate of molten steel in the steel slag and the recycling rate of the steel slag. Optionally, the powder spraying pressure of the powder spraying tank 13 is 0.3MPa, 0.32MPa, 0.34MPa, 0.36MPa, 0.38MPa, 0.4MPa, 0.42MPa, 0.44MPa, 0.46MPa, 0.48MPa or 0.5MPa, or the powder spraying pressure of the powder spraying tank 13 can be within the range of any two of the above pressures.

[0084] The following are specific embodiments.

[0085] Example 1

[0086] Production conditions: The 210t converter has a first tank with an opening diameter of 4.2m and an internal height of 3.7m, and a second tank with an internal height of 0.5m, which contains about 45t~50t of hot steel slag. The split slag tanks are transported to the rotary injection treatment station and pulverized coal is injected for reduction.

[0087] Production parameters: coal powder feed rate 45 kg / t, rotary spray gun speed 80 r / min, and stand for 2 hours after treatment.

[0088] Production results: 7-8 tons of steel blocks were poured out of the second chamber. After testing, the FeO content in the steel slag decreased from 22% to 4%, and the P2O5 content decreased from 1.1% to 0.11%.

[0089] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0090] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims, and the specification and drawings can be used to interpret the content of the claims.

Claims

1. A split-type slag container, characterized in that, The system includes a slag pot body; the slag pot body includes a first pot body and a second pot body; the first pot body has a first cavity for receiving steel slag, the first cavity having an opening and a bottom plate disposed opposite to each other; the second pot body has a second cavity; the second pot body also includes a cover plate, the cover plate covering the opening of the second cavity; the bottom plate and the cover plate abut against each other; the bottom plate and the cover plate have steel molten material outflow holes, the steel molten material outflow holes connecting the first cavity and the second cavity, the steel molten material outflow holes being used to allow steel molten material to flow from the first cavity into the second cavity.

2. The split-type slag pot according to claim 1, characterized in that, The split-type slag tank also includes a limiting device, which is connected to the bottom plate and the cover plate; the limiting device is used to limit the relative position between the first tank and the second tank.

3. The split-type slag pot according to claim 2, characterized in that, The bottom plate protrudes from the outer wall of the first tank, the cover plate protrudes from the outer wall of the second tank, and the limiting device is connected to the portion of the bottom plate protruding from the outer wall of the first tank and the portion of the cover plate protruding from the outer wall of the second tank.

4. The split-type slag pot according to claim 3, characterized in that, The slag tank body also includes an abutment portion; the abutment portion is connected to the end of the cover plate, and the abutment portion protrudes from the cover plate in a direction away from the first tank body.

5. The split-type slag pot according to claim 4, characterized in that, The split-type slag pot also includes a thrust device, a receiving device, and a blocking device; The thrust device can abut against the abutment part to make the second tank body move in the plane of the contact surface between the bottom plate and the cover plate; The receiving device has a receiving surface for receiving the second tank, the receiving surface being located in the plane of the contact surface between the cover plate and the bottom plate; the receiving device moves synchronously with the second tank along the moving direction of the second tank; The blocking device is used to prevent the movement of the first tank.

6. The split-type slag pot according to any one of claims 1 to 5, characterized in that, The split-type slag tank also includes a lifting ring, which is disposed on the outer wall of the second tank body.

7. A steel slag treatment device, characterized in that, Includes the split-type slag pot as described in any one of claims 1 to 6; The steel slag treatment equipment also includes a machine base, a powder spraying tank, a connecting pipe, a rotary spray gun, and a rotary control device. The powder spraying can is mounted on the machine base, and the powder spraying can is used to spray reducing agent powder. The rotary spray gun is mounted on the machine base; the rotary spray gun is rotatable around its axis; the discharge end of the rotary spray gun is located in the first cavity; the discharge end of the powder spraying tank is connected to the feed end of the rotary spray gun through the connecting pipe, for spraying the reducing agent powder into the cavity; the rotation control device is mounted on the machine base and connected to the rotary spray gun to control the rotation of the rotary spray gun.

8. The steel slag treatment equipment according to claim 7, characterized in that, The rotary spray gun includes a powder spraying pipe, a support pipe, and a heat insulation pipe nested from the inside out; the discharge end of the powder spraying tank is connected to the feed end of the powder spraying pipe through the connecting pipe; the rotation control device is connected to the support pipe; the rotary spray gun also includes a blade, which is disposed on the periphery of the heat insulation pipe and close to the bottom of the first cavity.

9. The steel slag treatment equipment according to claim 7, characterized in that, The steel slag treatment equipment also includes a lifting control device, which is installed on the machine platform; the lifting control device is connected to the rotary spray gun, and is used to control the setting height of the rotary spray gun in the first cavity.

10. The steel slag treatment equipment according to claim 7, characterized in that, The steel slag processing equipment also includes a dust removal device, which is installed on the machine platform; the dust removal device is positioned facing the opening of the first cavity.

Images