LF Refining Furnace Smelting Control Equipment and Control Method for Refining Slag Basicity and Inclusions

Abstract

The present invention discloses a device for controlling the basicity of refining slag and inclusions in an LF refining furnace, which includes a support frame, a mixing container, a double-stage rotary driving mixing component, a material rotary stirring mechanism, a material lifting and mixing mechanism, and a discharging and spraying device. The support frame includes a U-shaped support plate and two groups of connecting columns installed on the inner wall of the U-shaped support plate. One group of connecting columns is externally connected to a servo motor, and the servo motor is installed on the U-shaped support plate and its power output end is connected to the connecting column. The inner ends of the two groups of connecting columns are connected to the mixing container. The double-stage rotary driving mixing component is installed on the top of the mixing container, and the lower ends of the double-stage rotary driving mixing component are respectively connected to the material rotary stirring mechanism and the material lifting and mixing mechanism. The present invention can greatly improve the uniformity of material mixing, and pour the mixed material into the ladle. During the pouring process, the material is evenly sprayed into the ladle through the discharging and spraying device, so as to achieve the purpose of controlling the basicity of the refining slag and inclusions.

Description

Technical Field

[0001] The present invention relates to the technical field of LF refining furnaces, and particularly to an equipment and a control method for controlling the basicity and inclusions of refining slag in LF refining furnace smelting. Background Technique

[0002] The LF refining furnace is a steel smelting equipment mainly used for secondary smelting. The main functions of the LF refining furnace are to degas, desulfurize, adjust alloy components, etc. for the molten steel through heating and atmosphere adjustment to improve the quality of the steel.

[0003] However, the existing LF refining furnaces have the following problems in the slag-making process: During the production process, due to medium-high carbon steel and low-silicon low-AL in the slag-making process, calcium carbide deoxidation is often used, resulting in too high basicity and slag viscosity, and the inclusions in the molten steel cannot be effectively adsorbed, leading to a chaotic production rhythm, affecting production efficiency and production output. Therefore, an equipment for controlling the basicity and inclusions of refining slag in LF refining furnace smelting and a corresponding control method are needed to reduce the basicity of the refining slag, adjust the viscosity of the refining slag, increase the adsorption capacity of the refining slag, and reduce the situations such as chaotic production rhythm and unstable quality of steel billets, providing strong technical support for production and accelerating the production rhythm. Summary of the Invention

[0004] The purpose of the present invention is to provide an equipment and a control method for controlling the basicity and inclusions of refining slag in LF refining furnace smelting, and solve the technical problem that during the production process, due to medium-high carbon steel and low-silicon low-AL in the slag-making process, calcium carbide deoxidation is often used, resulting in too high basicity and slag viscosity, and the inclusions in the molten steel cannot be effectively adsorbed, leading to a chaotic production rhythm, affecting production efficiency and production output.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An equipment for controlling the basicity and inclusions of refining slag in LF refining furnace smelting includes a support frame, a mixing container, a double-stage rotary driving mixing component, a material rotary stirring mechanism, a material lifting and mixing mechanism, and a discharging and sprinkling device. The support frame includes a U-shaped support plate and two groups of connecting columns installed on the inner wall of the U-shaped support plate. One group of the connecting columns is connected to a servo motor at the outer end, and the servo motor is installed on the U-shaped support plate and the power output end is connected to the connecting column. The inner ends of the two groups of connecting columns are connected to the mixing container. The double-stage rotary driving mixing component is installed on the top of the mixing container, and the lower ends of the double-stage rotary driving mixing component are respectively connected to the material rotary stirring mechanism and the material lifting and mixing mechanism. The material rotary stirring mechanism is rotatably arranged on the inner wall of the mixing container. The material lifting and mixing mechanism is vertically installed below the double-stage rotary driving mixing component. The discharging and sprinkling device is installed at the upper end of the mixing container;

[0006] The double-stage rotary drive mixing assembly includes a mounting plate, a drive motor, a drive gear, a transmission gear, and a driven gear. The outer end of the mounting plate is connected to the inner wall of the mixing container. The drive motor is installed outside the mixing container, and its power output end is connected to the drive gear. The drive gear meshes with the transmission gear, and the transmission gear meshes with the driven gear, and both are installed on the mounting plate;

[0007] The material rotary stirring mechanism includes a rotating ring, a vertical plate, and mixing blades. The rotating ring is rotatably arranged at the upper end of the mixing container, and teeth are formed on its surface. The teeth mesh with the transmission gear. The vertical plates are provided in several groups and are vertically installed below the rotating ring. The mixing blades are installed on the vertical plates;

[0008] The material lifting and mixing mechanism includes an aggregate bottom cover, a rotating shaft, spiral blades, a floating cover, a connecting rod, and a floating rod. The aggregate bottom cover is fixed to the bottom of the mixing container. The lower end of the rotating shaft is located inside the aggregate bottom cover, and the upper end is connected to the driven gear. The spiral blades are provided in several groups and are evenly installed on the rotating shaft. The floating cover is sleeved on the upper end of the rotating shaft, and its edge is connected to the mounting plate through two connecting rods. The floating rod is vertically installed on the floating cover, and the upper end of the floating rod is used in cooperation with the driven gear;

[0009] The discharging and sprinkling device includes a mounting disc installed at the edge of the mixing container and a sprinkling disc rotatably arranged inside the mounting disc. The outer end of the mounting disc is connected with a transmission motor, and the power output end of the transmission motor is connected to the sprinkling disc. A feeding port is formed in the middle of the sprinkling disc, and an inner cavity is formed inside. The depth of the middle part of the inner cavity is less than that of the edge. A number of sprinkling ports are evenly formed in the edge of the sprinkling disc, and the sprinkling ports are communicated with the inner cavity.

[0010] As a preferred mode of the present invention, the bottom of the mixing container is in a conical structure, and a dome is arranged inside. The dome is connected to the inner wall of the mixing container through a metal rod, and a gap groove is formed between the two. The aggregate bottom cover is located below the dome.

[0011] As a preferred mode of the present invention, the mixing blades are composed of two symmetrically arranged partitions on the left and right. A number of slot holes are formed on the surface of the partitions. A number of guide pipes are obliquely arranged between the two partitions. The two ends of the guide pipes are respectively connected to the slot holes on the two partitions, and the two connected slot holes are arranged in a staggered manner.

[0012] As a preferred mode of the present invention, the inner side of the partition is in an arc structure and fits the radian of the dome.

[0013] As a preferred mode of the present invention, the floating cover is in a cover shape, and the diameter of the upper end is smaller than that of the lower end. The floating cover is located directly below the driven gear.

[0014] As a preferred embodiment of the present invention, the connecting rod is of a two-piece structure and includes a sleeve located above and a pull rod movably inserted into the sleeve, and a spring is connected between the pull rod and the sleeve.

[0015] As a preferred embodiment of the present invention, a chassis is fixed to the bottom of the driven gear, and a plurality of groups of floating blocks are formed on the edge of the chassis. One end of the floating block is thinner than the other end and the overall structure is a slope structure. The upper end of the floating rod is spherical and is used in cooperation with the floating block.

[0016] As a preferred embodiment of the present invention, the specific control method is as follows:

[0017] The staff selects silicon carbide and aluminum particles. The silicon carbide has a content of 95% and a particle size of 2 mm - 6 mm, and the aluminum particles have an aluminum content of 99% and a particle size of 12 mm. 10 kg of each is taken, and then the silicon carbide and aluminum particles are introduced into the mixing container. The drive motor is turned on to drive the gear, and the drive motor drives the transmission gear to rotate. During the rotation of the transmission gear, the rotating ring and the driven gear are driven to rotate synchronously. During the rotation of the rotating ring, the vertical plate and the mixing blades below are driven to rotate. During the rotation of the mixing blades, the silicon carbide and aluminum particles are stirred in a rotary manner. During the rotation process, the materials enter the slot holes and are guided through the guide pipe. Due to the inclined design of the guide pipe, the materials at different depths can be guided up and down to achieve the purpose of mixing. The materials deposited at the bottom of the mixing container enter the aggregate bottom cover, and the spiral blades are driven to rotate by the rotating shaft to guide the materials upward to reach the floating cover. The materials fall onto the floating cover, and the rotation of the driven gear drives the chassis and the floating blocks to rotate. The floating blocks act on the floating rod to move up and down, achieving the purpose of floating the floating cover up and down, increasing the throwing range during the material feeding process, and achieving a better mixing purpose for the materials deposited at the bottom. After mixing, the mixing container is flipped to introduce the materials into the discharging spreader, and the driving motor drives the spreading disk to rotate. Under the action of centrifugal force, the materials are evenly spread into the ladle for deoxidation and desulfurization treatment, achieving the purpose of reducing the basicity and viscosity of the refining slag and increasing the ability of the refining furnace slag to adsorb inclusions.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. In the present invention, for deoxidation and desulfurization in an LF refining furnace, silicon carbide and aluminum pellets are stirred and mixed evenly and then added into the ladle of the refining furnace for deoxidation and desulfurization, reducing the basicity of the refining slag and increasing the ability of the refining slag to adsorb inclusions. The equipment is used to stir silicon carbide and aluminum pellets. After being stirred evenly, they are added into the ladle, achieving the purpose of reducing the basicity and viscosity of the refining slag, increasing the ability of the refining slag in the refining furnace to adsorb inclusions. It not only meets the smelting requirements of the original LF refining furnace, but also achieves the purpose of controlling the basicity of the refining slag and inclusions, effectively improving the finished product qualification rate and production stability.

[0020] 2. The present invention designs a device for mixing the raw materials for controlling the basicity of the refining slag and inclusions in the LF refining furnace smelting. The device includes a support frame, a mixing container, a double-stage rotary drive mixing component, a material rotary stirring mechanism, a material lifting and mixing mechanism, and a discharging and sprinkling device. When it is necessary to mix and stir silicon carbide and aluminum pellets, the staff can introduce silicon carbide and aluminum pellets into the mixing container. The double-stage rotary drive mixing component drives the material rotary stirring mechanism and the material lifting and mixing mechanism to rotate synchronously. During the rotation process, the materials can be subjected to rotary mixing treatment respectively, and the materials deposited at the bottom of the mixing container can be lifted and sprinkled, which can greatly improve the mixing uniformity of the materials. Then, the mixed materials are poured into the ladle, and during the pouring process, the discharging and sprinkling device evenly sprinkles the materials into the ladle, achieving the purpose of controlling the basicity of the refining slag and inclusions. Description of the Drawings

[0021] Figure 1 is the overall structure diagram of the present invention;

[0022] Figure 2 is the bottom structure diagram of the mounting plate described in the present invention;

[0023] Figure 3 is the connection structure diagram of the vertical plate and the mixing blades described in the present invention;

[0024] Figure 4 is the cross-sectional view of the mixing blades described in the present invention;

[0025] Figure 5 is the structure diagram of the material lifting and mixing mechanism described in the present invention;

[0026] Figure 6 is the structure diagram of the floating cover described in the present invention;

[0027] Figure 7 is the structure diagram of the discharging and sprinkling device described in the present invention.

[0028] In the figure: 1, mixing container; 2, U-shaped pallet; 3, connecting column; 4, servo motor; 5, mounting plate; 6, driving motor; 7, driving gear; 8, transmission gear; 9, driven gear; 10, rotating ring; 11, vertical plate; 12, mixing blade; 13, locking tooth; 14, aggregate bottom cover; 15, rotating shaft; 16, spiral blade; 17, floating cover; 18, connecting rod; 19, floating rod; 20, mounting disc; 21, spreading disc; 22, driving motor; 23, feeding port; 24, inner cavity; 25, spreading port; 26, dome; 27, partition board; 28, slot hole; 29, guide pipe; 30, sleeve; 31, pull rod; 32, spring; 33, chassis; 34, floating block. Detailed implementation mode

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figure 1-7 , the present invention provides a technical solution: a device for controlling the basicity of refining slag and inclusions in an LF refining furnace, including a support frame, a mixing container 1, a double-stage rotary drive mixing assembly, a material rotary stirring mechanism, a material lifting and mixing mechanism, and a discharging spreader. The support frame includes a U-shaped pallet 2 and two groups of connecting columns 3 installed on the inner wall of the U-shaped pallet 2. One end of one group of connecting columns 3 is connected to a servo motor 4. The servo motor 4 is installed on the U-shaped pallet 2 and the power output end is connected to the connecting column 3. The inner ends of the two groups of connecting columns 3 are connected to the mixing container 1. The double-stage rotary drive mixing assembly is installed on the top of the mixing container 1. The lower ends of the double-stage rotary drive mixing assembly are respectively connected to the material rotary stirring mechanism and the material lifting and mixing mechanism. The material rotary stirring mechanism is rotatably arranged on the inner wall of the mixing container 1. The material lifting and mixing mechanism is vertically installed below the double-stage rotary drive mixing assembly. The discharging spreader is installed at the upper end of the mixing container 1;

[0031] The double-stage rotary drive mixing assembly includes a mounting plate 5, a driving motor 6, a driving gear 7, a transmission gear 8, and a driven gear 9. The outer end of the mounting plate 5 is connected to the inner wall of the mixing container 1. The driving motor 6 is installed outside the mixing container 1 and the power output end is connected to the driving gear 7. The driving gear 7 meshes with the transmission gear 8. The transmission gear 8 meshes with the driven gear 9 and both are installed on the mounting plate 5;

[0032] The material rotating and stirring mechanism includes a rotating ring 10, a vertical plate 11, and mixing blades 12. The rotating ring 10 is rotatably arranged at the upper end of the mixing container 1, and a toothed 13 is formed on its surface. The toothed 13 meshes with the transmission gear 8. Several groups of vertical plates 11 are vertically installed below the rotating ring 10, and the mixing blades 12 are installed on the vertical plates 11. The lower end of the transmission gear 8 extends to one side of the rotating ring 10 and can drive the rotating ring 10 to rotate;

[0033] The material lifting and mixing mechanism includes an aggregate bottom cover 14, a rotating shaft 15, a spiral blade 16, a floating cover 17, a connecting rod 18, and a floating rod 19. The aggregate bottom cover 14 is fixed to the bottom of the mixing container 1. The lower end of the rotating shaft 15 is located inside the aggregate bottom cover 14, and the upper end is connected to the driven gear 9. Several groups of spiral blades 16 are evenly installed on the rotating shaft 15. The floating cover 17 is sleeved on the upper end of the rotating shaft 15, and its edge is connected to the mounting plate 5 through two connecting rods 18. The floating rod 19 is vertically installed on the floating cover 17, and the upper end of the floating rod 19 is used in cooperation with the driven gear 9. The material deposited at the bottom of the mixing container 1 enters the aggregate bottom cover 14. The rotating shaft 15 drives the spiral blade 16 to rotate, guiding the material upward to reach the floating cover 17, and the material drops onto the floating cover 17;

[0034] The discharging and sprinkling device includes a mounting plate 20 installed on the edge of the mixing container 1 and a sprinkling plate 21 rotatably arranged inside the mounting plate 20. The outer end of the mounting plate 20 is connected to a driving motor 22, and the power output end of the driving motor 22 is connected to the sprinkling plate 21. A feeding port 23 is formed in the middle of the sprinkling plate 21, and an inner cavity 24 is formed inside. The depth in the middle of the inner cavity 24 is less than the depth of the edge. Several groups of sprinkling ports 25 are evenly formed on the edge of the sprinkling plate 21, and the sprinkling ports 25 are communicated with the inner cavity 24. The driving motor 22 drives the sprinkling plate 21 to rotate, and the material is evenly sprinkled into the ladle under the action of centrifugal force.

[0035] Further improved, as Figure 1 shown: The bottom of the mixing container 1 is in a conical structure and is provided with a dome 26 inside. The dome 26 is connected to the inner wall of the mixing container 1 through a metal rod, and a clearance groove is formed between them. The aggregate bottom cover 14 is located below the dome 26, and the material deposited at the bottom can be concentrated.

[0036] Further improved, as Figure 3 and 4As shown in the figure: The mixing blade 12 is composed of two groups of partitions 27 that are symmetrical left and right. A number of groups of slot holes 28 are provided on the surface of the partition 27. A number of groups of guide pipes 29 are arranged obliquely between the two groups of partitions 27. The two ends of the guide pipe 29 are respectively connected to the slot holes 28 on the two groups of partitions 27, and the two connected slot holes 28 are arranged in a staggered manner. Due to the inclined design of the guide pipe 29, the inclination angle of the guide pipe 29 should not be too large, and it is controlled within 10 degrees - 30 degrees to avoid the situation that the materials below cannot flow upward due to the large inclination angle, and the materials at different depths can be guided up and down to achieve the purpose of mixing.

[0037] Further improved, as Figure 3 shown in the figure: The inner side of the partition 27 is in an arc structure and fits the curvature of the dome 26, and the mixing process can be carried out along the surface of the dome 26.

[0038] Further improved, as Figure 6 shown in the figure: The floating cover 17 is in a cover structure and the diameter of the upper end is smaller than that of the lower end. The floating cover 17 is located directly below the driven gear 9. Such a design is convenient for guiding the materials outward.

[0039] Further improved, as Figure 6 shown in the figure: The connecting rod 18 is of a two-section structure and includes a sleeve 30 located above and a pull rod 31 movably inserted into the sleeve 30. A spring 32 is connected between the pull rod 31 and the sleeve 30, and it can perform adaptive expansion and contraction in cooperation with the up and down movement of the floating cover 17.

[0040] Specifically, a chassis 33 is fixed at the bottom of the driven gear 9. A number of groups of floating blocks 34 are formed by machining at the edge of the chassis 33. One end of the floating block 34 is thinner than the other end and the overall structure is a slope structure. The upper end of the floating rod 19 is in a spherical structure and is used in cooperation with the floating block 34. Such a design can drive the floating rod 19 to move up and down through the floating block 34 during the rotation of the chassis 33, so as to achieve the purpose of floating adjustment of the floating cover 17.

[0041] During use: The specific control method of the present invention is as follows:

[0042] The staff selects silicon carbide and aluminum particles. The silicon carbide has a content of 95% and a particle size of 2 mm - 6 mm, and the aluminum particles have an aluminum content of 99% and a particle size of 12 mm. 10 kilograms of each are taken, and then the silicon carbide and aluminum particles are introduced into the mixing container 1. The driving motor 6 is turned on to drive the gear 7, and the driving motor 6 drives the transmission gear 8 to rotate. During the rotation of the transmission gear 8, the rotating ring 10 and the driven gear 9 are driven to rotate synchronously. During the rotation of the rotating ring 10, the vertical plate 11 and the mixing blades 12 below are driven to rotate. During the rotation of the mixing blades 12, the silicon carbide and aluminum particles are stirred in a rotary manner. During the rotation process, the materials enter into the slot holes 28 and are guided through the guiding pipe 29. Due to the inclined design of the guiding pipe 29, the materials at different depths can be guided up and down to achieve the purpose of mixing. The materials deposited at the bottom of the mixing container 1 enter into the aggregate bottom cover 14, and the spiral blade 16 is driven to rotate by the rotating shaft 15 to guide the materials upward to reach the floating cover 17. The materials fall onto the floating cover 17. The rotation of the driven gear 9 drives the chassis 33 and the floating block 34 to rotate. The floating block 34 acts on the floating rod 19 to move up and down, achieving the purpose of floating the floating cover 17 up and down, improving the throwing range of the materials during the feeding process, and achieving a better mixing purpose for the materials deposited at the bottom. After mixing is completed, the mixing container 1 is flipped to introduce the materials into the discharging and throwing device. The driving motor 22 drives the throwing disc 21 to rotate, and under the action of centrifugal force, the materials are evenly thrown into the ladle for deoxidation and desulfurization treatment, achieving the purpose of reducing the alkalinity and viscosity of the refining slag, and increasing the ability of the refining furnace slag to adsorb inclusions. It uses calcium carbide for deoxidation with an alkalinity of 11 - 14, and uses a mixture of silicon carbide and aluminum particles with an alkalinity of 1.5 - 3.0.

[0043] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0044] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth" may explicitly or implicitly include at least one of such features.

[0045] In the present invention, unless otherwise clearly specified or limited, the terms "installation", "setting", "connection", "fixation", "swivel connection" and the like shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. LF refining furnace smelting control equipment for refining slag basicity and inclusions, characterized in that: It includes a support frame, a mixing container (1), a double-stage rotary drive mixing assembly, a material rotary stirring mechanism, a material lifting and mixing mechanism, and a discharging and spraying device. The support frame includes a U-shaped support plate (2) and two groups of connecting columns (3) installed on the inner wall of the U-shaped support plate (2). One group of the connecting columns (3) is externally connected to a servo motor (4). The servo motor (4) is installed on the U-shaped support plate (2) and its power output end is connected to the connecting column (3). The inner ends of the two groups of connecting columns (3) are connected to the mixing container (1). The double-stage rotary drive mixing assembly is installed on the top of the mixing container (1). The material rotary stirring mechanism is rotatably arranged on the inner wall of the mixing container (1). The material lifting and mixing mechanism is vertically installed below the double-stage rotary drive mixing assembly. The discharging and spraying device is installed at the upper end of the mixing container (1). The double-stage rotary drive mixing assembly includes a mounting plate (5), a drive motor (6), a drive gear (7), a transmission gear (8), and a driven gear (9). The outer end of the mounting plate (5) is connected to the inner wall of the mixing container (1). The drive motor (6) is installed outside the mixing container (1) and its power output end is connected to the drive gear (7). The drive gear (7) meshes with the transmission gear (8). The transmission gear (8) meshes with the driven gear (9), and both are installed on the mounting plate (5). The material rotary stirring mechanism includes a rotating ring (10), a vertical plate (11), and mixing blades (12). The rotating ring (10) is rotatably arranged at the upper end of the mixing container (1) and has teeth (13) formed on its surface. The teeth (13) mesh with the transmission gear (8). The vertical plates (11) are provided in several groups and are vertically installed below the rotating ring (10). The mixing blades (12) are installed on the vertical plates (11). The material lifting and mixing mechanism includes an aggregate bottom cover (14), a rotating shaft (15), spiral blades (16), a floating cover (17), a connecting rod (18), and a floating rod (19). The aggregate bottom cover (14) is fixed to the bottom of the mixing container (1). The lower end of the rotating shaft (15) is located inside the aggregate bottom cover (14) and the upper end is connected to the driven gear (9). The spiral blades (16) are provided in several groups and are evenly installed on the rotating shaft (15). The floating cover (17) is sleeved on the upper end of the rotating shaft (15) and its edge is connected to the mounting plate (5) through two groups of connecting rods (18). The floating rod (19) is vertically installed on the floating cover (17), and the upper end of the floating rod (19) is used in cooperation with the driven gear (9). The discharging and spraying device includes a mounting plate (20) installed at the edge of the mixing container (1) and a spraying plate (21) rotatably arranged in the mounting plate (20). The outer end of the mounting plate (20) is connected with a driving motor (22), and the power output end of the driving motor (22) is connected with the spraying plate (21). A feeding port (23) is formed in the middle of the spraying plate (21), and an inner cavity (24) is formed inside. The depth of the middle part of the inner cavity (24) is less than that of the edge. A plurality of groups of spraying ports (25) are evenly formed in the edge of the spraying plate (21), and the spraying ports (25) are communicated with the inner cavity (24). The bottom of the mixing container (1) is of a conical structure, and a dome (26) is arranged inside. The dome (26) is connected with the inner wall of the mixing container (1) through a metal rod, and a clearance groove is formed between them. The aggregate bottom cover (14) is located below the dome (26). The mixing blades (12) are composed of two groups of symmetrically arranged partitions (27) on the left and right. A plurality of groups of slot holes (28) are formed on the surface of the partitions (27). A plurality of groups of guide pipes (29) are obliquely arranged between the two groups of partitions (27). The two ends of the guide pipes (29) are respectively connected with the slot holes (28) on the two groups of partitions (27), and the two connected slot holes (28) are arranged in a staggered manner.

2. The equipment for controlling the basicity of refining slag and inclusions in LF refining furnace smelting according to claim 1, characterized in that: The inner side of the partition (27) is of an arc structure and is fitted with the radian of the dome (26).

3. The equipment for controlling the basicity of refining slag and inclusions in LF refining furnace according to claim 1, characterized in that: The floating cover (17) is of a cover structure, and the diameter of the upper end is smaller than that of the lower end. The floating cover (17) is located directly below the driven gear (9).

4. The equipment for controlling the basicity of refining slag and inclusions in LF refining furnace smelting according to claim 1, characterized in that: The connecting rod (18) is of a two-section structure and includes a sleeve (30) located above and a pull rod (31) movably inserted into the sleeve (30). A spring (32) is connected between the pull rod (31) and the sleeve (30).

5. The equipment for controlling the basicity of refining slag and inclusions in LF refining furnace smelting according to claim 1, characterized in that: A chassis (33) is fixed at the bottom of the driven gear (9). A plurality of groups of floating blocks (34) are formed on the edge of the chassis (33). One end of the floating block (34) is thinner than the other end, and the whole is of a slope structure. The upper end of the floating rod (19) is of a spherical structure and is used in cooperation with the floating block (34).

6. The control method of the equipment for controlling the basicity of refining slag and inclusions in LF refining furnace smelting according to claim 5, characterized in that: The specific control method is as follows: The staff selects silicon carbide and aluminum particles. The silicon carbide has a content of 95% and a particle size of 2 mm - 6 mm, and the aluminum particles have an aluminum content of 99% and a particle size of 12 mm. 10 kilograms of each are taken, and then the silicon carbide and aluminum particles are introduced into the mixing container (1). The drive motor (6) is turned on to drive the gear (7), and the drive motor (6) drives the transmission gear (8) to rotate. During the rotation of the transmission gear (8), the rotating ring (10) and the driven gear (9) are driven to rotate synchronously. During the rotation of the rotating ring (10), the vertical plate (11) and the mixing blades (12) below are driven to rotate. During the rotation of the mixing blades (12), the silicon carbide and aluminum particles are stirred in a rotary manner. During the rotation process, the materials enter the slot holes (28) and are guided through the guide pipe (29). Due to the inclined design of the guide pipe (29), the materials at different depths can be guided up and down to achieve the purpose of mixing. The materials deposited at the bottom of the mixing container (1) enter the aggregate bottom cover (14), and the spiral blade (16) is driven to rotate by the rotating shaft (15) to guide the materials upward to reach the floating cover (17). The materials fall onto the floating cover (17). The rotation of the driven gear (9) drives the chassis (33) and the floating block (34) to rotate, and the floating block (34) acts on the floating rod (19) to move up and down to achieve the purpose of floating the floating cover (17) up and down, increasing the throwing range during the material feeding process, and achieving a better mixing purpose for the materials deposited at the bottom. After mixing, the mixing container (1) is flipped to introduce the materials into the discharging and throwing device. The transmission motor (22) drives the throwing disc (21) to rotate, and the materials are evenly thrown into the ladle under the action of centrifugal force for deoxidation and desulfurization treatment, achieving the purpose of reducing the alkalinity and viscosity of the refining slag and increasing the ability of the refining furnace slag to adsorb inclusions.

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