A device and method for high-temperature conversion of ferroalloy slag into building materials

Abstract

This invention proposes a device for high-temperature conversion of ferroalloy slag into building materials, comprising a base, on which a pretreatment component, a melting component, and a forming component are sequentially connected. A coolant storage tank is located on the base near the forming component. A stirring component for agitating the molten material is located on the melting component. A conveying mechanism for feeding material is located at the inlet end of the pretreatment component, and a supporting frame is located below the conveying mechanism. This invention, by sequentially connecting the pretreatment component, melting component, forming component, and coolant storage tank along the material flow direction and integrating them onto the same base, forms a continuous and compact production line from the input of ferroalloy slag raw material to the output of finished building materials.

Description

Technical Field

[0001] This invention relates to the field of building materials technology, and in particular to a device and method for high-temperature conversion of ferroalloy slag into building materials. Background Technology

[0002] Ferroalloy slag, a byproduct of industrial production, not only occupies large amounts of land when stockpiled but also potentially pollutes the surrounding environment. Developing ferroalloy slag into high-value-added building materials through high-temperature conversion technology is an important way to achieve its reduction, harmlessness, and resource utilization. However, ferroalloy slag has a complex composition, high hardness, and varying melting points, and existing processing technologies still have many shortcomings in terms of crushing efficiency, melting uniformity, equipment stability, and final product quality.

[0003] For example, in the prior art, patent document CN113151675B discloses a solid waste co-sintering and pelletizing process, which involves incinerating or pyrolyzing solid waste and then screening it, with solid waste slag of different particle sizes used in the sintering and pelletizing processes respectively. Although this scheme achieves partial resource utilization, its process is mainly designed for ordinary solid waste and is not optimized for special solid waste such as ferroalloy slag, which has high hardness and complex composition. This results in problems such as low crushing efficiency, high energy consumption, and poor adaptability to complex compositions. Another patent document, CN115305353B, discloses a resource-based treatment process for iron and zinc solid waste, which separates and recovers zinc and iron through processes such as classification, roasting, and reduction. This scheme has a complex process and insufficient utilization of other valuable elements (such as silicon and aluminum) in ferroalloy slag, limiting its direct application in the building materials field. Furthermore, the high-temperature process places high demands on equipment stability and maintenance cost control.

[0004] In summary, optimizing the crushing, melting, and forming processes for ferroalloy slag to improve resource utilization while reducing energy consumption and enhancing equipment operational stability is a pressing technical problem that needs to be solved in this field. Summary of the Invention

[0005] The present invention aims to at least partially solve one of the technical problems in the related art.

[0006] To achieve the above objectives, the present invention proposes a device for high-temperature conversion of ferroalloy slag into building materials, comprising a base, on which a pretreatment component, a melting component, and a forming component are sequentially connected and arranged; a coolant storage tank is arranged on the base near the forming component; and a stirring component for stirring the molten material is arranged on the melting component.

[0007] The pretreatment component has a feeding port with a conveying mechanism for feeding materials, and a support frame is provided below the conveying mechanism.

[0008] This invention connects the pretreatment component, melting component, forming component, and cooling storage tank sequentially along the material flow direction and integrates them on the same base, forming a continuous and compact production line from the input of ferroalloy slag raw materials to the output of finished building materials. The base serves as a unified installation reference for each functional component, effectively suppressing relative displacement and loose connections caused by asynchronous vibration phases of individual equipment, significantly improving the overall structural stability and operational reliability of the entire system under continuous, heavy-load conditions. The conveying mechanism, located at the feed inlet of the pretreatment component, enables mechanized and automatic material feeding, reducing manual intervention and improving operational efficiency.

[0009] Optionally, the pretreatment component includes a crushing cylinder, a first drive motor is fixedly installed at the upper end of the crushing cylinder, the power output end of the first drive motor extends into the interior of the crushing cylinder, and the power output end of the first drive motor is connected to a rotating shaft. Two symmetrical crushing blades are fixedly installed on both sides of the rotating shaft. The surface of the crushing blades is provided with a plurality of equally spaced through holes, and a protrusion structure is provided between every two adjacent through holes.

[0010] Furthermore, the melting assembly includes a heating furnace, a crucible is fixedly installed inside the heating furnace, a heating cavity is formed between the outer wall of the crucible and the inner wall of the heating furnace, a plurality of evenly distributed heating tubes are fixedly installed inside the heating cavity, and the stirring assembly is fixedly installed at the upper end of the heating furnace and outside the crucible.

[0011] Furthermore, the stirring assembly includes two symmetrical guide rails, and two symmetrical brackets are fixedly installed on the top of the heating furnace between the two guide rails. A screw rod runs through the interior of the two brackets, and a slider is sleeved on the outside of the screw rod. The slider is slidably connected to the corresponding guide rail. A lifting rod is fixedly installed at the bottom end of the slider, and a stirring head is fixedly installed at the telescopic end of the lifting rod.

[0012] Furthermore, the molding assembly includes a fixed platform, a mold box is fixedly installed inside the fixed platform, a pressing and molding shaft runs through the inside of the mold box, and one end of the pressing and molding shaft extends to the outside of the fixed platform and is sleeved with a driven gear. A second drive motor is fixedly installed at one end of the fixed platform, and a drive gear is sleeved at the power output end of the second drive motor. A chain is sleeved on the outside of both the driven gear and the drive gear.

[0013] Furthermore, the top and bottom of the coolant storage tank are fixedly equipped with sealing caps and discharge pipes, a control valve is sleeved on the outside of the discharge pipe, and a finished product collection box is placed directly below the discharge pipe.

[0014] Furthermore, a waste liquid collection tank is placed above the base and below the crushing cylinder. A hydraulic pump is installed on the side wall of the crushing cylinder. The inlet end of the hydraulic pump forms a fixed connection structure with the waste liquid collection tank through an inlet pipe. The outlet end of the hydraulic pump forms a fixed connection structure with the crushing cylinder through a first outlet pipe.

[0015] This invention also provides a method for high-temperature conversion of ferroalloy slag into building materials, comprising the following steps: S1. Ferroalloy slag is fed into the crushing cylinder of the pretreatment component via a conveying mechanism; S2. Start the hydraulic pump to send the liquid in the waste liquid collection tank into the crushing cylinder, and at the same time start the first drive motor to drive the rotating shaft with crushing blades to perform wet crushing of the ferroalloy slag; after crushing is completed, discharge the waste liquid. S3. Feed the crushed ferroalloy slag into the crucible of the melting component and start the heating tube to melt it; S4. During the melting process, the material in the crucible is stirred by the stirring component; S5. The molten material is fed into the mold box of the molding component, the second drive motor is started, and the pressing and molding shaft is driven by the transmission chain to press and shape the material. S6. The formed material is sent into the finished product collection box, the control valve of the coolant storage tank is opened, the material is cooled by the coolant, and the finished building material is obtained after drying.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the overall structure of a device for high-temperature conversion of ferroalloy slag into building materials according to the present invention, which aims to show the layout relationship of the base, support frame, conveying mechanism, pretreatment component, melting component, forming component and cooling storage tank; Figure 2 This is a schematic diagram of the pretreatment components of a device for high-temperature conversion of ferroalloy slag into building materials according to the present invention, which aims to show the details of the crushing cylinder, the first drive motor, the rotating shaft, the crushing blades and their surface through holes and protrusions. Figure 3 This is a cross-sectional view of the melting components of a device for high-temperature conversion of ferroalloy slag into building materials according to the present invention. It is intended to show the structural arrangement of the heating furnace, crucible, heating chamber, heating tube and stirring assembly, including the connection method of the guide rail, screw, slider, lifting rod and stirring head. Figure 4 This is a schematic diagram of the molding component of a device for high-temperature conversion of ferroalloy slag into building materials according to the present invention, which aims to show the transmission structure of the fixed platform, mold box, pressing and molding shaft, second drive motor, drive gear, driven gear and chain; Figure 5 This is a schematic diagram of the cooling storage tank of a device for high-temperature conversion of ferroalloy slag into building materials according to the present invention, which aims to show the arrangement of the sealing cover, discharge pipe, control valve and finished product collection box; Figure 6 This is a schematic diagram of the process steps for high-temperature conversion of ferroalloy slag into building materials according to the present invention, which briefly describes the process steps from pouring the ferroalloy slag to the final cooled finished product.

[0018] Explanation of reference numerals in the attached figures: 1. Base; 2. Support frame; 3. Conveying mechanism; 4. Pretreatment component; 5. Melting component; 6. Forming component; 7. Cooling storage tank; 8. Hydraulic pump; 9. Crushing cylinder; 10. First drive motor; 11. Rotating shaft; 12. Crushing blade; 13. Through hole; 14. Protruding structure; 15. Heating furnace; 16. Crucible; 17. Heating chamber; 18. Heating tube; 19. Guide rail; 20. Screw; 21. Slider; 22. Lifting rod; 23. Stirring head; 24. Fixed platform; 25. Mold box; 26. Pressing and forming shaft; 27. Second drive motor; 28. Drive gear; 29. ​​Driven gear; 30. Chain; 31. Sealing cover; 32. Discharge pipe; 33. Control valve; 34. Finished product collection box; 35. Waste liquid collection tank. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] This invention proposes a device for high-temperature conversion of ferroalloy slag into building materials, as described below. Figures 1 to 5 Please provide a detailed explanation.

[0021] A device for high-temperature conversion of ferroalloy slag into building materials includes a base 1, on which a pretreatment component 4, a melting component 5, and a forming component 6 are sequentially connected. A coolant storage tank is provided on the base 1 at the forming component 6. A stirring component for stirring the molten material is provided on the melting component 5. The pretreatment component 4 is equipped with a conveying mechanism 3 for feeding materials at the inlet end, and a support frame 2 is provided below the conveying mechanism 3.

[0022] This invention connects the pretreatment component 4, melting component 5, forming component 6, and cooling storage tank sequentially along the material processing flow direction and integrates them on the same base 1, forming a continuous and compact production line from the input of ferroalloy slag raw materials to the output of finished building materials. With base 1 as the unified installation reference, the relative displacement and loose connections caused by asynchronous vibration phases of individual equipment are effectively suppressed, significantly improving the overall structural stability and operational reliability of the entire system under continuous, heavy-load conditions. The conveying mechanism 3 is located at the feed inlet of the pretreatment component 4, realizing mechanized automatic material feeding, reducing manual intervention, and improving operational efficiency.

[0023] In some embodiments, the pretreatment component 4 includes a crushing cylinder 9, which is used for wet crushing process, and a first feed inlet is provided on one side of the crushing cylinder 9. The first feed inlet is directly opposite to the conveying mechanism 3 so that the conveying mechanism 3 can directly transport the material into the first feed inlet. A first drive motor 10 is fixedly installed at the upper end of the crushing cylinder 9. The power output end of the first drive motor 10 extends into the interior of the crushing cylinder 9, and the power output end of the first drive motor 10 is connected to a rotating shaft 11. The rotating shaft 11 is connected to both ends of the crushing cylinder 9 through bearings to ensure the stability of the rotating shaft 11 during high-speed rotation. Two symmetrical crushing blades 12 are fixedly installed on both sides of the rotating shaft 11. The surface of the crushing blades 12 has several equally spaced through holes 13, and a protruding structure 14 is provided between every two adjacent through holes 13.

[0024] It should be noted that the introduction of wet crushing technology allows the crushing process of ferroalloy slag to take place in a liquid medium. While subjected to the mechanical impact and shearing force generated by the high-speed rotation of the crushing blades 12, the ferroalloy slag is also subjected to the continuous scouring and entrainment effects of the liquid. The equally spaced through holes 13 on the crushing blades 12 allow the liquid and finely crushed particles to dynamically flow through the crushing chamber, effectively disrupting the buffer layer effect formed at the bottom of the crushing chamber by high-hardness, large particles. This allows the mechanical energy of the crushing blades 12 to act more directly and concentratedly on the large, uncrushed ferroalloy slag particles, significantly improving crushing efficiency and energy utilization. The protruding structures 14 between adjacent through holes 13 generate a strong "rubbing" and "grinding" effect with the ferroalloy slag particles when the crushing blades 12 rotate at high speed. This effect acts like a miniature peeler, selectively peeling away impurities, oxide layers, and reaction product surfaces firmly attached to the surface of the ferroalloy slag particles. The peeled impurities disperse in the liquid and are discharged with the waste liquid, while the clean ferroalloy slag particles are retained. This design improves the purity of the crushed materials from the source, laying a key foundation for obtaining high-quality molten slurry with uniform composition and low impurity content in the subsequent melting process.

[0025] In some embodiments, the melting assembly 5 includes a heating furnace 15, a crucible 16 is fixedly installed inside the heating furnace 15, a heating chamber 17 is formed between the outer wall of the crucible 16 and the inner wall of the heating furnace 15, a plurality of uniformly distributed heating tubes 18 are fixedly installed inside the heating chamber 17, and a stirring assembly is fixedly installed at the upper end of the heating furnace 15 and outside the crucible 16.

[0026] Understandably, by forming an annular heating cavity 17 between the outer wall of the crucible 16 and the inner wall of the furnace 15, and uniformly distributing several heating tubes 18 within the heating cavity 17, a temperature field is constructed to uniformly radiate heat the crucible 16 in a 360-degree circumferential direction. This heating structure effectively avoids radial temperature gradients generated inside the material of the crucible 16 when heated to a single point or side, ensuring that the ferroalloy slag in each region of the crucible 16 can be heated to the melting temperature synchronously and uniformly. For complex materials like ferroalloy slag, which are composed of multiple mineral phases with different melting points, a uniform heating temperature field can prevent local overheating that leads to excessive burning or volatilization of low-melting-point components, while also preventing high-melting-point components from failing to fully melt due to insufficient temperature. This ensures that all components enter a fluidized molten state within the same time window, providing the necessary thermophysical conditions for subsequent stirring to achieve uniform mixing of all components.

[0027] In some embodiments, the stirring assembly includes two symmetrical guide rails 19, and two symmetrical brackets are fixedly installed on the top of the heating furnace 15 between the two guide rails 19. A screw 20 runs through the interior of the two brackets, and a slider 21 is sleeved on the outside of the screw 20. The slider 21 is slidably connected to the corresponding guide rail 19. A lifting rod 22 is fixedly installed at the bottom end of the slider 21, and a stirring head 23 is fixedly installed at the telescopic end of the lifting rod 22.

[0028] Understandably, the stirring head 23 is driven by the screw 20, and the slider 21 moves up and down along the guide rail 19 under the drive of the screw 20. Ultimately, the lifting rod 22 drives the stirring head 23 to move up and down within the crucible 16, allowing the stirring head 23 to perform vertical stirring operations within the crucible 16. This vertical movement directly addresses the critical issue of compositional and temperature differences between the upper and lower layers during the melting process of ferroalloy slag. Due to the significant density differences among the various mineral phases in the ferroalloy slag, under the influence of gravity, the denser, higher-melting-point components (such as iron- and chromium-containing metallic phases) tend to settle and accumulate at the bottom of the crucible 16, while the less dense, lower-melting-point components (such as silicate glass phases) float to the surface of the melt, naturally forming a compositional gradient and temperature stratification along the Z-axis. The reciprocating vertical movement of the stirring head 23 acts like a reciprocating forced convection piston. During the upward stroke, the stirring head 23 forcibly carries and lifts the high-density, high-metal-content melt from the bottom of the crucible 16, transporting it to the upper layer of the molten pool. During the downward stroke, the stirring head 23 pushes the low-density, high-silicate-content melt from the upper layer downward, driving it to flow towards the bottom of the crucible 16. This periodic forced vertical convection along the Z-axis directly breaks the static stratification of the melt caused by gravity, establishing a dynamic mass exchange cycle that runs through the entire depth of the molten pool, allowing the components within the crucible 16 to be fully mixed in the vertical direction.

[0029] In some embodiments, the molding assembly 6 includes a fixed platform 24, a mold box 25 is fixedly installed inside the fixed platform 24, a pressing and forming shaft 26 passes through the inside of the mold box 25, and one end of the pressing and forming shaft 26 extends to the outside of the fixed platform 24 and is sleeved with a driven gear 29. A second drive motor 27 is fixedly installed at one end of the fixed platform 24, and a drive gear 28 is sleeved at the power output end of the second drive motor 27. A chain 30 is sleeved on the outside of the driven gear 29 and the drive gear 28.

[0030] Specifically, a transmission mechanism consisting of a drive gear 28, a driven gear 29, and a chain 30 is used to smoothly and reliably transmit the rotational power of the second drive motor 27 to the pressing shaft 26. Compared to hydraulic direct-pressure molding, mechanical transmission pressing can more precisely control the pressing speed and stroke of the pressing shaft 26, achieving a gradual increase in molding pressure. This controllable pressurization process helps to orderly discharge residual air bubbles trapped inside the high-temperature molten slurry through the venting gap of the mold box 25, avoiding the formation of stress concentration sources inside the finished product due to porosity defects. The chain 30 transmission has the characteristics of strong synchronization and accurate transmission ratio, ensuring the consistency and repeatability of each pressing action, thereby enabling the mass production of building components with uniform dimensions and dense internal structures, significantly improving the compressive strength, flexural strength, and appearance quality of the finished product.

[0031] In some embodiments, a sealing cap 31 and a discharge pipe 32 are fixedly installed on the top and bottom of the coolant storage tank. A control valve 33 is sleeved on the outside of the discharge pipe 32, and a finished product collection box 34 is placed directly below the discharge pipe 32.

[0032] Understandably, the sealing cap 31 ensures the cleanliness and sealing of the cooling medium in the coolant storage tank, preventing external contaminants from falling in. The discharge pipe 32, in conjunction with the control valve 33, allows for precise measurement and control of the coolant flow rate and outflow velocity. Operators can flexibly adjust the opening of the control valve 33 based on the rate at which the formed material enters the finished product collection box 34 and the real-time temperature of the material, allowing the coolant to be injected into the finished product collection box 34 at a suitable rate, thus implementing controlled-rate cooling of the high-temperature formed blank. This controlled cooling method effectively avoids excessive temperature gradients and thermal stress between the material surface and core caused by rapid cooling, preventing the formation of cooling cracks and allowing the internal crystal structure or glassy structure of the material to fully solidify along a path conducive to strength development. This plays a decisive role in ensuring the long-term durability, freeze-thaw resistance, and volume stability of the finished building materials.

[0033] In some embodiments, a waste liquid collection tank 35 is placed above the base 1 and below the crushing cylinder 9. The crushing cylinder 9 is provided with a waste discharge port for discharging waste liquid. A regulating valve for adjusting the discharge volume is provided at the waste discharge port. A hydraulic pump 8 is provided on the side wall of the crushing cylinder 9. The inlet end of the hydraulic pump 8 forms a fixed connection structure with the waste liquid collection tank 35 through an inlet pipe. The outlet end of the hydraulic pump 8 forms a fixed connection structure with the crushing cylinder 9 through a first outlet pipe.

[0034] Specifically, the waste liquid collection tank 35 is located directly below the crushing cylinder 9, enabling gravity-fed collection of waste liquid and shortening the discharge path. The inlet of the hydraulic pump 8 is connected to the waste liquid collection tank 35, and the outlet is connected to the crushing cylinder 9, forming a circulation or unidirectional supply path for the liquid medium. During the wet crushing process, the supernatant in the waste liquid collection tank 35 can be pumped back to the crushing cylinder 9 by the hydraulic pump 8 according to process requirements, realizing the recycling of the liquid medium and effectively reducing water consumption and the total amount of waste liquid discharged. Alternatively, the hydraulic pump 8 can also be used to replenish fresh liquid medium into the crushing cylinder 9 to maintain the optimal liquid-solid ratio in the crushing chamber and ensure the continuous and efficient operation of the wet crushing process. The flange fixed connection structure between the pipelines ensures the sealing and pressure resistance of the liquid transportation, preventing leakage.

[0035] This invention also provides a method for high-temperature conversion of ferroalloy slag into building materials, as described below. Figure 6 Please provide a detailed explanation.

[0036] A method for high-temperature conversion of ferroalloy slag into building materials includes the following steps: S1. Ferroalloy slag is fed into the crushing cylinder 9 of the pretreatment component 4 through the conveying mechanism 3; S2. Start the hydraulic pump 8 to send the liquid in the waste liquid collection tank 35 into the crushing cylinder 9, and at the same time start the first drive motor 10 to drive the rotating shaft 11 with crushing blades 12 to perform wet crushing of the ferroalloy slag; after crushing is completed, discharge the waste liquid. S3. The crushed ferroalloy slag is fed into the crucible 16 of the melting component 5, and the heating tube 18 is started to melt it. S4. During the melting process, the material in the crucible 16 is stirred by the stirring assembly; S5. The molten material is fed into the mold box 25 of the molding component 6, and the second drive motor 27 is started to drive the pressing and molding shaft 26 through the transmission chain to press and shape the material. S6. The formed material is sent into the finished product collection box 34, and the control valve 33 of the coolant storage tank is opened. The material is cooled by the coolant and dried to obtain the finished building material.

[0037] Understandably, this method forms a complete resource utilization process for ferroalloy slag by sequentially connecting wet crushing, uniform melting, multi-dimensional stirring, controlled pressing, and controlled cooling steps. Step S2, wet crushing, achieves simultaneous efficient crushing and surface impurity removal, providing clean raw materials for subsequent processes. In steps S3 and S4, the synergistic effect of uniform radiant heating and multi-dimensional composite stirring ensures uniform melting of all components in complex materials, eliminating component segregation. Step S5 employs mechanical transmission pressing, resulting in high forming precision and good product density. Step S6, by controlling the cooling rate through valve 33, effectively avoids thermal stress cracking, ensuring product quality. This overall method solves the problems of high energy consumption, low resource utilization rate, and unstable product performance in existing ferroalloy slag treatment technologies, achieving efficient and environmentally friendly transformation of ferroalloy slag into high-quality building materials.

[0038] In the description of this invention, 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," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0039] 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 invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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, an electrical connection, or a connection that allows communication between them; 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for high-temperature conversion of ferroalloy slag into building materials, characterized in that, The device includes a base, on which a pretreatment component, a melting component, and a forming component are sequentially connected. A coolant storage tank is located on the base near the forming component. A stirring component for stirring molten materials is provided on the melting component. The pretreatment component has a feeding port with a conveying mechanism for feeding materials, and a support frame is provided below the conveying mechanism.

2. The apparatus for high-temperature conversion of ferroalloy slag into building materials according to claim 1, characterized in that, The pretreatment component includes a crushing cylinder, on the upper end of which a first drive motor is fixedly installed. The power output end of the first drive motor extends into the interior of the crushing cylinder, and the power output end of the first drive motor is connected to a rotating shaft. Two symmetrical crushing blades are fixedly installed on both sides of the rotating shaft. The surface of the crushing blades is provided with a number of equally spaced through holes, and a protruding structure is provided between every two adjacent through holes.

3. The apparatus for high-temperature conversion of ferroalloy slag into building materials according to claim 1, characterized in that, The melting assembly includes a heating furnace, inside which a crucible is fixedly installed. A heating chamber is formed between the outer wall of the crucible and the inner wall of the heating furnace. Several evenly distributed heating tubes are fixedly installed inside the heating chamber. The stirring assembly is fixedly installed at the upper end of the heating furnace and outside the crucible.

4. The apparatus for high-temperature conversion of ferroalloy slag into building materials according to claim 3, characterized in that, The stirring assembly includes two symmetrical guide rails. Two symmetrical brackets are fixedly installed on the top of the heating furnace between the two guide rails. A screw rod runs through the interior of both brackets. A slider is sleeved on the outside of the screw rod and is slidably connected to the corresponding guide rail. A lifting rod is fixedly installed at the bottom end of the slider, and a stirring head is fixedly installed at the telescopic end of the lifting rod.

5. The apparatus for high-temperature conversion of ferroalloy slag into building materials according to claim 1, characterized in that, The molding assembly includes a fixed platform, a mold box is fixedly installed inside the fixed platform, a pressing and molding shaft runs through the inside of the mold box, and one end of the pressing and molding shaft extends to the outside of the fixed platform and is sleeved with a driven gear. A second drive motor is fixedly installed at one end of the fixed platform, and a drive gear is sleeved at the power output end of the second drive motor. A chain is sleeved on the outside of both the driven gear and the drive gear.

6. The apparatus for high-temperature conversion of ferroalloy slag into building materials according to claim 1, characterized in that, The top and bottom of the coolant storage tank are fixedly equipped with sealing caps and discharge pipes. A control valve is sleeved on the outside of the discharge pipe, and a finished product collection box is placed directly below the discharge pipe.

7. The apparatus for high-temperature conversion of ferroalloy slag into building materials according to claim 2, characterized in that, A waste liquid collection tank is placed above the base and below the crushing cylinder. A hydraulic pump is installed on the side wall of the crushing cylinder. The inlet end of the hydraulic pump is connected to the waste liquid collection tank through an inlet pipe, and the outlet end of the hydraulic pump is connected to the crushing cylinder through a first outlet pipe.

8. A method for high-temperature conversion of ferroalloy slag into building materials, characterized in that, Includes the following steps: S1. Ferroalloy slag is fed into the crushing cylinder of the pretreatment component via a conveying mechanism; S2. Start the hydraulic pump to send the liquid in the waste liquid collection tank into the crushing cylinder, and at the same time start the first drive motor to drive the rotating shaft with crushing blades to perform wet crushing of the ferroalloy slag; after crushing is completed, discharge the waste liquid. S3. Feed the crushed ferroalloy slag into the crucible of the melting component and start the heating tube to melt it; S4. During the melting process, the material in the crucible is stirred by the stirring component; S5. The molten material is fed into the mold box of the molding component, the second drive motor is started, and the pressing and molding shaft is driven by the transmission chain to press and shape the material. S6. The formed material is sent into the finished product collection box, the control valve of the coolant storage tank is opened, the material is cooled by the coolant, and the finished building material is obtained after drying.

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