Electromagnetic induction heating calcining equipment applied to production and processing of ultra-pure iron ore concentrate powder

Abstract

The invention relates to the technical field of ultra-pure iron concentrate powder calcination, in particular to electromagnetic induction heating calcination equipment applied to production and processing of ultra-pure iron concentrate powder, which comprises a horizontal mounting base and a driving motor. According to the electromagnetic induction heating calcining equipment applied to production and processing of the ultra-pure iron ore concentrate powder, the electromagnetic induction heating module is adopted, electric energy can be rapidly converted into heat energy, the heat energy is mainly transmitted in a self-induction heating mode in ore, iron ore can rapidly reach the needed high temperature, the heating speed is high, the production efficiency is greatly improved, and the production cost is reduced. The energy-saving effect is obvious; the heating temperature and power can be accurately controlled through electromagnetic heating, energy waste caused by inaccurate temperature control in a traditional mode is avoided, real-time adjustment can be conducted according to production requirements, and the energy utilization efficiency is further improved; the uniform magnetic field is generated by electromagnetic heating, so that the temperature of the whole mineral powder is uniformly increased, the stability and the consistency of the product quality are ensured, and a high-quality calcined product is favorably obtained.

Description

Technical Field

[0001] The invention relates to the technical field of calcining ultrapure iron ore concentrate powder, in particular to electromagnetic induction heating calcining equipment used for producing and processing ultrapure iron ore concentrate powder. Background Art

[0002] The traditional calcination method requires a lot of heat energy to reach the required high temperature, which will lead to high energy costs, and in the case of increasingly tight energy, it may be limited by energy supply and cost. At the same time, a large amount of waste gas, waste residue and other pollutants, such as sulfur-containing gas and particulate matter, will be generated during the calcination process. They need to be equipped with special processing equipment for purification. If they are not handled properly, they will cause pollution to the environment, such as air pollution and soil pollution, and will also face increasingly stringent environmental protection regulations. In addition, the current heating method is difficult to accurately control the parameters such as calcination temperature, time and atmosphere, which can easily lead to large fluctuations in the quality of ultra-pure iron concentrate powder, affecting its performance and subsequent application effects, such as its performance in powder metallurgy, magnetic materials and other fields. In addition, there are problems such as slow heating speed and long calcination cycle, resulting in low overall production efficiency and difficulty in meeting the needs of large-scale production. At the same time, the heating position of the existing calcination equipment is fixed, and it cannot be adaptively adjusted according to the position of the material, resulting in serious energy waste. Summary of the invention

[0003] The technical problem to be solved by the present invention is that traditional calcination consumes huge energy, is costly, generates a large amount of waste gas, and has low temperature control accuracy and low efficiency.

[0004] The technical solution adopted by the present invention to solve its technical problems is: an electromagnetic induction heating calcining equipment applied to the production and processing of ultra-pure iron ore concentrate powder, comprising a horizontal mounting base and a driving motor, a plurality of bottom support seats for mounting bottom support wheels are fixedly mounted on the upper surface of the horizontal mounting base, a horizontal heating guide pipe is movably supported on the upper end of the bottom support wheel, a plurality of electromagnetic induction heating modules are arranged on the outer side of the horizontal heating guide pipe through a lateral adjustment bracket, a gear transmission box for transmitting and connecting the driving motor and the horizontal heating guide pipe is fixedly assembled on the upper surface of the horizontal mounting base, and a lateral feed cover and a lateral discharge cover are respectively arranged on both sides of the horizontal heating guide pipe through lateral brackets.

[0005] An annular support frame matching with the bottom support wheel is fixedly mounted on the outer arc surface of the horizontally placed heating guide tube.

[0006] The gear transmission box includes a lateral cover fixed on the upper surface of the horizontal mounting base, a driven gear fixed on the outer arc surface of the horizontal heating guide tube, and a driving gear fixed on the driving shaft of the driving motor. The driven gear and the driving gear are meshed with each other and arranged inside the lateral cover.

[0007] The lateral adjustment bracket includes a plurality of strip-shaped mounting rails fixed on the outside of the horizontally placed heating guide tube, an internal adjustment screw installed inside the strip-shaped mounting rails, an internal threaded translation block threadedly sleeved on the internal adjustment screw, a strip-shaped external mounting seat fixed on the outside of the internal threaded translation block, and an annular synchronous adjustment mechanism fixed on one side of the strip-shaped mounting rails.

[0008] The upper surface of the horizontal mounting base is fixedly equipped with lateral translation guide rails on both sides of the horizontally placed heating material guiding pipe.

[0009] An electrically controlled translation type stacked cover is slidably mounted on the lateral translation guide rail at one side of the gear transmission box.

[0010] A plurality of bottom stabilizing frames are fixedly mounted on the upper surface of the horizontal mounting base below the electromagnetic induction heating module.

[0011] A side feeding pipe is fixedly mounted on the outer side surface of the side feed cover, an upper discharge pipe is fixedly mounted on the upper surface of the side discharge cover, and a lower discharge pipe is fixedly mounted on the lower surface of the side discharge cover.

[0012] An annular transmission guide groove is provided on the outer arc surface of the bottom support wheel.

[0013] A lateral conductive ring for supplying power to the electromagnetic induction heating module is installed on the upper surface of the horizontal mounting base, which is located outside the transverse heating guide tube.

[0014] The beneficial effects of the present invention are: (1) The electromagnetic induction heating calcining equipment for the production and processing of ultra-pure iron ore concentrate powder of the present invention uses an electromagnetic induction heating module to quickly convert electrical energy into thermal energy, and the thermal energy is mainly transmitted through the self-induction heating method inside the ore, so that the iron ore can quickly reach the required high temperature, the heating speed is fast, the production efficiency is greatly improved, and the energy saving effect is remarkable; (2) Electromagnetic heating can accurately control the heating temperature and power, avoiding the energy waste caused by inaccurate temperature control in traditional methods. It can be adjusted in real time according to production needs, further improving energy utilization efficiency; (3) Electromagnetic heating generates a uniform magnetic field, which makes the overall temperature of the mineral powder rise evenly, ensuring the stability and consistency of product quality and helping to obtain high-quality calcined products; (4) During the electromagnetic calcination process, no combustion waste gas, waste residue and other pollutants are generated, which has little pollution to the environment and meets environmental protection requirements; (5) The electromagnetic calcination system produces low noise during operation, which improves the working environment and reduces the impact on the health of operators; (6) Precise temperature control and uniform heating effect are conducive to a more complete and uniform physical and chemical reaction of the ultra-pure iron ore concentrate during the calcination process, so that the purity, activity and other indicators of the product are better guaranteed and improved, thereby improving its performance in subsequent applications; (7) The structure of the electromagnetic heating system is relatively simple, without complex mechanical transmission components and wearing parts, with high operating reliability and small maintenance workload, thus reducing equipment maintenance costs and downtime; (8) The electromagnetic calcination system is easy to realize automatic control and can be closely integrated with modern industrial automated production lines; (9) According to the characteristics of ultra-pure iron ore concentrate and different calcination process requirements, the parameters and position of electromagnetic heating can be flexibly adjusted to meet diverse production needs. For ore powders of different batches and different compositions, the best calcination effect can be achieved by optimizing the heating parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 It is a schematic diagram of the structure in the open state of the present invention.

[0018] Figure 3 It is a partial cross-sectional view of the assembly end of the lateral adjustment bracket in the present invention.

[0019] Figure 4 It is a partial schematic diagram of the position of the gear transmission box in the present invention. DETAILED DESCRIPTION

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Figure 1 , Figure 2 , Figure 3 and Figure 4 The electromagnetic induction heating calcining equipment shown in the figure is used for the production and processing of ultra-pure iron ore concentrate powder, including a horizontal mounting base 1 and a driving motor 2. Three bottom support seats 4 for mounting bottom support wheels 3 are fixedly mounted on the upper surface of the horizontal mounting base 1. A horizontal heating guide pipe 5 is movably supported on the upper end of the bottom support wheel 3. Four electromagnetic induction heating modules 7 are arranged on the outer side of the horizontal heating guide pipe 5 through a lateral adjustment bracket 6. A gear transmission box 8 for transmitting and connecting the driving motor 2 and the horizontal heating guide pipe 5 is fixedly assembled on the upper surface of the horizontal mounting base 1. Side feed covers 9 and side discharge covers 10 are respectively arranged on both sides of the horizontal heating guide pipe 5 through lateral brackets.

[0023] In order to cooperate with the lateral support, an annular support frame 11 that cooperates with the bottom support wheel 3 is fixedly mounted on the outer arc surface of the horizontal heating guide tube 5.

[0024] In order to cooperate with the drive adjustment, the gear transmission box 8 includes a lateral cover shell 81 fixed on the upper surface of the horizontal mounting base 1, a driven gear 82 fixed on the outer arc surface of the horizontal heating guide tube 5 and a driving gear 83 fixed on the driving shaft of the driving motor 2. The driven gear 82 and the driving gear 83 are meshed with each other and are arranged inside the lateral cover shell 81.

[0025] The driving motor 2 drives the driving gear 83 to rotate, thereby controlling the driven gear 82 to rotate, and the driven gear 82 drives the horizontally placed heating guide tube 5 to rotate synchronously.

[0026] In order to adjust the heating position and adaptively adjust according to the position of the raw materials inside the horizontal heating guide tube 5, the lateral adjustment bracket 6 includes a plurality of strip mounting rails 61 fixed to the outside of the horizontal heating guide tube 5, an internal adjustment screw 62 installed inside the strip mounting rail 61, an internal threaded translation block 63 threadedly sleeved on the internal adjustment screw 62, a strip external mounting seat 64 fixed to the outside of the internal threaded translation block 63 and an annular synchronous adjustment mechanism 65 fixed to one side of the strip mounting rail 61.

[0027] The annular synchronous adjustment mechanism 65 includes an annular transmission box fixed on one side of the strip mounting guide rail 61, a synchronous adjustment gear ring movably inserted inside the annular transmission box, and a synchronous motor fixed on one side of the annular transmission box for controlling the rotation of the synchronous adjustment gear ring. The outer end of the internal adjustment screw 62 is meshed with the synchronous adjustment gear ring for transmission, and the synchronous motor drives the synchronous adjustment gear ring to rotate, thereby controlling the synchronous rotation of the internal adjustment screw 62 in the strip mounting guide rail 61 of a circle at the connecting end, so as to control the translation of the electromagnetic induction heating module 7, and can follow the internal material position to translate a certain stroke, thereby reducing the heating gap between adjacent electromagnetic induction heating modules 7 and improving the heating accuracy.

[0028] In order to cooperate with lateral adjustment and guidance, lateral translation guide rails 12 are fixedly mounted on the upper surface of the horizontal mounting base 1 on both sides of the horizontal heating guide pipe 5 .

[0029] In order to improve the external protection of the equipment when not in use and the thermal insulation during operation, an electrically controlled translational stacking cover 13 is slidably mounted on the lateral translation guide rail 12 on one side of the gear transmission box 8 .

[0030] The electrically controlled translational stacked cover shell 13 includes 5 stacked cover shells, the innermost cover shell is movably assembled with the lateral translation guide rail 12 through the bottom driving wheel group, and one end of the outermost cover shell is fixed on the side wall of the gear transmission box 8, and then the innermost cover shell is translated to one side through the bottom driving wheel group, and then the outer cover shells are pulled one by one to extend outward layer by layer, so as to completely cover the outside of the horizontal heating guide tube 5, so as to avoid the heat dissipation during heating and reduce the waste of heat energy.

[0031] In order to improve the bottom support force and stability, 12 bottom stabilizing frames 14 are fixedly installed on the upper surface of the horizontal mounting base 1 below the electromagnetic induction heating module 7 .

[0032] The lower end of the lateral adjustment bracket 6 is fixedly assembled with the bottom stabilizing frame 14 and is used to be arranged outside the horizontal heating material guiding pipe 5 .

[0033] In order to coordinate feeding, discharging and exhausting, a side feeding pipe 15 is fixedly mounted on the outer side of the side feeding cover 9, an upper discharge pipe 16 is fixedly mounted on the upper surface of the side discharge cover 10, and a lower discharge pipe 17 is fixedly mounted on the lower surface of the side discharge cover 10.

[0034] In order to ensure the bottom support, guidance and limiting stability, an annular transmission guide groove 31 is opened on the outer arc surface of the bottom support wheel 3.

[0035] The lower end of the bottom support wheel 3 is inserted into the annular transmission guide groove 31 for rolling assembly.

[0036] In order to cooperate with independent power supply, a lateral conductive ring 18 for supplying power to the electromagnetic induction heating module 7 is installed on the upper surface of the horizontal mounting base 1 and located outside the horizontal heating guide tube 5 .

[0037] The lateral conductive ring 18 is fixed to the upper end of the horizontal mounting base 1 by brackets on both sides, and then is slidably connected to the conductive terminals on the outer arc surface of the horizontal heating guide tube 5. When the horizontal heating guide tube 5 rotates, it maintains power transmission connection with the power supply terminals on the inner wall of the strip mounting guide rail 61, thereby independently controlling the power transmission of the electromagnetic induction heating modules 7 at different positions.

[0038] Advantages of high temperature electromagnetic calcination process: 1) High efficiency and energy saving: The electromagnetic induction heating module 7 can quickly convert electrical energy into thermal energy, and the thermal energy is mainly transmitted through the self-induction heating method inside the ore, so that the iron ore can quickly reach the required high temperature and the heating speed is fast. Compared with traditional heating methods, such as burning coal and natural gas, it can greatly improve production efficiency and save energy. The energy saving rate can reach 10%-40%; 2) Electromagnetic heating can accurately control the heating temperature and power, avoiding the energy waste caused by the inaccurate temperature control of the traditional method. It can be adjusted in real time according to production needs to further improve energy utilization efficiency; 3) Good temperature uniformity: Electromagnetic heating can make the ultra-pure iron concentrate powder evenly heated in the kiln. Traditional calcination may cause overheating in some areas of the ore powder and insufficient temperature in some areas due to uneven distribution of heating sources and limitations on heat transfer methods, affecting product quality. Electromagnetic heating generates a uniform magnetic field, which makes the overall temperature of the mineral powder evenly rise, ensuring the stability and consistency of product quality and helping to obtain high-quality calcined products; 4) Environmentally friendly: The electromagnetic calcination process does not produce combustion exhaust gas, waste residue and other pollutants, and has little pollution to the environment, which meets environmental protection requirements. The fuel combustion used in traditional calcination will emit a large amount of carbon dioxide, sulfur dioxide, nitrogen oxides and particulate matter, causing serious pollution to the atmospheric environment. In addition, with increasingly stringent environmental regulations, the environmental pressure and cost faced by traditional calcination are increasing. 5) The electromagnetic calcination system has low noise during operation, which improves the working environment and reduces the impact on the health of operators. 6) Improved product quality: Precise temperature control and uniform heating effect are conducive to more sufficient and uniform physical and chemical reactions of ultra-pure iron concentrate powder during the calcination process, so that the purity, activity and other indicators of the product are better guaranteed and improved, thereby improving its performance in subsequent applications, such as in the fields of powder metallurgy, magnetic materials, etc. The application effect will be better; 7) Easy equipment maintenance: The electromagnetic heating system has a relatively simple structure, without complex mechanical transmission parts and wearing parts, high operating reliability, small maintenance workload, and reduced equipment maintenance costs and downtime; 8) Traditional calcination equipment (such as rotary kilns, etc.) is prone to wear and deformation of mechanical parts due to long-term operation under harsh conditions such as high temperature and heavy load, and requires regular overhaul and replacement, which has high maintenance costs and affects production continuity; 9) High degree of automation: The electromagnetic calcination system is easy to realize automatic control and can be closely integrated with modern industrial automation production lines. By configuring advanced sensors, controllers and automation software, it can accurately monitor and control various parameters in the calcination process (such as temperature, time, power, etc.), realize intelligent production, improve the stability and accuracy of the production process, and reduce the error and labor intensity of manual operation; 10) Strong heating flexibility: According to the characteristics of ultra-pure iron ore concentrate powder and different calcination process requirements, the electromagnetic heating parameters (such as frequency, power, etc.) can be flexibly adjusted to meet diverse production needs.For mineral powders of different batches and compositions, the best calcination effect can be achieved by optimizing the heating parameters, while the traditional calcination method is relatively difficult to adjust the process parameters.

[0039] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An electromagnetic induction heating calcining device for use in the production and processing of ultrapure iron ore concentrate powder, comprising a horizontal mounting base (1) and a drive motor (2), wherein: A plurality of bottom support seats (4) for mounting bottom support wheels (3) are fixedly mounted on the upper surface of the horizontal mounting base (1); a horizontal heating guide tube (5) is movably supported on the upper end of the bottom support wheel (3); a plurality of electromagnetic induction heating modules (7) are arranged on the outer side of the horizontal heating guide tube (5) via a lateral adjustment bracket (6); a gear transmission box (8) for transmission connection between a drive motor (2) and the horizontal heating guide tube (5) is fixedly mounted on the upper surface of the horizontal mounting base (1); and a lateral feed cover (9) and a lateral discharge cover (10) are respectively arranged on both sides of the horizontal heating guide tube (5) via lateral brackets.

2. The electromagnetic induction heating calcining equipment for the production and processing of ultrapure iron ore concentrate according to claim 1 is characterized in that: An annular support frame (11) that matches the bottom support wheel (3) is fixedly mounted on the outer arc surface of the horizontally placed heating guide tube (5).

3. The electromagnetic induction heating calcining equipment for the production and processing of ultrapure iron ore concentrate according to claim 1 is characterized in that: The gear transmission box (8) comprises a lateral cover (81) fixed to the upper surface of the horizontal mounting base (1), a driven gear (82) fixed to the outer arc surface of the horizontally placed heating guide tube (5), and a driving gear (83) fixed to the driving shaft of the driving motor (2); the driven gear (82) and the driving gear (83) are arranged inside the lateral cover (81) in meshing relationship.

4. The electromagnetic induction heating calcining equipment for the production and processing of ultrapure iron ore concentrate according to claim 1 is characterized in that: The lateral adjustment bracket (6) comprises a plurality of strip-shaped mounting rails (61) fixed on the outside of the horizontally placed heating guide tube (5), an internal adjustment screw (62) installed inside the strip-shaped mounting rail (61), an internal thread translation block (63) threadedly sleeved on the internal adjustment screw (62), a strip-shaped external mounting seat (64) fixed on the outside of the internal thread translation block (63), and an annular synchronous adjustment mechanism (65) fixed on one side of the strip-shaped mounting rail (61).

5. The electromagnetic induction heating calcining equipment for the production and processing of ultrapure iron ore concentrate according to claim 1 is characterized by: The upper surface of the horizontal mounting base (1) is fixedly equipped with lateral translation guide rails (12) on both sides of the horizontally placed heating material guide tube (5).

6. The electromagnetic induction heating calcining equipment for the production and processing of ultrapure iron ore concentrate according to claim 5 is characterized by: An electrically controlled translational stacked cover (13) is slidably mounted on the lateral translation guide rail (12) at one side of the gear transmission box.

7. The electromagnetic induction heating calcining equipment for the production and processing of ultrapure iron ore concentrate according to claim 1 is characterized by: A plurality of bottom stabilizing frames (14) are fixedly mounted on the upper surface of the horizontal mounting base (1) below the electromagnetic induction heating module (7).

8. The electromagnetic induction heating calcining equipment for the production and processing of ultrapure iron ore concentrate according to claim 1 is characterized by: A side feed pipe (15) is fixedly mounted on the outer surface of the side feed cover (9), an upper discharge pipe (16) is fixedly mounted on the upper surface of the side discharge cover (10), and a lower discharge pipe (17) is fixedly mounted on the lower surface of the side discharge cover (10).

9. The electromagnetic induction heating calcining equipment for the production and processing of ultrapure iron ore concentrate according to claim 1 is characterized by: An annular transmission guide groove (31) is provided on the outer arc surface of the bottom support wheel (3).

10. The electromagnetic induction heating calcining equipment for the production and processing of ultrapure iron ore concentrate according to claim 1 is characterized by: A lateral conductive ring (18) for supplying power to the electromagnetic induction heating module (7) is installed on the upper surface of the horizontal mounting base (1) and is located outside the horizontal heating guide tube (5).

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