Feeding and drying device for ore smelting furnace

Abstract

The utility model is suitable for the technical field of ore heating furnace, provide a kind of ore heating furnace feeding drying device, it includes: the base being arranged at the top of ore heating furnace, fixed mounting is equipped with the discharging box for discharging material on the base;Fixed mounting is equipped with the conveying box on the base, the conveying box and the discharging box are communicated, the conveying box is used to convey material after drying and water removal into ore heating furnace;Fixed mounting is equipped with the water tank on the base;Heating mechanism is assembled on the base, and the heating mechanism is used to heat and dry material in the conveying box and heat water in the water tank.The ore heating furnace feeding drying device provided by the utility model can perform advance drying operation on the material, and can avoid direct contact between ore heating furnace flue gas and the material, avoid the pollution of the material, and ensure the quality of subsequent material processing.

Description

Technical Field

[0001] This utility model relates to the field of electric arc furnace technology, and in particular to an electric arc furnace feeding and drying device. Background Technology

[0002] A submerged arc furnace, also known as an electric arc furnace or resistance furnace, is mainly used for the reduction and smelting of ores, carbonaceous reducing agents, and solvents. It primarily produces ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, and ferrosilicon-manganese alloys, which are important industrial raw materials in the metallurgical industry and chemical raw materials such as calcium carbide.

[0003] When processing materials using a submerged arc furnace, it is often necessary to first dry the materials using a corresponding submerged arc furnace feeding and drying device in order to better process the materials. According to the patent document with authorization announcement number CN216953998U, a submerged arc furnace feeding and energy-saving drying device is disclosed. It dries the materials by directly contacting the flue gas generated during the combustion process of the submerged arc furnace with the materials. However, the flue gas contains a lot of tail gas dust, sulfur, phosphorus and other impurities (such as unburned tar or sulfides). These impurities will contaminate the materials, thereby reducing the quality of the products in subsequent processing. Utility Model Content

[0004] To address the technical problem mentioned in the background art, where some existing electric arc furnace feeding and drying devices directly contact the flue gas generated by the combustion of the electric arc furnace with the materials, resulting in easy contamination of the materials, this utility model provides an electric arc furnace feeding and drying device.

[0005] The electric arc furnace feeding and drying device provided by this utility model includes: a base disposed on the top of the electric arc furnace, on which a feeding box for feeding materials is fixedly installed; a conveyor box fixedly installed on the base, the conveyor box and the feeding box being connected, the conveyor box being used to convey the dried and dehydrated materials into the electric arc furnace; a water tank fixedly installed on the base; a heating mechanism assembled on the base, the heating mechanism being used to heat and dry the materials in the conveyor box and to heat the water in the water tank; and a drying mechanism assembled on the water tank and the feeding box for drying the materials in the feeding box.

[0006] Preferably, the heating mechanism includes: a mounting cover fixedly installed on the outer wall of the conveying box, the mounting cover being provided with a guide pipe, one end of the guide pipe being connected to the flue gas exhaust pipe of the submerged arc furnace, the guide pipe being used to guide the flue gas generated by the combustion of the submerged arc furnace; a mounting cavity opened on the water tank, a connecting pipe being fixedly installed in the mounting cavity, one end of the connecting pipe being connected to the other end of the guide pipe; and a fan fixedly installed on the base, the air inlet of the fan being connected to the other end of the connecting pipe.

[0007] Preferably, the drying mechanism includes: a water pump fixedly installed on the top of the water tank; a water inlet pipe fixedly installed on the water tank, the water inlet pipe being connected to the water inlet end of the water pump; and a circulation pipe fixedly installed in the placement cavity on the feeding box, one end of the circulation pipe being connected to the water outlet end of the water pump, and the other end of the circulation pipe being connected to the water tank.

[0008] Preferably, the water tank is provided with an insulation board, which is used to keep the water in the water tank warm.

[0009] Preferably, the conveying box is provided with a conveying mechanism for conveying materials into the electric arc furnace. The conveying mechanism includes: an auger rotatably installed inside the conveying box; and a servo motor fixedly installed on the outer wall of one side of the conveying box. The output shaft of the servo motor is connected to the rotating shaft of the auger through a coupling.

[0010] Preferably, a stirring frame is rotatably installed inside the water tank, the stirring frame is used to stir the water in the water tank, and the stirring frame is fixedly connected to one end of the auger.

[0011] Preferably, the bottom of the conveyor box is provided with a feeding pipe, which is used to feed the dried material into the electric arc furnace.

[0012] Compared with related technologies, the electric arc furnace feeding and drying device provided by this utility model has the following beneficial effects:

[0013] This utility model provides a feeding and drying device for a submerged arc furnace, which can pre-dry materials and avoid direct contact between the flue gas from the submerged arc furnace and the materials, thus preventing material contamination and ensuring the quality of subsequent material processing. Attached Figure Description

[0014] Figure 1 A front view schematic diagram of a preferred embodiment of the electric arc furnace feeding and drying device provided by this utility model;

[0015] Figure 2 This is a frontal sectional view of the present invention.

[0016] Figure 3 for Figure 2 An enlarged structural diagram of part A shown in the figure;

[0017] Figure 4 for Figure 2 The diagram shows an enlarged view of part B.

[0018] The following are the labels in the diagram: 1. Base; 2. Feeding box; 3. Conveying box; 4. Water tank; 5. Mounting cover; 501. Guide pipe; 6. Mounting cavity; 7. Connecting pipe; 8. Fan; 9. Water pump; 10. Water inlet pipe; 11. Placement cavity; 12. Circulation pipe; 13. Screwdriver; 14. Servo motor; 15. Mixing rack. Detailed Implementation

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification and the foregoing drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification or the foregoing drawings are used to distinguish different objects, not to describe a specific order; the terms "inner," "outer," "left," and "right" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] This utility model embodiment provides a feeding and drying device for a submerged arc furnace, such as... Figure 1-4 As shown, the electric arc furnace feeding and drying device includes: a base 1 set on the top of the electric arc furnace, on which a feeding box 2 for feeding materials is fixedly installed; a conveying box 3 fixedly installed on the base 1, the conveying box 3 and the feeding box 2 being connected, the conveying box 3 being used to convey the dried and dehydrated materials into the electric arc furnace; a water tank 4 fixedly installed on the base 1; a heating mechanism assembled on the base 1, the heating mechanism being used to heat and dry the materials in the conveying box 3 and to heat the water in the water tank 4; and a drying mechanism assembled on the water tank 4 and the feeding box 2 for drying the materials in the feeding box 2.

[0022] In this embodiment, the entire device is first installed on top of the electric arc furnace. The device is equipped with a controller (model OMRONE5CC-QX2ASM-800) to control the entire device. When processing semi-coke using the electric arc furnace, the semi-coke material is placed into the feeding box 2. The high-temperature flue gas generated by the combustion of the electric arc furnace heats the water in the water tank 4 through a heating mechanism. Then, the hot water in the water tank 4 is continuously circulated back to the feeding box 2 through a drying mechanism. Based on the principle of heat exchange, the material in the feeding box 2 is heated, dried, and dehydrated. The dried and dehydrated semi-coke material enters the conveying box 3, where the heating mechanism... During use, the semi-coke material entering the conveyor box 3 will undergo a second drying operation, effectively improving the drying effect. The dried material enters the electric arc furnace. By pre-drying the material, the evaporation and heat loss of the material's moisture in the electric arc furnace are reduced, improving the subsequent drying effect of the electric arc furnace. During the overall material drying process, direct contact between the electric arc furnace flue gas and the material can be effectively avoided, preventing material contamination and ensuring the quality of subsequent material processing. This device can pre-dry the material and prevent direct contact between the electric arc furnace flue gas and the material, thus avoiding material contamination and ensuring the quality of subsequent material processing.

[0023] In a further preferred embodiment of this utility model, the heating mechanism includes: a mounting cover 5 fixedly installed on the outer wall of the conveying box 3, a guide pipe 501 provided on the mounting cover 5, one end of the guide pipe 501 being connected to the flue gas discharge pipe of the electric arc furnace, and the guide pipe 501 being used to guide the flue gas generated by the combustion of the electric arc furnace; a mounting cavity 6 opened on the water tank 4, a connecting pipe 7 fixedly installed in the mounting cavity 6, one end of the connecting pipe 7 being connected to the other end of the guide pipe 501; and a fan 8 fixedly installed on the base 1, the air inlet end of the fan 8 being connected to the other end of the connecting pipe 7.

[0024] In this embodiment, in actual use, the flue gas generated by the combustion of the electric arc furnace is introduced through the guide pipe 501, and then drawn by the fan 8 after passing through the connecting pipe 7. The air outlet of the fan 8 is connected to the corresponding filtration and dust removal equipment. During the flow of the flue gas, the heat it carries is transferred to the conveying box 3 and the water tank 4, thereby realizing the heating and drying of the materials in the conveying box 3 and the heating of the water in the water tank 4.

[0025] In a further preferred embodiment of the present invention, the drying mechanism includes: a water pump 9 fixedly installed on the top of the water tank 4; a water inlet pipe 10 fixedly installed on the water tank 4, the water inlet pipe 10 being connected to the water inlet end of the water pump 9; and a circulation pipe 12 fixedly installed in the placement cavity 11 on the unloading box 2, one end of the circulation pipe 12 being connected to the water outlet end of the water pump 9, and the other end of the circulation pipe 12 being connected to the water tank 4.

[0026] In this embodiment, in actual use, the high-temperature flue gas from the electric arc furnace flowing through the connecting pipe 7 heats the water in the water tank 4, raising the water temperature in the water tank 4. The water tank 4 is equipped with a PT100 temperature sensor to monitor the temperature inside the water tank 4. The controller starts the water pump 9, which draws hot water from the water tank 4 through the inlet pipe 10. After being pressurized by the water pump 9, the hot water enters the circulation pipe 12. The circulation pipe 12 is located in the placement cavity 11 of the feeding box 2. When the hot water flows in the circulation pipe 12, the heat it carries is transferred to the material in the feeding box 2, drying the material. Afterward, the hot water flows back to the water tank 4 from the other end of the circulation pipe 12, forming a circulation loop to continuously dry the material in the feeding box 2.

[0027] In a further preferred embodiment of this utility model, a heat insulation board is provided on the water tank 4, and the heat insulation board is used to keep the water in the water tank 4 warm.

[0028] In this embodiment, after the heating mechanism heats the water in the water tank 4 and raises the water temperature, the heat preservation plate begins to function. It can reduce the heat loss of the water in the water tank 4 to the surrounding environment and maintain the water temperature in the water tank 4 in a relatively stable and high state.

[0029] In a further preferred embodiment of the present invention, the conveying box 3 is provided with a conveying mechanism for conveying materials into the electric arc furnace. The conveying mechanism includes: an auger 13 rotatably installed in the conveying box 3; and a servo motor 14 fixedly installed on one side of the outer wall of the conveying box 3. The output shaft of the servo motor 14 is connected to the rotating shaft of the auger 13 through a coupling.

[0030] In this embodiment, in actual use, after the material in the feeding box 2 is dried by the drying mechanism, the material enters the conveying box 3. At this time, the servo motor 14 is started by the controller. The output shaft of the servo motor 14 drives the rotating shaft of the auger 13 to rotate through the coupling, thereby causing the auger 13 to rotate in the conveying box 3. During the rotation, the auger 13 uses the pushing action of its spiral blades to gradually transport the material from one end of the conveying box 3 to the other end, and finally transports the dried material into the electric arc furnace.

[0031] In a further preferred embodiment of the present invention, a stirring rack 15 is rotatably installed inside the water tank 4. The stirring rack 15 is used to stir the water in the water tank 4, and one end of the stirring rack 15 is fixedly connected to the auger 13.

[0032] In this embodiment, when the servo motor 14 starts and drives the auger 13 to rotate to transport materials, since the mixing frame 15 and one end of the auger 13 are fixedly connected, the rotation of the auger 13 will synchronously drive the mixing frame 15 to rotate in the water tank 4. The mixing frame 15 continuously stirs in the water tank 4, which can make the water in different positions in the water tank 4 fully mixed, so that the heat can be transferred more evenly to the water in the entire water tank 4, avoiding local water temperature being too high or too low, and improving the heating uniformity of the water in the water tank 4.

[0033] In a further preferred embodiment of the present invention, a feeding pipe is provided at the bottom of the conveying box 3, and the feeding pipe is used to feed the dried material into the electric arc furnace.

[0034] In this embodiment, after the material is conveyed to a position near the discharge pipe by the auger 13 in the conveying box 3, due to the material's own gravity and the continuous pushing action of the auger 13, the material will smoothly enter the electric arc furnace through the discharge pipe at the bottom of the conveying box 3, completing the entire flow of the material from drying to entering the electric arc furnace.

[0035] In summary, compared with related technologies, this device can pre-dry materials and avoid direct contact between the flue gas from the electric arc furnace and the materials, thus preventing material contamination and ensuring the quality of subsequent material processing.

[0036] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0037] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A charging and drying device for a smelting furnace, characterized in that include: A base is set on the top of the electric arc furnace, and a feeding box for feeding materials is fixedly installed on the base; A conveyor box is fixedly installed on the base, and the conveyor box is connected to the feeding box. The conveyor box is used to convey the dried and dehydrated material into the electric arc furnace. The water tank is fixedly installed on the base; A heating mechanism mounted on the base is used to heat and dry the material in the conveying box and to heat the water in the water tank. A drying mechanism assembled on the water tank and the feeding box for drying the material in the feeding box.

2. The charging and drying device of the ore smelting furnace according to claim 1, characterized in that, The heating mechanism includes: A mounting cover is fixedly installed on the outer wall of the conveying box. A guide pipe is provided on the mounting cover. One end of the guide pipe is connected to the flue gas discharge pipe of the electric arc furnace. The guide pipe is used to guide the flue gas generated by the combustion of the electric arc furnace. An installation cavity is formed on the water tank, and a connecting pipe is fixedly installed in the installation cavity. One end of the connecting pipe is connected to the other end of the guide pipe. A fan is fixedly installed on the base, and the air inlet of the fan is connected to the other end of the connecting pipe.

3. The charging and drying device of the ore smelting furnace according to claim 1, characterized in that, The drying mechanism includes: The water pump is fixedly installed on top of the water tank; A water inlet pipe is fixedly installed on the water tank, and the water inlet pipe is connected to the water inlet end of the water pump; A circulation pipe is fixedly installed in the placement cavity on the feeding box. One end of the circulation pipe is connected to the water outlet of the water pump, and the other end of the circulation pipe is connected to the water tank.

4. The charging and drying device of the ore smelting furnace according to claim 1, characterized in that, The water tank is equipped with an insulation board, which is used to keep the water in the tank warm.

5. The charging and drying device of the ore smelting furnace according to claim 1, characterized in that, The conveyor box is equipped with a conveying mechanism for conveying materials into the submerged arc furnace, the conveying mechanism comprising: Rotate the auger installed inside the conveyor box; A servo motor is fixedly installed on the outer wall of one side of the conveyor box, and the output shaft of the servo motor is connected to the rotating shaft of the auger through a coupling.

6. The charging and drying device of the ore smelting furnace according to claim 5, characterized in that, A stirring frame is rotatably installed inside the water tank. The stirring frame is used to stir the water in the water tank, and the stirring frame is fixedly connected to one end of the auger.

7. The submerged arc furnace feeding and drying device according to claim 1, characterized in that, The bottom of the conveyor box is equipped with a feeding pipe, which is used to feed the dried material into the electric arc furnace.

Images