Electrode paste raw material high-temperature calcination device

Abstract

The utility model relates to the technology of electrode paste production equipment, and discloses a high-temperature calcination device for electrode paste raw materials. During use, raw materials are put into the drying furnace from the feeding port, the raw materials are pretreated through the drying furnace, namely moisture on the surfaces of the raw materials is dried, uneven calcination caused by moisture accumulation on the surfaces of the raw materials is avoided, moisture on the surfaces of the raw materials is dried through the temperature of jacket steam, and the steam temperature cannot affect the electrode paste raw materials. Pretreated raw materials enter the calcining furnace from the feeding port, the graphite plate rapidly absorbs heat of heat conduction oil in the heat conduction pipe by means of the high-speed heat conduction performance of the graphite plate, and the absorbed heat is conducted into the whole calcining furnace, especially to the raw materials to be calcined on the graphite plate, so that the raw materials to be calcined are heated and calcined, and the calcining effect is improved. The atomizer is used for atomizing liquid water and outputting the atomized liquid water to the spraying head, the liquid water is sprayed to the raw materials in the calcining furnace through the spraying head in the calcining process, and the calcining effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrode paste production equipment, and more specifically, particularly relates to a high-temperature calcining device for electrode paste raw materials. Background Art

[0002] Electrode paste is a conductive material used in electric furnace equipment such as ferroalloy furnaces and calcium carbide furnaces. Electrode paste can withstand high temperatures, has a small thermal expansion coefficient, and has a relatively small resistivity, which can reduce the loss of electric energy. It has a small porosity, which can slow down the oxidation of the heated electrode and has a high mechanical strength, so that the electrode will not break due to the influence of mechanical and electrical loads. When the sintering temperature of the electrode paste is below 300°C, the electrode paste is in a plastic state and has the lowest mechanical strength. According to the test and calculation of technicians, the compressive strength is only 3-10MPa at this time, and there is almost no tensile strength. The soft fracture accident of the electrode paste in the electric furnace often occurs in this range. When the sintering temperature of the electrode paste is 300-800°C, the volatile matter of the coal tar has been discharged, and the remaining coal tar has been carbonized to form a network, which is fused with the raw materials of various electrode pastes, and the mechanical strength reaches the standard value.

[0003] Traditional electrode paste calcining equipment does not pre-dry the powder raw materials, resulting in uneven calcination of the powder raw materials, affecting the efficiency of the powder raw material calcination. In addition, when the calcination equipment is in use, uneven heating and calcination of the electrode paste raw materials are often encountered, which greatly affects the quality of the product. Utility Model Content

[0004] The present application provides a high-temperature calcination device for electrode paste raw materials, which solves the problem that traditional electrode paste calcination equipment does not pre-dry the powder raw materials, resulting in uneven calcination of the powder raw materials, affecting the efficiency of the powder raw material calcination, and when the calcination equipment is in use, it is often encountered that the heating and calcination of the electrode paste raw materials are uneven, which greatly affects the product quality.

[0005] The present application provides a high-temperature calcination device for electrode paste raw materials, comprising a calcining furnace and a drying furnace, the outer layer of the drying furnace is provided with a jacket, the jacket is provided with a steam inlet pipe and a steam outlet pipe, a material inlet is installed above the drying furnace, a feeding port is provided at the bottom of the drying furnace, the feeding port is connected with the calcining furnace, the outer layer of the calcining furnace is provided with a heat preservation layer, the calcining furnace is provided with a heating device, the calcining furnace is provided with a spray device, the spray device comprises a heating device, a mist pipe, an atomizer and a spray head, the spray head is placed inside the calcining furnace, a blower and a pressure sensor are installed on the inner wall of the calcining furnace, and exhaust fans are installed on the inner walls of the calcining furnace and the drying furnace.

[0006] Preferably, the heating device, the atomizer and the spray head are connected through the mist pipe, and the heating device and the atomizer are placed outside the calcining furnace.

[0007] Preferably, the heating device includes a graphite plate, a heat pipe, a thermal oil pump and a thermal oil heater, the thermal oil pump and the thermal oil heater are connected and arranged outside the calcining furnace, and the heat pipe is arranged in the graphite plate and passes through the calcining furnace to be connected to the thermal oil pump.

[0008] Preferably, the calcining furnace is welded on the frame.

[0009] Preferably, a support plate is fixedly mounted on the frame, and the thermal oil pump and the thermal oil heater are mounted on the support plate.

[0010] Preferably, the hair dryer is connected to a heater via an air inlet pipe.

[0011] Preferably, the exhaust fan is connected to a gas processing device via a gas delivery pipe.

[0012] It can be seen from the above technical scheme that the present application provides a high-temperature calcination device for electrode paste raw materials. When in use, the raw materials are put into the drying furnace from the feed port, and the raw materials are pre-treated by the drying furnace, that is, the moisture on the surface of the raw materials is dried to avoid uneven calcination due to moisture accumulation on the surface of the raw materials. The moisture on the surface of the raw materials is dried by the temperature of the jacket steam, and the steam temperature will not affect the electrode paste raw materials. The surface of the pre-treated raw materials is evenly calcined during deep calcination, the calcination effect is outstanding, the product efficiency is high, and the quality of the calcined powder raw material product is improved. The raw materials enter the calcination furnace from the feed port, and the raw materials enter the calcination furnace from the feed port. In the calcining furnace, the heat transfer oil is heated in the heat transfer oil heater. The heated heat transfer oil enters the graphite plate along the heat transfer pipe driven by the heat transfer oil pump. The graphite plate uses its high-speed heat transfer performance to quickly absorb the heat of the heat transfer oil in the heat transfer pipe, and conducts the absorbed heat to the entire calcining furnace, especially to the raw materials to be calcined placed on the graphite plate, so that the raw materials to be calcined are heated and calcined, thereby realizing the calcination of the raw materials to be calcined. The atomizer is used to atomize liquid water and output it to the spray head. During calcination, the spray head sprays the liquid water onto the raw materials in the calcining furnace to improve the calcination effect.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model pre-treats the raw materials through a drying furnace, that is, dries the moisture on the surface of the raw materials, so as to avoid uneven calcination due to moisture accumulation on the surface of the raw materials. The surface of the pre-treated raw materials is calcined evenly during deep calcination, the calcination effect is outstanding, the product efficiency is high, and the quality of the calcined raw material products is improved.

[0015] 2. The graphite plate in the utility model utilizes its high-speed heat conduction performance to quickly absorb the heat of the heat-conducting oil in the heat-conducting pipe, and conducts the absorbed heat to the entire calcining furnace, especially to the raw materials to be calcined placed on the graphite plate, so that the raw materials to be calcined are heated and calcined, thereby realizing the calcination of the raw materials to be calcined.

[0016] 3. The atomizer in the utility model is used to atomize liquid water and output it to the spray head, which is sprayed onto the raw materials in the calcining furnace during calcination to improve the calcination effect.

[0017] 4. The utility model uses an exhaust fan to transport the harmful gases generated during drying and calcining to the gas treatment equipment through the gas transportation equipment for centralized treatment before discharge, so as to prevent pollution of the atmospheric environment.

[0018] In summary, a high-temperature calcination device for electrode paste raw materials pre-treats the raw materials through a drying furnace, that is, dries the moisture on the surface of the raw materials to avoid uneven calcination due to moisture accumulation on the surface of the raw materials. The surface of the pre-treated raw materials is evenly calcined during deep calcination, the calcination effect is outstanding, the product efficiency is high, and the quality of the calcined raw material products is improved. The graphite plate uses its high-speed thermal conductivity to quickly absorb the heat of the heat-conducting oil in the heat pipe, and conducts the absorbed heat to the entire calcination furnace, especially to the raw materials to be calcined placed on the graphite plate, so that the raw materials to be calcined are heated and calcined, thereby realizing the calcination of the raw materials to be calcined, and the atomizer is used to atomize liquid water and output it to the spray head, which is sprayed onto the raw materials in the calcination furnace by the spray head during calcination, thereby improving the calcination effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without inventiveness.

[0020] Figure 1 This is a schematic structural diagram of a high-temperature calcination device for electrode paste raw materials provided by the utility model;

[0021] Figure 2 The utility model is a side view of a high-temperature calcining device for electrode paste raw materials.

[0022] The reference numerals in the specific implementation manner are as follows:

[0023] 1. Calcination furnace; 2. Drying furnace; 3. Blower; 4. Exhaust fan; 5. Graphite plate; 6. Heat pipe; 7. Thermal oil pump; 8. Thermal oil heater; 9. Atomizer; 10. Spray head; 11. Heating equipment; 12. Feed inlet; 13. Mist pipe; 14. Feeding port; 15. Jacket; 16. Steam inlet pipe; 17. Steam outlet pipe; 18. Rack; 19. Insulation layer; 20. Pressure sensor; 21. Support plate; 22. Gas processing equipment; 23. Heater; 24. Air inlet pipe; 25. Gas delivery pipe. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0025] See also Figure 1-2 , a high-temperature calcination device for electrode paste raw materials, in order to solve the problem that the traditional electrode paste calcination equipment does not pre-dry the powder raw materials, resulting in uneven calcination of the powder raw materials, affecting the efficiency of the powder raw materials calcination, and the calcination equipment often encounters the problem of uneven heating and calcination of the electrode paste raw materials during calcination, which greatly affects the product quality. A high-temperature calcination device for electrode paste raw materials is proposed, which pre-treats the raw materials through a drying furnace, that is, dries the moisture on the surface of the raw materials, avoids uneven calcination due to moisture accumulation on the surface of the raw materials, and When the raw materials are deeply calcined, the surface is calcined evenly, the calcination effect is outstanding, the product efficiency is high, and the quality of the calcined raw material products is improved. The graphite plate uses its high-speed thermal conductivity to quickly absorb the heat of the heat-conducting oil in the heat-conducting pipe, and conducts the absorbed heat to the entire calcining furnace, especially to the raw materials to be calcined placed on the graphite plate, so that the raw materials to be calcined are heated and calcined, thereby realizing the calcination of the raw materials to be calcined. The atomizer is used to atomize liquid water and output it to the spray head. During calcination, the spray head sprays the liquid water onto the raw materials in the calcining furnace, thereby improving the calcination effect. Specifically, a high-temperature calcination device for electrode paste raw materials includes a calcination furnace 1 and a drying furnace 2. The outer layer of the drying furnace 2 is provided with a jacket 15, and the jacket 15 is provided with a steam inlet pipe 16 and a steam outlet pipe 17. An inlet port 12 is installed above the drying furnace 2. The raw materials are put into the drying furnace 2 from the inlet port 12. The raw materials are pre-treated in the drying furnace 2, that is, the moisture on the surface of the raw materials is dried to avoid uneven calcination due to moisture accumulation on the surface of the raw materials. The moisture on the surface of the raw materials is dried by the temperature of the steam in the jacket 15, and the steam temperature will not affect the electrode paste raw materials.

[0026] A feed port 14 is provided at the bottom of the drying furnace 2, and the feed port 14 is connected to the calcining furnace 1. The outer layer of the calcining furnace 1 is provided with a heat-insulating layer 19. A heating device is provided on the calcining furnace 1, and the heating device includes a graphite plate 5, a heat-conducting pipe 6, a heat-conducting oil pump 7 and a heat-conducting oil heater 8. The heat-conducting oil pump 7 and the heat-conducting oil heater 8 are connected and arranged outside the calcining furnace 1. The heat-conducting pipe 6 is arranged in the graphite plate 5 and passes through the calcining furnace 1 to be connected to the heat-conducting oil pump 7. The raw material enters the calcining furnace 1 from the feed port 14, and the heat-conducting oil is heated in the heat-conducting oil heater 8. The heated heat-conducting oil pump 7 is connected to the heat-conducting oil heater 8. Driven by the heat-conducting oil pump 7, the hot oil enters the graphite plate 5 along the heat-conducting pipe 6. The graphite plate 5 uses its high-speed heat-conducting performance to quickly absorb the heat of the heat-conducting oil in the heat-conducting pipe 6, and conducts the absorbed heat to the entire calcining furnace 1, especially to the raw material to be calcined placed on the graphite plate 5, so that the raw material to be calcined is heated and calcined, thereby realizing the calcination of the raw material to be calcined. The surface of the pretreated raw material is evenly calcined during deep calcination, the calcination effect is outstanding, the product efficiency is high, and the quality of the calcined powder raw material product is improved.

[0027] A spray device is provided on the calcining furnace 1, and the spray device includes a heating device 11, a mist pipe 13, an atomizer 9 and a spray head 10. The spray head 10 is placed inside the calcining furnace 1. The heating device 11, the atomizer 9 and the spray head 10 are connected through the mist pipe 13. The heating device 11 and the atomizer 9 are placed outside the calcining furnace 1. The heating device 11 heats liquid water and passes it into the atomizer 9. The hot water mist will not have a significant impact on the temperature in the calcining furnace 1. The atomizer 9 is used to atomize the liquid water and output it to the spray head 10. During calcination, the spray head 10 sprays the liquid water onto the raw materials in the calcining furnace to improve the calcination effect.

[0028] The calcining furnace 1 is welded on a frame 18, a support plate 21 is fixedly mounted on the frame 18, a heat transfer oil pump 7 and a heat transfer oil heater 8 are mounted on the support plate 21, the frame 18 is used to stabilize the calcining furnace 1, and the support plate 21 fixedly mounted on the frame 18 enables the heat transfer oil pump 7 and the heat transfer oil heater 8 to be firmly mounted on the upper part; a blower 3 and a pressure sensor 20 are mounted on the inner wall of the calcining furnace 1, the pressure sensor 20 is installed to avoid the occurrence of safety accidents and improve the safety of the calcining furnace, the blower 3 is connected to a heater 23 through an air inlet pipe 24, The heater 23 can heat the cold air from the outside and then let it enter the calcining furnace 1 through the hair dryer 3, without affecting the temperature in the calcining furnace 1. Exhaust fans 4 are installed on the inner walls of the calcining furnace 1 and the drying furnace 2. The hair dryer 3 and the exhaust fan 4 can speed up the air flow rate to make the temperature in the calcining furnace balanced; the exhaust fan 4 is connected to the gas treatment equipment 22 through the gas delivery pipe 25. The exhaust fan transports the harmful gases generated during drying and calcining to the gas treatment equipment through the gas delivery equipment for centralized treatment and then discharge to prevent pollution of the atmospheric environment.

[0029] It can be seen from the above technical scheme that a high-temperature calcination device for electrode paste raw materials, when in use, puts the raw materials into the drying furnace 2 from the feed port 12, pre-treats the raw materials through the drying furnace 2, that is, dries the moisture on the surface of the raw materials to avoid uneven calcination due to moisture accumulation on the surface of the raw materials, and dries the moisture on the surface of the raw materials through the temperature of the steam in the jacket 15, and the steam temperature will not affect the electrode paste raw materials. The surface of the pre-treated raw materials is calcined evenly during deep calcination, the calcination effect is outstanding, the product efficiency is high, and the quality of the calcined powder raw material product is improved. The raw materials enter the calcination furnace 1 from the feed port 14, and the heat conduction The oil is heated in the thermal oil heater 8, and the heated thermal oil enters the graphite plate 5 along the heat pipe 6 under the drive of the thermal oil pump 7. The graphite plate 5 uses its high-speed thermal conductivity to quickly absorb the heat of the thermal oil in the heat pipe 6, and conducts the absorbed heat to the entire calcining furnace 1, especially to the raw material to be calcined placed on the graphite plate 5, so that the raw material to be calcined is heated and calcined, thereby realizing the calcination of the raw material to be calcined. The atomizer 9 is used to atomize liquid water and output it to the spray head 10. During calcination, the spray head 10 sprays the liquid water onto the raw material in the calcining furnace to improve the calcination effect.

[0030] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the application disclosed herein. The present invention is intended to cover any variation, use or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art disclosed by the present invention. The specification and examples are to be regarded as exemplary only, and the true scope of the present invention is indicated by the claims.

[0031] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present invention do not constitute a limitation on the scope of protection of the present invention.

Claims

1. A high temperature calcination device for electrode paste raw materials, characterized in that: The invention comprises a calcining furnace (1) and a drying furnace (2), wherein the outer layer of the drying furnace (2) is provided with a jacket (15), and the jacket (15) is provided with a steam inlet pipe (16) and a steam outlet pipe (17), a material inlet (12) is installed on the top of the drying furnace (2), and a material feed port (14) is provided at the bottom of the drying furnace (2), and the material feed port (14) is communicated with the calcining furnace (1), and the outer layer of the calcining furnace (1) is provided with a heat preservation layer (19), and the calcining furnace (1) is provided with a heating device, the calcining furnace (1) is provided with a spray device, the spray device comprises a heating device (11), a mist pipe (13), an atomizer (9) and a spray head (10), the spray head (10) is placed inside the calcining furnace (1), a blower (3) and a pressure sensor (20) are installed on the inner wall of the calcining furnace (1), and exhaust fans (4) are installed on the inner walls of the calcining furnace (1) and the drying furnace (2).

2. The high temperature calcination device for electrode paste raw materials according to claim 1, characterized in that: The heating device (11), the atomizer (9) and the spray head (10) are connected via the mist pipe (13), and the heating device (11) and the atomizer (9) are placed outside the calcining furnace (1).

3. The high temperature calcination device for electrode paste raw materials according to claim 1, characterized in that: The heating device comprises a graphite plate (5), a heat-conducting pipe (6), a heat-conducting oil pump (7) and a heat-conducting oil heater (8); the heat-conducting oil pump (7) and the heat-conducting oil heater (8) are connected and arranged outside the calcining furnace (1); the heat-conducting pipe (6) is arranged in the graphite plate (5) and passes through the calcining furnace (1) to be connected to the heat-conducting oil pump (7).

4. The high temperature calcination device for electrode paste raw materials according to claim 3, characterized in that: The calcining furnace (1) is welded to a frame (18).

5. The high temperature calcination device for electrode paste raw materials according to claim 4, characterized in that: A support plate (21) is fixedly mounted on the frame (18), and the thermal oil pump (7) and the thermal oil heater (8) are mounted on the support plate (21).

6. The high temperature calcination device for electrode paste raw materials according to claim 1, characterized in that: The hair dryer (3) is connected to a heater (23) via an air inlet pipe (24).

7. The high temperature calcination device for electrode paste raw materials according to claim 1, characterized in that: The exhaust fan (4) is connected to a gas processing device (22) via a gas delivery pipe (25).

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