Compound non-metal continuous rotary furnace

Abstract

The present invention belongs to the technical field of rotary furnaces, and particularly relates to a composite non-metal continuous rotary furnace. The rotary furnace includes a feed bin, a furnace head, a furnace head seal, a furnace tube, a furnace tail seal, and a furnace tail. The furnace tube is heated by an internal heating method or an electromagnetic induction external heating method. The furnace tube comprises a plurality of unit furnace tubes, and an electromagnetic clutch I is connected between two adjacent unit furnace tubes. A driving mechanism is arranged outside the unit furnace tube. When the electromagnetic clutch I is powered on, the connection relationship between the unit furnace tubes on both sides thereof is a fixed connection capable of synchronous rotation. When the electromagnetic clutch I is powered off, the connection relationship between the unit furnace tubes on both sides thereof is a rotating connection capable of independent rotation. The furnace tube structure in the composite non-metal continuous rotary furnace of the present invention is reasonably designed. The unit furnace tubes in the furnace tube structure can rotate synchronously and can also rotate freely according to requirements, with good versatility, meeting the basic requirements for rotary furnace heating of different materials in various industries.

Description

Technical Field

[0001] The present invention belongs to the technical field of rotary kilns, and particularly relates to a composite non-metal continuous rotary kiln. Background Art

[0002] A rotary kiln is a thermal processing equipment for calcining, roasting or drying granular and powdery materials, and is specifically applicable to: 1) Environmental protection industry: activated carbon (air purification activated carbon, water purification activated carbon, hemodialysis activated carbon, supercapacitor activated carbon, desulfurization and denitrification activated carbon, etc.), biochar, coal-based carbon, etc. 2) Lithium battery materials: drying and roasting of cathode materials (iron phosphate, lithium iron phosphate, ternary precursor, lithium manganate, lithium carbonate, etc.), drying treatment of anode materials, calcination treatment, secondary recycling treatment of lithium battery materials. 3) Chemical catalyst industry: high-temperature purification of metallurgical catalysts, drying and high-temperature calcination of various additives, etc. 4) Rare earth industry: drying and roasting of rare earths, calcination treatment of rare earths such as spodumene, catalyst products such as zinc and manganese. 5) Metal powder industry: high-temperature sintering, oxidation and reduction of tungsten, molybdenum, ammonium molybdate, vanadium oxide, vanadium pentoxide, flake vanadium, etc.

[0003] Most of the existing rotary kilns have a structure as Figure 1 shown, including a feed bin 1a, a furnace head 2a, a furnace head seal 3a, a furnace tube 4a, a furnace tail seal 5a and a furnace tail 6a, wherein the furnace tube 4a is fixedly connected by a plurality of unit furnace tubes. This structure of the rotary kiln has some deficiencies in the use process. One is that its unit furnace tubes can only rotate synchronously, and the rotation of the unit furnace tubes is restricted by many factors. It cannot pre-rotate a suitable number of unit furnace tubes according to the running situation of the materials, resulting in large energy consumption; nor can it select adjacent multiple unit furnace tubes to rotate out of sync. The second is that the protruding height and angle of the material lifting plates in the unit furnace tubes are fixed and cannot be adjusted according to the running situation of the materials, thus unable to meet the requirements of process optimization of different materials in various industries. The third is that the material design of the unit furnace tubes is unreasonable, and its high-temperature resistance, wear resistance and corrosion resistance need to be further improved.

[0004] Therefore, it is necessary to optimize and improve the existing rotary kiln to better meet the requirements of process optimization of different materials in various industries. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above problems existing in the traditional technology and provide a composite non-metal continuous rotary kiln.

[0006] To achieve the above technical purpose and reach the above technical effect, the present invention is realized through the following technical solutions:

[0007] Composite non-metal continuous rotary furnace. The rotary furnace includes a feed bin, a furnace head, a furnace head seal, a furnace tube, a furnace tail seal and a furnace tail. The furnace tube is heated by an internal heating method or an electromagnetic induction external heating method. It is characterized in that: the furnace tube comprises a plurality of unit furnace tubes, and an electromagnetic clutch I is connected between two adjacent unit furnace tubes. A driving mechanism is arranged outside the unit furnace tube.

[0008] Further, in the composite non-metal continuous rotary furnace as described above, when the electromagnetic clutch I is energized, the connection relationship between the unit furnace tubes on both sides thereof is a fixed connection capable of synchronous rotation. When the electromagnetic clutch I is de-energized, the connection relationship between the unit furnace tubes on both sides thereof is a rotating connection capable of independent rotation.

[0009] Further, in the composite non-metal continuous rotary furnace as described above, the unit furnace tube is composed of an outer furnace body and an inner furnace body, and an electromagnetic clutch I is connected between the outer furnace bodies of two adjacent unit furnace tubes.

[0010] Further, in the composite non-metal continuous rotary furnace as described above, a driven gear ring is installed on the outer wall of the outer furnace body of the unit furnace tube.

[0011] Further, in the composite non-metal continuous rotary furnace as described above, the driving mechanism includes a base. A driving motor, a support and a bracket are fixed on the base. An activity channel for facilitating the rotation of the unit furnace tube is provided in the support. An electromagnetic clutch II is fixedly installed on the bracket. One end of the electromagnetic clutch II is fixedly connected to the output shaft of the driving motor, and the other end is fixedly connected to one end of a transmission shaft. The transmission shaft extends into the other end of the support and is provided with a transmission gear meshing with the driven gear ring.

[0012] Further, in the composite non-metal continuous rotary furnace as described above, guide support rings are symmetrically installed on both sides of the driven gear ring on the outer wall of the outer furnace body of the unit furnace tube. An annular support groove matching with the guide support ring is provided on the inner wall of the activity channel. An activity cavity for facilitating the movement of the driven gear ring and the transmission gear is provided on the inner wall of the activity channel.

[0013] Further, in the composite non-metal continuous rotary furnace as described above, when the electromagnetic clutch II is energized, the connection relationship between the output shaft of the driving motor and the transmission shaft is a fixed connection capable of synchronous rotation. When the electromagnetic clutch II is de-energized, the connection relationship between the output shaft of the driving motor and the transmission shaft is a rotating connection capable of independent rotation.

[0014] Furthermore, for the composite non-metallic continuous rotary furnace as described above, a number of rings of material lifting plate assemblies are installed on the unit furnace tubes. The material lifting plate assembly includes a mounting post, which is installed on the unit furnace tube by screwing. The unit furnace tube is provided with a threaded mounting groove penetrating through the outer furnace body and the inner furnace body. The lower end of the mounting post is inwardly provided with a hexagonal groove I. Above the hexagonal groove I of the mounting post, a rotatable height-adjusting rotating shaft is installed. The lower end of the height-adjusting rotating shaft is provided with a hexagonal groove II communicating with the hexagonal groove I, and the lower end surface of the hexagonal groove II is not lower than the upper end surface of the hexagonal groove I. A bevel gear I is fixed to the upper end of the height-adjusting rotating shaft. The top end of the mounting post is rotationally supported by a mounting shaft. One end of the mounting shaft is fixed with a bevel gear II meshing with the bevel gear I. A material lifting plate is fixed to the outside of the mounting shaft.

[0015] Furthermore, for the composite non-metallic continuous rotary furnace as described above, the material of the outer furnace body of the unit furnace tube is ZrB2 composite ceramic material. When the magnetic flux of the alternating magnetic field passes through the furnace body made of ZrB2 composite ceramic material, eddy currents will be generated, and a large amount of heat will be generated in the furnace chamber made of ZrB2 composite ceramic material, and the outer furnace body will heat up; a tubular electromagnetic induction heater is additionally provided on the outside of the unit furnace tube, and the tubular shell of the electromagnetic induction heater also serves as a heat preservation device.

[0016] Furthermore, for the composite non-metallic continuous rotary furnace as described above, the material of the inner furnace body of the unit furnace tube is silicon carbide composite ceramic material. The preparation method of the silicon carbide composite ceramic material includes the following steps: the powder obtained by spray granulating the mixed raw material slurry is dry-pressed into a silicon carbide composite ceramic blank, and the blank is sintered at 2000-2100 °C for 2-4 h in a vacuum atmosphere to obtain the silicon carbide composite ceramic; the mixed raw materials include the following components: 50-70 wt.% of silicon carbide, 3-5 wt.% of titanium diboride, 0.5-2 wt.% of boron carbide, and the balance is a phenolic resin binder.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. In the present invention, the structure of the furnace tube is reasonably designed. The unit furnace tubes can rotate synchronously and can also rotate freely according to requirements. On this basis, an appropriate number of unit furnace tubes can be selected for pre-rotation according to the operation of the material, with relatively low energy consumption; it is also possible to select multiple adjacent unit furnace tubes to rotate out of sync. The rotation of the unit furnace tubes is less restricted, and the versatility is better, meeting the basic requirements for the rotary furnace heating of different materials in various industries.

[0019] 2. In the present invention, the material lifting plate assembly on the unit furnace tube is reasonably designed. The protruding height and angle of the material lifting plate in the material lifting plate assembly are adjustable and can be adjusted according to the operation of the material, thereby meeting the requirements for the process optimization of different materials in various industries.

[0020] 3. In the present invention, the unit furnace tube is composed of an outer furnace body and an inner furnace body. The material of the outer furnace body is ZrB2 composite ceramic material, which is suitable for external electromagnetic induction heating; the material of the inner furnace body is silicon carbide composite ceramic material, which is suitable for internal heating mode and has high temperature resistance, wear resistance and corrosion resistance.

[0021] Of course, it is not necessary for any product implementing the present invention to achieve all of the above advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic structural diagram of the rotary furnace in the background art;

[0024] Figure 2 It is a schematic structural diagram of the furnace tube in the present invention;

[0025] Figure 3 It is a schematic structural diagram of the unit furnace tube and the rotating mechanism in the present invention;

[0026] Figure 4 It is a schematic composition diagram of the unit furnace tube in the present invention;

[0027] Figure 5 It is a schematic position diagram of the material lifting plate assembly in the present invention;

[0028] Figure 6 It is a schematic structural diagram of the material lifting plate assembly in the present invention;

[0029] Figure 7 It is a schematic diagram of the state after the height of the material lifting plate in the present invention is adjusted;

[0030] Figure 8 It is a schematic diagram of the state after the angle of the material lifting plate in the present invention is adjusted;

[0031] In the drawings, the reference numerals of each component are as follows:

[0032] 1 - unit furnace tube, 101 - outer furnace body, 102 - inner furnace body, 2 - electromagnetic clutch I, 3 - base, 4 - drive motor, 5 - support, 6 - bracket, 7 - electromagnetic clutch II, 8 - transmission shaft, 9 - transmission gear, 10 - driven gear ring, 11 - guiding support ring, 12 - threaded installation groove, 13 - material lifting plate assembly, 131 - installation column, 132 - hexagonal groove I, 133 - height - adjusting rotating shaft, 134 - hexagonal groove II, 135 - bevel gear I, 136 - bevel gear II, 137 - installation shaft, 138 - material lifting plate. Detailed implementation manners

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0034] Embodiment 1

[0035] This embodiment is a composite non - metallic continuous rotary furnace. The rotary furnace includes a feed bin, a furnace head, a furnace head seal, furnace tubes, a furnace tail seal, and a furnace tail. The furnace tubes are heated by an internal heating method or an electromagnetic induction external heating method. As Figure 2 shown, the furnace tubes include several unit furnace tubes 1, and an electromagnetic clutch I 2 is connected between two adjacent unit furnace tubes 1. When the electromagnetic clutch I 2 is energized, the connection relationship between the unit furnace tubes 1 on both sides of it is a fixed connection that can rotate synchronously. When the electromagnetic clutch I 2 is de - energized, the connection relationship between the unit furnace tubes 1 on both sides of it is a rotational connection that can rotate independently. A driving mechanism is provided on the outer side of the unit furnace tube 1.

[0036] As Figure 3 shown, the unit furnace tube 1 is composed of an outer furnace body 101 and an inner furnace body 102. An electromagnetic clutch I 2 is connected between the outer furnace bodies 101 of two adjacent unit furnace tubes 1. The inside of the electromagnetic clutch I 2 is provided with a channel for facilitating the flow of materials, and the outer diameter of the channel matches the outer diameter of the inner furnace body 102. On the outer wall of the outer furnace body 101 of the unit furnace tube 1, a driven gear ring 10 and guiding support rings 11 on both sides of it are installed.

[0037] As Figure 4As shown in the figure, the driving mechanism includes a base 3, on which a driving motor 4, a support 5 and a bracket 6 are fixed. An activity channel for facilitating the rotation of the unit furnace tube 1 is provided in the support 5, and an annular support groove for cooperating with the guiding support ring 11 is provided on the inner wall of the activity channel. An electromagnetic clutch II 7 is fixedly installed on the bracket 6. One end of the electromagnetic clutch II 7 is fixedly connected to the output shaft of the driving motor 4, and the other end is fixedly connected to one end of a transmission shaft 8. The transmission shaft 8 extends into the other end of the support 5 and is provided with a transmission gear 9 that meshes with a driven gear ring 10. An activity cavity for facilitating the movement of the driven gear ring 10 and the transmission gear 9 is provided on the inner wall of the activity channel. When the electromagnetic clutch II 7 is energized, the connection relationship between the output shaft of the driving motor 4 and the transmission shaft 8 is a fixed connection capable of synchronous rotation. When the electromagnetic clutch II 7 is de-energized, the connection relationship between the output shaft of the driving motor 4 and the transmission shaft 8 is a rotational connection capable of independent rotation.

[0038] A specific application of this embodiment is as follows: In this embodiment, the furnace tube structure is reasonably designed. The unit furnace tube 1 can not only rotate synchronously but also rotate freely according to requirements. On this basis, an appropriate number of unit furnace tubes 1 can be selected for pre-rotation according to the operation of the material, with relatively low energy consumption. It is also possible to select multiple adjacent unit furnace tubes 1 to rotate non-synchronously. The rotation of the unit furnace tube 1 is less restricted, with good versatility, meeting the basic requirements for the heating of rotary furnaces with different materials in various industries.

[0039] Embodiment Two

[0040] This embodiment is a composite non-metallic continuous rotary furnace, which includes a feed bin, a furnace head, a furnace head seal, furnace tubes, a furnace tail seal and a furnace tail. The furnace tubes are heated by an internal heating method or an electromagnetic induction external heating method. As Figure 2 shown in the figure, the furnace tubes include several unit furnace tubes 1, and an electromagnetic clutch I 2 is connected between two adjacent unit furnace tubes 1. When the electromagnetic clutch I 2 is energized, the connection relationship between the unit furnace tubes 1 on both sides of it is a fixed connection capable of synchronous rotation. When the electromagnetic clutch I 2 is de-energized, the connection relationship between the unit furnace tubes 1 on both sides of it is a rotational connection capable of independent rotation. A driving mechanism is provided outside the unit furnace tube 1.

[0041] As Figure 3 shown in the figure, the unit furnace tube 1 is composed of an outer furnace body 101 and an inner furnace body 102. An electromagnetic clutch I 2 is connected between the outer furnace bodies 101 of two adjacent unit furnace tubes 1. A channel for facilitating the flow of materials is provided inside the electromagnetic clutch I 2, and the outer diameter of the channel matches the outer diameter of the inner furnace body 102. A driven gear ring 10 and guiding support rings 11 on both sides thereof are installed on the outer wall of the outer furnace body 101 of the unit furnace tube 1.

[0042] As Figure 4As shown in the figure, the driving mechanism includes a base 3, on which a driving motor 4, a support 5 and a bracket 6 are fixed. An activity channel for facilitating the rotation of the unit furnace tube 1 is provided in the support 5, and an annular support groove for cooperating with the guiding support ring 11 is provided on the inner wall of the activity channel. An electromagnetic clutch II 7 is fixedly installed on the bracket 6. One end of the electromagnetic clutch II 7 is fixedly connected to the output shaft of the driving motor 4, and the other end is fixedly connected to one end of a transmission shaft 8. The transmission shaft 8 extends into the other end of the support 5 and is provided with a transmission gear 9 meshing with a driven gear ring 10. An activity cavity for facilitating the movement of the driven gear ring 10 and the transmission gear 9 is provided on the inner wall of the activity channel. When the electromagnetic clutch II 7 is energized, the connection relationship between the output shaft of the driving motor 4 and the transmission shaft 8 is a fixed connection capable of synchronous rotation. When the electromagnetic clutch II 7 is de-energized, the connection relationship between the output shaft of the driving motor 4 and the transmission shaft 8 is a rotational connection capable of independent rotation.

[0043] As Figure 5 and Figure 6 shown in the figure, a plurality of circles of material lifting plate assemblies 13 are installed on the unit furnace tube 1. The material lifting plate assembly 13 includes a mounting post 131, which is installed on the unit furnace tube 1 by screwing. The unit furnace tube 1 is provided with a threaded mounting groove 12 penetrating through the outer furnace body 101 and the inner furnace body 102. The lower end of the mounting post 131 is internally provided with a hexagonal groove I 132. Above the hexagonal groove I 132 of the mounting post 131, a rotatable height-adjusting rotating shaft 133 is installed. The lower end of the height-adjusting rotating shaft 133 is provided with a hexagonal groove II 134 communicating with the hexagonal groove I 132, and the lower end face of the hexagonal groove II 134 is not lower than the upper end face of the hexagonal groove I 132. A bevel gear I 135 is fixed to the upper end of the height-adjusting rotating shaft 133. The top end of the mounting post 131 is rotationally supported by a mounting shaft 137. One end of the mounting shaft 137 is fixed with a bevel gear II 136 meshing with the bevel gear I 135. A material lifting plate 138 is fixed to the outside of the mounting shaft 137.

[0044] A specific application of this embodiment is as follows: When it is necessary to adjust the height of the material lifting plate 138 in the material lifting plate assembly 13, a first hexagonal wrench is inserted into the hexagonal groove I 132 and rotated to drive the mounting post 131 to rotate, thereby driving the height of the material lifting plate 138 to change and realizing height adjustment, as Figure 7 shown in the figure. When it is necessary to adjust the angle of the material lifting plate 138 in the material lifting plate assembly 13, a second hexagonal wrench is inserted into the hexagonal groove II 134 and rotated to drive the height-adjusting rotating shaft 133 to rotate. The mounting shaft 137 is driven to rotate through the conical steering gear set, thereby driving the angle of the material lifting plate 138 to change and realizing angle adjustment, as Figure 8 shown in the figure.

[0045] Embodiment III

[0046] This embodiment is a composite non-metal continuous rotary furnace, which includes a feed bin, a furnace head, a furnace head seal, a furnace tube, a furnace tail seal and a furnace tail. The furnace tube is heated by an internal heating method or an electromagnetic induction external heating method. As Figure 2 shown, the furnace tube includes several unit furnace tubes 1, and an electromagnetic clutch I 2 is connected between two adjacent unit furnace tubes 1. When the electromagnetic clutch I 2 is energized, the connection relationship between the unit furnace tubes 1 on both sides is a fixed connection that can rotate synchronously. When the electromagnetic clutch I 2 is de-energized, the connection relationship between the unit furnace tubes 1 on both sides is a rotating connection that can rotate independently. A driving mechanism is provided outside the unit furnace tube 1.

[0047] The unit furnace tube 1 is composed of an outer furnace body 101 and an inner furnace body 102.

[0048] The material of the outer furnace body of the unit furnace tube is ZrB2 composite ceramic material. When the magnetic flux of the alternating magnetic field passes through the furnace body made of ZrB2 composite ceramic material, eddy currents will be generated, and a large amount of heat will be generated in the furnace chamber made of ZrB2 composite ceramic material, and the outer furnace body will heat up; a tubular electromagnetic induction heater is additionally provided outside the unit furnace tube.

[0049] Example Four

[0050] This embodiment is a composite non-metal continuous rotary furnace, which includes a feed bin, a furnace head, a furnace head seal, a furnace tube, a furnace tail seal and a furnace tail. The furnace tube is heated by an internal heating method or an electromagnetic induction external heating method. As Figure 2 shown, the furnace tube includes several unit furnace tubes 1, and an electromagnetic clutch I 2 is connected between two adjacent unit furnace tubes 1. When the electromagnetic clutch I 2 is energized, the connection relationship between the unit furnace tubes 1 on both sides is a fixed connection that can rotate synchronously. When the electromagnetic clutch I 2 is de-energized, the connection relationship between the unit furnace tubes 1 on both sides is a rotating connection that can rotate independently. A driving mechanism is provided outside the unit furnace tube 1.

[0051] The unit furnace tube 1 is composed of an outer furnace body 101 and an inner furnace body 102.

[0052] The material of the inner furnace body of the unit furnace tube is silicon carbide composite ceramic material. The preparation method of the silicon carbide composite ceramic material includes the following steps: the powder obtained by spray granulating the mixed raw material slurry is dry-pressed into a silicon carbide composite ceramic blank, and the blank is sintered at 2050 °C for 3 h in a vacuum atmosphere to obtain a silicon carbide composite ceramic; the mixed raw materials include the following components: 60 wt.% of silicon carbide, 4 wt.% of titanium diboride, 1 wt.% of boron carbide, and the balance is a phenolic resin binder.

[0053] Example Five

[0054] This embodiment is a composite non-metallic continuous rotary furnace, which includes a feed bin, a furnace head, a furnace head seal, a furnace tube, a furnace tail seal and a furnace tail. The furnace tube is heated by an internal heating method or an electromagnetic induction external heating method. As Figure 2 shown, the furnace tube includes a number of unit furnace tubes 1, and an electromagnetic clutch I 2 is connected between two adjacent unit furnace tubes 1. When the electromagnetic clutch I 2 is energized, the connection relationship between the unit furnace tubes 1 on both sides is a fixed connection that can rotate synchronously. When the electromagnetic clutch I 2 is de-energized, the connection relationship between the unit furnace tubes 1 on both sides is a rotating connection that can rotate independently. A driving mechanism is provided outside the unit furnace tube 1.

[0055] The unit furnace tube 1 is composed of an outer furnace body 101 and an inner furnace body 102.

[0056] The material of the inner furnace body of the unit furnace tube is a silicon carbide composite ceramic material. The preparation method of the silicon carbide composite ceramic material includes the following steps: The powder obtained by spray granulating the mixed raw material slurry is dry-pressed to form a silicon carbide composite ceramic green body, and the green body is sintered at 2000 °C for 4 h in a vacuum atmosphere to obtain a silicon carbide composite ceramic; the mixed raw materials include the following components: 50 wt.% of silicon carbide, 5 wt.% of titanium diboride, 0.5 wt.% of boron carbide, and the balance is a phenolic resin binder.

[0057] Example Six

[0058] This embodiment is a composite non-metallic continuous rotary furnace, which includes a feed bin, a furnace head, a furnace head seal, a furnace tube, a furnace tail seal and a furnace tail. The furnace tube is heated by an internal heating method or an electromagnetic induction external heating method. As Figure 2 shown, the furnace tube includes a number of unit furnace tubes 1, and an electromagnetic clutch I 2 is connected between two adjacent unit furnace tubes 1. When the electromagnetic clutch I 2 is energized, the connection relationship between the unit furnace tubes 1 on both sides is a fixed connection that can rotate synchronously. When the electromagnetic clutch I 2 is de-energized, the connection relationship between the unit furnace tubes 1 on both sides is a rotating connection that can rotate independently. A driving mechanism is provided outside the unit furnace tube 1.

[0059] The unit furnace tube 1 is composed of an outer furnace body 101 and an inner furnace body 102.

[0060] The material of the inner furnace body of the unit furnace tube is a silicon carbide composite ceramic material. The preparation method of the silicon carbide composite ceramic material includes the following steps: The powder obtained by spray granulating the mixed raw material slurry is dry-pressed to form a silicon carbide composite ceramic green body, and the green body is sintered at 2100 °C for 2 h in a vacuum atmosphere to obtain a silicon carbide composite ceramic; the mixed raw materials include the following components: 70 wt.% of silicon carbide, 3 wt.% of titanium diboride, 2 wt.% of boron carbide, and the balance is a phenolic resin binder.

[0061] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific embodiments. Obviously, according to the content of this specification, many modifications and variations can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. Composite non-metallic continuous rotary furnace. The rotary furnace includes a feed bin, a furnace head, a furnace head seal, a furnace tube, a furnace tail seal, and a furnace tail. The furnace tube is heated by an internal heating method or an electromagnetic induction external heating method. It is characterized in that: The furnace tube comprises a plurality of unit furnace tubes, and an electromagnetic clutch I is connected between two adjacent unit furnace tubes. A driving mechanism is arranged outside the unit furnace tubes; When the electromagnetic clutch I is energized, the connection relationship between the unit furnace tubes on both sides thereof is a fixed connection capable of synchronous rotation. When the electromagnetic clutch I is de-energized, the connection relationship between the unit furnace tubes on both sides thereof is a rotating connection capable of independent rotation; The unit furnace tube is composed of an outer furnace body and an inner furnace body, and an electromagnetic clutch I is connected between the outer furnace bodies of two adjacent unit furnace tubes.

2. The composite non-metal continuous rotary furnace according to claim 1, wherein: A driven gear ring is installed on the outer wall of the outer furnace body of the unit furnace tube.

3. The composite non-metal continuous rotary furnace according to claim 2, characterized in that: The driving mechanism includes a base, on which a driving motor, a support and a bracket are fixed. An activity channel facilitating the rotation of the unit furnace tube is formed in the support. An electromagnetic clutch II is fixedly installed on the bracket. One end of the electromagnetic clutch II is fixedly connected to the output shaft of the driving motor, and the other end is fixedly connected to one end of a transmission shaft. The transmission shaft extends into the other end of the support and is provided with a transmission gear meshing with the driven gear ring.

4. The composite non-metallic continuous rotary furnace according to claim 3, characterized in that: Guide support rings are symmetrically installed on both sides of the driven gear ring on the outer wall of the outer furnace body of the unit furnace tube. An annular support groove cooperating with the guide support ring is formed in the inner wall of the activity channel. An activity cavity facilitating the movement of the driven gear ring and the transmission gear is formed in the inner wall of the activity channel.

5. The composite non-metallic continuous rotary furnace according to claim 4, wherein: When the electromagnetic clutch II is energized, the connection relationship between the output shaft of the driving motor and the transmission shaft is a fixed connection capable of synchronous rotation. When the electromagnetic clutch II is de-energized, the connection relationship between the output shaft of the driving motor and the transmission shaft is a rotating connection capable of independent rotation.

6. The composite non-metallic continuous rotary furnace according to claim 1, wherein: A plurality of circles of material lifting plate assemblies are installed on the unit furnace tube. The material lifting plate assembly includes a mounting post, which is installed on the unit furnace tube by screwing. The unit furnace tube is provided with a threaded mounting groove penetrating through the outer furnace body and the inner furnace body. A hexagonal groove I is formed inwards at the lower end of the mounting post. A height-adjusting rotating shaft capable of rotating is installed above the hexagonal groove I of the mounting post. A hexagonal groove II communicating with the hexagonal groove I is formed at the lower end of the height-adjusting rotating shaft, and the lower end face of the hexagonal groove II is not lower than the upper end face of the hexagonal groove I. A bevel gear I is fixed to the upper end of the height-adjusting rotating shaft. A mounting shaft is rotatably supported at the top end of the mounting post. A bevel gear II meshing with the bevel gear I is fixed to one end of the mounting shaft. A material lifting plate is fixed to the outside of the mounting shaft.

7. The composite non-metal continuous rotary furnace according to claim 1, wherein: The material of the outer furnace body of the unit furnace tube is ZrB2 composite ceramic material. When the magnetic flux of the alternating magnetic field passes through the furnace body made of ZrB2 composite ceramic material, eddy currents will be generated, and a large amount of heat will be generated in the furnace chamber made of ZrB2 composite ceramic material, and the outer furnace body will generate heat. A tubular electromagnetic induction heater is additionally arranged outside the unit furnace tube.

8. The composite non-metallic continuous rotary furnace according to claim 1, wherein: The inner furnace body material of the unit furnace tube is a silicon carbide composite ceramic material. The preparation method of the silicon carbide composite ceramic material includes the following steps: The powder obtained by spray granulating the mixed raw material slurry is dry-pressed to form a silicon carbide composite ceramic green body, and the green body is sintered at 2000-2100 °C for 2-4 h in a vacuum atmosphere to obtain the silicon carbide composite ceramic; The mixed raw materials include the following components: 50-70 wt.% of silicon carbide, 3-5 wt.% of titanium diboride, 0.5-2 wt.% of boron carbide, and the balance is a phenolic resin binder.

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