CN111133267A - Rotary Kiln for Material Handling - Google Patents
Rotary Kiln for Material Handling Download PDFInfo
- Publication number
- CN111133267A CN111133267A CN201880060463.3A CN201880060463A CN111133267A CN 111133267 A CN111133267 A CN 111133267A CN 201880060463 A CN201880060463 A CN 201880060463A CN 111133267 A CN111133267 A CN 111133267A
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- China
- Prior art keywords
- kiln
- supply pipe
- resin
- material supply
- supplied
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
- F27B7/32—Arrangement of devices for charging
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
- F27B7/38—Arrangements of cooling devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/08—Screw feeders; Screw dischargers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Processing Of Solid Wastes (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
When a material containing resin is supplied into a kiln cylinder rotating while being heated through a material supply pipe, the material is conveyed through the material supply pipe to a position where the temperature in the kiln cylinder is at a temperature at which the resin in the material vaporizes, and the material is supplied into the kiln cylinder from a supply port of the material supply pipe.
Description
Technical Field
The invention relates to a rotary kiln for material treatment, which carries out the following treatment: for example, a material containing a resin such as a plastic in a metal, a metal compound, a carbon material, or the like is supplied into a rotatably supported cylindrical kiln cylinder through a material supply pipe, the kiln cylinder is rotated while being heated, the material supplied into the kiln cylinder is conveyed while being heated, the resin in the material is vaporized and discharged from an exhaust portion and removed, and the metal, the metal compound, the carbon material, or the like is separated and extracted. In particular, the material processing rotary kiln is characterized in that: in the case where the material containing the resin is supplied into the kiln cylinder through the material supply pipe as described above, the kiln cylinder is heated and rotated while being heated, the material is heated while being conveyed in the kiln cylinder, and the resin in the material is vaporized and discharged from the exhaust unit, the resin in the material is prevented from being rapidly vaporized, and the resin in the material adheres to the material supply pipe and the kiln cylinder in a state of a molten viscous body, so that the material is accumulated and clogged in the material supply pipe and the kiln cylinder, and the material can be appropriately supplied into the kiln cylinder through the material supply pipe, and the resin in the material is rapidly vaporized and discharged, thereby appropriately processing the material.
Background
Rotary kilns are currently used for various purposes, for example, for roasting and drying in the metallurgical and ceramic industries, as shown in patent document 1, for drying raw materials having a high water content, as shown in patent document 2, and for treating organic wastes and extracting them as carbides, activators, and ashes, as shown in patent document 3.
In the rotary kiln, in general, a material to be processed is supplied into a rotatably supported cylindrical kiln cylinder through a material supply pipe, the kiln cylinder is rotated, the material supplied into the kiln cylinder is heated by a heating means, the material supplied into the kiln cylinder is conveyed while being heated, and the processed material is cooled and discharged from a discharge section.
Further, at present, various heat treatment furnaces are used to perform the following processes: a material containing a resin such as a metal, a metal compound, or a carbon material is heated to remove the resin contained in the material, thereby obtaining a material such as a metal, a metal compound, or a carbon material from which the resin has been removed.
In addition, the rotary kiln may be used to heat a material containing a resin such as a metal, a metal compound, or a carbon material, and remove the resin contained in the material to obtain a material such as a metal, a metal compound, or a carbon material from which the resin has been removed.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 55-165476
Patent document 2: japanese utility model registration No. 3031902
Patent document 3: japanese patent laid-open publication No. 2004-34003
Disclosure of Invention
Technical problem to be solved by the invention
Here, in the case of using the rotary kiln, a material containing a resin such as a metal, a metal compound, or a carbon material is supplied into a rotatably supported cylindrical kiln cylinder through a material supply pipe, the kiln cylinder is rotated while being heated, the material supplied into the kiln cylinder is conveyed while being heated, and the resin in the material is vaporized and discharged from an exhaust unit, there is a problem in that: the resin in the material is gradually heated and melted in the kiln cylinder, and the melted and viscous resin adheres to and gradually accumulates in the kiln cylinder, so that it becomes difficult to convey the material while heating the material in the kiln cylinder by rotating the kiln cylinder as described above, and further, the resin in the material cannot be vaporized and appropriately removed.
Further, when a material containing a resin is supplied into the cylindrical kiln body through the material supply pipe as described above, it is considered that the time during which the resin contained in the material supplied into the kiln body exists in a viscous molten state can be shortened as much as possible by conveying the material through the material supply pipe to a position in the kiln body where the temperature reaches a temperature at which the resin contained in the material is vaporized, and supplying the material into the kiln body from the supply port of the material supply pipe, and the resin can be rapidly vaporized in the kiln body.
However, when the material containing the resin is introduced into the kiln cylinder through the material supply pipe as described above, the temperature of the material reaches a position at which the resin contained in the material is vaporized, there is a problem in that: in the course of introducing the material containing the resin into the material supply pipe at the position inside the kiln barrel heated as described above, the resin contained in the material is gradually melted in the material supply pipe, and the resin melted as described above and having viscosity is attached to and gradually accumulated in the material supply pipe, so that the material cannot be introduced into the position where the temperature of the kiln barrel reaches the temperature at which the resin is vaporized through the material supply pipe.
The technical problem of the present invention is to solve various technical problems using a rotary kiln: a material containing a resin such as a metal, a metal compound, or a carbon material is supplied through a material supply pipe into a rotatably supported cylindrical kiln cylinder, the kiln cylinder is rotated while being heated, the material supplied into the kiln cylinder is conveyed while being heated, and the resin contained in the material is vaporized and discharged from an exhaust unit to be processed.
That is, the technical problem of the present invention is: in the case where the material containing the resin is supplied into the kiln cylinder through the material supply pipe as described above, the kiln cylinder is heated while being heated, the material is conveyed and heated in the kiln cylinder, and the resin contained in the material is vaporized and discharged from the exhaust portion to be processed, the resin contained in the material is prevented from adhering to and accumulating in the material supply pipe and the kiln cylinder in a state of a molten viscous body, the material is appropriately supplied into the kiln cylinder through the material supply pipe, the resin in the material is rapidly vaporized in the kiln cylinder and discharged from the exhaust portion, and the processing of separating and extracting the metal, the metal compound, the carbon material, and the like from the material can be appropriately performed.
Technical scheme for solving technical problem
In the rotary kiln for material treatment of the present invention, in order to solve the technical problems as described above,
a material containing a resin is supplied into a rotatably supported cylindrical kiln cylinder through a material supply pipe, the kiln cylinder is rotated while being heated, the material supplied into the kiln cylinder is conveyed while being heated, and the resin in the material is vaporized and discharged from an exhaust part for treatment,
the material is supplied into the kiln barrel from a supply port of the material supply pipe through a position in the material supply pipe where the temperature at which the material is conveyed into the kiln barrel is a temperature at which a resin contained in the material vaporizes, and the material-processing rotary kiln is provided with a cooling unit that prevents the temperature in the material supply pipe from being heated to a temperature at which the resin contained in the material melts, and a heat insulation unit that insulates the outer peripheries of the material supply pipe and the cooling unit.
Here, as in the material processing rotary kiln of the present invention, if the cooling means is provided to prevent the temperature in the material supply pipe from being heated to the temperature at which the resin contained in the material is melted, the resin contained in the material is prevented from adhering to and accumulating in the material supply pipe in a state of a molten viscous body while the material is guided through the material supply pipe to a position at which the temperature in the kiln cylinder is at the temperature at which the resin contained in the material is vaporized, and the material is guided through the material supply pipe to a position at which the temperature in the kiln cylinder is heated to the temperature at which the resin contained in the material is vaporized. Further, when the resin contained in the material is supplied into the kiln body from the supply port of the material supply pipe at a position where the temperature in the kiln body is heated to a temperature at which the resin contained in the material is vaporized as described above, the resin contained in the material supplied into the kiln body is not deposited and accumulated in the kiln body in a state of a molten viscous body, and is rapidly vaporized and discharged from the exhaust portion.
Further, if the heat insulating means for insulating the outer peripheral portions of the material supply pipe and the cooling means is provided as in the material processing rotary kiln of the present invention, the gas of the resin in the material vaporized in the kiln cylinder (the vaporized resin component) is prevented from directly contacting the outer peripheral portions of the material supply pipe and the cooling means and from being cooled, and the vaporized resin is prevented from solidifying at the outer peripheral portions of the material supply pipe and the cooling means and from adhering to the outer peripheral portions of the material supply pipe and the cooling means.
In the rotary kiln for material treatment according to the present invention, when the material supplied into the material supply pipe is conveyed and guided into the kiln cylinder, the conveying screw is provided in the material supply pipe, and the material supplied into the material supply pipe can be conveyed by rotating the conveying screw.
In the rotary kiln for material treatment according to the present invention, the cooling unit may be a cooling pipe having a coolant passage provided along the material supply pipe on an outer peripheral side of the material supply pipe, and the coolant may be passed through the coolant passage of the cooling pipe to cool the inside of the material supply pipe. In this way, it is possible to easily prevent the temperature in the material supply pipe from being heated to a temperature at which the resin contained in the material is melted.
In the case where a cooling pipe having a refrigerant passage is provided along the material supply pipe on the outer peripheral side of the material supply pipe as the cooling unit, a cylindrical heat insulating member may be provided along the cooling pipe on the outer peripheral side of the cooling pipe as the heat insulating unit. Further, if the cylindrical heat insulating member is provided along the cooling pipe on the outer peripheral side of the cooling pipe as described above, the gas of the resin contained in the material vaporized in the kiln body is prevented from contacting the outer peripheral portion of the cooling pipe and being cooled, and the gas of the resin does not solidify and adheres to the outer peripheral portion of the cooling pipe, and the gas of the vaporized resin is appropriately discharged from the exhaust portion.
In the material treatment rotary kiln according to the present invention, it is preferable that a radiation cover is provided downstream of a supply port through which the material is supplied from the material supply pipe into the kiln body in the material transport direction, the radiation cover suppressing heat in the kiln body from being guided into the material supply pipe through the supply port. In this way, the heat in the kiln body heated to the temperature at which the resin contained in the material vaporizes is suppressed from being introduced into the material supply pipe through the supply port, and the resin in the material is prevented from melting and adhering to the material supply pipe in a viscous state while being introduced into the supply port of the material supply pipe. Here, when the radiation cover is provided, the radiation cover can be a metal plate, and the radiation cover can be held by a stay provided from the heat insulating member toward the downstream side in the material conveying direction.
In the material treatment rotary kiln according to the present invention, it is preferable that the exhaust unit is provided on a supply side for supplying the material into the kiln cylinder when a gas generated by vaporizing the resin in the material is exhausted from the exhaust unit. In this way, when the material in which the resin is vaporized is conveyed in the kiln barrel and is led out from the lead-out port, the gas of the resin vaporized from the material is led to the lead-out port together with the processed material, and the gas of the resin vaporized is prevented from contacting the processed material and being solidified, and the resin does not adhere to the processed material again.
Effects of the invention
In the rotary kiln for material treatment of the present invention, when the material containing the resin is introduced into the kiln cylinder through the material supply pipe as described above and the temperature is heated to a position at which the resin contained in the material is vaporized, since the cooling means for preventing the temperature in the material supply pipe from being heated to a temperature at which the resin contained in the material is melted is provided, therefore, on the way of the position where the temperature for guiding the material into the kiln cylinder through the material supply pipe is heated to the temperature for vaporizing the resin contained in the material, the resin in the material is prevented from adhering to the material supply pipe in a molten viscous state and accumulating in the material supply pipe, the material is suitably guided through the material feed tube to a location where the temperature within the kiln barrel is heated to a temperature at which the resin contained by the material vaporizes. Further, as described above, the material is guided to the position where the temperature in the kiln cylinder is heated to the temperature at which the resin contained in the material is vaporized, and the material is supplied from the supply port of the material supply pipe into the kiln cylinder, and the resin in the material is rapidly vaporized in the kiln cylinder and discharged from the exhaust portion, and the resin in the material does not adhere to and accumulate in the kiln cylinder in the state of a molten viscous body, and the material is not difficult to convey, and the treatment of separating and extracting the metal, the metal compound, the carbon material, and the like from the material can be appropriately performed.
Further, in the rotary kiln for material treatment according to the present invention, since the heat insulating means for insulating the outer peripheral portions of the material supply pipe and the cooling means is provided as described above, the gas of the resin in the material vaporized in the kiln cylinder is prevented from directly contacting the outer peripheral portions of the material supply pipe and the cooling means and cooling the material, and the vaporized resin is prevented from solidifying on the outer peripheral portions of the material supply pipe and the cooling means and adhering to the outer peripheral portions of the material supply pipe and the cooling means.
Drawings
Fig. 1 is a schematic cross-sectional explanatory view showing the following state: in the material processing rotary kiln according to the embodiment of the present invention, a material containing a resin is supplied into a kiln cylinder through a material supply pipe, the kiln cylinder is rotated while being heated, the resin contained in the material supplied into the kiln cylinder is vaporized and conveyed in the kiln cylinder, the gas of the vaporized resin is discharged from an exhaust part, and the material after the vaporization of the resin is discharged from a discharge part.
Fig. 2 is a partially enlarged schematic cross-sectional explanatory view showing the following state: in the material processing rotary kiln of the embodiment, the material is supplied into the kiln barrel through the material supply pipe at a position where the temperature at which the material is guided into the kiln barrel is heated to a temperature at which the resin contained in the material is vaporized.
Fig. 3 is a partially enlarged schematic explanatory view showing the following states: in the rotary kiln for material treatment of the above embodiment, the bottom of the kiln tube is rotatably supported from both sides by the paired support rollers, and the radiation hood is provided on the downstream side in the material conveying direction from the supply port of the material supply pipe.
Detailed Description
Hereinafter, a material processing rotary kiln according to an embodiment of the present invention will be specifically described with reference to the drawings. The material treatment rotary kiln of the present invention is not limited to the following embodiments, and can be implemented by appropriately changing the material treatment rotary kiln within a range not changing the gist of the present invention.
In the rotary kiln for material treatment of the present embodiment, as shown in fig. 1 and 2, a material W containing a resin is supplied from a material guide 11 into a material supply pipe 12. Then, the material supply pipe 12 is inserted into a cylindrical kiln barrel 20 that rotates while being heated, the material W supplied into the material supply pipe 12 is guided through the material supply pipe 12 to a position in the kiln barrel 20 where the temperature of the resin contained in the material W is vaporized, and the material W is supplied from a supply port 12a on the downstream side in the conveying direction of the material supply pipe 12 to the heated position in the kiln barrel 20. In this embodiment, when the material supply pipe 12 is inserted into the kiln tube body 20, the material supply pipe 12 is provided at a position lower than the center in the kiln tube body 20, and the material W is supplied by dropping the material W from the supply port 12a of the material supply pipe 12 into the kiln tube body 20, the supplied material W is prevented from splashing in the kiln tube body 20.
Here, in this embodiment, as described above, the material W containing the resin is supplied from the supply port 12a of the material supply pipe 12 to the position in the kiln barrel 20 at the temperature at which the resin contained in the material W is vaporized, so that the resin contained in the material W is vaporized before the resin contained in the material W is melted and adheres to the inside of the kiln barrel 20 in a viscous state. Therefore, the resin contained in the material W supplied from the supply port 12a of the material supply pipe 12 into the kiln cylinder 20 is appropriately conveyed without being adhered to and accumulated in the kiln cylinder 20 in a state of a molten viscous body and without being clogged in the kiln cylinder 20.
Then, the resin is vaporized as described above to convey the material W while being heated in the kiln barrel 20, and then the material W is cooled by passing through the unheated cooling portion C of the kiln barrel 20, guided to the lead-out portion 30, and the material W treated as described above is led out from the lead-out port 31 of the lead-out portion 30.
Further, the lead-out portion 30 is provided with a carrier gas supply port 32 for supplying a carrier gas such as nitrogen, the carrier gas is introduced into the kiln tube 20 from the carrier gas supply port 32, the resin gas vaporized in the kiln tube 20 as described above is guided into the exhaust portion 40 provided on the material supply side through the kiln tube 20 together with the carrier gas, and the exhaust gas including the resin gas and the carrier gas is discharged through the exhaust passage 41 provided in the exhaust portion 40.
Here, in this embodiment, when the material W containing the resin is conveyed through the material supply pipe 12 and supplied into the kiln cylinder 20 as described above, the conveying screw 13 is provided in the material supply pipe 12, the conveying screw 13 is rotated by the motor 14, the material W supplied into the material supply pipe 12 is conveyed by the conveying screw 13 and guided to the supply port 12a, and the material W is supplied from the supply port 12a into the kiln cylinder 20 at a position at which the temperature thereof is a temperature at which the resin contained in the material W is vaporized. In this embodiment, when the resin-containing material W is conveyed through the material supply pipe 12 and supplied into the kiln cylinder 20 as described above, an appropriate amount of the material W is conveyed through the rotary conveyance screw 13 in the material supply pipe 12 and supplied into the kiln cylinder 20, but the conveyance screw 13 may not be particularly provided as long as the appropriate amount of the material W can be conveyed through the material supply pipe 12 and supplied into the kiln cylinder 20, and for example, the material supply pipe 12 may be inclined at an appropriate angle to slide down the material W.
Further, when the material W containing the resin is conveyed through the material supply pipe 12 to the position where the temperature in the kiln barrel 20 is the temperature at which the resin contained in the material W is vaporized as described above, the cooling unit 15 for cooling the material supply pipe 12 is provided in order to prevent the resin having viscosity after being melted from adhering to the inside of the material supply pipe 12 by being heated to the temperature at which the resin contained in the material W is melted in the material supply pipe 12. In this embodiment, a cooling pipe 15a having a double pipe structure through which a refrigerant passes is provided as the cooling unit 15 on the outer peripheral side of the material supply pipe 12 along the material supply pipe 12, the refrigerant such as water or cold air is supplied from a refrigerant introduction portion 15b into the cooling pipe 15a, the material supply pipe 12 is cooled by the refrigerant flowing in the cooling pipe 15a, the temperature inside the material supply pipe 12 is prevented from being heated to a temperature at which the resin contained in the material W melts, and then the refrigerant cooled by the inside of the cooling pipe 15a in this manner is led out from a refrigerant lead-out portion 15 c.
In this embodiment, a cylindrical heat insulating member 16 made of a heat insulating material is provided along the cooling pipe 15a on the outer peripheral side of the cooling pipe 15a as a heat insulating means 16 for heat insulating the material supply pipe 12 and the outer peripheral portion of the cooling pipe 15 a. In this way, when the coolant is passed through the cooling pipe 15a provided on the outer peripheral side of the material supply pipe 12 as described above to cool the material supply pipe 12, the gas of the resin vaporized from the material W supplied into the kiln cylinder 20 as described above is prevented from directly contacting the outer peripheral portion of the cooling pipe 15a to cool the same, and the vaporized resin is prevented from solidifying and adhering to the outer peripheral portion of the cooling pipe 15 a. Further, the cooling pipe 15a is heated by the heat in the kiln barrel 20, and thus the cooling efficiency can be prevented from being lowered.
Further, when the material W is supplied from the supply port 12a of the material supply pipe 12 into the kiln cylinder 20 at a temperature at which the resin is vaporized as described above, the heat in the kiln cylinder 20 is guided into the material supply pipe 12 through the supply port 12a, and the resin contained in the material W in the material supply pipe 12 near the supply port 12a may be melted and adhere to the material supply pipe 12 in a viscous state.
Therefore, in this embodiment, as shown in fig. 1 to 3, a radiation cover 17 made of a metal plate having a diameter larger than that of the supply port 12a is held by a plurality of support columns 18 provided from the front end portion of the cylindrical heat insulating member 16 toward the downstream side in the material conveying direction at a position on the downstream side in the material conveying direction from the supply port 12a of the material supply pipe 12, so that the heat in the kiln cylinder 20 is prevented from being guided into the material supply pipe 12 through the supply port 12a, and the heat in the kiln cylinder 20 is prevented from being guided into the material supply pipe 12 through the supply port 12a by the radiation cover 17.
Further, since the pillars 18 of the radiation cover 17 are attached to the heat insulating member 16, the radiation cover 17 is cooled by the cooling pipe 15a, and the resin gas does not adhere to the radiation cover 17 as a viscous body.
In the material processing rotary kiln of this embodiment, when the kiln cylinder 20 is rotated as described above, as shown in fig. 1 to 3, a pair of support rollers 21, 21 for rotatably supporting the bottom of the kiln cylinder 20 from both sides are provided at positions on the supply side where the material supply pipe 12 is provided and on the discharge side where the discharge portion 30 is provided, and a rotating device 22 for rotating the kiln cylinder 20 in the circumferential direction by a rotating motor 22a is provided at a part on the discharge side of the kiln cylinder 20. The rotating device 22 may have any configuration such as rotating a chain (not shown) wound around the outer periphery of the kiln tube 20 by a rotating motor 22 a.
In addition, when the rotary kiln cylinder 20 is heated as described above, in this embodiment, a cylindrical heat-insulating furnace wall 50 made of a heat-insulating material is provided between the support rollers 21, 21 rotatably supporting the supply side and the discharge side of the kiln cylinder 20, so as to form a space S having a desired interval with the outer periphery of the kiln cylinder 20 on the outer peripheral side of the kiln cylinder 20, and a heating device 51 such as a heater for heating the kiln cylinder 20 is provided on the inner peripheral side of the heat-insulating furnace wall 50 so as to face the outer periphery of the kiln cylinder 20. In the present embodiment, when the kiln cylinder 20 is heated, the heating device 51 such as a heater is provided on the inner circumferential side of the heat-insulating furnace wall 50, but the kiln cylinder 20 may be heated by introducing hot air into the space S between the heat-insulating furnace wall 50 and the outer circumference of the kiln cylinder 20.
Here, in this embodiment, in order to suppress the heat of the space S heated by the heating device 51 from leaking to the outside from between the heat-insulating furnace wall 50 and the kiln cylinder 20, holding portions 52 for closing the gap between the heat-insulating furnace wall 50 and the kiln cylinder 20 and rotatably holding the kiln cylinder 20 are provided at both axial end portions of the heat-insulating furnace wall 50 toward the kiln cylinder 20, respectively, a heat-insulating material 23 having a desired width is provided on the outer periphery of the kiln cylinder 20 at a position facing the holding portions 52, and an elastic seal 53 for rotatably closing the space between the holding portions 52 of the heat-insulating furnace wall 50 and the heat-insulating material 23 of the kiln cylinder 20 is provided.
In the rotary kiln for material treatment according to this embodiment, in order to suppress leakage of gas and heat from the portions of the kiln cylinder 20 connected to the lead-out portion 30 and the exhaust portion 40, the heat insulating material 24 having a desired width is provided at the outer peripheral end portion of the kiln cylinder 20 on the lead-out portion side to which the lead-out portion 30 is connected, the elastic sealing member 33 for rotatably sealing the space between the heat insulating material 24 of the kiln cylinder 20 is provided at the lead-out portion 30, the heat insulating material 25 having a desired width is provided at the outer peripheral end portion of the kiln cylinder 20 on the exhaust portion side to which the exhaust portion 40 is connected, and the elastic sealing member 42 for rotatably sealing the space between the heat insulating material 25 of the kiln cylinder 20 is provided at the exhaust portion 40.
Here, since the elastic seals 33, 42, and 53 lose elasticity and sealing property when they reach a high temperature, the elastic seals 33, 42, and 53 are protected by the heat insulators 23, 24, and 25 so as not to directly contact the surface of the kiln barrel 20 that is at a high temperature.
The section a provided with the heat insulator 23 functions as a "heat insulating belt" to reduce a temperature change from the high-temperature space S of the kiln barrel 20 itself to the low-temperature cooling portion C, so that the kiln barrel 20 itself is not deformed by a rapid temperature change.
In the present invention, as described above, it is possible to provide a rotary kiln that can reduce the chance that the resin contained in the material W is present in a viscous state as much as possible, and that the resin does not adhere to and accumulate in the kiln tube 20 and the material supply pipe 12.
Description of the symbols
11: a material guide;
12: a material supply tube;
12a supply port;
13: carrying the screw rod;
14: a motor;
15: a cooling unit;
15 a: a cooling tube;
15 b: a refrigerant introduction part;
15 c: a refrigerant lead-out section;
16: a heat insulating unit (heat insulating member);
17: a radiation shield;
18: a pillar;
20: a kiln cylinder body;
21: a support roller;
22: a rotating device;
22 a: a rotary motor;
23: an insulating member;
24: an insulating member;
25: an insulating member;
30: a lead-out section;
31: a lead-out port;
32: a carrier gas supply port;
33: an elastomeric seal;
40: an exhaust section;
41: an exhaust passage;
42: an elastomeric seal;
50: a thermally insulated furnace wall;
51: a heating device;
52: a holding section;
53: an elastomeric seal;
a: segment (insulation band);
c: a cooling section;
s: a space section;
w: a material.
Claims (7)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-241930 | 2017-12-18 | ||
| JP2017241930A JP6710475B2 (en) | 2017-12-18 | 2017-12-18 | Rotary kiln for material processing |
| PCT/JP2018/033574 WO2019123733A1 (en) | 2017-12-18 | 2018-09-11 | Rotary kiln for material processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111133267A true CN111133267A (en) | 2020-05-08 |
| CN111133267B CN111133267B (en) | 2022-02-11 |
Family
ID=66993324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880060463.3A Active CN111133267B (en) | 2017-12-18 | 2018-09-11 | Rotary Kiln for Material Handling |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6710475B2 (en) |
| CN (1) | CN111133267B (en) |
| WO (1) | WO2019123733A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678312A (en) * | 2020-06-06 | 2020-09-18 | 陈怀圣 | Anti-bonding scattering type rotary kiln for producing vanadium oxide |
| KR20230170253A (en) * | 2022-06-10 | 2023-12-19 | 주식회사 엘지화학 | Electrode material firing system |
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| JP2001050670A (en) * | 1999-08-05 | 2001-02-23 | Osaka Gas Engineering Co Ltd | Rotary melting furnace |
| JP3564012B2 (en) * | 1999-09-22 | 2004-09-08 | 株式会社木暮製作所 | Rotary kiln |
| JP3819798B2 (en) * | 2002-04-01 | 2006-09-13 | 株式会社オットー | Horizontal rotary furnace equipment |
| CN102510988A (en) * | 2009-10-29 | 2012-06-20 | 月岛机械株式会社 | Rotary heat treatment apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5430855Y2 (en) * | 1974-02-28 | 1979-09-27 | ||
| JP3926029B2 (en) * | 1998-04-22 | 2007-06-06 | 太平洋セメント株式会社 | Feeding equipment for rotary kiln |
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2017
- 2017-12-18 JP JP2017241930A patent/JP6710475B2/en active Active
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2018
- 2018-09-11 CN CN201880060463.3A patent/CN111133267B/en active Active
- 2018-09-11 WO PCT/JP2018/033574 patent/WO2019123733A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001050670A (en) * | 1999-08-05 | 2001-02-23 | Osaka Gas Engineering Co Ltd | Rotary melting furnace |
| JP3564012B2 (en) * | 1999-09-22 | 2004-09-08 | 株式会社木暮製作所 | Rotary kiln |
| JP3819798B2 (en) * | 2002-04-01 | 2006-09-13 | 株式会社オットー | Horizontal rotary furnace equipment |
| CN102510988A (en) * | 2009-10-29 | 2012-06-20 | 月岛机械株式会社 | Rotary heat treatment apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019109010A (en) | 2019-07-04 |
| CN111133267B (en) | 2022-02-11 |
| WO2019123733A1 (en) | 2019-06-27 |
| JP6710475B2 (en) | 2020-06-17 |
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