CN110125430B - Large rotary furnace for tungsten powder reduction - Google Patents
Large rotary furnace for tungsten powder reduction Download PDFInfo
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- CN110125430B CN110125430B CN201910557716.4A CN201910557716A CN110125430B CN 110125430 B CN110125430 B CN 110125430B CN 201910557716 A CN201910557716 A CN 201910557716A CN 110125430 B CN110125430 B CN 110125430B
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- reaction container
- communicated
- sealing
- pipe
- sealing cylinder
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 93
- 238000007789 sealing Methods 0.000 claims abstract description 70
- 238000010438 heat treatment Methods 0.000 claims abstract description 38
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 238000007599 discharging Methods 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 239000000428 dust Substances 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000002994 raw material Substances 0.000 abstract description 8
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 35
- 238000006722 reduction reaction Methods 0.000 description 25
- 239000000463 material Substances 0.000 description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
- B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
Abstract
The invention provides a large rotary furnace for tungsten powder reduction, which comprises a heating device and a cooling device, wherein a reaction container is rotatably arranged between the heating device and the cooling device in a penetrating way, two ends of the reaction container are respectively penetrated through the heating device and the cooling device, one side of the end part of the reaction container, which is close to the heating device, is provided with a feeding device, the discharging end of the feeding device is communicated with the feeding end of the reaction container, the outer side of the joint of the feeding device and the reaction container is sleeved with a sealing device, the sealing device is communicated with a tail gas treatment device through a pipeline, the outer side of the other port of the reaction container is sleeved with a sealing cylinder, the sealing cylinder is in movable sealing fit with the reaction container, the bottom of the sealing cylinder is communicated with a discharging device, and the end part, which is far away from the reaction container, of the sealing cylinder is communicated with a gas supply device; the automatic feeding device can realize automatic feeding, stir raw materials, enable the raw materials to react under the same reduction condition, improve the product quality, provide sealing protection in the whole production process, and provide stable reduction atmosphere.
Description
Technical Field
The invention relates to the field of tungsten powder reduction equipment, in particular to a large rotary furnace for tungsten powder reduction.
Background
Tungsten is rare high-melting-point metal, can improve the high-temperature hardness of steel, has very wide application, relates to the fields of mines, metallurgy, machinery, architecture, traffic, electronics, chemical industry, light industry, textile industry, military industry, aerospace industry, science and technology, and each industry, and mainly depends on reduction equipment and reduction technology, most of the existing reduction equipment adopts a reduction furnace structure, can only adopt a boat-burning stepping production mode, cannot realize full automatic feeding, and the production mode is poor in product consistency because tungsten powder is placed in a boat, and tungsten oxide powder with different thicknesses is different in granularity due to different material layer thicknesses and atmospheres in the furnace tubes; and the existing equipment still has room for improvement in terms of sealing protection in the production process.
Disclosure of Invention
In order to overcome the defects of the prior art, the technical problem to be solved by the invention is to provide a large rotary furnace for tungsten powder reduction, which has novel structure, can realize automatic feeding, agitate raw materials, enable the raw materials to react under the same reduction condition, improve the product quality, and provide sealing protection in the whole production process and stable reduction atmosphere.
To achieve the purpose, the invention adopts the following technical scheme:
the invention provides a large rotary furnace for tungsten powder reduction, which comprises a frame, a heating device and a cooling device, wherein the heating device and the cooling device are arranged on the frame, a reaction container is rotatably arranged between the heating device and the cooling device in a penetrating manner, the reaction container is of a tubular structure and is driven to rotate around an axis by a first motor, two ends of the reaction container respectively penetrate through the heating device and the cooling device, one side of the reaction container, which is close to the end of the heating device, is provided with a feeding device, the discharge end of the feeding device is communicated with the feed end of the reaction container, the outer side of the joint of the feeding device and the reaction container is sleeved with a sealing device, the sealing device is communicated with an exhaust gas treatment device through a pipeline, the outer side of the other port of the reaction container is sleeved with a sealing cylinder, the sealing cylinder is in movable sealing fit with the reaction container, the bottom of the sealing cylinder is communicated with a discharging device, and the end of the sealing cylinder, which is far away from the reaction container, is communicated with an air supply device.
In a preferred technical scheme of the invention, the heating device comprises a plurality of first pipe bodies which are spliced in sequence, each first pipe body is arranged on the frame, the axes of the plurality of first pipe bodies are coincident, the inner wall of each first pipe body is matched with the shape of the outer wall of the reaction container and is in sliding supporting, the inner wall of each first pipe body is provided with a first clamping cavity, a gas pipe communicated with the steam boiler is arranged above the heating device, each first clamping cavity is communicated with the gas pipe through a pipeline, the bottom of the heating device is provided with a water collecting pipe, and the bottom of each first clamping cavity is communicated with the water collecting pipe through a pipeline.
In a preferred technical scheme of the invention, the cooling device comprises a second pipe body and a second clamping cavity arranged on the inner wall of the second pipe body, wherein the second pipe body is fixedly arranged on the rack, and the inner wall of the second pipe body is matched with the outer wall of the reaction container in shape and is in sliding abutting connection; the bottom of the second clamping cavity is communicated with an external water supply pipe, and the top of the side wall of the second clamping cavity is communicated with a drain pipe.
In the preferred technical scheme of the invention, two ends of the reaction vessel are arranged on the rack through a bracket, and the reaction vessel traverses the heating device and the cooling device after being rotatably supported by the bracket; the reaction vessel outer wall between the heating device and the cooling device is fixedly provided with a first sprocket, the first motor is fixedly installed on the frame, an output shaft of the first motor is provided with a second sprocket, and the second sprocket and the first sprocket are connected through chain transmission.
In the preferred technical scheme of the invention, a baffle block is arranged at a port of the reaction vessel close to one end of the feeding device, a bearing is sleeved outside the baffle block, and the outer wall of the bearing is matched with the inner wall of the reaction vessel; the feeding device comprises a charging basket and a basket cover, the basket cover is arranged at the top of the charging basket, a conveying pipe is arranged at the bottom of the charging basket in a transverse mode, a feed inlet is formed in the top of the conveying pipe, the other end of the conveying pipe extends towards the direction of the reaction container and penetrates through the material blocking block to extend into the reaction container, a spiral stirring rod is arranged in the conveying pipe, and the spiral stirring rod is driven by a second motor.
In a preferred technical scheme of the invention, the sealing device comprises a shell, wherein one end of the shell is sleeved at the end part of the reaction container and is movably connected through a sealing bearing; the other end of the shell is fixedly connected with the charging basket, and the conveying pipe penetrates through the shell; the bottom of the shell is provided with an exhaust port, and the exhaust port is communicated with the tail gas treatment device through a pipeline.
In the preferred technical scheme of the invention, the tail gas treatment device comprises a cyclone dust collector, a cloth bag dust collector and a pulse dust collector which are sequentially communicated, and a gas outlet of the pulse dust collector is communicated with a tail gas collecting tank through a pipeline.
In the preferred technical scheme of the invention, the sealing cylinder is of a cylindrical structure, and one end of the sealing cylinder is sleeved at the end part of the reaction container and is movably connected through a sealing bearing; the other end of the sealing cylinder is communicated with the air supply device, and the feeding port of the discharging device is communicated with the bottom of the sealing cylinder.
In the preferred technical scheme of the invention, the air supply device comprises a tank body for gas transfer, an air outlet of the tank body is communicated with the sealing cylinder through a pipeline, and a plurality of air pipes communicated with an external air storage tank are communicated with the side wall of the tank body.
In the preferred technical scheme of the invention, the discharging device comprises a collecting barrel, the top of the collecting barrel is communicated with the bottom of the sealing barrel, and a switching valve is arranged at the discharging opening of the collecting barrel.
The beneficial effects of the invention are as follows:
the large rotary furnace for tungsten powder reduction provided by the invention has a novel structure, and realizes automatic reduction production of tungsten powder under the mutual cooperation of a reaction container, a heating device, a cooling device, a feeding device, a discharging device, a gas supply device, a sealing device and a tail gas treatment device; the arrangement of the feeding device can realize automatic feeding, change the traditional manual feeding mode for the boat, and improve the production efficiency; the reaction container is driven by the first motor to rotate, so that the raw materials are stirred in a rolling way, the raw materials are reacted under the same reduction condition, and the product quality is improved; the sealing device and the sealing cylinder are arranged to seal the rotating reaction container, so that the whole production process is protected in a sealing way, and stable reducing atmosphere is provided; the tail gas treatment device can filter and recycle the tail gas after reaction, so that the waste is reduced, and the cost is reduced.
Drawings
FIG. 1 is a schematic view of a large rotary kiln for reduction of tungsten powder according to an embodiment of the present invention;
FIG. 2 is a schematic view of a heating apparatus provided in an embodiment of the present invention;
FIG. 3 is a schematic view of a cooling device provided in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a feeding device and a sealing device according to an embodiment of the present invention.
In the figure:
100. a heating device; 110. a first tube body; 120. a first clamping cavity; 130. a gas pipe; 140. a water collecting pipe; 200. a cooling device; 210. a second tube body; 220. a second clamping cavity; 300. a reaction vessel; 310. a first motor; 320. a material blocking block; 400. a feeding device; 410. a charging barrel; 420. a barrel cover; 430. a material conveying pipe; 440. a spiral stirring rod; 450. a second motor; 500. a sealing device; 510. a housing; 520. an exhaust port; 600. a tail gas treatment device; 610. a cyclone dust collector; 620. a bag-type dust collector; 630. a pulse dust collector; 700. a sealing cylinder; 800. a blanking device; 810. a collecting barrel; 820. a switch valve; 900. a gas supply device; 910. a tank body.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1, a large rotary furnace for tungsten powder reduction is disclosed in the embodiment of the present invention, which comprises a frame, a heating device 100 and a cooling device 200 disposed on the frame, a reaction vessel 300 rotatably passing through the heating device 100 and the cooling device 200, wherein the reaction vessel 300 has a tubular structure and is driven by a first motor 310 to rotate around an axis, two ends of the reaction vessel 300 respectively penetrate through the heating device 100 and the cooling device 200, a feeding device 400 is disposed on one side of an end portion of the reaction vessel 300, which is close to the heating device 100, a discharging end of the feeding device 400 is communicated with a feeding end of the reaction vessel 300, a sealing device 500 is disposed on an outer side of a joint between the feeding device 400 and the reaction vessel 300, the sealing device 500 is communicated with a tail gas treatment device 600 through a pipeline, a sealing cylinder 700 is disposed on an outer side of another port of the reaction vessel 300, the sealing cylinder 700 is movably and hermetically matched with the reaction vessel 300, a discharging device 800 is disposed on a bottom communication side of the sealing cylinder 700, and the sealing cylinder 700 is far from the end portion of the reaction vessel 300.
The large rotary furnace for tungsten powder reduction has novel structure, and realizes automatic reduction production of tungsten powder under the mutual coordination of the reaction vessel 300, the heating device 100, the cooling device 200, the feeding device 400, the discharging device 800, the air supply device 900, the sealing device 500 and the tail gas treatment device 600; the feeding device 400 is arranged, so that automatic feeding can be realized, a traditional manual boat feeding mode is changed, and the production efficiency is improved; the reaction vessel 300 is driven by the first motor 310 to rotate, so that the raw materials are stirred in a rolling way, the raw materials are reacted under the same reduction condition, and the product quality is improved; the sealing device 500 and the sealing cylinder 700 are arranged to movably seal the rotating reaction container 300, so that the whole production process is protected in a sealing way, and stable reducing atmosphere is provided; the tail gas treatment device 600 can filter and recycle the tail gas after reaction, thereby reducing waste and lowering cost.
Further, as shown in fig. 2, the heating device 100 includes a plurality of first tubes 110 that are spliced in sequence, each first tube 110 is mounted on the rack, axes of the plurality of first tubes 110 are coincident, an inner wall of each first tube 110 is adapted to a shape of an outer wall of the reaction vessel 300 and is in sliding abutment, a first clamping cavity 120 is disposed on an inner wall of each first tube 110, a gas pipe 130 that is communicated with a steam boiler is erected above the heating device 100, each first clamping cavity 120 is communicated with the gas pipe 130 through a pipeline, a water collecting pipe 140 is disposed at a bottom of the heating device 100, and a bottom of each first clamping cavity 120 is communicated with the water collecting pipe 140 through a pipeline; the heating device 100 is formed by splicing a plurality of first tube bodies 110, and can be conveniently increased or decreased according to the length of the reaction vessel 300 so as to provide proper heating conditions; the water collecting pipe 140 is provided to collect the water after condensing the steam.
Further, as shown in fig. 3, the cooling device 200 includes a second pipe body 210 and a second clamping cavity 220 disposed on an inner wall of the second pipe body 210, the second pipe body 210 is fixedly mounted on the rack, and the inner wall of the second pipe body 210 is adapted to the outer wall of the reaction vessel 300 in shape and is slidably supported; the bottom of the second clamping cavity 220 is communicated with an external water supply pipe, and the top of the side wall of the second clamping cavity 220 is communicated with a drain pipe; the structural design can ensure that the reduced substances are cooled, so that the subsequent collection and transportation are convenient; and the drain pipe extends to the water tank or the water pool, and the cooling water circulation is formed by the water suction pump, so that the water consumption is reduced.
Further, both ends of the reaction vessel 300 are mounted on the frame through brackets, and the reaction vessel 300 is rotatably supported by the brackets and then traverses the heating device 100 and the cooling device 200; the outer wall of the reaction vessel 300 between the heating device 100 and the cooling device 200 is fixedly provided with a first sprocket, the first motor 310 is fixedly installed on the frame, an output shaft of the first motor 310 is provided with a second sprocket, and the second sprocket and the first sprocket are connected through chain transmission.
Further, as shown in fig. 4, a baffle block 320 is disposed at a port of the reaction vessel 300 near one end of the feeding device 400, a bearing is sleeved on the outer side of the baffle block 320, and the outer wall of the bearing is adapted to the inner wall of the reaction vessel 300; the feeding device 400 comprises a charging basket 410 and a barrel cover 420 covered on the top of the charging basket 410, a transversely arranged material conveying pipe 430 is arranged at the bottom of the charging basket 410, a feeding hole is arranged at the top of the material conveying pipe 430 in the charging basket 410, the other end of the material conveying pipe 430 extends towards the direction of the reaction container 300 and penetrates through the material blocking block 320 to extend into the reaction container 300, a spiral stirring rod 440 is arranged in the material conveying pipe 430, and the spiral stirring rod 440 is driven by a second motor 450; the baffle block 320 is mainly provided to prevent the material from being discharged from the inlet end of the reaction vessel 300, thereby avoiding the influence on the normal reduction reaction process.
Further, as shown in fig. 4, the sealing device 500 includes a housing 510, wherein one end of the housing 510 is sleeved on the end of the reaction container 300 and is movably connected with the end through a sealing bearing; the other end of the housing 510 is fixedly connected with the charging basket 410, and the material conveying pipe 430 penetrates through the housing 510; an exhaust port 520 is arranged at the bottom of the shell 510, and the exhaust port 520 is communicated with the tail gas treatment device 600 through a pipeline; the structural design can seal and protect the connection part of the reaction vessel 30 and the material conveying pipe 430, and provide an exhaust part which does not influence the normal rotation of the reaction vessel 300, so that the overall structure is more reasonable.
Further, the tail gas treatment device 600 includes a cyclone dust collector 610, a bag dust collector 620 and a pulse dust collector 630 which are sequentially communicated, and an air outlet of the pulse dust collector 630 is communicated with a tail gas collecting tank 640 through a pipeline; the structure design can carry out multistage dust removal treatment on the tail gas, so that the tail gas can be conveniently collected and separated subsequently; the cyclone dust collector 610, the bag dust collector 620 and the pulse dust collector 630 can be purchased and used directly in the market.
Further, the sealing cylinder 700 has a cylindrical structure, and one end of the sealing cylinder 700 is sleeved at the end of the reaction container 300 and is movably connected with the end through a sealing bearing; the other end of the sealing cylinder 700 is communicated with the air supply device 900, and a feed inlet of the blanking device 800 is communicated with the bottom of the sealing cylinder 700; the sealing cylinder 700 is arranged to movably seal the end of the reaction vessel 300 without affecting the normal rotation of the reaction vessel 300, thereby preventing air exchange between the inside and the outside of the reaction vessel 300 and avoiding affecting the normal reducing atmosphere.
Further, the gas supply device 900 includes a tank 910 for gas transfer, where an air outlet of the tank 910 is communicated with the sealing cylinder 700 through a pipeline, and a plurality of air pipes communicated with an external air storage tank are communicated with a side wall of the tank 910; the setting of jar body 910 is used for gaseous mixing or transfer, and a plurality of trachea that jar body 910 lateral wall was linked together communicate multiple gas holders such as hydrogen gas holder, nitrogen gas holder, carbon monoxide gas holder respectively and is linked together, when needs multiple gaseous mixing participation reduction, need be with corresponding gas let in jar body 910 earlier in, in jar body 910 internal mixing back lets in reaction vessel 300 again, and it can provide suitable atmosphere condition, improves reduction efficiency and reduction quality.
Further, the discharging device 800 includes a collecting barrel 810, the top of the collecting barrel 810 is communicated with the bottom of the sealing barrel 700, and a discharging opening of the collecting barrel 810 is provided with an on-off valve 820.
Working principle:
when the invention is used for tungsten powder reduction, equipment is started, a certain amount of nitrogen is supplied into the reaction vessel 300 by the nitrogen storage tank through the gas supply device, so that the air in the reaction vessel is discharged into the tail gas treatment device 600; then, the first motor 310 is started, the first motor 310 drives the reaction vessel 300 to rotate, meanwhile, the feeding device 400 is started to feed materials into the reaction vessel 300, and external steam supply is started, and the steam enters the first clamping cavity 120 along with the gas pipe 130 to supply heat for materials in the reaction vessel 300; then, an external hydrogen gas storage tank is used for supplying a proper amount of hydrogen gas into the reaction vessel 300 through the gas supply device, the reaction vessel 300 continuously rolls materials in the rotating process, the materials and the hydrogen gas move in opposite directions and are fully mixed, tungsten powder is generated by reaction reduction, the produced tungsten powder moves to one end of a discharge hole of the reaction vessel 300, is cooled when passing through the cooling device 200, and is finally collected in the collecting barrel 810 of the discharging device 800.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The invention is not to be limited by the specific embodiments disclosed herein, and other embodiments are within the scope of the invention as defined by the claims of the present application.
Claims (7)
1. A large-scale rotary furnace for tungsten powder reduction is characterized in that: the device comprises a frame, a heating device (100) and a cooling device (200) which are arranged on the frame, and a reaction container (300) which is rotatably arranged between the heating device (100) and the cooling device (200), wherein the reaction container (300) is of a tubular structure and is driven to rotate around an axis by a first motor (310), two ends of the reaction container (300) are respectively penetrated through the heating device (100) and the cooling device (200), one side, close to the end part of the heating device (100), of the reaction container (300) is provided with a feeding device (400), the discharging end of the feeding device (400) is communicated with the feeding end of the reaction container (300), a sealing device (500) is sleeved outside the joint of the feeding device (400) and the reaction container (300), the sealing device (500) is communicated with a tail gas treatment device (600) through a pipeline, the outer side of the other port of the reaction container (300) is sleeved with a sealing cylinder (700), the sealing cylinder (700) is in movable sealing fit with the reaction container (300), and the bottom part (700) of the sealing cylinder (700) is communicated with the sealing cylinder (700), and the end part (700) is far away from the sealing cylinder (900); the heating device (100) comprises a plurality of first pipe bodies (110) which are spliced in sequence, each first pipe body (110) is installed on the frame, the axes of the plurality of first pipe bodies (110) are coincident, the inner wall of each first pipe body (110) is matched with the outer wall of the reaction container (300) in shape and is in sliding supporting, a first clamping cavity (120) is formed in the inner wall of each first pipe body (110), a gas pipe (130) communicated with a steam boiler is arranged above the heating device (100), each first clamping cavity (120) is communicated with the gas pipe (130) through a pipeline, a water collecting pipe (140) is arranged at the bottom of the heating device (100), and the bottom of each first clamping cavity (120) is communicated with the water collecting pipe (140) through a pipeline; a baffle block (320) is arranged at a port of the reaction container (300) close to one end of the feeding device (400), a bearing is sleeved on the outer side of the baffle block (320), and the outer wall of the bearing is matched with the inner wall of the reaction container (300); the feeding device (400) comprises a charging basket (410) and a barrel cover (420) which is covered on the top of the charging basket (410), a transversely arranged conveying pipe (430) is arranged at the bottom of the charging basket (410), a feed inlet is arranged at the top of the conveying pipe (430) in the charging basket (410), the other end of the conveying pipe (430) extends towards the direction of the reaction container (300) and penetrates through the baffle block (320) to extend into the reaction container (300), a spiral stirring rod (440) is arranged in the conveying pipe (430), and the spiral stirring rod (440) is driven by a second motor (450); the sealing device (500) comprises a shell (510), wherein one end of the shell (510) is sleeved at the end part of the reaction container (300) and is movably connected through a sealing bearing; the other end of the shell (510) is fixedly connected with the charging basket (410), and the conveying pipe (430) penetrates through the shell (510); an exhaust port (520) is formed in the bottom of the shell (510), and the exhaust port (520) is communicated with the tail gas treatment device (600) through a pipeline.
2. The large rotary kiln for tungsten powder reduction according to claim 1, wherein: the cooling device (200) comprises a second pipe body (210) and a second clamping cavity (220) arranged on the inner wall of the second pipe body (210), the second pipe body (210) is fixedly arranged on the rack, and the inner wall of the second pipe body (210) is matched with the outer wall of the reaction container (300) in shape and is in sliding supporting; the bottom of the second clamping cavity (220) is communicated with an external water supply pipe, and the top of the side wall of the second clamping cavity (220) is communicated with a water drain pipe.
3. The large rotary kiln for tungsten powder reduction according to claim 1, wherein: two ends of the reaction container (300) are arranged on the rack through a bracket, and the reaction container (300) traverses the heating device (100) and the cooling device (200) after being rotatably supported by the bracket; the outer wall of the reaction container (300) between the heating device (100) and the cooling device (200) is fixedly provided with a first chain wheel, the first motor (310) is fixedly installed on the frame, an output shaft of the first motor (310) is provided with a second chain wheel, and the second chain wheel and the first chain wheel are connected through chain transmission.
4. The large rotary kiln for tungsten powder reduction according to claim 1, wherein: the tail gas treatment device (600) comprises a cyclone dust collector (610), a cloth bag dust collector (620) and a pulse dust collector (630) which are sequentially communicated, wherein a gas outlet of the pulse dust collector (630) is communicated with a tail gas collecting tank (640) through a pipeline.
5. The large rotary kiln for tungsten powder reduction according to claim 1, wherein: the sealing cylinder (700) is of a cylindrical structure, and one end of the sealing cylinder (700) is sleeved at the end part of the reaction container (300) and is movably connected through a sealing bearing; the other end of the sealing cylinder (700) is communicated with the air supply device (900), and a feeding hole of the blanking device (800) is communicated with the bottom of the sealing cylinder (700).
6. The large rotary kiln for tungsten powder reduction according to claim 1, wherein: the gas supply device (900) comprises a tank body (910) for gas transfer, a gas outlet of the tank body (910) is communicated with the sealing cylinder (700) through a pipeline, and a plurality of gas pipes communicated with an external gas storage tank are arranged on the side wall of the tank body (910) in a communicated mode.
7. The large rotary kiln for tungsten powder reduction according to claim 1, wherein: the blanking device (800) comprises a collecting barrel (810), the top of the collecting barrel (810) is communicated with the bottom of the sealing barrel (700), and a blanking opening of the collecting barrel (810) is provided with a switch valve (820).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557716.4A CN110125430B (en) | 2019-06-26 | 2019-06-26 | Large rotary furnace for tungsten powder reduction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557716.4A CN110125430B (en) | 2019-06-26 | 2019-06-26 | Large rotary furnace for tungsten powder reduction |
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| Publication Number | Publication Date |
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| CN110125430A CN110125430A (en) | 2019-08-16 |
| CN110125430B true CN110125430B (en) | 2024-02-27 |
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| CN201910557716.4A Active CN110125430B (en) | 2019-06-26 | 2019-06-26 | Large rotary furnace for tungsten powder reduction |
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| CN104792154B (en) * | 2015-04-03 | 2017-01-25 | 石家庄新华能源环保科技股份有限公司 | Dividing wall type rotary kiln device |
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