CN109091995B - Rare earth metal waste gas treatment method - Google Patents
Rare earth metal waste gas treatment method Download PDFInfo
- Publication number
- CN109091995B CN109091995B CN201811023257.3A CN201811023257A CN109091995B CN 109091995 B CN109091995 B CN 109091995B CN 201811023257 A CN201811023257 A CN 201811023257A CN 109091995 B CN109091995 B CN 109091995B
- Authority
- CN
- China
- Prior art keywords
- rare earth
- elastic screen
- box
- waste gas
- rotating roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
Abstract
The invention belongs to the technical field of industrial waste gas treatment, and particularly relates to a rare earth metal waste gas treatment method, which uses a separation device, wherein the separation device comprises a box body, a water inlet pipe, a water discharge pipe, a drying box and a screening module; screening module's elastic screen cloth one end and box inner wall fixed connection, elastic screen cloth other end fixed connection is in the live-rollers outer lane, and the live-rollers passes through motor drive periodic positive and negative rotation, and stay cord one end fixed connection links firmly at the swinging arms side after the stay cord other end passes through the guide roll direction, and the swinging arms upper end articulates in the roof of the box bottom, and the swinging arms lower extreme is equipped with the spout, the first scraper blade of slidable mounting in the spout. The rare earth recovery device can recover rare earth particles in waste gas, the screening module is arranged, the rotating roller of the screening module rotates to turn out the rare earth particles in the trough of the elastic screen, and the rare earth particles fall into the collection box after being dried by the heating plate, so that the rare earth particles are separated and recovered, and the recovery efficiency of the rare earth particles can be improved.
Description
Technical Field
The invention belongs to the technical field of industrial waste gas treatment, and particularly relates to a rare earth metal waste gas treatment method.
Background
Rare earths are known as "industrial vitamins". Now has become an extremely important strategic resource. The rare earth element oxide refers to 15 lanthanide element oxides with atomic numbers of 57 to 71 in the periodic table of elements, and 17 element oxides of scandium and yttrium with similar chemical properties to the lanthanide elements. The rare earth elements are widely applied in the fields of petroleum, chemical industry, metallurgy, textile, ceramics, glass, permanent magnet materials and the like, and the value of rare earth oxides is increased along with the technological progress and the continuous breakthrough of application technology.
The rare earth electrolysis process is a process for producing rare earth alloy by taking Rare Earth Fluoride (REF) molten salt as electrolyte, dissolving Rare Earth Oxide (REO) in the electrolyte and carrying out electrolytic reaction at high temperature. In the process, CO and CO2 generated by electrolysis reaction are discharged, REO dust and REF dust are mixed in tail gas, fluorine elements in the tail gas are entrained in the tail gas, the tail gas is collectively called tail gas, and during tail gas treatment, precipitation wastewater and leaching wastewater are generated, and part of rare earth particles are doped in the wastewater, but the wastewater is usually directly discharged through a wastewater pipeline, so that the rare earth particles in the wastewater are lost, and the waste of rare earth materials is caused.
Some technical schemes for rare earth separation also appear in the prior art, for example, a chinese patent with application number 2017204046785 discloses a rare earth separation device, which comprises a vibration device; the lower part is equipped with vibrator in the first box, and first box top left side is connected with the inlet tube, and first box right side lower part is equipped with the collection mechanism, and first bottom half intermediate junction has the outlet pipe, and left wall intermediate junction has first filter screen in the first box, and vibrator is located the bottom left side of first filter screen.
This technical scheme separates the tombarthite granule in with the waste water through vibration filter screen, is stained with the tombarthite granule of attaching on the filter screen and is difficult for retrieving, and this scheme does not have the device of concentrating the recovery with the tombarthite granule of separation for the separation recovery efficiency of this scheme is lower.
Disclosure of Invention
In order to make up for the defects of the prior art, the rare earth metal waste gas treatment method provided by the invention uses the separation device, the separation device is provided with the screening module, the rotating roller of the screening module rotates, the pull rope pulls the swinging rod to rotate, the rare earth particles on the surface of the elastic screen are intensively pushed to the drying box through the first scraper, the rare earth particles in the wave trough at the rightmost end of the elastic screen are intensively pushed out, the rare earth particles in the wave trough are turned out through the rotation of the rotating roller, and after being dried through the heating plate, the rare earth particles fall into the collection box, so that the separation and recovery of the rare earth particles are completed, and the recovery efficiency of the rare earth particles can.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a rare earth metal waste gas treatment method, which comprises the following steps:
the method comprises the following steps: introducing the rare earth metal waste gas into a dust hood, and collecting solid flying dust particles through the dust hood;
step two: introducing the waste gas treated by the dust hood in the first step into a solid-gas separation filter bag, and collecting solid flying dust particles again;
step three: introducing the waste gas treated by the solid-gas separation filter bag in the step two into a spray tower, spraying by adopting water, and discharging the sprayed waste gas into the atmosphere;
step four: sending the leaching wastewater generated in the third step into a separation device, and separating and recovering solid particles in the wastewater;
step five: the wastewater treated in the fourth step is treated in a centralized way;
the separation device comprises a box body, a water inlet pipe, a water discharge pipe, a drying box and a screening module; a water inlet pipe is arranged on one side of the top of the box body; a drain pipe is arranged on one side of the bottom of the box body; a drying box is fixedly arranged on one side of the box body; the bottom of the drying box top plate is fixedly connected with the upper end of a supporting rod, the lower end of the supporting rod is fixedly connected with a heating plate, and a collecting box is slidably mounted on the drying box bottom plate; a screening module is arranged in the box body; the screening module comprises an elastic screen, a rotating roller, a pull rope, a guide roller, a swinging rod and a first scraper; the elastic screen is wave-shaped and inclines downwards, one end of the elastic screen is fixedly connected with the inner wall of the box body, the other end of the elastic screen is fixedly connected with the outer ring of the rotating roller, the rotating roller is rotatably arranged between the drying box and the box body, an automatic door is arranged above the rotating roller, the automatic door can slide up and down along the inner wall of the box body and is used for separating the box body from the drying box, the rotating roller is driven to rotate forwards and backwards periodically by a motor, one end of the pull rope is fixedly connected with the outer ring of the rotating roller, the other end of the pull rope is guided by the guide roller and then fixedly connected with the side edge of the swinging rod, the upper end of the swinging rod is hinged at the bottom of the top plate of the box body, the swing rod lower extreme is equipped with the spout, sliding installation first scraper blade in the spout, the one end that first scraper blade is located the spout is equipped with the spring, makes first scraper blade when the swing rod rotates, can stretch out and draw back along the swing rod axial. When the device is used, wastewater containing rare earth particles is introduced into the box body through the water inlet pipe, the wastewater falls onto the wavy elastic screen and flows downwards along the elastic screen, on one hand, the wavy elastic screen can buffer the impact force of the wastewater, on the other hand, the movement stroke of the wastewater passing through the surface of the wavy elastic screen is increased, and the wastewater in the trough of the elastic screen vibrates through the periodic positive and negative rotation of the rotating roller, so that the phenomenon that the rare earth particles are deposited to cause the mesh plugging of the elastic screen and influence the filtering effect of the rare earth particles is avoided; after holding back a certain amount of tombarthite granule on the elastic screen cloth, close the inlet tube this moment, it is rotatory through the live-rollers, stay cord pulling swinging arms is rotatory, concentrate the tombarthite granule on elastic screen cloth surface through first scraper blade to stoving case propelling movement, concentrate the tombarthite granule in the trough of the right-hand member of elastic screen cloth, rotation through the live-rollers, turn over the tombarthite granule in the elastic screen cloth trough, and after drying through the hot plate, fall into in the collecting box, accomplish the separation of tombarthite granule and retrieve, can improve the recovery efficiency of tombarthite granule.
Preferably, the outer ring of the rotating roller is fixedly connected with an arc-shaped block. The arc piece is when the live-rollers rotates for the trough of elastic screen fully arches, and the tombarthite granule in the elastic screen trough of being convenient for drops, thereby improves tombarthite granule's separation recovery efficiency.
Preferably, a set of air bags are arranged on the outer arc surface of the arc-shaped block, a set of air blowing holes are formed in the surface of each air bag, the air bags are communicated with the air supply pipe, air outlet one-way valves are installed in the air blowing holes, and air inlet one-way valves are installed on the air supply pipe. When the arc piece extrudees the elastic screen, the gasbag produces the air current, blows through the mesh of elastic screen, blows off the tombarthite granule on elastic screen surface for the abundant drop of tombarthite granule, thereby improves tombarthite granule's recovery efficiency.
Preferably, the heating plate is arranged in an arc shape, and the inner arc surface of the heating plate is concentric with the rotating roller. When the live-rollers is rotatory, the elastic screen cloth is equivalent to the winding in the live-rollers outer lane, and curved hot plate adapts to the change of elastic screen cloth for elastic screen cloth surface thermally equivalent has avoided local overheat to cause elastic screen cloth life to reduce, and local tombarthite granule can not fully dry, influences tombarthite granule's recovery.
Preferably, a second scraper is arranged on one side of the rotating roller, the second scraper is arc-shaped, the outer arc surface of the second scraper is connected with one end of a fixed rod through a spring, and the other end of the fixed rod is fixedly connected to the inner wall of the drying box. The air current that the gasbag produced blows along second scraper blade one end along with the live-rollers for the second scraper blade produces and rocks, and the second scraper blade that rocks further strikes the tombarthite granule on elastic screen surface, avoids tombarthite granule to paste on elastic screen, thereby improves tombarthite granule's recovery efficiency.
Preferably, a group of baffle plates which are arranged in a staggered mode are fixedly connected in the groove on one side, close to the rotating roller, of the elastic screen. From the top rare earth particle in the waste water of flowing through down is held back by the baffle, and the rare earth particle falls into between a set of baffle, forms a passageway between two baffles, and the air current that the gasbag produced is through the passageway direction for the air current can be concentrated and blow to the rare earth particle, abundant blows off the rare earth particle, thereby improves the recovery efficiency of rare earth particle.
The invention has the following beneficial effects:
1. according to the rare earth metal waste gas treatment method, the separation device is used, the screening module is arranged in the separation device, the rotating roller of the screening module rotates, the pull rope pulls the swinging rod to rotate, the rare earth particles on the surface of the elastic screen are intensively pushed to the drying box through the first scraper, the rare earth particles in the wave trough at the rightmost end of the elastic screen are intensively pushed out, the rare earth particles in the wave trough of the elastic screen are overturned through the rotation of the rotating roller, and after the rare earth particles are dried through the heating plate, the rare earth particles fall into the collection box, so that the rare earth particles are separated and recovered, and the recovery efficiency of the rare earth particles can be improved.
2. According to the rare earth metal waste gas treatment method, the separation device is used, the outer ring of the rotating roller is fixedly connected with the arc-shaped block, the outer arc surface of the arc-shaped block is provided with the group of air bags, the elastic screen is extruded by the arc-shaped block, so that the wave trough of the elastic screen is fully arched, and the rare earth particles in the wave trough of the elastic screen can fall conveniently; meanwhile, the extruded air bag generates air flow, the air flow blows through meshes of the elastic screen, and rare earth particles on the surface of the elastic screen are blown away, so that the rare earth particles fall sufficiently, and the recovery efficiency of the rare earth particles is improved.
3. According to the rare earth metal waste gas treatment method, the separation device is used, the group of baffles which are arranged in a staggered mode are fixedly connected in the groove on the side, close to the rotating roller, of the elastic screen, rare earth particles in waste water flowing from top to bottom are intercepted by the baffles, the rare earth particles fall between the group of baffles, a channel is formed between the two baffles, airflow generated by the air bag is guided through the channel, the airflow can be blown to the rare earth particles in a concentrated mode, the rare earth particles are blown away fully, and therefore the recovery efficiency of the rare earth particles is improved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a front view of the separating apparatus of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at E;
in the figure: the drying box comprises a box body 1, a water inlet pipe 11, a water outlet pipe 12, a drying box 2, a support rod 21, a heating plate 22, a collecting box 23, a screening module 3, an elastic screen 31, a rotating roller 32, a pull rope 33, a guide roller 34, a swing rod 35, a first scraper 36, an arc-shaped block 4, an air bag 41, a second scraper 5, a fixed rod 51, a groove 6, a baffle 7 and an automatic door 8.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 3, a rare earth metal exhaust gas treatment method according to the present invention includes the steps of:
the method comprises the following steps: introducing the rare earth metal waste gas into a dust hood, and collecting solid flying dust particles through the dust hood;
step two: introducing the waste gas treated by the dust hood in the first step into a solid-gas separation filter bag, and collecting solid flying dust particles again;
step three: introducing the waste gas treated by the solid-gas separation filter bag in the step two into a spray tower, spraying by adopting water, and discharging the sprayed waste gas into the atmosphere;
step four: sending the leaching wastewater generated in the third step into a separation device, and separating and recovering solid particles in the wastewater;
step five: the wastewater treated in the fourth step is treated in a centralized way;
the separation device comprises a box body 1, a water inlet pipe 11, a water outlet pipe 12, a drying box 2 and a screening module 3; a water inlet pipe 11 is arranged on one side of the top of the box body 1; a drain pipe 12 is arranged on one side of the bottom of the box body 1; a drying box 2 is fixedly arranged on one side of the box body 1; the bottom of the top plate of the drying box 2 is fixedly connected with the upper end of a supporting rod 21, the lower end of the supporting rod 21 is fixedly connected with a heating plate 22, and a collecting box 23 is slidably arranged on the bottom plate of the drying box 2; a screening module 3 is arranged in the box body 1; the screening module 3 comprises an elastic screen 31, a rotating roller 32, a pulling rope 33, a guide roller 34, a swinging rod 35 and a first scraper 36; the elastic screen 31 is wavy and inclines downwards, one end of the elastic screen 31 is fixedly connected with the inner wall of the box body 1, the other end of the elastic screen 31 is fixedly connected with the outer ring of the rotating roller 32, the rotating roller 32 rotates and is installed between the drying box 2 and the box body 1, the automatic door 8 is arranged above the rotating roller 32, the automatic door 8 can slide up and down along the inner wall of the box body 1, the automatic door 8 is used for separating the box body 1 from the drying box 2, the rotating roller 32 periodically rotates forwards and backwards through the motor drive, one end of the pull rope 33 is fixedly connected with the outer ring of the rotating roller 32, the other end of the pull rope 33 is fixedly connected with the side edge of the swing rod 35 after being guided by the guide roller 34, the upper end of the swing rod 35 is hinged at the bottom of the top plate of the box body 1, the lower end of the swing rod 35 is, when the swing lever 35 is rotated, the first blade 36 can be extended and contracted in the axial direction of the swing lever 35. When the device is used, wastewater containing rare earth particles is introduced into the box body 1 through the water inlet pipe 11, the wastewater falls onto the wavy elastic screen 31 and flows downwards along the elastic screen 31, on one hand, the impact force of the wastewater can be buffered by the wavy elastic screen 31, on the other hand, the movement stroke of the wastewater passing through the surface of the wavy elastic screen 31 is increased, and the wastewater in the wave trough of the elastic screen 31 is vibrated through the periodic positive and negative rotation of the rotating roller 32, so that the phenomenon that the meshes of the elastic screen 31 are blocked due to the deposition of the rare earth particles to influence the filtering effect of the rare earth particles is avoided; after intercepting a certain amount of tombarthite granule on elastic screen 31, close inlet tube 11 this moment, it is rotatory through live-rollers 32, stay cord 33 pulling swinging arms 35 is rotatory, concentrate the tombarthite granule on elastic screen 31 surface through first scraper blade 36 to stoving case 2 propelling movement, concentrate the tombarthite granule in the trough of the rightmost end of elastic screen 31, rotation through live-rollers 32, turn over the tombarthite granule in the trough of elastic screen 31, and after drying through the hot plate, fall into in collecting box 23, accomplish the separation recovery of tombarthite granule, can improve the recovery efficiency of tombarthite granule.
In one embodiment of the present invention, the outer ring of the rotating roller 32 is fixedly connected to the arc block 4. Arc piece 4 is when live-rollers 32 rotates for the trough of elastic screen 31 fully arches, and the tombarthite granule in the elastic screen 31 trough of being convenient for drops, thereby improves tombarthite granule's separation recovery efficiency.
As an embodiment of the present invention, a set of air bags 41 is disposed on the outer arc surface of the arc block 4, a set of air blowing holes is disposed on the surface of the air bags 41, the air bags 41 are communicated with the air supply pipe, air outlet check valves are installed in the air blowing holes, and air inlet check valves are installed on the air supply pipe. When the arc piece 4 extrudees elastic screen 31, gasbag 41 produces the air current, blows through elastic screen 31's mesh, blows off the tombarthite granule on elastic screen 31 surface for the abundant drop of tombarthite granule, thereby improves tombarthite granule's recovery efficiency.
In one embodiment of the present invention, the heating plate 22 is formed in an arc shape, and the inner arc surface of the heating plate 22 is concentric with the rotating roller 32. When the live-rollers 32 rotate, the elastic screen 31 is equivalent to winding in the outer lane of live-rollers 32, and curved hot plate 22 adapts to the change of elastic screen 31 for elastic screen 31 surface thermally equivalent has avoided local overheat to cause elastic screen 31 life to reduce, and local tombarthite granule can not be fully dry, influences tombarthite granule's recovery.
In one embodiment of the present invention, a second scraper 5 is provided on one side of the rotating roller 32, the second scraper 5 is arc-shaped, the outer arc surface thereof is connected with one end of a fixed rod 51 through a spring, and the other end of the fixed rod 51 is fixedly connected to the inner wall of the drying box 2. The air current that gasbag 41 produced blows along second scraper blade 5 one end along with live-rollers 32 for second scraper blade 5 produces and rocks, and the second scraper blade 5 that rocks further strikes the tombarthite granule on elastic screen 31 surface, avoids the tombarthite granule to paste on elastic screen, thereby improves tombarthite granule's recovery efficiency.
In one embodiment of the present invention, a set of staggered baffles 7 is fixedly connected to the groove 6 of the elastic screen 31 near the rotating roller 32. From the top rare earth particle in the waste water that flows through down is held back by baffle 7, and the rare earth particle falls into between a set of baffle 7, forms a passageway between two baffle 7, and the air current that gasbag 41 produced is through the passageway direction for the air current can be concentrated and blow to the rare earth particle, abundant blows off the rare earth particle, thereby improves the recovery efficiency of rare earth particle.
When the device is used, wastewater containing rare earth particles is introduced into the box body 1 through the water inlet pipe 11, the wastewater falls onto the wavy elastic screen 31 and flows downwards along the elastic screen 31, on one hand, the impact force of the wastewater can be buffered by the wavy elastic screen 31, on the other hand, the movement stroke of the wastewater passing through the surface of the wavy elastic screen 31 is increased, and the wastewater in the wave trough of the elastic screen 31 is vibrated through the periodic positive and negative rotation of the rotating roller 32, so that the phenomenon that the meshes of the elastic screen 31 are blocked due to the deposition of the rare earth particles to influence the filtering effect of the rare earth particles is avoided; after a certain amount of rare earth particles are intercepted on the elastic screen mesh 31, the water inlet pipe 11 is closed at the moment, the rotating roller 32 rotates, the swinging rod 35 is pulled to rotate by the pull rope 33, the rare earth particles on the surface of the elastic screen mesh 31 are intensively pushed to the drying box 2 through the first scraper 36, the rare earth particles concentrated in the wave trough at the rightmost end of the elastic screen mesh 31 are overturned out through the rotation of the rotating roller 32, and fall into the collecting box 23 after being dried through the heating plate, the separation and recovery of the rare earth particles are completed, and the recovery efficiency of the rare earth particles can be improved;
rare earth particles adhered to the elastic screen 31 are not easy to separate, an arc-shaped block 4 is fixedly connected to the outer ring of the rotating roller 32, a group of air bags 41 are arranged on the outer arc surface of the arc-shaped block 4, the elastic screen 31 is extruded by the arc-shaped block 4, so that the wave troughs of the elastic screen 31 are fully arched, and the rare earth particles in the wave troughs of the elastic screen 31 can fall conveniently; meanwhile, the extruded air bag 41 generates air flow, and blows air through meshes of the elastic screen 31 to blow off rare earth particles on the surface of the elastic screen 31, so that the rare earth particles fall off fully, and the recovery efficiency of the rare earth particles is improved;
further, blow away the tombarthite granule on the elastic screen cloth 31 for abundant, baffle 7 that a set of crisscross setting of recess 6 internal fixation connection that is close to on one side of the live-rollers 32 at elastic screen cloth 31, tombarthite granule in the waste water that flows through from the top down, be held back by baffle 7, tombarthite granule falls into between a set of baffle 7, form a passageway between two baffles 7, the air current that gasbag 41 produced is through the passageway direction, make the air current can concentrate blow to tombarthite granule, abundant blow away the tombarthite granule, thereby improve the recovery efficiency of tombarthite granule.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (2)
1. A rare earth metal exhaust gas treatment method is characterized by comprising the following steps:
the method comprises the following steps: introducing the rare earth metal waste gas into a dust hood, and collecting solid flying dust particles through the dust hood;
step two: introducing the waste gas treated by the dust hood in the first step into a solid-gas separation filter bag;
step three: introducing the waste gas treated by the solid-gas separation filter bag in the step two into a spray tower, spraying by adopting water, and discharging the sprayed waste gas into the atmosphere;
step four: sending the leaching wastewater generated in the third step into a separation device, and separating and recovering solid particles in the wastewater;
step five: the wastewater treated in the fourth step is treated in a centralized way;
the separation device comprises a box body (1), a water inlet pipe (11), a water outlet pipe (12), a drying box (2) and a screening module (3); a water inlet pipe (11) is arranged on one side of the top of the box body (1); a drain pipe (12) is arranged on one side of the bottom of the box body (1); a drying box (2) is fixedly arranged on one side of the box body (1); the bottom of the top plate of the drying box (2) is fixedly connected with the upper end of a supporting rod (21), the lower end of the supporting rod (21) is fixedly connected with a heating plate (22), and a collecting box (23) is slidably mounted on the bottom plate of the drying box (2); a screening module (3) is arranged in the box body (1); the screening module (3) comprises an elastic screen (31), a rotating roller (32), a pull rope (33), a guide roller (34), a swing rod (35) and a first scraper (36); elastic screen (31) is the wave, and the slope is downward, elastic screen (31) one end and box (1) inner wall fixed connection, elastic screen (31) other end fixed connection is in rotor (32) outer lane, rotor (32) rotate between installation stoving case (2) and box (1), and the top of rotor (32) is equipped with automatically-controlled door (8), automatically-controlled door (8) can be followed box (1) inner wall and slided from top to bottom, rotor (32) are through the periodic positive and negative rotation of motor drive, stay cord (33) one end fixed connection is in rotor (32) outer lane, the stay cord (33) other end links firmly at swinging arms (35) side after leading through guide roll (34), swinging arms (35) upper end articulates in box (1) roof bottom, swinging arms (35) lower extreme is equipped with the spout, sliding installation first scraper blade (36) in the spout, the first scraper (36) can axially extend and retract along the swinging rod (35);
the outer ring of the rotating roller (32) is fixedly connected with an arc-shaped block (4);
a group of air bags (41) are arranged on the outer arc surface of the arc-shaped block (4), a group of air blowing holes are formed in the surface of each air bag (41), the air bags (41) are communicated with an air supply pipe, an air outlet one-way valve is installed in each air blowing hole, and an air inlet one-way valve is installed on each air supply pipe;
and a second scraper (5) is arranged on one side of the rotating roller (32), the second scraper (5) is arc-shaped, the outer arc surface of the second scraper is connected with one end of a fixed rod (51) through a spring, and the other end of the fixed rod (51) is fixedly connected to the inner wall of the drying box (2).
2. The method according to claim 1, wherein: the heating plate (22) is arranged into an arc shape, and the inner arc surface of the heating plate (22) is concentric with the rotating roller (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811023257.3A CN109091995B (en) | 2018-09-03 | 2018-09-03 | Rare earth metal waste gas treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811023257.3A CN109091995B (en) | 2018-09-03 | 2018-09-03 | Rare earth metal waste gas treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109091995A CN109091995A (en) | 2018-12-28 |
| CN109091995B true CN109091995B (en) | 2021-03-26 |
Family
ID=64864996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811023257.3A Active CN109091995B (en) | 2018-09-03 | 2018-09-03 | Rare earth metal waste gas treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109091995B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0647224A (en) * | 1992-07-28 | 1994-02-22 | Topy Ind Ltd | Waste gas treatment |
| CN201006387Y (en) * | 2006-12-07 | 2008-01-16 | 桂林金格电工电子材料科技有限公司 | Dust removing plant for silver-based alloy melting furnace |
| CN206196382U (en) * | 2016-11-03 | 2017-05-31 | 潘秀娟 | A kind of anti-jamming maize sheller with grain palpus separation function |
| CN206746093U (en) * | 2017-03-08 | 2017-12-15 | 广东益康生环保设备有限公司 | A kind of multistage solid-liquid separating equipment |
| CN107583741A (en) * | 2017-09-07 | 2018-01-16 | 北京安康科创节能环保科技有限公司 | A kind of Rare Earth Mine crushing and screening device |
| CN207405223U (en) * | 2017-10-26 | 2018-05-25 | 江西正潭新材料股份有限公司 | A kind of Rare Earth Separation device |
-
2018
- 2018-09-03 CN CN201811023257.3A patent/CN109091995B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0647224A (en) * | 1992-07-28 | 1994-02-22 | Topy Ind Ltd | Waste gas treatment |
| CN201006387Y (en) * | 2006-12-07 | 2008-01-16 | 桂林金格电工电子材料科技有限公司 | Dust removing plant for silver-based alloy melting furnace |
| CN206196382U (en) * | 2016-11-03 | 2017-05-31 | 潘秀娟 | A kind of anti-jamming maize sheller with grain palpus separation function |
| CN206746093U (en) * | 2017-03-08 | 2017-12-15 | 广东益康生环保设备有限公司 | A kind of multistage solid-liquid separating equipment |
| CN107583741A (en) * | 2017-09-07 | 2018-01-16 | 北京安康科创节能环保科技有限公司 | A kind of Rare Earth Mine crushing and screening device |
| CN207405223U (en) * | 2017-10-26 | 2018-05-25 | 江西正潭新材料股份有限公司 | A kind of Rare Earth Separation device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109091995A (en) | 2018-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207371301U (en) | A kind of spray column and the lacquer spraying waste gas processing unit with the spray column | |
| CN109091924B (en) | Rare earth particle separation system | |
| CN112717614A (en) | Demisting method and device based on rotary screen drum | |
| CN104608059A (en) | Shot blasting machine | |
| CN202036897U (en) | High-temperature tail gas dust removal system of stove kiln | |
| CN109091995B (en) | Rare earth metal waste gas treatment method | |
| CN210674576U (en) | Filter cartridge dust remover for furnace gas purification of submerged arc furnace | |
| CN2920362Y (en) | Pulse reversed spray blow bag type dust collector | |
| CN108434882A (en) | Filtering dust collecting equipment in negative pressure | |
| CN206652324U (en) | A kind of carbon black powders dust arrester | |
| CN108554149A (en) | Flue gas de-dusting process | |
| CN201297862Y (en) | Dust remover for rotary kiln | |
| CN107855279A (en) | A kind of crop seeds sieve cleaning device | |
| CN209667408U (en) | A kind of collection device for tea powder packing machine | |
| CN108452619A (en) | A kind of fume dust remover of pressure-bearing type rotating filter | |
| CN217371977U (en) | Sand blasting equipment for surface treatment | |
| CN204431073U (en) | A kind of shot-blasting machine cloth bag back-blowing dust removing device | |
| CN103933802B (en) | A kind of angle-inserting type filter cartridge dust remover | |
| CN207153372U (en) | A kind of flue gas classified filtering dust arrester | |
| CN215744842U (en) | Winnowing machine capable of automatically cleaning | |
| CN206566643U (en) | A kind of inward flow filtration-type filter core jet entrainment deashing device | |
| CN210995733U (en) | Sand dust removing and recycling device | |
| CN204450243U (en) | A kind of dust collecting device of shot blasting machine | |
| CN207050032U (en) | A kind of flue purifier | |
| CN201073578Y (en) | High trestle type dust removing backbone of injector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210309 Address after: Room 203, 2 / F, main building, 188 Kaifa Avenue East section, Taizhou Development Zone, Zhejiang 318000 Applicant after: Zhejiang Qingcheng Environmental Technology Co.,Ltd. Address before: 233030 Bengbu college, 801 Shengli East Road, Bengbu City, Anhui Province Applicant before: Wang Kang |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |