CN216321798U - Rare earth oxide production device - Google Patents
Rare earth oxide production device Download PDFInfo
- Publication number
- CN216321798U CN216321798U CN202122998901.2U CN202122998901U CN216321798U CN 216321798 U CN216321798 U CN 216321798U CN 202122998901 U CN202122998901 U CN 202122998901U CN 216321798 U CN216321798 U CN 216321798U
- Authority
- CN
- China
- Prior art keywords
- rare earth
- microwave reaction
- microwave
- earth oxide
- reaction cavity
- 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
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
The utility model discloses a rare earth oxide production device. The rare earth oxide production apparatus includes: calcining equipment and tail gas absorption equipment; the calcining equipment comprises a microwave reaction cavity and a microwave emitting element; the microwave reaction cavity is used for accommodating rare earth carbonate and calcining and decomposing the rare earth carbonate into rare earth oxide and tail gas, and the microwave emitting element is used for providing microwave energy for the rare earth carbonate in the microwave reaction cavity; the tail gas absorption equipment comprises an exhaust pipe, an air entraining element and an absorption bin; one end of the exhaust pipe is connected with the microwave reaction cavity, and the other end of the exhaust pipe is connected with the air entraining element; the air-entraining element is connected with the absorption bin and is arranged to introduce the tail gas into the absorption bin; the absorption bin is arranged to contain liquid to be reacted and enable tail gas to react with the liquid to be reacted. This rare earth oxide apparatus for producing can absorb the tail gas that the calcination produced.
Description
Technical Field
The utility model relates to a rare earth oxide production device.
Background
In the process of preparing rare earth oxide by calcining and decomposing rare earth carbonate, the absorption water and the crystal water of the rare earth carbonate need to be removed in sequence at high temperature, and then the rare earth oxide is further decarbonized and decomposed to obtain various rare earth oxides suitable for downstream application. At present, most enterprises adopt the traditional mode of natural gas or electric heating, the rare earth carbonate is placed in a sagger, and is calcined and decomposed into rare earth oxide in a tunnel kiln, a pushed slab kiln and a roller kiln furnace through a heating section, a roasting section and a cooling section. The calcination mode is static calcination, energy is transmitted by conduction and radiation, heating is uneven, and sintering or under-burning is easy to occur; the decomposition speed is slow, the calcination time is long, and the energy consumption is high; the feeding and discharging are discontinuous, and the labor productivity is low; CO generated by decomposing tail gas and carbonate after natural gas calcination2Gas mixture, pure CO cannot be recovered2Gas and carbon resources are difficult to recover. Under the action of microwave energy, substance molecules generate ultrahigh frequency vibrationThe reaction is enhanced, the reaction time is shortened, and the energy consumption is reduced. However, at present, there is no microwave calcination apparatus capable of recovering carbon resources generated by calcination of rare earth carbonate.
CN203928703U discloses a microwave dynamic high-temperature continuous roasting device. The equipment comprises a rack, a furnace body, a microwave heating system, a temperature measuring system, a feeding system, a discharging system, a cooling system, a PLC (programmable logic controller) control device and a double-helix stirring device. The microwave heating system comprises a microwave heating cavity and a magnetron, the temperature measuring system comprises a thermocouple, the cooling system comprises a circulating cooling water pipe, and the double-helix stirring device comprises a stirring shaft, blades, a chain, a rotating motor and a bearing.
CN103851899A discloses a microwave rotary kiln. The microwave rotary kiln comprises an elevated bunker, a smoke exhaust system, a microwave reaction cavity, a hearth, a discharging mechanism, a remote control system, a microwave power source, a water cooling system, a heat insulation layer and a temperature measuring element.
CN203559101U discloses a microwave calcination apparatus. The microwave calcining equipment comprises a feeding device and a discharging device, wherein the feeding device and the discharging device are respectively connected with a microwave calcining furnace through a feeding passage and a discharging passage, a microwave heating source is installed in the microwave calcining furnace, the feeding passage is provided with an exhaust device for exhausting steam in the calcining furnace, the discharging passage is provided with a cooling device, and a plate turning mechanism is installed in a hearth of the microwave calcining furnace.
CN202873111U discloses a microwave roasting equipment. The equipment comprises a furnace body, wherein a plurality of cavities are arranged in the furnace body, a microwave source and a waveguide are arranged on two sides of each cavity, the microwave source is connected with the cavities through the waveguide, and an air inlet duct is arranged on the side wall of each cavity.
The microwave roasting equipment cannot collect gas generated by roasting, and cannot realize the recycling of resources.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide a rare earth oxide production apparatus capable of absorbing gas generated by calcination.
The technical purpose is achieved through the following technical scheme.
The utility model provides a rare earth oxide production device, comprising: calcining equipment and tail gas absorption equipment;
the calcining equipment comprises a microwave reaction cavity and a microwave emitting element; the microwave reaction cavity is used for accommodating rare earth carbonate and calcining and decomposing the rare earth carbonate into rare earth oxide and tail gas, and the microwave emitting element is used for providing microwave energy for the rare earth carbonate in the microwave reaction cavity;
the tail gas absorption equipment comprises an exhaust pipe, an air entraining element and an absorption bin; one end of the exhaust pipe is connected with the microwave reaction cavity, and the other end of the exhaust pipe is connected with the air entraining element; the air-entraining element is connected with the absorption bin and is arranged to introduce the tail gas into the absorption bin; the absorption bin is arranged to contain liquid to be reacted and enable tail gas to react with the liquid to be reacted.
According to the rare earth oxide production apparatus of the present invention, preferably, the exhaust pipe includes a branch exhaust pipe and a main exhaust pipe;
the branch exhaust pipe comprises a first vertical part, a second vertical part and a horizontal part; one end of the first vertical part is connected with one end of the horizontal part, and the other end of the horizontal part is connected with one end of the second vertical part; one end of the first vertical part, which is far away from the horizontal part, is connected with the microwave reaction cavity, and one end of the second vertical part, which is far away from the horizontal part, is connected with the microwave reaction cavity;
one end of the main exhaust pipe is connected with the horizontal part, and the other end of the main exhaust pipe is connected with the air entraining element.
According to the rare earth oxide production apparatus of the present invention, preferably, the tail gas absorption device further includes a connection pipe;
one end of the connecting pipe is connected with the air entraining element, and the other end of the connecting pipe is connected with the absorption bin.
According to the rare earth oxide production device of the present invention, preferably, the calcination apparatus further includes a heat insulating layer disposed outside the microwave reaction chamber;
the heat-insulating layer is provided with a first opening and a second opening; one end of the first vertical part, which is far away from the horizontal part, is arranged in the first opening and is communicated with the microwave reaction cavity; one end of the second vertical part, which is far away from the horizontal part, is arranged in the second opening and is communicated with the microwave reaction cavity.
According to the rare earth oxide production apparatus of the present invention, preferably, the calcination device further includes a first stirring unit and a first stirring drive unit;
at least one part of the first stirring unit is arranged in the microwave reaction cavity and is used for stirring the rare earth carbonate in the microwave reaction cavity;
the first stirring driving unit is connected with the first stirring unit and is arranged to drive the first stirring unit to rotate.
According to the rare earth oxide production device of the present invention, preferably, the calcination apparatus further includes a temperature measuring element disposed on the microwave reaction chamber, which is configured to measure a temperature of the microwave reaction chamber;
the microwave reaction cavity is provided with a temperature rising section, a calcining section and a heat preservation section; and at least one temperature measuring element is respectively arranged on the temperature rising section, the calcining section and the heat preservation section.
According to the rare earth oxide production device of the present invention, preferably, the calcination apparatus further includes a feeding unit and an air inlet pipe, and the microwave reaction chamber is provided with a feeding port and an air inlet;
the feeding unit is connected with the feeding hole and is used for providing rare earth carbonate to the microwave reaction cavity;
the gas inlet pipe is connected with the gas inlet, and the gas inlet pipe is arranged to charge gas into the microwave reaction cavity.
According to the rare earth oxide production apparatus of the present invention, preferably, the feeding unit includes a feeding bin, a feeder, and a feeding motor;
the feeding bin is connected with the feeding hole and is used for storing rare earth carbonate;
the feeder is connected with the feeding bin and is arranged to convey the rare earth carbonate in the feeding bin to the feeding hole;
the feeding motor is connected with the feeder and is arranged to drive the feeder to operate.
According to the rare earth oxide production device of the present invention, preferably, the rare earth oxide production device further comprises a cooling device, and a cooling water pipe is arranged outside the microwave emitting element;
the cooling device comprises a cooling cavity, the cooling cavity is provided with a product inlet and a product outlet, the product inlet is connected with the microwave reaction cavity, and the cooling cavity is used for cooling the rare earth oxide;
and a cooling water channel is arranged outside the cooling cavity, and a cooling water inlet and a cooling water outlet are arranged on the cooling water channel.
According to the rare earth oxide production apparatus of the present invention, preferably, the cooling device further includes a second stirring unit and a second stirring drive unit;
at least one part of the second stirring unit is arranged in the cooling cavity and is used for stirring the rare earth oxide in the cooling cavity;
the second stirring driving unit is connected with the second stirring unit and is configured to drive the second stirring unit to rotate.
The rare earth oxide production device is provided with a tail gas absorption device, and can absorb tail gas generated by calcination.
Drawings
FIG. 1 is a schematic structural diagram of a rare earth oxide production apparatus according to the present invention. The reference numbers are as follows:
11-a microwave reaction chamber; 12-a microwave emitting element; 13-a heat-insulating layer; 14-a temperature measuring element; 15-air inlet pipe; 16-a first stirring unit; 17-a first drive unit; 181-feeding bin; 182-a feeder; 183-feeding motor; 2111-a first vertical portion; 2112-a second vertical portion; 2113-horizontal portion; 212-Total exhaust pipe; 22-a bleed air element; 23-an absorption bin; 24-a connecting tube; 31-a cooling chamber; 32-cooling water channel; 33-a second stirring unit; 34-second stirring drive unit.
Detailed Description
The present invention is described in more detail below, but the present invention is not limited thereto.
The rare earth oxide production device comprises calcining equipment and tail gas absorption equipment. In certain embodiments, a cooling device is also included.
< calcination apparatus >
The calcining equipment comprises a microwave reaction cavity and a microwave emitting element. In certain embodiments, the calcining apparatus further comprises one or more of an insulating layer, a temperature measuring device, an air inlet pipe, a first stirring unit, a first stirring driving unit, and a feeding unit.
The microwave reaction chamber is configured to contain the rare earth carbonate and decompose the rare earth carbonate into rare earth oxide and tail gas. The microwave reaction cavity can be in a cylindrical structure. The microwave reaction cavity can be sequentially provided with a temperature rising section, a calcining section and a heat preservation section. This allows the rare earth carbonate to be calcined at different temperatures. The microwave reaction chamber can be provided with a feed inlet, a discharge outlet and an air inlet. The feed inlet is close to the first stirring drive unit. The air inlet is arranged near the feeding hole and on one side of the feeding hole far away from the first stirring driving unit. The discharge port is arranged at one end of the microwave reaction cavity far away from the feed port. The temperature raising section is arranged at a position close to the feed inlet. The microwave reaction cavity can be formed by a wave-transparent heat-insulating material.
The microwave transmitting element is arranged on the periphery of the microwave reaction cavity. The microwave emitting element provides microwave energy to the rare earth carbonate in the microwave reaction chamber. The microwave radiation element may be provided in plurality. The plurality of microwave emitting elements may be dispersedly disposed at the outer circumference of the microwave reaction chamber. The microwave emitting element can be externally provided with a cooling water pipe. The cooling water pipe is arranged to cool the microwave emitting element. The microwave emitting element may be a magnetron.
The calcining equipment of the utility model also can comprise an insulating layer. The heat preservation sets up in the periphery of microwave reaction chamber, and it is used for keeping warm to microwave reaction chamber. The insulating layer can be provided with a first opening and a second opening. The heat-insulating layer can be provided with an opening of a side temperature device. The temperature measuring device opening may be provided in plurality. The heat preservation layers at the corresponding positions of the temperature rising section, the calcining section and the heat preservation section are respectively provided with at least one temperature measuring device opening. Thus, the temperature of different reaction sections can be measured.
The calcining equipment of the utility model can also comprise a temperature measuring device. The temperature measuring device is arranged on the microwave reaction cavity. The temperature measuring device is configured to measure the temperature of the microwave reaction chamber. The temperature measuring devices are respectively arranged on the heating section, the calcining section and the heat preservation section of the microwave reaction cavity. Thus, the temperature of different reaction sections can be detected. The temperature measuring device may be disposed in the temperature measuring device opening. The temperature measuring device can be contacted with the microwave reaction cavity. The temperature measuring device may be a thermocouple.
The calcining apparatus of the present invention may further comprise an inlet tube. The air inlet pipe is connected with the air inlet. The gas inlet pipe is arranged to fill gas into the microwave reaction cavity. This enables the rare earth carbonate to be calcined in an oxygen-free environment. The intake pipe may be provided with a flow meter. This enables the rate of introduction of gas to be controlled.
The calcining apparatus of the present invention may further comprise a first stirring unit. At least a portion of the first stirring unit is disposed within the microwave reaction chamber. In some embodiments, a portion of the first stirring unit is disposed within the microwave reaction chamber, and one end of the first stirring unit is disposed outside the microwave reaction chamber. The first stirring unit is arranged to stir the rare earth carbonate in the microwave reaction cavity. The first stirring unit may be a blade stirring paddle. This can accelerate the reaction of the rare earth carbonate in the microwave reaction chamber.
The calcining apparatus of the present invention may further comprise a first stirring driving unit. The first stirring driving unit is connected with the first stirring unit. In some embodiments, the first stirring driving unit is connected with one end of the first stirring unit, which is arranged outside the microwave reaction chamber. The first stirring driving unit is arranged to drive the first stirring unit to rotate. The first agitation driving unit may be a motor.
The calcining apparatus of the present invention may further comprise a feeding unit. The feeding unit is connected with the feeding hole. The feed unit is configured to provide the rare earth carbonate to the microwave reaction chamber. In certain embodiments, the feeding unit may include a feeding bin, a feeder, and a feeding motor. The feeding bin is connected with the feeding hole and is used for storing the rare earth carbonate. The feeder links to each other with adding the feed bin, and it sets up to carry the rare earth carbonate that adds in the feed bin to the feed inlet. The feeder may be a rotary feeder. According to one embodiment of the utility model, the feeder is provided with 6 paddles, the angle between two adjacent paddles being 60 °. This can prevent the leakage of the microwave. The feeding motor is connected with the feeder. The feeder is driven to operate by the feeding motor.
< Tail gas absorption apparatus >
The tail gas absorption equipment comprises an exhaust pipe, a gas introducing element and an absorption bin. In certain embodiments, the tail gas absorption apparatus further comprises a connecting pipe.
One end of the exhaust pipe is connected with the microwave reaction cavity, and the other end of the exhaust pipe is connected with the air entraining element. In certain embodiments, the exhaust pipes include branch exhaust pipes and a main exhaust pipe. The branch exhaust pipe includes a first vertical portion, a second vertical portion, and a horizontal portion. One end of the first vertical portion is connected to one end of the horizontal portion, and the other end of the horizontal portion is connected to one end of the second vertical portion. One end of the first vertical part, which is far away from the horizontal part, is communicated with the microwave reaction cavity. According to one embodiment of the present invention, an end of the first vertical portion, which is away from the horizontal portion, is disposed in the first opening and is in communication with the microwave reaction chamber. One end of the second vertical part far away from the horizontal part is communicated with the microwave reaction cavity. According to one embodiment of the present invention, an end of the second vertical portion, which is away from the horizontal portion, is disposed in the second opening and is in communication with the microwave reaction chamber. One end of the main exhaust pipe is communicated with the horizontal part. In some embodiments, the main exhaust duct is connected to a middle portion of the horizontal portion, and communicates with the branch exhaust ducts. The other end of the main exhaust pipe is connected with the air entraining element.
The air-entraining element is connected with one end of the exhaust pipe far away from the microwave reaction cavity. The bleed air element is arranged to introduce the exhaust gases into the absorption bin. In some embodiments, the bleed air element is connected to an end of the main exhaust duct remote from the horizontal portion. The bleed air element may be a suction fan.
The absorption bin is connected with the air entraining element. The absorption bin is arranged to contain liquid to be reacted and enable tail gas to react with the liquid to be reacted. This allows the gases produced by the calcination to be absorbed. For example, the gas generated by calcination is carbon dioxide, and the liquid to be reacted in the absorption bin may be a sodium hydroxide solution or ammonia water.
The tail gas absorption apparatus of the present invention may further include a connection pipe. One end of the connecting pipe is connected with the air-entraining element, and the other end of the connecting pipe is connected with the absorption bin.
< Cooling apparatus >
The cooling device comprises a cooling cavity and a cooling water channel. In some embodiments, one or more of a second stirring unit, a second stirring driving device and a recirculating chiller are further included.
The cooling chamber is provided with a product inlet and a product outlet. The product inlet is connected with the microwave reaction cavity. The cooling chamber is configured to cool the rare earth oxide.
The cooling water channel is arranged on the periphery of the cooling cavity. The cooling water channel may be provided with a cooling water inlet. The cooling water channel can be provided with a cooling water outlet.
The cooling apparatus of the present invention may further include a second stirring unit. At least a portion of the second stirring unit is disposed within the cooling chamber. The second stirring unit is arranged to stir the rare earth oxide in the cooling cavity. In some embodiments, a portion of the second stirring unit is disposed within the cooling chamber, and one end of the second stirring unit is disposed outside the cooling chamber. The second stirring unit may rotate in a direction opposite to that of the first stirring unit. The second stirring unit may be a helical stirring paddle.
The cooling apparatus of the present invention may further include a second stirring driving unit. The second stirring driving unit is connected with the second stirring unit. In some embodiments, the second stirring driving unit is connected with one end of the second stirring unit arranged outside the cooling chamber. The second stirring driving unit is arranged to drive the first stirring unit to rotate. The second stirring driving unit is a motor.
The cooling apparatus of the present invention may further comprise a circulation cooling water machine. The circulating cooling water machine is respectively connected with a cooling water inlet on the cooling water channel and a cooling water pipe arranged outside the microwave emitting element. The circulating cooling water machine is configured to supply cooling water to the cooling passage and the cooling water pipe.
Example 1
FIG. 1 is a schematic structural diagram of a rare earth oxide production apparatus according to the present invention. As shown in fig. 1, the rare earth oxide production apparatus of the present embodiment includes a calcination device, an off-gas absorption device, and a cooling device.
The calcining equipment comprises a microwave reaction cavity 11, a microwave emitting element 12, a heat insulation layer 13, a temperature measuring element 14, an air inlet pipe 15, a first stirring unit 16, a first stirring driving unit 17 and a feeding unit.
The microwave reaction chamber 11 contains rare earth carbonate and makes it calcine and decompose into rare earth oxide and tail gas. The microwave reaction chamber 11 may have a cylindrical structure. The microwave reaction chamber 11 may be formed of a wave-transparent heat-insulating material. The microwave reaction cavity 11 is sequentially provided with a temperature rising section, a calcining section and a heat preservation section. This allows the rare earth carbonate to be calcined at different temperatures. The microwave reaction chamber 11 is provided with a feed inlet, a discharge outlet and an air inlet.
The insulating layer 13 is arranged on the periphery of the microwave reaction cavity 11. The insulating layer 13 is provided with a first opening, a second opening and a temperature measuring element opening. The heat preservation layers 13 on the corresponding positions of the temperature rising section, the calcining section and the heat preservation section are respectively provided with at least one temperature measuring element opening.
The microwave emitting element 12 is disposed at the periphery of the microwave reaction chamber 11 and supplies microwave energy to the rare earth carbonate in the microwave reaction chamber 11. The microwave emitting elements 12 are distributed around the microwave reaction chamber 11. A cooling water pipe (not shown) is arranged outside the microwave emitting element 12. The microwave emitting element 12 may be a magnetron.
The temperature measuring element 14 is provided in plurality. The temperature measuring elements 14 are respectively arranged in different temperature measuring element openings and are in contact with the microwave reaction cavity 11. The temperature measuring element 14 measures the temperature of each reaction section of the microwave reaction cavity 11. In this embodiment, the temperature measuring element 14 is a thermocouple.
The gas inlet pipe 15 is connected with the gas inlet and is used for filling gas into the microwave reaction cavity 11. This enables the rare earth carbonate to be calcined in an oxygen-free environment. A flow meter (not shown) is provided in the intake pipe 15. This enables the rate of introduction of gas to be controlled.
A part of the first stirring unit 16 is disposed inside the microwave reaction chamber 11, and one end of the first stirring unit 16 is disposed outside the microwave reaction chamber 11. The first stirring unit 16 stirs the rare earth carbonate in the microwave reaction chamber 11. This can accelerate the reaction of the rare earth carbonate in the microwave reaction chamber 11. The first stirring unit 16 may be a blade stirring paddle.
The first stirring driving unit 17 is connected to one end of the first stirring unit 16 disposed outside the microwave reaction chamber 11, and drives the first stirring unit 16 to rotate. The first agitation drive unit 17 is a motor.
The feeding unit includes a feeding bin 181, a feeder 182, and a feeding motor 183. The feeding bin 181 is connected with the feeding port and used for storing rare earth carbonate. The feeder 182 is connected with the feeding bin 181 and is used for conveying the rare earth carbonate in the feeding bin 181 to the feeding hole. Feeder 182 is a rotary feeder. Feeder 182 has 6 paddles, with the angle between adjacent paddles being 60 °. This can prevent the leakage of the microwave. A feed motor 183 is associated with the feeder 182 and is configured to drive the feeder 182 in operation.
The exhaust gas absorption plant comprises an exhaust pipe, a bleed air element 22, an absorption bin 23 and a connecting pipe 24.
The exhaust pipes include branch exhaust pipes and a main exhaust pipe 212. The branch exhaust pipe includes a first vertical portion 2111, a second vertical portion 2112, and a horizontal portion 2113. One end of the first vertical portion 2111 is connected to one end of the horizontal portion 2113. The other end of horizontal portion 2113 is connected to one end of second vertical portion 2112. An end of the first vertical portion 2111 remote from the horizontal portion 2113 is disposed in the first opening and communicates with the microwave reaction chamber 11. An end of the second vertical portion 2112 remote from the horizontal portion 2113 is disposed in the second opening and communicates with the microwave reaction chamber 11. One end of the main exhaust pipe 212 is connected to the middle portion of the horizontal portion 2113, and communicates with the branch exhaust pipes.
The bleed air element 22 is connected to the end of the main exhaust line 212 remote from the first horizontal portion 2113, which is arranged to introduce the exhaust gases into the absorption bin 23. The bleed air element 22 is a suction fan.
One end of the connecting tube 24 is connected to the bleed air element 22. The absorption chamber 23 is connected to the other end of the connection pipe 24. The absorption bin contains liquid to be reacted and enables tail gas to react with the liquid to be reacted. This allows the gases generated by the calcination of the rare earth carbonate to be absorbed.
The cooling apparatus includes a cooling chamber 31, a cooling water passage 32, a second agitating unit 33, a second agitating driving unit 34, and a circulation cooling water machine (not shown).
The cooling chamber 31 is provided with a product inlet and a product outlet. The product inlet is connected with the discharge hole of the microwave reaction cavity 11. The cooling chamber 31 is arranged to cool the rare earth oxide.
The cooling water passage 32 is provided at the outer periphery of the cooling chamber 31. The cooling water passage 32 is provided with a cooling water inlet and a cooling water outlet.
The circulation cooling water machine is connected to the cooling water inlet and the cooling water pipe, and supplies cooling water to the cooling water passage 32 and the cooling water pipe.
A part of the second stirring unit 33 is disposed in the cooling chamber 31 for stirring the rare earth oxide in the cooling chamber 31. One end of the second agitating unit 33 is disposed outside the cooling chamber 31. The second stirring unit 33 rotates in the opposite direction to the first stirring unit 16. The second stirring unit 33 is a helical stirring paddle.
The second agitating driving unit 34 is connected to an end of the second agitating unit 33 disposed outside the cooling chamber 31 to drive the second agitating unit to rotate. The second agitation drive unit 34 is a motor.
The present invention is not limited to the above-described embodiments, and any variations, modifications, and substitutions which may occur to those skilled in the art may be made without departing from the spirit of the utility model.
Claims (10)
1. A rare earth oxide production apparatus characterized by comprising: calcining equipment and tail gas absorption equipment;
the calcining equipment comprises a microwave reaction cavity and a microwave emitting element; the microwave reaction cavity is used for accommodating rare earth carbonate and calcining and decomposing the rare earth carbonate into rare earth oxide and tail gas, and the microwave emitting element is used for providing microwave energy for the rare earth carbonate in the microwave reaction cavity;
the tail gas absorption equipment comprises an exhaust pipe, an air entraining element and an absorption bin; one end of the exhaust pipe is connected with the microwave reaction cavity, and the other end of the exhaust pipe is connected with the air entraining element; the air-entraining element is connected with the absorption bin and is arranged to introduce the tail gas into the absorption bin; the absorption bin is arranged to contain liquid to be reacted and enable tail gas to react with the liquid to be reacted.
2. The rare earth oxide production apparatus according to claim 1, wherein the exhaust pipe includes a branch exhaust pipe and a main exhaust pipe;
the branch exhaust pipe comprises a first vertical part, a second vertical part and a horizontal part; one end of the first vertical part is connected with one end of the horizontal part, and the other end of the horizontal part is connected with one end of the second vertical part; one end of the first vertical part, which is far away from the horizontal part, is connected with the microwave reaction cavity, and one end of the second vertical part, which is far away from the horizontal part, is connected with the microwave reaction cavity;
one end of the main exhaust pipe is connected with the horizontal part, and the other end of the main exhaust pipe is connected with the air entraining element.
3. The rare earth oxide production apparatus according to claim 1, wherein the off-gas absorbing device further comprises a connecting pipe;
one end of the connecting pipe is connected with the air entraining element, and the other end of the connecting pipe is connected with the absorption bin.
4. The rare earth oxide production apparatus according to claim 2, wherein the calcination device further includes an insulating layer disposed outside the microwave reaction chamber;
the heat-insulating layer is provided with a first opening and a second opening; one end of the first vertical part, which is far away from the horizontal part, is arranged in the first opening and is communicated with the microwave reaction cavity; one end of the second vertical part, which is far away from the horizontal part, is arranged in the second opening and is communicated with the microwave reaction cavity.
5. The rare earth oxide production apparatus according to claim 1, wherein the calcination device further includes a first stirring unit and a first stirring drive unit;
at least one part of the first stirring unit is arranged in the microwave reaction cavity and is used for stirring the rare earth carbonate in the microwave reaction cavity;
the first stirring driving unit is connected with the first stirring unit and is arranged to drive the first stirring unit to rotate.
6. The rare earth oxide production apparatus of claim 5, wherein the calcination device further comprises a temperature measuring element disposed on the microwave reaction chamber and configured to measure a temperature of the microwave reaction chamber;
the microwave reaction cavity is provided with a temperature rising section, a calcining section and a heat preservation section; and at least one temperature measuring element is respectively arranged on the temperature rising section, the calcining section and the heat preservation section.
7. The rare earth oxide production device according to claim 6, wherein the calcining apparatus further comprises a feeding unit and an air inlet pipe, and the microwave reaction chamber is provided with a feeding port and an air inlet;
the feeding unit is connected with the feeding hole and is used for providing rare earth carbonate to the microwave reaction cavity;
the gas inlet pipe is connected with the gas inlet, and the gas inlet pipe is arranged to charge gas into the microwave reaction cavity.
8. The rare earth oxide production apparatus according to claim 7, wherein the feeding unit includes a feeding hopper, a feeder, and a feeding motor;
the feeding bin is connected with the feeding hole and is used for storing rare earth carbonate;
the feeder is connected with the feeding bin and is arranged to convey the rare earth carbonate in the feeding bin to the feeding hole;
the feeding motor is connected with the feeder and is arranged to drive the feeder to operate.
9. The rare earth oxide production apparatus according to claim 8, further comprising a cooling device, wherein a cooling water pipe is provided outside the microwave emitting element;
the cooling device comprises a cooling cavity, the cooling cavity is provided with a product inlet and a product outlet, the product inlet is connected with the microwave reaction cavity, and the cooling cavity is used for cooling the rare earth oxide;
and a cooling water channel is arranged outside the cooling cavity, and a cooling water inlet and a cooling water outlet are arranged on the cooling water channel.
10. The rare earth oxide production apparatus according to claim 9, wherein the cooling device further includes a second stirring unit and a second stirring drive unit;
at least one part of the second stirring unit is arranged in the cooling cavity and is used for stirring the rare earth oxide in the cooling cavity;
the second stirring driving unit is connected with the second stirring unit and is configured to drive the second stirring unit to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122998901.2U CN216321798U (en) | 2021-12-01 | 2021-12-01 | Rare earth oxide production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122998901.2U CN216321798U (en) | 2021-12-01 | 2021-12-01 | Rare earth oxide production device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216321798U true CN216321798U (en) | 2022-04-19 |
Family
ID=81158780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122998901.2U Active CN216321798U (en) | 2021-12-01 | 2021-12-01 | Rare earth oxide production device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216321798U (en) |
-
2021
- 2021-12-01 CN CN202122998901.2U patent/CN216321798U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104180649B (en) | A kind of microwave dynamic high temperature continuous calcining equipment | |
| CN105131985B (en) | Microwave-assisted vacuum horizontal biochar carbonization equipment | |
| CN104215066B (en) | A kind of horizontal tube carbonaceous intermediate apparatus for continous heat treatment | |
| CN104477916B (en) | A kind of calcium carbide production technology and equipments | |
| CN105222582B (en) | A kind of microwave, electric Hybrid Heating high-temperature service | |
| CN216321798U (en) | Rare earth oxide production device | |
| CN104215065B (en) | A kind of single horizontal tube carbonaceous intermediate apparatus for continous heat treatment | |
| CN203928703U (en) | A kind of microwave dynamic high temperature continuous calcining equipment | |
| CN109909509A (en) | A kind of rotary type vacuum hydrogen breaking device | |
| CN205066429U (en) | Microwave, electric hybrid heating high temperature equipment | |
| CN112194166A (en) | Equipment and method for preparing rare earth oxide by conventional-microwave combined calcination | |
| CN212356552U (en) | Popped device of continuous microwave of graphite alkene | |
| CN102948254A (en) | Microwave and radio frequency material processing | |
| CN112607819A (en) | Nuclear industry high-level radioactive waste liquid evaporation-calcination system and evaporation-calcination method | |
| CN104190291A (en) | Continuous microwave heating double-shaft mixer | |
| CN111139099A (en) | Microwave pyrolysis equipment | |
| CN215808510U (en) | Microwave thermal analysis device containing organic waste salt | |
| KR101092889B1 (en) | Continuous firing furnace | |
| CN111926164B (en) | Biomass electricity dual-energy heat treatment furnace | |
| CN211141947U (en) | Continuous solid waste microwave carbonizing device | |
| CN207240560U (en) | A kind of advanced fiber reinforced composites blender | |
| CN215905857U (en) | Graphene microwave method preparation device | |
| CN216481967U (en) | Chemical raw material is with even drying device | |
| CN213771359U (en) | Heating channel of activated carbon production equipment | |
| CN214192598U (en) | Equipment for preparing rare earth oxide by conventional-microwave combined calcination |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |