CN102634671A - Device for continuously recovering metallic sodium from sodium slag - Google Patents
Device for continuously recovering metallic sodium from sodium slag Download PDFInfo
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- CN102634671A CN102634671A CN201210104245XA CN201210104245A CN102634671A CN 102634671 A CN102634671 A CN 102634671A CN 201210104245X A CN201210104245X A CN 201210104245XA CN 201210104245 A CN201210104245 A CN 201210104245A CN 102634671 A CN102634671 A CN 102634671A
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Abstract
The invention discloses a device for continuously recovering metallic sodium from sodium slag. The device comprises an evaporator provided with an evaporator jacket, a motor, a speed reducer, a spindle, double spiral bands and a screw elevator. Metallic sodium in the sodium slag is continuously converted into vapor to recover by adopting a reduced-pressure evaporation process according to difference of boiling points of components in the sodium slag. A dual-sealing oil cooling structure ensures a vacuum condition inside the evaporator. The material is rotated and agitated by the double spiral bands at a low speed so as to improve the recovery rate of metallic sodium. Simultaneously, waste residue is pushed to achieve continuous slag discharge through the screw elevator. Smoke discharged from the evaporator jacket is directly used for pre-heating and melting the sodium slag and heat preservation of the jacket, thereby achieving comprehensive utilization of heat. The device disclosed by the invention fills a gap of continuously recovering metallic sodium from the sodium slag, is high in purity of recovered metallic sodium, simple in process, easy to industrialize, good in energy-saving effect and easy to popularize.
Description
Technical field
The present invention relates to a kind of device that reclaims sodium Metal 99.5, particularly relate to a kind of device that from the sodium slag, reclaims sodium Metal 99.5 continuously.
Background technology
In industry; Sodium Metal 99.5 mainly adopts salt fusion electrolysis method to produce; For the fusing point that reduces electrolytic solution, improve the electrolysis characteristic; Need add spike salt calcium chloride in the electrolytic solution, bariumchloride forms the ternary electrolyte system, after electrolyzer is isolated sodium Metal 99.5, understand residual a certain amount of electrolytic slag, are commonly called as the sodium slag.The generation of sodium slag is about 3% of sodium Metal 99.5 output, contains the sodium Metal 99.5 of 70-75% in the sodium slag, and about 15% calcium metal, other composition mainly are sodium oxide, quicklime etc.Though contain the sodium Metal 99.5 more than 70% in the sodium slag, owing to contain impurity such as a large amount of sodium oxides, quicklime, the sodium slag is cheap, sales difficulty.The sodium slag belongs to Hazardous wastes in addition, and intractability is big, and inventory time is long also can to bring bigger potential safety hazard.
The fluctuation about about 8000-30000 unit/ton greatly of the market price of sodium Metal 99.5; The potential economic benefit of sodium slag is bigger; Sodium Metal 99.5 is extracted from the sodium slag, not only can increase economic efficiency, also can carry out recycling Hazardous wastes; To eliminate safe hidden trouble and environmental pollution, the recovery technology of exploitation sodium slag has great importance.But, a kind of industrial production device that can realize from the sodium slag, reclaiming sodium Metal 99.5 is not arranged at present as yet.
Summary of the invention
The device that from the sodium slag, reclaims sodium Metal 99.5 continuously that the object of the present invention is to provide and a kind ofly from the sodium slag, reclaim continuously high purity metal sodium, can realize reduction vaporization, increases work efficiency greatly, the production cycle shortens greatly.
The object of the invention is implemented by following technical scheme; A kind of device that from the sodium slag, reclaims sodium Metal 99.5 continuously, it comprises vaporizer, motor, speed reduction unit, main shaft, duplex band and the screw lift(elevator) that is provided with the vaporizer chuck, the below of said speed reduction unit is provided with reducer stent; Said vaporizer chuck bottom is provided with vaporizer chuck inlet mouth; Top is provided with vaporizer chuck air outlet, and said vaporizer top is provided with evaporation feed liquor mouth, sodium vapour outlet and ultrasonic liquidometer, and said vaporizer bottom is provided with the outlet of vaporizer waste residue; Through ultrasonic liquidometer monitoring liquid slag feed liquid position; The control feeding quantity makes liquid level be lower than the lift waste residue outlet of screw lift(elevator), prevents the Liquid Sodium discharge.Said motor output shaft is connected with said input shaft of speed reducer; The output shaft of said speed reduction unit connects through shaft coupling with an end of main shaft; The other end of said main shaft laterally runs through said vaporizer, is provided with tightness system near the said main shaft of said speed reduction unit one side and the outside of said vaporizer sidewall junction; On the said main shaft between said shaft coupling and the said tightness system, be set with chock; Be provided with self-aligning bearing between said chock and the said main shaft; Said chock below is provided with bearing bracket; The axle sleeve that is equivalent to sliding surface bearing is equipped with in end away from the said main shaft of said speed reduction unit one side; Motor is given main shaft through the speed reduction unit and the shaft coupling that are fixed on the reducer stent with transmission of power, and main shaft is by self-aligning bearing, chock, bearing bracket and axle sleeve together support and slowly run.Be provided with end cover between said axle sleeve and the said vaporizer sidewall; Said end cover and said vaporizer sidewall are sealedly and fixedly connected; Said duplex band is fixed on the main shaft in the said vaporizer with spirrillum vertically; Said screw lift(elevator) is vertically placed and is fixed on the said vaporizer outer wall, and said vaporizer waste residue outlet is connected with the lift waste residue import that is located at said screw lift(elevator) bottom, and said screw lift(elevator) top is provided with the outlet of lift waste residue.The duplex band stirring material that slowly runs, heat and mass transfer enhancement fully evaporates sodium Metal 99.5, improves the recovery of sodium Metal 99.5; Promote remaining waste residue simultaneously and discharge, accumulate remaining waste residue in the vaporizer, realize continuous discharging slag in order to avoid cause through screw lift(elevator); The outlet of lift waste residue is arranged at the top of screw lift(elevator), is higher than the liquid level line of vaporizer inside by ultrasonic liquidometer monitoring simultaneously, does not contain liquid metal sodium in the waste residue that guarantees to discharge.
Said tightness system is the dual seal oil cooling structure; Said dual seal oil cooling structure is made up of primary seal and secondary seal; Said primary seal and said secondary seal comprise sealing gland, lock packing, sealing bush and sealing member respectively; Said sealing gland, said lock packing, said sealing bush and said sealing member are sleeved on the said main shaft successively; Said lock packing and said sealing bush place in the said sealing member; The said lock packing of interior side compression of said sealing gland; And be fixedly connected with said sealing member, being provided with the primary seal cylindrical shell between said primary seal and the said secondary seal, the two ends of said primary seal cylindrical shell are connected through flange with the said sealing member of said primary seal and the said sealing member of said secondary seal respectively; The upper and lower of said primary seal cylindrical shell is respectively equipped with primary seal oil-in and primary seal oil outlet; Be provided with said secondary seal cylindrical shell between the said sealing member of said secondary seal and the said vaporizer outer wall, the upper and lower of said secondary seal cylindrical shell is respectively equipped with secondary seal oil-in and secondary seal oil outlet, and the said sealing member on said lock packing top is provided with oil-in.
The tightness system that between main shaft and vaporizer, adopts the dual seal oil cooling structure is in order to prevent the air admission vaporizer, and oxidized metal sodium is realized reduction vaporization, makes that vaporizer is inner to keep certain vacuum tightness.Cooling oil can reduce the temperature of tightness system through the process that the primary seal oil-in injects and the primary seal oil outlet is discharged, and further guarantees the sealing reliability of lock packing.
The device that should from the sodium slag, reclaim sodium Metal 99.5 continuously also includes the chuck valve; Said chuck valve is provided with chuck valve opening for feed, chuck valve discharge port, chuck valve inlet mouth and chuck valve air gate; Said chuck valve discharge port is communicated with said evaporation feed liquor mouth, and said chuck valve inlet mouth is communicated with said vaporizer chuck air outlet.High-temperature flue gas is fed vaporizer chuck heating sodium slag, provide evaporation required heat, the flue gas of discharge directly is used for preheating sodium slag, is used for the insulation of chuck valve simultaneously, prevents that Liquid Sodium from solidifying, and stops up inlet, has realized the comprehensive utilization of heat, conserve energy.
The inwall of said vaporizer chuck is provided with the spiral flow-stopping plate.Said spiral flow-stopping plate alternately is fixed on the inwall of said vaporizer chuck opposite side, and said spiral flow-stopping plate is connected with said vaporizer chuck inwall vertical fixing.On the inwall of said vaporizer chuck, be provided with the spiral flow-stopping plate, make high-temperature flue gas uniform distribution in the vaporizer chuck, vaporizer is heated evenly.
The bottom of said vaporizer is provided with saddle.
The invention has the advantages that: (1) utilizes device of the present invention can realize reduction vaporization; Make the vaporization temperature of sodium reduce significantly; Not only save energy greatly reduces the requirement to evaporator material, saves production cost; Make that simultaneously the recovery purity of sodium is high, evaporation is reclaimed the purity of sodium Metal 99.5 greater than more than 99.9%; (2) adopt the dual seal oil cooling structure, guaranteed sealing effectiveness, kept the inner vacuum condition of vaporizer; (3) use the duplex band stirring material that slowly runs, heat and mass transfer enhancement fully evaporates sodium Metal 99.5, improves the recovery of sodium Metal 99.5; Promote remaining waste residue simultaneously and discharge, accumulate remaining waste residue in the vaporizer, realize continuous discharging slag in order to avoid cause through screw lift(elevator); The waste residue relief outlet is arranged at the top of vaporizer, does not contain liquid metal sodium in the waste residue that guarantees to discharge; (4) high-temperature flue gas is fed vaporizer chuck heating sodium slag, provide evaporation required heat, the flue gas of discharge directly is used for preheating sodium slag, is used for the insulation of chuck valve simultaneously, prevents that the sodium slag from solidifying, and stops up inlet, has realized the comprehensive utilization of heat, conserve energy; (5) utilize device of the present invention can realize continuous dosing, discharging continuously, can realize the continuous recovery of sodium Metal 99.5, working efficiency improves greatly, is beneficial to energy-conservation; (6) adopting device of the present invention from the sodium slag, to reclaim purity is the sodium Metal 99.5 more than 99.9%, not only has economic benefit, also Hazardous wastes sodium slag is carried out recycling, eliminates safe hidden trouble and environmental pollution; (7) utilize the present invention from the sodium slag, to reclaim sodium Metal 99.5 continuously, the purity that reclaims sodium Metal 99.5 is high, and technology is simple, is easy to industriallization, and good energy-conserving effect is easy to promote.
Description of drawings
Fig. 1 is a kind of structure drawing of device that from the sodium slag, reclaims sodium Metal 99.5 continuously.
Fig. 2 is a kind of device left view that from the sodium slag, reclaims sodium Metal 99.5 continuously.
Fig. 3 is the structure iron of dual seal oil cooling structure.
Embodiment: a kind of device that from the sodium slag, reclaims sodium Metal 99.5 continuously comprises vaporizer 1, motor 3, speed reduction unit 4, main shaft 5, the duplex band 6 that is provided with vaporizer chuck 2; Chuck valve 29 and screw lift(elevator) 25; The below of speed reduction unit 4 is provided with reducer stent 34; Vaporizer chuck 2 bottoms are provided with vaporizer chuck inlet mouth 20, and top is provided with vaporizer chuck air outlet 21, and the inwall of vaporizer chuck 2 is provided with spiral flow-stopping plate 40; Spiral flow-stopping plate 40 alternately is fixed on the inwall of vaporizer chuck 2 opposite sides, and spiral flow-stopping plate 40 is connected with vaporizer chuck 2 inwall vertical fixing.On the inwall of vaporizer chuck 2, be provided with spiral flow-stopping plate 40, make high-temperature flue gas uniform distribution in vaporizer chuck 2, vaporizer 1 is heated evenly.Vaporizer 1 top is provided with evaporation feed liquor mouth 22, sodium vapour outlet 23 and ultrasonic liquidometer 26, and vaporizer 1 bottom is provided with vaporizer waste residue outlet 24, and the bottom of vaporizer 1 is provided with saddle 41.Through ultrasonic liquidometer 26 monitoring liquid slag feed liquid positions, the control feeding quantity makes liquid level be lower than the lift waste residue outlet 28 of screw lift(elevator) 25, prevents the Liquid Sodium discharge.Chuck valve 29 is provided with chuck valve opening for feed 30, chuck valve discharge port 31, chuck valve inlet mouth 32 and chuck valve air gate 33, and chuck valve discharge port 31 is communicated with evaporation feed liquor mouth 22, and chuck valve inlet mouth 32 is communicated with vaporizer chuck air outlet 21.High-temperature flue gas is fed vaporizer chuck 2 heating sodium slags, provide evaporation required heat, the flue gas of discharge directly is used for preheating sodium slag, is used for the insulation of chuck valve 29 simultaneously, prevents that Liquid Sodium from solidifying, and stops up inlet, has realized the comprehensive utilization of heat, conserve energy.Motor 3 output shafts are connected with the input shaft of speed reduction unit 4; The output shaft of speed reduction unit 4 connects through shaft coupling 35 with an end of main shaft 5; The other end of main shaft 5 laterally runs through vaporizer 1, is provided with tightness system near the main shaft 5 of speed reduction unit 4 one sides and the outside of vaporizer 1 sidewall junction, on the main shaft between shaft coupling 35 and the tightness system 5, is set with chock 37; Be provided with self-aligning bearing 38 between chock 37 and the main shaft 5, chock 37 belows are provided with bearing bracket 39.The axle sleeve 42 that is equivalent to sliding surface bearing is equipped with in end away from the main shaft 5 of speed reduction unit 4 one sides; Motor 3 is given main shaft 5 with shaft coupling 35 with transmission of power through the speed reduction unit 4 that is fixed on the reducer stent 34, and main shaft 5 is by self-aligning bearing 38, chock 37, bearing bracket 39 and axle sleeve 42 together support and slowly run.Be provided with end cover 36 between axle sleeve 42 and vaporizer 1 sidewall, end cover 36 is sealedly and fixedly connected with vaporizer 1 sidewall.Duplex band 6 is fixed on the main shaft 5 in the vaporizer 1 with spirrillum vertically; Screw lift(elevator) 25 is vertically placed and is fixed on vaporizer 1 outer wall; Vaporizer waste residue outlet 24 is connected with the lift waste residue import 27 that is located at screw lift(elevator) 25 bottoms, and screw lift(elevator) 25 tops are provided with the lift waste residue and export 28.The duplex band 6 stirring material that slowly runs, heat and mass transfer enhancement fully evaporates sodium Metal 99.5, improves the recovery of sodium Metal 99.5; Promote remaining waste residue simultaneously and discharge, accumulate remaining waste residue in the vaporizer 1, realize continuous discharging slag in order to avoid cause through screw lift(elevator) 25; Lift waste residue outlet 28 is arranged at the top of screw lift(elevator) 25, is higher than the liquid level line of vaporizer 1 inside by ultrasonic liquidometer 26 monitorings simultaneously, does not contain liquid metal sodium in the waste residue that guarantees to discharge.
Tightness system is a dual seal oil cooling structure 43; Dual seal oil cooling structure 43 is made up of primary seal 7 and secondary seal 8; Primary seal 7 comprises sealing gland 9, lock packing 10, sealing bush 11 and sealing member 12 respectively with secondary seal 8; Sealing gland 9, lock packing 10, sealing bush 11 and sealing member 12 are sleeved on the main shaft 5 successively; Lock packing 10 places in the sealing member 12 with sealing bush 11, the interior side compression lock packing 10 of sealing gland 9, and be fixedly connected with sealing member 12; Be provided with primary seal cylindrical shell 13 between primary seal 7 and the secondary seal 8; The two ends of primary seal cylindrical shell 13 are connected through flange with the sealing member of the sealing member 12 of primary seal 7 and secondary seal 8 12 respectively, and the upper and lower of primary seal cylindrical shell 13 is respectively equipped with primary seal oil-in 14 and primary seal oil outlet 15, is provided with secondary seal cylindrical shell 16 between the sealing member 12 of secondary seal 8 and vaporizer 1 outer wall; The upper and lower of secondary seal cylindrical shell 16 is respectively equipped with secondary seal oil-in 17 and secondary seal oil outlet 18, and the sealing member 12 on lock packing 10 tops is provided with oil-in 19.The tightness system that between main shaft 5 and vaporizer 1, adopts dual seal oil cooling structure 43 is in order to prevent air admission vaporizer 1, and oxidized metal sodium is realized reduction vaporization, makes that vaporizer 1 is inner to keep certain vacuum tightness.Cooling oil can reduce the temperature of tightness system through the process that primary seal oil-in 14 injects and primary seal oil outlet 15 is discharged, and further guarantees the sealing reliability of lock packing 10.
Principle of work of the present invention: during use, starter motor 3 slowly runs main shaft 5 and duplex band 6; Cooling oil is injected dual seal oil cooling structure 43, guarantee the sealing property of vaporizer 1, thereby guarantee the recovery of sodium; Start screw lift(elevator) 25, in time discharge and reclaim sodium Metal 99.5 solid-state waste residue afterwards; Vaporizer 1 internal pressure is reduced to below the 0.7kPa, reduce the boiling point of sodium Metal 99.5; Feed high-temperature flue gas to vaporizer chuck 2, guarantee that the temperature of vaporizer 1 inner chamber remains on more than 520 ℃, and the hot flue gas of vaporizer chuck air outlet 21 discharges is used for preheating sodium slag, make the liquefaction of sodium slag, make full use of heat, system energy consumption is reduced.The sodium slag that is in a liquid state after the preheating is through in the evaporation feed liquor mouth 22 slow inflow evaporators 1, and the liquid metal sodium carburation by evaporation in the Liquid Sodium slag in the inflow evaporator 1, the sodium steam after the vaporization are discharged the back condensing and recycling; In vaporizer 1; Duplex band 6 slowly runs, and constantly stirs solid, liquid mixed sodium slag, makes Liquid Sodium fully become steam state; And slowly be pushed into vaporizer waste residue outlet 24 by vaporizer 1 tube bottom with staying solid-state waste residue after the sodium evaporation, discharge by the screw lift(elevator) 25 of vertical placement.Through ultrasonic liquidometer 26 monitoring liquid slag feed liquid positions, the control feeding quantity makes liquid level be lower than the lift waste residue outlet 28 of screw lift(elevator) 25, prevents the Liquid Sodium discharge.
Claims (5)
1. device that from the sodium slag, reclaims continuously sodium Metal 99.5; It is characterized in that it comprises vaporizer, motor, speed reduction unit, main shaft, duplex band and the screw lift(elevator) that is provided with the vaporizer chuck, the below of said speed reduction unit is provided with reducer stent; Said vaporizer chuck bottom is provided with vaporizer chuck inlet mouth; Top is provided with vaporizer chuck air outlet, and said vaporizer top is provided with evaporation feed liquor mouth, sodium vapour outlet and ultrasonic liquidometer, and said vaporizer bottom is provided with the outlet of vaporizer waste residue; Said motor output shaft is connected with said input shaft of speed reducer; The output shaft of said speed reduction unit connects through shaft coupling with an end of main shaft, and the other end of said main shaft laterally runs through said vaporizer, is provided with tightness system near the said main shaft of said speed reduction unit one side and the outside of said vaporizer sidewall junction; On the said main shaft between said shaft coupling and the said tightness system, be set with chock; Be provided with self-aligning bearing between said chock and the said main shaft, said chock below is provided with bearing bracket, is with axle sleeve away from the end of the said main shaft of said speed reduction unit one side; Be provided with end cover between said axle sleeve and the said vaporizer sidewall; Said end cover and said vaporizer sidewall are sealedly and fixedly connected, and said duplex band is fixed on the main shaft in the said vaporizer with spirrillum vertically, and said screw lift(elevator) is vertically placed and is fixed on the said vaporizer outer wall; Said vaporizer waste residue outlet is connected with the lift waste residue import that is located at said screw lift(elevator) bottom, and said screw lift(elevator) top is provided with the outlet of lift waste residue.
2. a kind of device that from the sodium slag, reclaims sodium Metal 99.5 continuously according to claim 1; It is characterized in that; Said tightness system is the dual seal oil cooling structure; Said dual seal oil cooling structure is made up of primary seal and secondary seal; Said primary seal and said secondary seal comprise sealing gland, lock packing, sealing bush and sealing member respectively, and said sealing gland, said lock packing, said sealing bush and said sealing member are sleeved on the said main shaft successively, and said lock packing and said sealing bush place in the said sealing member; The said lock packing of interior side compression of said sealing gland; And be fixedly connected with said sealing member, being provided with the primary seal cylindrical shell between said primary seal and the said secondary seal, the two ends of said primary seal cylindrical shell are connected through flange with the said sealing member of said primary seal and the said sealing member of said secondary seal respectively; The upper and lower of said primary seal cylindrical shell is respectively equipped with primary seal oil-in and primary seal oil outlet; Be provided with said secondary seal cylindrical shell between the said sealing member of said secondary seal and the said vaporizer outer wall, the upper and lower of said secondary seal cylindrical shell is respectively equipped with secondary seal oil-in and secondary seal oil outlet, and the said sealing member on said lock packing top is provided with oil-in.
3. a kind of device that from the sodium slag, reclaims sodium Metal 99.5 continuously according to claim 1; It is characterized in that; It also includes the chuck valve; Said chuck valve is provided with chuck valve opening for feed, chuck valve discharge port, chuck valve inlet mouth and chuck valve air gate, and said chuck valve discharge port is communicated with said evaporation feed liquor mouth, and said chuck valve inlet mouth is communicated with said vaporizer chuck air outlet.
4. a kind of device that from the sodium slag, reclaims sodium Metal 99.5 continuously according to claim 1 is characterized in that the inwall of said vaporizer chuck is provided with the spiral flow-stopping plate.
5. a kind of device that from the sodium slag, reclaims sodium Metal 99.5 continuously according to claim 4; It is characterized in that; Said spiral flow-stopping plate alternately is fixed on the inwall of said vaporizer chuck opposite side, and said spiral flow-stopping plate is connected with said vaporizer chuck inwall vertical fixing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210104245XA CN102634671A (en) | 2012-04-11 | 2012-04-11 | Device for continuously recovering metallic sodium from sodium slag |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210104245XA CN102634671A (en) | 2012-04-11 | 2012-04-11 | Device for continuously recovering metallic sodium from sodium slag |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103757435A (en) * | 2014-02-20 | 2014-04-30 | 贵州省产品质量监督检验院 | Method for purifying metallic sodium |
| CN104294054A (en) * | 2014-01-24 | 2015-01-21 | 内蒙古工业大学 | Method and apparatus for recycling metal sodium and calcium from sodium slag or calcium slag |
| CN107190149A (en) * | 2017-07-10 | 2017-09-22 | 江苏南大光电材料股份有限公司 | Metallic sodium retracting device and its method |
| CN107488792A (en) * | 2017-08-10 | 2017-12-19 | 洛阳万基金属钠有限公司 | A kind of two level sodium purifying plant with efficient burning function |
| CN107574318A (en) * | 2017-08-08 | 2018-01-12 | 山东默锐科技有限公司 | A kind of sodium slag method for purifying and separating and its equipment for purifying used |
| CN111363922A (en) * | 2020-02-28 | 2020-07-03 | 内蒙古工业大学 | Vacuum distillation device and process for continuously recovering metal sodium and calcium from sodium slag |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107488792A (en) * | 2017-08-10 | 2017-12-19 | 洛阳万基金属钠有限公司 | A kind of two level sodium purifying plant with efficient burning function |
| CN107488792B (en) * | 2017-08-10 | 2019-05-10 | 洛阳万基金属钠有限公司 | A kind of second level sodium purifying plant with efficient burning function |
| CN111363922A (en) * | 2020-02-28 | 2020-07-03 | 内蒙古工业大学 | Vacuum distillation device and process for continuously recovering metal sodium and calcium from sodium slag |
| CN111363922B (en) * | 2020-02-28 | 2023-10-31 | 内蒙古工业大学 | Vacuum distillation device and process for continuously recycling metal sodium and calcium from sodium slag |
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Application publication date: 20120815 |