CN1093569C - Application technology for lumpy multiple anode in fluoride system molten salt electrolysis process - Google Patents
Application technology for lumpy multiple anode in fluoride system molten salt electrolysis process Download PDFInfo
- Publication number
- CN1093569C CN1093569C CN99127580A CN99127580A CN1093569C CN 1093569 C CN1093569 C CN 1093569C CN 99127580 A CN99127580 A CN 99127580A CN 99127580 A CN99127580 A CN 99127580A CN 1093569 C CN1093569 C CN 1093569C
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- Prior art keywords
- anode
- lumpy
- rare earth
- molten salt
- fluoride system
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- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 21
- 150000003839 salts Chemical class 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005516 engineering process Methods 0.000 title claims abstract description 12
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 title claims description 13
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 15
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 15
- 239000000956 alloy Substances 0.000 claims abstract description 7
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- 239000007770 graphite material Substances 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012797 qualification Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229910052777 Praseodymium Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 2
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Electrolytic Production Of Metals (AREA)
Abstract
The present invention provides an anode technology for preparing rare earth metal or rare earth alloy, which has the advantages of convenient operation, energy consumption reduction, production cost reduction, product yield increase and qualification rate increase. The present invention is characterized in that a block-shaped multi-anode technology is adopted in a fluorinated system fused salt electrolysis technology for preparing the rare earth metal or the rare earth alloy, an anode plate is fixedly arranged on a boiler cover plate which is used as a conductive plate, anodes can be orderly replaced in the electrolytic process after being dissipated, the whole replacement process does not need to interrupt electrolysis, and the arcing temperature rise is not required after replacement.
Description
The present invention relates to a kind ofly produce in the rare earth metal technology method of using lumpy multiple anode at fluoride system molten salt electrolysis.
At present, produce single rare earth metal or rare earth alloy and adopt fluoride system molten salt electrolysis technology, this technology is to make electrolyzer and anode with graphite material in fluoride system, tungsten bar or molybdenum bar are made negative electrode, adopt upper hanging type tubular anode technology, its weak point is 1, want the starting the arc to heat up after changing anode, causes energy (electric energy, heat energy) loss big, the power consumption height; 2, unstable product quality, qualification rate is low; 3, change the anode difficulty, particularly to big electrolyzer; 4, work efficiency is low, the production cost height.
The purpose of this invention is to provide a kind of method of in fluoride system molten salt electrolysis, using lumpy multiple anode, overcoming the deficiency that above-mentioned technology exists, thereby improve the qualification rate of product conscientiously, reduce production costs.
Technical scheme of the present invention is to produce in rare earth metal or the rare earth alloy technology at fluoride system molten salt electrolysis to use lumpy multiple anode, the anode that assembles (Fig. 5) is fixedly mounted on the stove cover plate (Fig. 7), stove cover plate double as conducting plates, utilize the starting the arc of electric arc machine to heat up and fuse the fused salt for preparing, after treating that fused salt fuses the quantity of regulation and is warmed up to electrolysis temperature, add the rare earth oxide electrolysis and produce rare earth metal or rare earth alloy product, behind the anode consumption, in electrolytic process, change anode successively, and do not need the starting the arc to heat up after changing anode.
Fig. 1 is block anode synoptic diagram (vertical view).
Fig. 2 is Fig. 1 A-A sectional view.
Fig. 3 is positive plate synoptic diagram (vertical view).
Fig. 4 is Fig. 3 B-B sectional view.
Fig. 5 is block anode assembling synoptic diagram.
Fig. 6 is Fig. 5 C-C sectional view.
1-is Φ 10 * 50mm anode screw among Fig. 5 Fig. 6
2-is a positive plate
3-is a block anode
Fig. 7 is stove cover plate synoptic diagram (vertical view).
Fig. 8 is Fig. 7 D-D sectional view.
Fig. 9 is that the anode (4) that assembles is installed connection diagram (vertical view) with stove cover plate.
4-is the anode that assembles among Fig. 9
5-is a stove cover plate
6-is clamping plate
7-is a pin
Embodiments of the invention
With 3KA electrolytic furnace electrolytic metal praseodymium is example
1, prepares
(1) builds stove
(2) molten salt preparation (PrF
3/ LiF=87/13)
(3) anode assembling: utilize anode among Fig. 1 and the positive plate among Fig. 3 to assemble anode according to Fig. 5.
2, electrolysis
Root a tree name Fig. 9 is fixedly mounted on the anode that assembles in four 1 on the stove cover plate (Fig. 7) in the 3KA electrolyzer, stove cover plate double as conducting plates, put into the short carbon piece of a fritter then and be close to anode in stove, insertion is broken the arc carbon-point and is pushed up the carbon piece, beats arc and heats up, beat arc after half an hour, slowly add the fused salt prepare,, clamp out short carbon piece when the fused salt liquid level is added to when being close to anode, continue to beat liquid level and the electrolysis temperature (1000 ℃-1050 ℃) of arc, add rare earth oxide (Pr to regulation
6O
11) carry out electrolysis, electrolysis is tapping casting about 40 minutes, obtains the praseodymium metal after peeling off fused salt, behind the anode consumption, as long as take out pin and clamping plate just can be changed anode, and is to change successively in electrolytic process, does not need starting the arc intensification behind the anode change.
Advantage of the present invention:
Produce in rare earth metal or the rare earth alloy technology at fluoride system molten salt electrolysis and to use lumpy multiple anode, owing to adopt lumpy multiple anode, positive plate is fixedly mounted on the stove cover plate, stove cover plate doubles as conductive plate, behind anode consumption, can in electrolytic process, change successively anode, and not need the starting the arc to heat up behind the anode change, therefore have the following advantages:
1, energy waste little (electric energy, heat energy);
2, change anode conveniently;
3, enhance productivity and output, (reducing about 30%) reduces production costs
4, constant product quality, qualification rate height (product percent of pass of C≤300ppm improves about 35%).
Claims (4)
1, a kind of method of in fluoride system molten salt electrolysis, using lumpy multiple anode, in fluoride system, make electrolyzer and anode with graphite material, tungsten bar or molybdenum bar are made negative electrode, it is characterized in that: adopt the electrolysis of lumpy multiple anode technology to produce rare earth metal or rare earth alloy.
2, according to the described a kind of method of in fluoride system molten salt electrolysis, using lumpy multiple anode of claim 1, it is characterized in that the anode (3) in the lumpy multiple anode is to fit together by the anode screw with positive plate (2), some anodes that assemble are put into and surround a ring-type in the trough, and every anode that assembles utilizes clamping plate (6) and pin (7) to be fixed on the stove cover plate (5).
3, a kind of method of using lumpy multiple anode in fluoride system molten salt electrolysis according to claim 2 is characterized in that stove cover plate (5) double as conducting plates.
4, a kind of method of using lumpy multiple anode in fluoride system molten salt electrolysis according to claim 2 is characterized in that changing anode successively in electrolytic process, and whole replacing process need be interrupted electrolysis, and does not need the starting the arc to heat up after changing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99127580A CN1093569C (en) | 1999-12-24 | 1999-12-24 | Application technology for lumpy multiple anode in fluoride system molten salt electrolysis process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99127580A CN1093569C (en) | 1999-12-24 | 1999-12-24 | Application technology for lumpy multiple anode in fluoride system molten salt electrolysis process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1301885A CN1301885A (en) | 2001-07-04 |
| CN1093569C true CN1093569C (en) | 2002-10-30 |
Family
ID=5284934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99127580A Expired - Fee Related CN1093569C (en) | 1999-12-24 | 1999-12-24 | Application technology for lumpy multiple anode in fluoride system molten salt electrolysis process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1093569C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634817A (en) * | 2011-02-15 | 2012-08-15 | 中国科学院过程工程研究所 | Ionic liquid low-temperature aluminum electrolysis method with glassy carbon as inert anode |
| CN102453930B (en) * | 2011-12-12 | 2015-02-04 | 江西稀有稀土金属钨业集团有限公司 | Graphite anode and replacing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034590A (en) * | 1988-01-25 | 1989-08-09 | 中南工业大学 | Preparation of power-saving carbon anode for aluminum electroextration |
| CN1188162A (en) * | 1997-11-19 | 1998-07-22 | 西北有色金属研究院 | Rare earth molten salt electrolytic ceramic anode and preparation method thereof |
-
1999
- 1999-12-24 CN CN99127580A patent/CN1093569C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034590A (en) * | 1988-01-25 | 1989-08-09 | 中南工业大学 | Preparation of power-saving carbon anode for aluminum electroextration |
| CN1188162A (en) * | 1997-11-19 | 1998-07-22 | 西北有色金属研究院 | Rare earth molten salt electrolytic ceramic anode and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1301885A (en) | 2001-07-04 |
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