CN102560558B - Cathode of electrolytic bath for liquid lower-cathode rare earth molten salt - Google Patents
Cathode of electrolytic bath for liquid lower-cathode rare earth molten salt Download PDFInfo
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- CN102560558B CN102560558B CN201010586959.XA CN201010586959A CN102560558B CN 102560558 B CN102560558 B CN 102560558B CN 201010586959 A CN201010586959 A CN 201010586959A CN 102560558 B CN102560558 B CN 102560558B
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Abstract
A cathode of an electrolytic bath for liquid lower-cathode rare earth molten salt comprises a lining (1), an outer molybdenum wall (2), an intercepting plate (3), a bent molybdenum plug (4) and a thickened molybdenum plate (5). The cathode is applicable to the electrolytic bath for the liquid lower-cathode rare earth molten salt; and the cathode is of a tungsten-molybdenum composite structure provided with a liquid metal surface forming groove and a current out-leading structure. The cathode of the structure can allow the forming of a certain liquid metal surface, conduct electricity well and be nicely fixed at the bottom of the electrolytic bath, and the structure is firm and can not be damaged easily, therefore the electrolyzation to the rare earth metal of the lower-cathode structure can be well realized.
Description
Technical field
The invention belongs to fused salt electrolysis metallurgical equipment, relate generally to a kind of negative electrode of bath for liquid lower-cathode rare earth molten salt
Background technology
In rare earth metal production technique, fused salt electrolysis is the main production process of single rare earth metal, norium and rare earth alloys, the trench structure that always rare earth molten-salt electrolysis adopts is the form of upper slotting negative electrode and anode, rare earth metal is as the grand strategy resource of China, its demand is increasing, along with production-scale expansion, the improvement of trench structure is paid close attention in the industry gradually, and under a kind of liquid state, the electrolyzer of cathode form is researched and developed in recent years:
A. Chinese patent 200620149620.2 discloses the liquid cathode electrolyzer of a kind of electrolysis production rare earth metal and alloy thereof, its negative electrode imports in electrolyzer thorax from cell body sidepiece or bottom, be connected with the receptor being arranged on bottom of electrolytic tank, make the liquid metal product in receptor directly become the negative electrode of cell body.
B. Chinese patent 200710120258.5 discloses a kind of lower cathode rare earth metal electrolyzer and adopts the electrolysis process of this electrolyzer, it is characterized in that negative electrode is arranged on bottom of electrolytic tank, single or the hybrid metal that electrolysis goes out collects on it, liquid metal liquid level is as cathode surface, and the distance between negative electrode and anode can adjust at any time.
The common feature of the electrolyzer invented of above-mentioned patent is the bottom that negative electrode is arranged on electrolyzer thorax, and in electrolysis production process, negative electrode subduction is in ionogen fused salt liquid bottom, and introduces power supply from electrolyzer outside.
Summary of the invention
The invention provides a kind of negative electrode of bath for liquid lower-cathode rare earth molten salt, the negative electrode of this structure can form certain metal bath surface, conduction that can be good, well negative electrode can be fixed on bottom of electrolytic tank, sound construction is not easy to damage, and therefore well can realize the re metal electrolyzing of lower cathode construction form.
For reaching above-mentioned goal of the invention, the present invention is by the following technical solutions: the component being a kind of tungsten composite structure, both make use of tungsten is not easy corrosion damage feature as negative electrode, the molybdenum utilized again is easier than tungsten to be processed and welds and the better feature of conductivity, builds the molybdenum matter busbar having processed metal bath surface and formed groove, play the horizontal side of fixed action and introducing electric current.
Technical solution:
Bath for liquid lower-cathode rare earth molten salt negative electrode of the present invention, comprises tungsten liner, and molybdenum outer wall, retains plate, the curved plug of molybdenum, the structures such as molybdenum thickening plate.
Tungsten liner is the thick tungsten plate through rolling of 1 ~ 6mm, and through being processed into the flute profile of two without sealing, the thick tungsten plate through rolling of 1 ~ 6mm is beneficial to deformation processing, and the course of processing does not adopt the technological process that can cause tungsten intralamellar part grain growth, thus can improve the life-span of tungsten liner, molybdenum outer lining is the molybdenum plate that 2 ~ 10mm is thick, through being processed into the flute profile of two without sealing, the wide horizontal sides of 10 ~ 50mm made respectively by two side plates, for fixed negative pole in the horizontal sides wedging bottom of electrolytic tank insulcrete of two side plates, together with the outer pars intramuralis of molybdenum fits tightly with tungsten liner, in groove top position by some closing-up together, one end of molybdenum outer wall and the curved plug of molybdenum weld together the rectangle cell body of one end open, it is highly that 5 ~ 10mm retains plate that the other end is burn-on, the long limit of the curved plug of molybdenum is that electric current imports end, long limit end molybdenum thickening plate is riveted or is welded together to strengthen conductive section.The thickness of tungsten plate and molybdenum plate is because material melting point is high and very crisp, and deformation processing and welding cannot be done by too thick plate source mill.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Fig. 2 is Z-direction view of the present invention
Fig. 3 is the A-A direction view of Fig. 2
Embodiment
Embodiment 1
Tungsten liner is the thick tungsten plate through rolling of 1mm, through being processed into the flute profile groove outer wide 106mm of two without sealing, outer high 50mm, long 300mm; Molybdenum outer lining is the molybdenum plate that 10mm is thick, and through being processed into the flute profile of two without sealing, groove inner width 106mm, interior high 45mm, length 303mm, the wide horizontal sides of 10mm made respectively by two side plates; At molybdenum outer lining along distance 35mm place, bottom, with Φ 3mm niobium metal rivet, tungsten groove and molybdenum groove are riveted together, one end of molybdenum groove and the curved plug of molybdenum weld together the rectangle cell body of one end open, molybdenum elbow minor face 50mm, long limit is 200mm, plate thickness is 4mm, the wide 110mm of plate, and the wide molybdenum plate of the upper thick 110mm of 6mm of one, long limit riveted joint strengthens conductive section; The other end point of tungsten composite slot is burn-on highly for the tungsten of 5mm retains plate.During use, bottom insulation plate is the groove that band 112mm is wide, 60mm is high, along the groove of band cross section 12 × 4mm on groove, plays fixed negative pole effect in the horizontal sides wedging groove on negative electrode.
Embodiment 2
Tungsten liner is the thick tungsten plate through rolling of 6mm, through being processed into the flute profile groove outer wide 200mm of two without sealing, outer high 30mm, long 600mm; Molybdenum outer lining is the molybdenum plate that 5mm is thick, and through being processed into the flute profile of two without sealing, groove inner width 200mm, interior high 25mm, length 605mm, the wide horizontal sides of 30mm made respectively by two side plates; At molybdenum outer lining along distance 20mm place, bottom, with Φ 3mm niobium metal rivet, tungsten groove and molybdenum groove are riveted together, one end of molybdenum groove and the curved plug of molybdenum weld together the rectangle cell body of one end open, molybdenum elbow minor face 50mm, long limit is 200mm, plate thickness is 4mm, the wide 220mm of plate, and the wide molybdenum plate of the upper thick 110mm of 6mm of one, long limit riveted joint strengthens conductive section; The other end point of tungsten composite slot is burn-on highly for the tungsten of 5mm retains plate.During use, bottom insulation plate is the groove that band 220mm is wide, 30mm is high, along being with cross section to be the groove of 15 × 6mm on groove, plays fixed negative pole effect in the horizontal sides wedging groove on negative electrode.
Embodiment 3
Tungsten liner is the thick tungsten plate through rolling of 4mm, through being processed into the flute profile groove outer wide 200mm of two without sealing, outer high 30mm, long 600mm; Molybdenum outer lining is the molybdenum plate that 6mm is thick, and through being processed into the flute profile of two without sealing, groove inner width 200mm, interior high 25mm, length 605mm, the wide horizontal sides of 30mm made respectively by two side plates; At molybdenum outer lining along distance 20mm place, bottom, with Φ 3mm niobium metal rivet, tungsten groove and molybdenum groove are riveted together, one end of molybdenum groove and the curved plug of molybdenum weld together the rectangle cell body of one end open, molybdenum elbow minor face 50mm, long limit is 200mm, plate thickness is 4mm, the wide 220mm of plate, and the wide molybdenum plate of the upper thick 110mm of 6mm of one, long limit riveted joint strengthens conductive section; The other end point of tungsten composite slot is burn-on highly for the tungsten of 5mm retains plate.During use, bottom insulation plate is the groove that band 220mm is wide, 30mm is high, along being with cross section to be the groove of 15 × 6mm on groove, plays fixed negative pole effect in the horizontal sides wedging groove on negative electrode.
Claims (6)
1. a negative electrode for bath for liquid lower-cathode rare earth molten salt, is characterized in that: negative electrode is primarily of tungsten liner (1) and molybdenum outer wall (2) composition; Negative electrode also comprises: retain plate (3), the curved plug of molybdenum (4), molybdenum thickening plate (5); Described tungsten liner (1) by tungsten plate through be processed into two without sealing groove type; Described molybdenum outer wall (2) by molybdenum plate through be processed into two without sealing groove type; Molybdenum outer wall (2) is inner to be fitted tightly with tungsten liner (1), in groove top position by some closing-up together, one end of molybdenum outer wall (2) and the curved plug of molybdenum (4) weld together the rectangle cell body of one end open, the other end is burn-on and one is retained plate (3).
2. the negative electrode of bath for liquid lower-cathode rare earth molten salt according to claim 1, is characterized in that: the thickness of described tungsten plate is 1 ~ 6mm.
3. the negative electrode of bath for liquid lower-cathode rare earth molten salt according to claim 1 and 2, it is characterized in that: the thickness of described molybdenum plate is 2 ~ 10mm, the wide horizontal sides of 10 ~ 50mm made respectively by two side plates of described molybdenum outer wall (2), with fixed negative pole in horizontal sides wedging bottom of electrolytic tank insulcrete.
4. the negative electrode of bath for liquid lower-cathode rare earth molten salt according to claim 3, is characterized in that: the curved plug of described molybdenum (4) and molybdenum thickening plate (5) are riveted or weld together.
5. the negative electrode of bath for liquid lower-cathode rare earth molten salt according to claim 3, is characterized in that: described in retain plate (3) height be convenient to metal flow into metal collectors from retaining plate (3) side lower than tungsten liner (1), the curved plug of molybdenum (4).
6. the negative electrode of bath for liquid lower-cathode rare earth molten salt according to claim 4, is characterized in that: described molybdenum thickening plate (5) is reinforced along the upper edge direction of the curved plug of molybdenum (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010586959.XA CN102560558B (en) | 2010-12-08 | 2010-12-08 | Cathode of electrolytic bath for liquid lower-cathode rare earth molten salt |
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| CN201010586959.XA CN102560558B (en) | 2010-12-08 | 2010-12-08 | Cathode of electrolytic bath for liquid lower-cathode rare earth molten salt |
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| CN102560558A CN102560558A (en) | 2012-07-11 |
| CN102560558B true CN102560558B (en) | 2014-12-17 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1837408A (en) * | 2005-02-27 | 2006-09-27 | 高德金 | A novel electro-conductive liner for cathode of aluminium-electrolytic cell |
| CN200952043Y (en) * | 2006-09-27 | 2007-09-26 | 任永红 | Liquid cathode electrolytic tank for electrolytic production rare earth metal and alloy thereof |
| CN101368282A (en) * | 2007-08-14 | 2009-02-18 | 北京有色金属研究总院 | Lower cathode rare earth metal electrolytic tank and electrolysis technique adopting the same |
| CN101805914A (en) * | 2010-04-30 | 2010-08-18 | 内蒙古科技大学 | Bottom cathode diversion type rare earth electrolysis cell |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0713314B2 (en) * | 1989-10-27 | 1995-02-15 | 信越化学工業株式会社 | Method for producing rare earth metal and rare earth alloy |
-
2010
- 2010-12-08 CN CN201010586959.XA patent/CN102560558B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1837408A (en) * | 2005-02-27 | 2006-09-27 | 高德金 | A novel electro-conductive liner for cathode of aluminium-electrolytic cell |
| CN200952043Y (en) * | 2006-09-27 | 2007-09-26 | 任永红 | Liquid cathode electrolytic tank for electrolytic production rare earth metal and alloy thereof |
| CN101368282A (en) * | 2007-08-14 | 2009-02-18 | 北京有色金属研究总院 | Lower cathode rare earth metal electrolytic tank and electrolysis technique adopting the same |
| CN101805914A (en) * | 2010-04-30 | 2010-08-18 | 内蒙古科技大学 | Bottom cathode diversion type rare earth electrolysis cell |
Non-Patent Citations (1)
| Title |
|---|
| 贾根贵,李昌林,孙东亚,张太康,吕莹.熔盐电解稀土用钨电极的制备工艺研究.《稀有金属与硬质合金》.2010,第38卷(第3期),全文. * |
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