CN102560558A - 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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- CN102560558A CN102560558A CN201010586959XA CN201010586959A CN102560558A CN 102560558 A CN102560558 A CN 102560558A CN 201010586959X A CN201010586959X A CN 201010586959XA CN 201010586959 A CN201010586959 A CN 201010586959A CN 102560558 A CN102560558 A CN 102560558A
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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 the fused salt electrolysis metallurgical equipment, relate generally to the negative electrode of negative electrode rare earth molten-salt electrolysis groove under a kind of liquid state
Background technology
In the rare earth metal production technique; Fused salt electrolysis is the main working method of single rare earth metal, norium and rare earth alloys, and the trench structure that always rare earth molten-salt electrolysis adopted is last slotting negative electrode and anodic form, and 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 receives gradually in the industry and paying close attention to, and the electrolyzer of negative electrode form obtains research and development under a kind of in recent years liquid state:
A. Chinese patent 200620149620.2 has been announced the liquid cathode electrolyzer of a kind of electrolysis production rare earth metal and alloy thereof; Its negative electrode imports in the electrolyzer thorax from cell body sidepiece or bottom; Be connected with the receptor that is arranged on bottom of electrolytic tank, make the interior liquid metal product of receptor directly become the negative electrode of cell body.
B. Chinese patent 200710120258.5 has been announced a kind of lower cathode rare earth metal electrolyzer and has been adopted 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 compiles on it; The liquid metal liquid level is as cathode surface, and the distance between negative electrode and the anode can be adjusted at any time.
The electrolyzer common characteristic that above-mentioned patent is invented is the bottom that negative electrode is arranged on the electrolyzer thorax, and the negative electrode subduction is in ionogen fused salt liquid bottom, and from the outside power supply of introducing of electrolyzer in the electrolysis production process.
Summary of the invention
The present invention provides the negative electrode of negative electrode rare earth molten-salt electrolysis groove under a kind of liquid state; The negative electrode of this structure can form certain metal bath surface; The ability favorable conductive; Can well negative electrode be fixed on bottom of electrolytic tank, sound construction is not easy to damage, and therefore can well realize down the re metal electrolyzing of cathode construction form.
For reaching above-mentioned goal of the invention; The present invention adopts following technical scheme: the member that is a kind of tungsten composite structure; Both utilized tungsten to be not easy the characteristics of corrosion damage as negative electrode; The molybdenum that utilizes is again processed than tungsten and welding and the better characteristics of conductivity more easily, makes up the molybdenum matter busbar that has processed metal bath surface formation groove, the horizontal side that plays fixed action and introducing electric current.
Technical solution:
Negative electrode rare earth molten-salt electrolysis groove negative electrode comprises the tungsten liner under the liquid state of the present invention, and the molybdenum outer wall is held back plate, the curved plug of molybdenum, structures such as molybdenum thickening plate.
The tungsten liner is that 1～6mm is thick in rolling tungsten plate, does not have the flute profile of sealing through being processed into two, and 1～6mm is thick to be beneficial to deformation processing through rolling tungsten plate, and the course of processing does not adopt the technological process that can cause tungsten intralamellar part grain growth, thereby can improve the life-span of tungsten liner; The molybdenum outer lining is the thick molybdenum plate of 2～10mm; Do not have the flute profile of sealing through being processed into two, two side plates are made the wide horizontal sides of 10～50mm respectively, are used for fixing negative electrode in the horizontal sides wedging bottom of electrolytic tank insulcrete of two side plates; Outer pars intramuralis of molybdenum and tungsten liner fit tightly together; In the groove top position together through some closing-ups, an end of molybdenum outer wall and the curved plug of molybdenum weld together the rectangle cell body of an end opening, it highly is that 5～10mm holds back plate that the other end is burn-on; The long limit of the curved plug of molybdenum is that electric current imports end, and long limit end is riveted with the molybdenum thickening plate or 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 can't be done by too thick plate source mill.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is that Z of the present invention is to view
Fig. 3 is that the A-A of Fig. 2 is to view
Embodiment
The tungsten liner is that 1mm is thick in rolling tungsten plate, does not have wide 106mm outside the flute profile groove that seals, outer high 50mm, long 300mm through being processed into two; The molybdenum outer lining is the thick molybdenum plate of 10mm, does not have the flute profile of sealing through being processed into two, groove inner width 106mm, in high 45mm, length 303mm, two side plates are made the wide horizontal sides of 10mm respectively; At the molybdenum outer lining along 35mm place apart from the bottom; With Φ 3mm niobium metal rivet tungsten groove and molybdenum groove are riveted together, an end of molybdenum groove and the curved plug of molybdenum weld together the rectangle cell body of an end opening, 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 thick 110mm of 6mm strengthens conductive section in long riveted joint in limit; The other end point of the compound groove of tungsten is burn-on and is highly held back plate for the tungsten of 5mm.During use, the bottom insulation plate is the band groove that 112mm is wide, 60mm is high, and the groove of band cross section, groove upper edge 12 * 4mm plays the fixed negative pole effect in the horizontal sides wedging groove on the negative electrode.
The tungsten liner is that 6mm is thick in rolling tungsten plate, does not have wide 200mm outside the flute profile groove that seals, outer high 30mm, long 600mm through being processed into two; The molybdenum outer lining is the thick molybdenum plate of 5mm, does not have the flute profile of sealing through being processed into two, groove inner width 200mm, in high 25mm, length 605mm, two side plates are made the wide horizontal sides of 30mm respectively; At the molybdenum outer lining along 20mm place apart from the bottom; With Φ 3mm niobium metal rivet tungsten groove and molybdenum groove are riveted together, an end of molybdenum groove and the curved plug of molybdenum weld together the rectangle cell body of an end opening, 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 thick 110mm of 6mm strengthens conductive section in long riveted joint in limit; The other end point of the compound groove of tungsten is burn-on and is highly held back plate for the tungsten of 5mm.During use, the bottom insulation plate is the band groove that 220mm is wide, 30mm is high, and band cross section, groove upper edge is the groove of 15 * 6mm, plays the fixed negative pole effect in the horizontal sides wedging groove on the negative electrode.
The tungsten liner is that 4mm is thick in rolling tungsten plate, does not have wide 200mm outside the flute profile groove that seals, outer high 30mm, long 600mm through being processed into two; The molybdenum outer lining is the thick molybdenum plate of 6mm, does not have the flute profile of sealing through being processed into two, groove inner width 200mm, in high 25mm, length 605mm, two side plates are made the wide horizontal sides of 30mm respectively; At the molybdenum outer lining along 20mm place apart from the bottom; With Φ 3mm niobium metal rivet tungsten groove and molybdenum groove are riveted together, an end of molybdenum groove and the curved plug of molybdenum weld together the rectangle cell body of an end opening, 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 thick 110mm of 6mm strengthens conductive section in long riveted joint in limit; The other end point of the compound groove of tungsten is burn-on and is highly held back plate for the tungsten of 5mm.During use, the bottom insulation plate is the band groove that 220mm is wide, 30mm is high, and band cross section, groove upper edge is the groove of 15 * 6mm, plays the fixed negative pole effect in the horizontal sides wedging groove on the negative electrode.
Claims (7)
1. the negative electrode of negative electrode rare earth molten-salt electrolysis groove under the liquid state is characterized in that negative electrode mainly is made up of tungsten liner and molybdenum outer wall.
2. according to the negative electrode of negative electrode rare earth molten-salt electrolysis groove under claims 1 described a kind of liquid state, it is characterized in that: negative electrode also comprises: hold back plate (3), the curved plug of molybdenum (4), molybdenum thickening plate (5).
3. according to the negative electrode of negative electrode rare earth molten-salt electrolysis groove under claims 1 or the 2 described a kind of liquid state, it is characterized in that: said tungsten liner (1) is that the rolling tungsten plate of rectangle of 1～6mm is processed by thickness, and to bend to the cross section through processing be groove shape.
4. the negative electrode of negative electrode rare earth molten-salt electrolysis groove under claims 2 or the 3 described a kind of liquid state; It is characterized in that: said molybdenum outer wall (2) is the thick molybdenum plate of 2～10mm; Do not have the groove shape of sealing through being processed into two, two side plates are made the wide horizontal sides of 10～50mm respectively, and horizontal sides is wedged in the bottom of electrolytic tank insulcrete with fixed negative pole; Molybdenum outer wall (2) is inner to fit tightly with tungsten liner (1); In the groove top position together through some closing-ups, an end of molybdenum outer wall (2) and the curved plug of molybdenum (4) weld together the rectangle cell body of an end opening, the other end is burn-on and is held back plate (3).
5. the negative electrode of negative electrode rare earth molten-salt electrolysis groove under claims 4 described a kind of liquid state is characterized in that: the curved plug of said molybdenum (4) is riveted with molybdenum thickening plate (5) or is welded together.
6. according to the negative electrode of negative electrode rare earth molten-salt electrolysis groove under claims 4 or the 5 described liquid state, it is characterized in that: the described height of holding back plate (3) is lower than the curved plug of tungsten liner (1) molybdenum (4) and is convenient to metal from holding back plate (3) one side inflows to metal collectors.
7. according to the negative electrode of negative electrode rare earth molten-salt electrolysis groove under claims 5 described liquid state, it is characterized in that: described molybdenum thickening plate (5) is reinforced along the long side 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 true CN102560558A (en) | 2012-07-11 |
| CN102560558B CN102560558B (en) | 2014-12-17 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03140491A (en) * | 1989-10-27 | 1991-06-14 | Shin Etsu Chem Co Ltd | Rare earth metal and production of rare earth alloy |
| 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 |
-
2010
- 2010-12-08 CN CN201010586959.XA patent/CN102560558B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03140491A (en) * | 1989-10-27 | 1991-06-14 | Shin Etsu Chem Co Ltd | Rare earth metal and production of rare earth alloy |
| 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》, vol. 38, no. 3, 30 September 2010 (2010-09-30) * |
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Owner name: GRIREM ADVANCED MATERIALS CO., LTD. Free format text: FORMER OWNER: BEIJING CENTRAL INST.OF THE NONFERROUS METAL Effective date: 20130903 Free format text: FORMER OWNER: GRIREM ADVANCED MATERIALS CO., LTD. Effective date: 20130903 |
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