CN102978665B - A kind of special-shaped tungsten cathode or molybdenum negative electrode - Google Patents
A kind of special-shaped tungsten cathode or molybdenum negative electrode Download PDFInfo
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- CN102978665B CN102978665B CN201210559676.5A CN201210559676A CN102978665B CN 102978665 B CN102978665 B CN 102978665B CN 201210559676 A CN201210559676 A CN 201210559676A CN 102978665 B CN102978665 B CN 102978665B
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Abstract
A kind of tungsten cathode or molybdenum negative electrode of producing rare earth metal and alloying technology for molten salt system electrolysis, it is characterized in that, its cathode bar comprise first end, and opposing the second end, first end and the second end of first end between pars intermedia, first end and pars intermedia between First Transition portion and the second transition part between the second end and pars intermedia; The lateral dimension of pars intermedia is greater than the lateral dimension of first end, the second end; The lateral dimension of first end and the second end equates; The longitudinal size of first end and the second end equates. The present invention is in improving cathode bar service life, also reduce the replacement frequency of cathode bar, improve the continous-stable of electrolysis production, significantly reduce the off-time causing owing to changing negative electrode, avoid because long-time power-off affects product quality, save the consumption of welding accessory and wlding, thereby reduced widely production cost.
Description
Technical field
The present invention relates to a kind of tungsten cathode or molybdenum negative electrode, especially a kind of special-shaped tungsten cathode or molybdenum negative electrode,It is to produce by molten salt system electrolysis tungsten (molybdenum) utmost point using in rare earth metal and alloying technology.
Background technology
At present, produce in rare earth metal and alloying technology in molten salt system electrolysis, generally adopt tungsten(molybdenum) negative electrode, cathode shape is isodiametric cylinder, cathode bar is first by use after welding, negative electrodeAdopt upper hanging type with the connected mode of power supply.
In production, there will be such phenomenon: it is the easiest that cathode bar is exposed near fused salt liquid level one sectionBe corroded, and the welding portion of cathode bar or the segment base close to welding portion originally do not corrode.
Conventionally, in industrial production, in order to improve the utilization rate of cathode bar and to reduce production costs,Often in the time that this part negative electrode is corroded to a certain degree, just cathode bar is removed turn around welding after againUse. Turn around the cathode bar that re-uses of welding while being corroded to again to a certain degree, and this root cathode bar justMust scrap.
By the research to the cathode bar of scrapping, found one extremely important but unheeded for a long timeThe fact, that is exactly, the part being corroded concentrates on the mid portion of cathode bar, and cathode bar twoEnd group is not originally corroded.
Real based on unexpected happening like this, originally can go completely to develop longer service life,The cathode bar that utilization rate is higher. But for a long time, those skilled in the art's prejudice is,Cathode bar is exactly structure and the shape of known fixed, never people overcome such prejudice go research and developmentNovel cathode bar.
Summary of the invention
The object of this invention is to provide a kind of negative electrode, it can fundamentally solve conventional cathode rod and useLife-span is short, and the problem that utilization rate is low is the service life of electrolytic industry production significant prolongation cathode bar,Improve the utilization rate of cathode bar.
For this reason, the invention provides one and produce rare earth metal and alloy for molten salt system electrolysisTungsten cathode in technique or molybdenum negative electrode, is characterized in that, its cathode bar comprises first end, with firstHold between pars intermedia, first end and the pars intermedia between the second opposing end, first end and the second endFirst Transition portion and the second end and pars intermedia between the second transition part; Pars intermedia laterallySize is greater than the lateral dimension of first end, the second end; The lateral dimension of first end and the second end equates;The longitudinal size of first end and the second end equates.
Preferably, cathode bar is the shape of multidiameter.
Preferably, first end, the second end, pars intermedia are cylindric, and First Transition portion and secondTransition part is symmetrical structure, is frustum.
Preferably, First Transition portion and the second transition part are along the circumferential direction symmetrical curved-surface structure.
Preferably, described curved surface is convex surface.
Preferably, described curved-surface structure is the revolving body with rule or irregular shape of generatrix.
Preferably, between described cathode bar and power cathode, be provided with fixture.
Preferably, multiple described cathode bars are connected in parallel to power cathode by gate-controlled switch respectively.
According to the present invention, by suitable the mid portion of cathode bar overstriking, thickened portion is from cathode barTwo ends are equidistant, can effectively strengthen on the one hand the corrosion resistance of cathode bar by overstriking, anotherAspect thickened portion is equidistant from the two ends of cathode bar, all can bring into play overstriking when cathode bar two is usedThe effect of part, like this, just can bring into play the effect of thickened portion to greatest extent, thereby maximumThe utilization rate of the raising cathode bar of limit.
According to the present invention, can extend the service life of cathode bar, improve the utilization rate of cathode bar, fallLow production cost.
The practical efficiency of bar is very low, according to the present invention, by the mid portion of cathode bar is suitableWork as overstriking, can strengthen the corrosion resistance of cathode bar, can effectively improve the service life of cathode bar.
Because the corrosion part of cathode bar is at the mid portion of cathode bar, by by the centre of cathode barSuitably overstriking of part, can improve on the original basis 10%-15% by the utilization rate of bar, thereby haveEffect reduces bar cost.
Test confirms, by by suitable the mid portion of cathode bar overstriking, the weight of cathode bar only increasesAdd approximately 10%, and extended 10%-15% the service life of cathode bar.
In improving cathode bar service life, also reduce the replacement frequency of cathode bar, a sideFace has improved the continous-stable of electrolysis production, has significantly reduced due to stopping that replacing negative electrode causesThe product time, avoid because long-time power-off affects product quality, saved on the other hand welding accessory andThe consumption of wlding, thus production cost reduced widely.
Brief description of the drawings
Fig. 1 adopts according to the structural principle schematic diagram of special-shaped tungsten cathode of the present invention or molybdenum negative electrode.
Detailed description of the invention
For extend cathode bar service life, improve cathode bar utilization rate, reduced cathode barReplacement frequency, reduce owing to changing off-time of causing of negative electrode, in a reality of the present inventionExecute in example planform that can optimized cathode rod.
In another one embodiment of the present invention, can make multiple cathode bar parallel connections.
As shown in Figure 1, the interior installation of electrolytic cell 10 n cathode bar C1, C2, C3 ...,And Cn. Each cathode bar C1, C2, C3 ..., and Cn respectively by special fixture and/Or K1, K2, K3 ..., and Kn be connected in parallel to the negative pole of power supply E. In electrolytic cell 10, holdElectrolyte 11.
Each cathode bar C1, C2, C3 ..., can be consistent with the structure of Cn.
N is more than or equal to 1 natural number. N can be 1, also can reach 3, or reaches 5 or larger.
For example, the cathode bar C3 shown in Fig. 1 comprise first end 1, with first end 1 opposing secondBetween pars intermedia 3, first end 1 and pars intermedia 3 between end 2, first end 1 and the second end 2The second transition part 5 between First Transition portion 4 and the second end 2 and pars intermedia 3.
Cathode bar is the shape of multidiameter generally. First end 1, the second end 2, pars intermedia 3 are roundColumn, and First Transition portion 4 and the second transition part 5 are symmetrical structure, can be frustum.
The diameter of pars intermedia 3 is greater than the diameter of first end 1, the second end 2. First end 1 and the second end2 equal diameters. The length of first end 1 and the second end 2 also equates.
First Transition portion 4 and the second transition part 5 also can be other the along the circumferential direction curved surface of symmetryStructure, for example convex surface, concave surface or there is the revolving body of irregular shape of generatrix.
In a word, according to the present invention, provide a kind of specially-shaped cathode, its technical conceive is: by negative electrodeThe suitable overstriking of mid portion of rod, thickened portion is equidistant from the two ends of cathode bar, passes through on the one handOverstriking can effectively strengthen the corrosion resistance of cathode bar, and thickened portion is from the two ends of cathode bar on the other handEquidistant, when being used, cathode bar two all can bring into play the effect of thickened portion, like this, just can beThe effect of the performance thickened portion of large limit. In production, first cathode bar and homemade negative electrode are connectedFitting welding, then be connected with power cathode by special fixture. When cathode bar one end erodes to necessarilyWhen degree, cathode bar is pulled down, turned around can reuse after welding.
Claims (8)
1. tungsten cathode or a molybdenum negative electrode, is characterized in that, its cathode bar comprises first end, with thePars intermedia, first end and pars intermedia between opposing the second end, first end and the second end in one end itBetween First Transition portion and the second transition part between the second end and pars intermedia; The horizontal stroke of pars intermediaBe greater than the lateral dimension of first end, the second end to size; The lateral dimension phase of first end and the second endDeng; The longitudinal size of first end and the second end is equal, and First Transition portion and the second transition part are along circleThe curved-surface structure of Zhou Fangxiang symmetry; Described curved-surface structure is to have rule or irregular shape of generatrixRevolving body.
2. tungsten cathode as claimed in claim 1 or molybdenum negative electrode, is characterized in that, cathode bar is rankThe shape of ladder axle.
3. tungsten cathode as claimed in claim 1 or 2 or molybdenum negative electrode, is characterized in that, first end,The second end, pars intermedia are cylindric, and First Transition portion and the second transition part are symmetrical structure, areFrustum.
4. tungsten cathode as claimed in claim 1 or molybdenum negative electrode, is characterized in that, described curved surface isConvex surface.
5. tungsten cathode as claimed in claim 1 or molybdenum negative electrode, is characterized in that, described cathode barAnd between power cathode, be provided with gate-controlled switch.
6. tungsten cathode as claimed in claim 1 or molybdenum negative electrode, is characterized in that, described cathode barAnd between power cathode, be provided with fixture.
7. tungsten cathode as claimed in claim 1 or molybdenum negative electrode, is characterized in that, multiple described the moonExtremely rod is connected in parallel to power cathode by gate-controlled switch respectively.
8. tungsten cathode or a molybdenum negative electrode, is characterized in that, comprising: the mid portion of cathode bar addsSlightly, thickened portion is equidistant from the two ends of cathode bar, and the two ends of cathode bar and mid portion are by coneFace connects, in production, first by cathode bar and the welding of negative electrode connector, then by fixture and power supplyNegative pole connects, and in the time that corrode cathode bar one end, cathode bar is pulled down, and turns around to reuse after welding.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210559676.5A CN102978665B (en) | 2012-12-21 | 2012-12-21 | A kind of special-shaped tungsten cathode or molybdenum negative electrode |
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| CN201210559676.5A CN102978665B (en) | 2012-12-21 | 2012-12-21 | A kind of special-shaped tungsten cathode or molybdenum negative electrode |
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| CN102978665A CN102978665A (en) | 2013-03-20 |
| CN102978665B true CN102978665B (en) | 2016-05-18 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107419298B (en) * | 2017-09-21 | 2018-03-27 | 乐山有研稀土新材料有限公司 | Cathodic metal rod and rare earth electrolysis cell |
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| WO2011071151A1 (en) * | 2009-12-10 | 2011-06-16 | 東ソー株式会社 | Method for producing indium metal, molten salt electrolytic cell, and method for purifying low melting point metal |
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| CN202968715U (en) * | 2012-12-21 | 2013-06-05 | 江西稀有金属钨业控股集团有限公司 | Special-shaped tungsten cathode or molybdenum cathode |
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2012
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| US3265606A (en) * | 1961-03-29 | 1966-08-09 | Montedison Spa | Electrolytic cell for preparation of alloys of lead with alkaline metals |
| CN1844467A (en) * | 2006-03-17 | 2006-10-11 | 贵阳铝镁设计研究院 | Method and structure for improving cathode current density of aluminium-electrolytic cell |
| WO2011071151A1 (en) * | 2009-12-10 | 2011-06-16 | 東ソー株式会社 | Method for producing indium metal, molten salt electrolytic cell, and method for purifying low melting point metal |
| CN202011912U (en) * | 2011-03-28 | 2011-10-19 | 赣州晨光稀土新材料股份有限公司 | Tungsten cathode for fused salt electrolysis |
| CN202968715U (en) * | 2012-12-21 | 2013-06-05 | 江西稀有金属钨业控股集团有限公司 | Special-shaped tungsten cathode or molybdenum cathode |
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| CN102978665A (en) | 2013-03-20 |
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Address after: 330046 No. 118 West Beijing Road, Jiangxi, Nanchang Patentee after: JIANGXI TUNGSTEN HOLDING GROUP CO.,LTD. Address before: 330046 No. 118 West Beijing Road, Jiangxi, Nanchang Patentee before: JIANGXI RARE EARTH & RARE METALS TUNGSTEN GROUP HOLDING Co.,Ltd. |
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Effective date of registration: 20220216 Address after: 330013 No. 1089, Jingkai Avenue, economic development zone, Nanchang City, Jiangxi Province Patentee after: JIANGXI GOLDEN CENTURY ADVANCED MATERIALS Co.,Ltd. Address before: 330046 No. 118 West Beijing Road, Jiangxi, Nanchang Patentee before: JIANGXI TUNGSTEN HOLDING GROUP CO.,LTD. |
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