CN105332008A - Dsa honeycomb anode - Google Patents
Dsa honeycomb anode Download PDFInfo
- Publication number
- CN105332008A CN105332008A CN201410390023.8A CN201410390023A CN105332008A CN 105332008 A CN105332008 A CN 105332008A CN 201410390023 A CN201410390023 A CN 201410390023A CN 105332008 A CN105332008 A CN 105332008A
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- honeycomb
- dsa
- anode
- orifice plate
- pedestal
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Abstract
The invention discloses a DSA honeycomb anode. The DSA honeycomb anode comprises an electric conduction base frame and a plurality of DSA anode sheets. The electric conduction base frame comprises an electric conduction cross beam and a honeycomb hole plate. The honeycomb hole plate is fixed to the electric conduction cross beam and provided with a plurality of holes. The anode sheets correspond to the holes in position respectively and are arranged on the honeycomb hole plate. The anode sheets are in electric conduction with the honeycomb hole plate. A honeycomb structure unit is formed by the DSA anode sheets, the internal stress of coatings of the DSA anode sheets is lowered through the small superficial area, the phenomenon that the coatings crack and fall off in a layered manner is not likely to happen, and the failure probability of the coatings is lowered. According to the structure, deterioration of the coatings is controlled in the honeycomb structure, the situation that the overall coatings deteriorate and fail due to large-area diffusive spreading can be avoided, and the service life of the anode is prolonged. When the coating of a certain DSA anode sheet is damaged, replacement is convenient. According to the structure, processing difficulty can be lowered. By means of the honeycomb structure formed by the holds of the honeycomb hole plate, the basic electric conduction capacity and electric field distribution evenness are improved.
Description
Technical field
The present invention relates to DSA anode, particularly a kind of DSA anode with honeycomb structure.
Background technology
Existing field of hydrometallurgy, as Mn, Cu, Zn etc. all adopt alloy lead anode electrodeposition to extract target product, there is shortcomings in it.Substituting as lead anode, coating titanium anode (also known as DSA) tool has the following advantages: 1. lower materials consumption rate, can replace that volume is large, the high silicon iron anode of Heavy Weight and lead silver alloy anode.2. higher electro catalytic activity, price comparatively platinum plated anode is cheap, can adopt larger anodic current density and lower electric power output voltage.3. stable size, is conducive to the homogeneity keeping pole span, is conducive to electrolysis and carries out, improve electrolytic efficiency.4. can be processed into different shape (tabular, netted and tubulose etc.).
But also there is following limitation in DSA anode:
First, oxidizable, the coating of titanium substrate easily come off or in coating active ingredient soluble.The usual area of DSA anode for metal smelting is large, there is larger coating internal stress.Internal stress rises along with the increase of area, the phenomenon such as more easily occur coating crack, layering comes off.Once there is this type of situation, oxygen invades substrate, and titanium basic unit generates oxide film.Anode worsens rapidly, coating failure, and worsen scope and speed all uncontrollable.Such as PbO
2coated anode is due to β
2pbO
2intrinsic electrodeposition distortion makes β
2pbO
2can not be combined securely with matrix, in use procedure, Titanium base can produce sull, can make metal titanium passivation, makes conduction difficulty.
Secondly, the absorption of reaction product to electrode surface " poisons " effect: in the production process of electrolytic metal Mn, anode inevitably produces the side reaction of Manganse Dioxide.The coating of this side reaction product to DSA anode has " poisoning " effect.
3rd, titanium as valve metal (valvemetal, common valve metal has Al, Mg, Ti and alloy thereof), as the base material of DSA anode.Once coating starts to worsen, undesirable anode reactant will be produced in a large number, waste electric energy.
Thus, coating titanium anode work-ing life is shorter, easily lost efficacy, and limits it in field of hydrometallurgy, applying especially in the obvious electrolytic etching of metal of side reaction product is produced.
Summary of the invention
The object of this invention is to provide a kind of DSA anode with honeycomb structure, what can solve in above-mentioned prior art problem is one or more.
According to an aspect of the present invention, provide a kind of DSA honeycomb anode, comprise conduction pedestal and multiple DSA anode strip, conduction pedestal comprises Conductive beam and honeycomb orifice plate, honeycomb orifice plate is fixed on Conductive beam, honeycomb orifice plate has multiple hole, and multiple anode strip is corresponding with multiple hole site respectively and be arranged on honeycomb orifice plate, and anode strip and honeycomb orifice plate conduct.
Said structure tool has the following advantages: " honeycomb " structural unit being formed DSA honeycomb anode by multiple DSA anode strip, each unit has less surface-area, significantly can reduce the coating internal stress of DSA anode strip, the phenomenon such as not easily occur coating crack, layering comes off, reduces the probability of coating failure; Contingent coating can be worsened control among unit, the diffusion of large-area diffusivity is less likely to occur and causes coating entirety to worsen to lose efficacy, thus improves anode work-ing life; When the coating damage of a certain DSA anode strip, can change at the scene easily, both cost-saving, convenient production again; Reduce the difficulty of processing of DSA electrode slice, improve the quality of products; In addition, the honeycomb structure that multiple holes of honeycomb orifice plate are formed improves the homogeneity of underlying conductive ability and electric field distribution.
In some embodiments, above-mentioned anode also can comprise multiple pedestal, and honeycomb orifice plate has multiple base aperture, and pedestal is fixed in base aperture, and DSA anode strip is fixed on honeycomb orifice plate by pedestal.Pedestal can conduct electricity and corrosion-resistant, thus, is mounted on honeycomb orifice plate, easy disassembly by pedestal by multiple DSA anode strip.
In some embodiments, pedestal is the screw rod that can conduct electricity, and DSA anode strip has open holes, and screw rod is removably fixed through open holes.Fasteningly adopt nut mode, the mode of the applicable dismounting such as snap.Thus, the replacing of DSA anode strip can be made more convenient.
In some embodiments, the surface of DSA anode strip has ventilative pad pasting.Under there is the environment of anode side reaction product; side reaction product is made to be grown on Reticular breathable pad pasting; coating the poisoning from side reaction product of protection DSA anode strip; conveniently peel off side reaction product; avoid producing infringement, the coating of available protecting DSA anode strip for removing side reaction thing to the coating of DSA anode strip.
In some embodiments, Conductive beam is made of copper, and honeycomb orifice plate is made of aluminum, and honeycomb orifice surface has corrosion resistant protective layer.Honeycomb structure improves the homogeneity of anode underlying conductive ability and electric field distribution.Aluminium has good conductivity, and plasticity-is strong, easily processes, and the price of aluminium is low simultaneously, reduces anode cost of manufacture.Protective layer can protect aluminum honeycomb orifice plate not to be corroded, and eliminates anolyte upper thread corrosion phenomenon.
In some embodiments, protective layer is Teflon coating or epoxy coating.Usually; anode in use; need be immersed among acidic solution for a long time; this protective layer is insulation; both can protect aluminum honeycomb orifice plate, also when the base material of titanium as anode strip, the generation of undesired anode reactant can be suppressed; as Manganse Dioxide side reaction thing in manganese metal electrolysis, thus saves energy.
In some embodiments, screw rod is countersunk head screw rod, and multiple DSA anode strip is arranged on the two sides of described honeycomb orifice plate respectively.Improve honeycomb orifice plate to power on the homogeneity of field distribution.
In some embodiments, pedestal is titanium pedestal.Titanium pedestal can conduct electricity and corrosion-resistant.
In some embodiments, the junction of titanium pedestal and DSA anode strip and honeycomb orifice plate is packaged with silica gel.Prevent acidic solution from infiltrating from the joint of pedestal, DSA anode strip, protective layer and honeycomb orifice plate and corrode honeycomb orifice plate.
In some embodiments, hole and described base aperture are uniformly distributed on described honeycomb orifice plate.Further increase honeycomb orifice plate to power on the homogeneity of field distribution.
Accompanying drawing explanation
Fig. 1 is the conductive substrate structure schematic diagram of the DSA honeycomb anode of an embodiment of the present invention;
Fig. 2 is the DSA anode strip structural representation of the DSA honeycomb anode of an embodiment of the present invention;
Fig. 3 is the pedestal of the DSA honeycomb anode of an embodiment of the present invention, honeycomb orifice plate and DSA anode strip connection diagram;
Fig. 4 is the Facad structure schematic diagram of the DSA honeycomb anode of an embodiment of the present invention;
Fig. 5 is the structure schematic diagram of the DSA honeycomb anode of an embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described in further detail.
Fig. 1 ~ 5 show schematically show the DSA honeycomb anode of a kind of embodiment according to invention.As shown in the figure, DSA honeycomb anode comprises conduction pedestal 1 and multiple DSA anode strip 2.Multiple DSA anode strip 2 be fixed on conduction pedestal 1 on and with conduction pedestal 1 conduct.
Conduction pedestal 1 comprises Conductive beam 11 and honeycomb orifice plate 12.
As shown in Figure 1, honeycomb orifice plate 12 welds with Conductive beam 11 or is threaded to be fixed on Conductive beam 11.Honeycomb orifice plate 12 is made of aluminum.In the present embodiment, honeycomb orifice plate 12 is evenly equipped with orthohexagonal hole 121.The hole 121 of often going is interlaced, and in honeycomb structure, compact construction, saves space.The surface of honeycomb orifice plate 12 has corrosion resistant protective layer, and this protective layer is be sprayed on Teflon coating on honeycomb orifice plate 12 or epoxy coating.Usually, anode in use, need be immersed among acidic solution for a long time, and the honeycomb orifice plate 12 of aluminum directly cannot be exposed to acidic solution and use, and needs fine and close protective layer protection, obtains by spraying Teflon or epoxy coating.This protective layer is insulation, both can protect aluminum honeycomb orifice plate 12, also can, when titanium is as anode strip base material, suppress the anode reactant undesirably occurred to produce, as Manganse Dioxide side reaction thing in manganese metal electrolysis, and saves energy.Honeycomb orifice plate 12 is also evenly equipped with multiple base aperture 122.
Hole 121 in other embodiments on multiple honeycomb orifice plate 12 can also form latticed or other form.
Conductive beam 11 is such as the T1 copper bar of 40*8mm.The conduction pedestal 1 be made up of copper, aluminium makes full use of the good conductor of electricity electric property of copper, aluminium.The honeycomb structure that uniform hole is formed improves the homogeneity of anode underlying conductive ability and electric field distribution.
As shown in Figure 2, the middle part punching press of DSA anode strip 2 has depressed part 21, and shape and the size of the shape of depressed part 21 and size and honeycomb are corresponding, are just stuck in hole 121 to make the depressed part 21 of DSA anode strip 2.Hole 121 is regular hexagon in the present embodiment, and depressed part 21 shape is also regular hexagon.DSA anode strip 2 also has open holes 22.Open holes 22 is corresponding with base aperture 122 position on honeycomb orifice plate 12.The surface of DSA anode strip 2 has Reticular breathable pad pasting, and this is netted can be PTFE (tetrafluoroethylene) film.Under there is the environment of anode side reaction product; the Reticular breathable pad pasting on DSA anode strip 2 surface makes side reaction product be grown on Reticular breathable pad pasting; coating the poisoning from side reaction product of protection DSA anode strip 2; conveniently peel off side reaction product; avoid producing infringement for removing side reaction thing to the coating of DSA anode strip 2, thus the coating of available protecting DSA anode strip 2.DSA anode strip 2 can be other as netted, sheet or poroid structure.The shape of DSA anode strip 2 can also be square, circular, the shape such as Polygons or rhombus.
DSA honeycomb anode of the present invention has multiple DSA anode strip 2.The stability of DSA anode strip 2 determines result of use and the life-span of anode.First, less anode surface area significantly can reduce the coating internal stress of DSA anode strip 2, the phenomenon such as not easily occur coating crack, layering comes off, and reduces the probability of coating failure.Secondly, can contingent coating deteriorating course be controlled among unit individuality, can not the diffusivity diffusion of occurrence of large-area, cause coating entirety to worsen and lost efficacy, thus improve anode work-ing life.3rd, when the coating damage of a certain DSA anode strip 2, can change at the scene easily, both cost-saving, convenient production again.4th, reduce the difficulty of processing of DSA anode strip 2, improve the quality of products.
As shown in Figure 3, DSA honeycomb anode also comprises pedestal 3.Pedestal 3 is for being welded in the screw rod of the base aperture 122 on honeycomb orifice plate 12.Can also adopt double end titanium screw rod, therefore can install DSA anode strip 2 on the square two sides of honeycomb orifice plate 12, make the conductive area on the positive and negative two sides of honeycomb orifice plate 12 identical, conduction evenly.As shown in Figure 4, be the schematic diagram of the odd number perform hole 121 place installation DSA anode strip 2 of honeycomb orifice plate 12, for the purpose of showing and knowing, the even number perform hole 121 of honeycomb orifice plate 12 is not shown.As shown in Figure 5, be the schematic diagram of the even number perform hole 121 place installation DSA anode strip 2 of honeycomb orifice plate 12, for the purpose of showing and knowing, the odd number perform hole 121 of honeycomb orifice plate 12 is not shown.Double threaded screw is passed the open holes 22 of DSA anode strip 2 and is arranged on double threaded screw by DSA anode strip 2 by nut 4.In order to improve the conductive capability of screw rod, the surface of screw rod can also be made to have layer gold.Titanium pedestal can conduct electricity and corrosion-resistant.Like this, DSA anode strip 2, pedestal 3 form conductive path.After installing, coat silica gel packaging at the joint of each several part, can prevent acidic solution from infiltrating from the joint of the screw rod 4 pedestal 3, DSA anode strip 2, protective layer and honeycomb orifice plate 12 and corrode aluminium honeycomb orifice plate 12.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (10)
1.DSA honeycomb anode, it is characterized in that: comprise conduction pedestal and multiple DSA anode strip, described conduction pedestal comprises Conductive beam and honeycomb orifice plate, described honeycomb orifice plate is fixed on described Conductive beam, described honeycomb orifice plate has multiple hole, described multiple anode strip is corresponding with described multiple hole site respectively and be arranged on described honeycomb orifice plate, and described anode strip and described honeycomb orifice plate conduct.
2. DSA honeycomb anode according to claim 1, it is characterized in that: also comprise multiple pedestal, described honeycomb orifice plate has multiple base aperture, and described pedestal is fixed in described base aperture, and described DSA anode strip is fixed on described honeycomb orifice plate by described pedestal.
3. DSA honeycomb anode according to claim 2, it is characterized in that: described pedestal is the screw rod that can conduct electricity, described DSA anode strip has open holes, and described screw rod is fixed through described open holes.
4. the DSA honeycomb anode according to any one of claims 1 to 3, is characterized in that: the surface of described DSA anode strip has ventilative pad pasting.
5. DSA honeycomb anode according to claim 4, is characterized in that: described Conductive beam is made of copper, and described honeycomb orifice plate is made of aluminum, and described aluminum honeycomb orifice surface has corrosion resistant protective layer.
6. DSA honeycomb anode according to claim 5, is characterized in that: described protective layer is Teflon coating or epoxy coating.
7. DSA honeycomb anode according to claim 6, it is characterized in that: described screw rod is countersunk head screw rod, described multiple DSA anode strip is arranged on the two sides of described honeycomb orifice plate respectively.
8. DSA honeycomb anode according to claim 7, is characterized in that: described pedestal is titanium pedestal.
9. DSA honeycomb anode according to claim 8, is characterized in that: the junction of described titanium pedestal and described DSA anode strip and described honeycomb orifice plate is packaged with silica gel.
10. DSA honeycomb anode according to claim 9, is characterized in that: described hole and described base aperture are uniformly distributed on described honeycomb orifice plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410390023.8A CN105332008A (en) | 2014-08-08 | 2014-08-08 | Dsa honeycomb anode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410390023.8A CN105332008A (en) | 2014-08-08 | 2014-08-08 | Dsa honeycomb anode |
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| CN105332008A true CN105332008A (en) | 2016-02-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106757177A (en) * | 2016-12-12 | 2017-05-31 | 株洲冶炼集团股份有限公司 | A kind of preparation method of the anti-corrosion zinc cathode aluminum plate of band coating |
| CN112255288A (en) * | 2020-10-09 | 2021-01-22 | 泉州师范学院 | DSA anode electrochemical performance testing device |
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| CN103668342A (en) * | 2013-11-29 | 2014-03-26 | 中南大学 | Titanium-based composite anode for manganese electrolysis and preparation method of titanium-based composite anode |
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| US5009763A (en) * | 1989-04-24 | 1991-04-23 | Advanced Technologies Management, Inc. | Honeycomb solid oxide electrolytic cell assembly and method |
| CN101321934A (en) * | 2005-12-05 | 2008-12-10 | 日本碍子株式会社 | Honeycomb structure body and method of producing the same |
| CN1974859A (en) * | 2006-11-14 | 2007-06-06 | 永康市民泰钛业科技有限公司 | Titanium alloy anode for electrolyzing manganese dioxide and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106757177A (en) * | 2016-12-12 | 2017-05-31 | 株洲冶炼集团股份有限公司 | A kind of preparation method of the anti-corrosion zinc cathode aluminum plate of band coating |
| CN106757177B (en) * | 2016-12-12 | 2018-08-31 | 株洲冶炼集团股份有限公司 | A kind of preparation method of band coating anti-corrosion zinc cathode aluminum plate |
| CN112255288A (en) * | 2020-10-09 | 2021-01-22 | 泉州师范学院 | DSA anode electrochemical performance testing device |
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