CN105154668A - Device for conducting combination and efficient filter pressing in zinc electrolysis process - Google Patents
Device for conducting combination and efficient filter pressing in zinc electrolysis process Download PDFInfo
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- CN105154668A CN105154668A CN201510396065.7A CN201510396065A CN105154668A CN 105154668 A CN105154668 A CN 105154668A CN 201510396065 A CN201510396065 A CN 201510396065A CN 105154668 A CN105154668 A CN 105154668A
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- steam
- pipe
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- chemical combination
- ring
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000011701 zinc Substances 0.000 title claims abstract description 30
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 30
- 230000008569 process Effects 0.000 title abstract description 12
- 238000005868 electrolysis reaction Methods 0.000 title abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000001914 filtration Methods 0.000 claims description 39
- 239000000126 substance Substances 0.000 claims description 37
- 238000003756 stirring Methods 0.000 claims description 20
- 238000013022 venting Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002893 slag Substances 0.000 abstract description 3
- 238000004090 dissolution Methods 0.000 abstract 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 238000010792 warming Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 15
- 239000007791 liquid phase Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009089 cytolysis Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a device for conducting combination and efficient filter pressing in a zinc electrolysis process. The device comprises an inlet pipe, an outlet pipe, two centrifugal pumps and two pressure filters. A first inlet pipe branch is connected with the outlet pipe through a three-way cock and one centrifugal pump. A second inlet pipe branch is connected with the outlet pipe through the other centrifugal pump and the other three-way cock. A driving gear is arranged between gears of the two three-way cocks and drives the two three-way cocks to rotate and switch simultaneously, and the two three-way cocks are communicated with each other up and down through a middle connecting pipe. The inlet pipe is connected with a zinc solution flow trough of an inverted-cone-shaped bottom structure. The two pressure filters are connected in parallel and then connected with the outlet pipe. The flow trough is connected with a steam heating combination barrel. According to the device, the two three-way cocks are used skillfully, so that the convenient and fast switching operation between the series connection and parallel connection of the centrifugal pumps is achieved, and the filter pressing efficiency is improved. The device has the characteristics that the structure is simple, and the operation is not liable to errors. The inverted-cone-shaped bottom of the flow trough benefits the output of a zinc solution and mineral slag. The steam heating combination barrel skillfully uses a steam dissolution ring formed by a taper face ring and a screen aperture cylinder face ring, so that the dissolution warming effect is improved, and noise disturbance does not exist completely.
Description
Technical field
The present invention relates in a kind of electrolytic zinc technique the device carrying out chemical combination and efficient press filtration.
Background technology
Electrolytic zinc carries out by zinc ore pulverizing, chemical combination, removal of impurities, carries out the hydrometallurgy process of electrolysis after allotment again, and wherein chemical combination is exactly, in chemical combination bucket, zinc ore powder pulp is added the process that sulfuric acid carries out chemical reaction.Chemical combination can obtain solubility zinc sulfate, is convenient to the electrolysis procedure carrying out the later stage.
At present, the chemical combination bucket volume of commercial application can reach hundreds of cubes, needs to add steam to promote the carrying out of combination reaction to chemical combination bucket in chemical combination process, has both realized the refining of electrolytic solution, and has also been conducive to the efficient electrolysis in later stage.
But chemical combination bucket adds steam realizes solution warms, if operate by traditional mode, the whole process adding liquid phase intensification at steam has intense noise and vibration, and operator often produces stronger infrasound injury sense.Therefore, the operator scheme that change conventional vapor adds, reduces noise and vibration, eliminates infrasound interference injury, all significant for protecting laborer and improving Working environment.
Need after chemical combination completes to remove solid slag by press filtration, to obtain the solution needed for electrolysis.Therefore, press filtration is also very important unit step in electrolytic zinc technique.
Press filtration in electrolytic zinc technique, general is all plate and frame(type)filter press, and select impeller pump as filter pressing pump, pressure-filtering process obtains filtrate, filter residue progressively runs up to optimal filling degree in pressure filter simultaneously, carry out respective handling again, finally complete the cyclical operation process of filter residue cleaning, the object of press filtration realizes solid-liquid separation exactly.In the starting stage of press filtration operation, owing to being complete empty in pressure filter, concerning filter pressing pump, the quick large discharge input carrying out less lift is the ideal operation state of now press filtration operation; But increase along with filter cake accumulates rear resistance in pressure filter, when particularly stopping close to press filtration, have peak pressure expanded state, therefore, larger lift can be had to be to best requirement by the press filtration performance of pressure filter in press filtration the second half.
But in press filtration operation, existing impeller pump all cannot adapt to such process automatically, reaches efficient, high-quality ideal operation state.When general impeller pump carries out press filtration operation, be all that the early stage lift of press filtration is lower, but flow is large, makes motor be in overload, especially easily motor damage; To the press filtration middle and later periods, press filtration resistance strengthens rapidly, and the flow quantity of impeller pump reduces rapidly, although at this moment motor is operated in the low power state of underloading, efficiency of press filtering is very low; Although filter pressing pump has H-Max output state, because pressing filtering liquid flow is less, the serviceability of pressure filter cannot be given full play to and increase work efficiency.
Therefore, impeller pump is made to coordinate pressure filter, the press filtration whole process in electrolytic zinc technique is made all to reach ideal operation state, the optimum performance playing press filtration is difficult to realize, if but look for another way, adopt the convenient shifter of two impeller pump series and parallels to complete press filtration work, make it in press filtration in early days by two impeller pump parallel connections, realize fast, less energy-consumption, the efficient press filtration of large discharge; In press filtration, two impeller pumps are connected by latter stage, obtain high-lift transport capacity, after meeting, journey press filtration resistance is large, but still applicable flow can be had to embody efficient press filtration and give full play to the feature of pressure filter performance, so convenient shifter of two impeller pump series and parallels is adopted to break through pressure filtering technique bottleneck in electrolytic zinc technique, reach the ideal operation state of press filtration, there is the actual application value of particularly important.
Summary of the invention
The technical problem to be solved in the present invention overcomes the deficiencies in the prior art exactly, the device carrying out chemical combination and efficient press filtration is provided in a kind of electrolytic zinc technique, this apparatus structure is simple, practical, the convenient switching of series and parallel of two centrifugal pump device can be realized, and chemical combination process is tranquil quick, disturbs without infrasound.
For overcoming the deficiencies in the prior art, the present invention takes following technical scheme:
The device of chemical combination and efficient press filtration is carried out in a kind of electrolytic zinc technique, comprise inlet pipe, go out pipe, two impeller pumps and two pressure filter, it is characterized in that: inlet pipe branches into two pipelines, article one, pipeline is connected pipe through three-way tap with impeller pump, and another pipeline is connected pipe through another impeller pump with another three-way tap; Two three-way taps are equipped with gear driven Spool rotating, be provided with driving toothed gear and drive two three-way taps to rotate switching simultaneously between the gear of two three-way taps, the upper and lower UNICOM of union in two three-way tap warps; Inlet pipe connects zinc solution chute, and chute has the bottom construction of back taper; Connect pipe after two pressure filter parallel connections, two branch roads in parallel are equipped with control valve; Chute connects steam heating chemical combination bucket.
Described steam heating chemical combination bucket comprises staving, motor and step-down gear and stir shaft, and stir shaft inserts in staving, and motor and step-down gear drive stir shaft to rotate, and stir shaft is fixed with Double-layer stirring paddle; Be provided with the steam that taper-face ring and sieve aperture cylinder ring form in the middle part of staving and dissolve ring, vapour pipe front end is fixed on steam and dissolves on ring, and vapour pipe venting port dissolves the inner higher place of ring at steam.
Be provided with spout bottom described staving, spout connects output control valve.
This device is rotated by driven by motor driving toothed gear, can single-power gear-linked stroke, accurately fast switches manipulation, the convenient switching realizing two impeller pump series and parallel structures, the press filtration in electrolytic zinc technique can be made to operate and reach optimum Working; It is fabulous that steam heating chemical combination bucket dissolves temperature rise effect, tranquil quick, than traditional way environmental protection.
Compared with prior art, beneficial effect of the present invention is also:
The optimum working performance reaching impeller pump needed for press filtration in electrolytic zinc technique is switched by the series and parallel of impeller pump; By rationally succinct circuit design and single-power gear-linked stroke, accurately fast switch manipulation, the ingenious series and parallel blocked operation being achieved two impeller pumps by two three-way taps; Compared with the series and parallel pipeline valve shifter of routine, threeway plug valve can greatly reduce the consumption of pipeline and valve, and simplifies the blocked operation of series and parallel, avoids the mistake occurred in common pipe valve system series and parallel handoff procedure; The chute cone end of back taper, be conducive to the outflow of zinc solution; Two pressure filter parallel connections are convenient to wherein in a pressure filter cleaning filter residue process, and another pressure filter still normally can carry out press filtration; Steam heating chemical combination barrel structure is simple, practical, the ingenious steam utilizing taper-face ring and sieve aperture cylinder ring to form dissolves ring, greatly improve the dissolving temperature rise effect of steam, and it is tranquil quick, there is no steam noise, vibration and infrasonic interference completely, be conducive to the Working environment improving laborer, be also conducive to the carrying out promoting combination reaction.
Structure of the present invention is simple, and cost is low, practical, has a extensive future.
Accompanying drawing explanation
Fig. 1 is parallel-connection structure schematic diagram of the present invention.
Fig. 2 is cascaded structure schematic diagram of the present invention.
Fig. 3 is the two dimensional structure schematic diagram of steam heating chemical combination bucket.
In figure, each label represents:
1, inlet pipe; 2, pipe is gone out; 3, middle union; 4, three-way tap; 5, three-way tap; 6, impeller pump; 7, impeller pump; 21, driving toothed gear; 22, gear; 23, gear; 24, zinc solution chute; 30, pressure filter; 41, motor and step-down gear; 42, stir shaft; 43, stirring rake; 44, staving; 45, spout; 46, output control valve; 47, vapour pipe; 48, taper-face ring; 49, sieve aperture cylinder ring; 50, vapour pipe venting port.
Embodiment
[0020] now by reference to the accompanying drawings, the present invention is illustrated further.
The device of chemical combination and efficient press filtration is carried out as shown in Figure 1, Figure 2 and Figure 3 in electrolytic zinc technique, comprise inlet pipe 1, two impeller pumps (6,7), go out pipe 2 and two pressure filter 30, inlet pipe 1 branches into two pipelines, article one, pipeline is connected pipe 2 through three-way tap 4 with impeller pump 7, and another pipeline is connected pipe 2 through another impeller pump 6 with another three-way tap 5; Two three-way taps 4,5 are equipped with gear 22,23 and drive Spool rotating, be provided with driving toothed gear 21 and drive two three-way taps 4,5 to rotate switching simultaneously between the gear 22,23 of two three-way taps, union about 3 UNICOM in two three-way tap 4,5 warps; Inlet pipe 1 connects zinc solution chute 24, and chute 24 has the bottom construction of back taper; Connect pipe 2 after the parallel connection of two pressure filter 30, two branch roads in parallel are equipped with control valve; Chute 24 connects steam heating chemical combination bucket.
Described steam heating chemical combination bucket comprises staving 44, motor and step-down gear 41 and stir shaft 42, and stir shaft 42 inserts in staving 44, and motor and step-down gear 41 drive stir shaft 42 to rotate, and stir shaft 42 are fixed with Double-layer stirring paddle 43; Be provided with the steam that taper-face ring 48 and sieve aperture cylinder ring 49 form in the middle part of staving 44 and dissolve ring, vapour pipe 47 front end is fixed on steam and dissolves on ring, and vapour pipe venting port 50 is at higher place, steam dissolving ring inside.
Be provided with spout 45 bottom described staving 44, spout 45 connects output control valve 46.
The zinc solution chute cone end, is conducive to zinc solution and pulverous slag delivers into pressure filter 30.
Fig. 1 and Fig. 2 is same device different states, wherein driving toothed gear 21 is driven by motor deceleration Stroke Control, drive the gear 22 of union three way cock 4 spool and the gear 23 of union three way cock 5 spool respectively, realize single-power gear-linked, fast switch manipulation.
Fig. 1 is impeller pump 6,7 conveyance fluid in parallel, and the first branch road of inlet pipe 1 is for connecting impeller pump 6, and impeller pump 6 goes out the left end of pipe union three way cock 5, is merged into out pipe 2 from right-hand member; Second branch road of water inlet pipe 1 is enter impeller pump 7 after union three way cock 4, and export through pressurization, be incorporated in out pipe 2, realize two branch road two parallel pumps, carry out large discharge output, middle union 3 is blocking state.
After two three-way taps are operated as shown in Figure 2, first branch road of inlet pipe 1 is for connecting impeller pump 6, the centrifugal left end pumping pipe union three way cock 5, exported by middle union 3 from upper end and import three-way tap 4 lower end, go out to enter impeller pump 7 from three-way tap 4 right-hand member, realize double pump series connection, the liquid carrying out lift superposition exports.Three-way tap 4 left end forms blocking-up to inlet pipe 1, and three-way tap 5 right-hand member realizes blocking isolation to going out pipe 2.
As described above by single-power gear-linked, carry out stroke fast to switch accurately, interlock manipulation two three-way tap combinations, the series and parallel realizing two impeller pumps switches, the system making it to form more rationally can adapt to the efficient press filtration operation in electrolytic zinc technique, meets the requirement of electrolytic zinc industry.
Steam heating chemical combination bucket increases by common chemical combination bucket the steam that taper-face ring 48 that anticorrosion stainless steel makes and sieve aperture cylinder ring 49 form and dissolves ring, and vapour pipe 47 front end is fixed on steam and dissolves on ring, vapour pipe venting port 50 dissolves higher place, ring inside at steam.During work, ore pulp is generally lower than the suitable height of chemical combination bunghole part, and agitator is applicable to rotating speed and rotates, and is promoted downwards by ore pulp by two-layer stirring rake, completes and stirs and effectively prevent ore pulp from sinking to the bottom.
Steam heating chemical combination bucket generally adopts boiler to provide steam, by Valve controlling vapour pipe 47, steam is imported steam ring in the middle part of chemical combination bucket, vapour pipe venting port 50 is arranged in portion on the upper side in taper-face ring 48, steam forms steam ring in taper-face ring 48, steam ring top forms septate heat transfer by taper-face ring 48 makes solution warms, inner by also carrying out high-efficiency heating to solution to the absorption of liquid phase level mass transfer.After a large amount of steam adds, excess steam can be overflowed by sieve aperture cylinder ring 49 dispersing and disintegrating, enters chemical combination bucket microbubble shape and liquid phase effect mass transfer, makes solution warms; When steam flow is larger, steam can overflow into chemical combination bucket internal divergence along membranaceous 49 times by cylinder ring, also fully contacts liquid phase and forms mass transfer and heat up, realize the diffusion of multipath Quick steam by liquid phase scrubbing, reach chemical combination bucket liquid phase and to be rapidly heated object.
Steam overflows cylinder ring 49 in taper-face ring 48 steam with the contact lysis of liquid level pressure, sieve aperture refinement realizes with liquid phase that microbubble shape pressure contacts, cylinder ring contacts with liquid phase pressure once again for 49 times after membranaceous spilling vapor diffusion, improves steam dissolved efficiency.The multiple diffusion way of steam dissolves, and has enough areas to be subject to stirring action, the uniformity of temperature in favourable chemical combination bucket simultaneously, completely eliminates the bad sensation that noise, vibration and infrasound disturb.
Steam heating chemical combination bucket temperature rise effect is fabulous, tranquil quick, than traditional way environmental protection.
Above-mentioned just preferred embodiment of the present invention, not does any pro forma restriction to the present invention.Any those of ordinary skill in the art, when not departing from technical solution of the present invention scope, can utilize the technology contents of above-mentioned announcement to make many possible variations and modification to technical solution of the present invention, or being revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments, equivalent variations and modification, all should drop in the scope of technical solution of the present invention protection.
Claims (3)
1. in an electrolytic zinc technique, carry out the device of chemical combination and efficient press filtration, comprise inlet pipe, go out pipe, two impeller pumps and two pressure filter, it is characterized in that: inlet pipe branches into two pipelines, article one, pipeline is connected pipe through three-way tap with impeller pump, and another pipeline is connected pipe through another impeller pump with another three-way tap; Two three-way taps are equipped with gear driven Spool rotating, be provided with driving toothed gear and drive two three-way taps to rotate switching simultaneously between the gear of two three-way taps, the upper and lower UNICOM of union in two three-way tap warps; Inlet pipe connects zinc solution chute, and chute has the bottom construction of back taper; Connect pipe after two pressure filter parallel connections, two branch roads in parallel are equipped with control valve; Chute connects steam heating chemical combination bucket.
2. carry out the device of chemical combination and efficient press filtration according to claim 1 in electrolytic zinc technique, it is characterized in that: described steam heating chemical combination bucket comprises staving, motor and step-down gear and stir shaft, stir shaft inserts in staving, motor and step-down gear drive stir shaft to rotate, and stir shaft is fixed with Double-layer stirring paddle; Be provided with the steam that taper-face ring and sieve aperture cylinder ring form in the middle part of staving and dissolve ring, vapour pipe front end is fixed on steam and dissolves on ring, and vapour pipe venting port dissolves the inner higher place of ring at steam.
3. carry out the device of chemical combination and efficient press filtration according to claim 2 in electrolytic zinc technique, it is characterized in that: be provided with spout bottom described staving, spout connects output control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510396065.7A CN105154668B (en) | 2015-07-08 | 2015-07-08 | It is electrolysed in zinc technology and carries out chemical combination and the device of efficient press filtration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510396065.7A CN105154668B (en) | 2015-07-08 | 2015-07-08 | It is electrolysed in zinc technology and carries out chemical combination and the device of efficient press filtration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105154668A true CN105154668A (en) | 2015-12-16 |
| CN105154668B CN105154668B (en) | 2018-09-28 |
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ID=54795708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510396065.7A Expired - Fee Related CN105154668B (en) | 2015-07-08 | 2015-07-08 | It is electrolysed in zinc technology and carries out chemical combination and the device of efficient press filtration |
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| Country | Link |
|---|---|
| CN (1) | CN105154668B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87213415U (en) * | 1987-09-17 | 1988-08-10 | 空军油料研究所 | Series/parallel self-priming type centrifugal pump |
| CN101195860A (en) * | 2007-12-20 | 2008-06-11 | 何凯东 | Method and device for washing wet-process zinc metallurgy output slag |
| CN204034360U (en) * | 2014-09-26 | 2014-12-24 | 吉首大学 | Fill rinsing type ore pulp filter press |
| CN204057992U (en) * | 2014-09-12 | 2014-12-31 | 上饶市鼎鑫金属化工有限公司 | Moist chemical synthesis manganese oxide atmospheric oxidation device |
-
2015
- 2015-07-08 CN CN201510396065.7A patent/CN105154668B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87213415U (en) * | 1987-09-17 | 1988-08-10 | 空军油料研究所 | Series/parallel self-priming type centrifugal pump |
| CN101195860A (en) * | 2007-12-20 | 2008-06-11 | 何凯东 | Method and device for washing wet-process zinc metallurgy output slag |
| CN204057992U (en) * | 2014-09-12 | 2014-12-31 | 上饶市鼎鑫金属化工有限公司 | Moist chemical synthesis manganese oxide atmospheric oxidation device |
| CN204034360U (en) * | 2014-09-26 | 2014-12-24 | 吉首大学 | Fill rinsing type ore pulp filter press |
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| Publication number | Publication date |
|---|---|
| CN105154668B (en) | 2018-09-28 |
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Granted publication date: 20180928 |