US2755241A - Electrowinning of manganese - Google Patents
Electrowinning of manganese Download PDFInfo
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- US2755241A US2755241A US301382A US30138252A US2755241A US 2755241 A US2755241 A US 2755241A US 301382 A US301382 A US 301382A US 30138252 A US30138252 A US 30138252A US 2755241 A US2755241 A US 2755241A
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- US
- United States
- Prior art keywords
- manganese
- per cent
- cathode
- electrowinning
- cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims description 42
- 239000011572 manganese Substances 0.000 title claims description 38
- 229910052748 manganese Inorganic materials 0.000 title claims description 32
- 238000005363 electrowinning Methods 0.000 title claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- 238000000151 deposition Methods 0.000 claims description 12
- 239000007864 aqueous solution Substances 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 6
- 229910001778 ammonium mineral Chemical class 0.000 claims description 6
- 230000008021 deposition Effects 0.000 claims description 6
- 229910001655 manganese mineral Inorganic materials 0.000 claims description 6
- 239000011733 molybdenum Substances 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 229910052804 chromium Inorganic materials 0.000 description 8
- 239000011651 chromium Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 6
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052758 niobium Inorganic materials 0.000 description 3
- 239000010955 niobium Substances 0.000 description 3
- KIEOKOFEPABQKJ-UHFFFAOYSA-N sodium dichromate Chemical compound [Na+].[Na+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KIEOKOFEPABQKJ-UHFFFAOYSA-N 0.000 description 3
- 229910052715 tantalum Inorganic materials 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- RVKFQAJIXCZXQY-CBZIJGRNSA-N [(8r,9s,13s,14s)-13-methyl-17-oxo-7,8,9,11,12,14,15,16-octahydro-6h-cyclopenta[a]phenanthren-3-yl] sulfamate Chemical compound NS(=O)(=O)OC1=CC=C2[C@H]3CC[C@](C)(C(CC4)=O)[C@@H]4[C@@H]3CCC2=C1 RVKFQAJIXCZXQY-CBZIJGRNSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 239000001166 ammonium sulphate Substances 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010960 commercial process Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Chemical compound CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 235000010269 sulphur dioxide Nutrition 0.000 description 1
- 239000004291 sulphur dioxide Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/06—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese
Definitions
- the present invention relates to cathodes for use in the electrowinning of manganese from aqueous solutions and more particularly to a method for the preparation and use of such cathodes.
- the main object of the present invention to provide process for the electrowinning of manganese employing cathodes capable of effectively serving for long periods of time Without extensive treatment and from which deposited metal is easily removed.
- Another object is to provide a method for fabricating and conditioning such materials to make them suitable for use as cathodes for the electrowinning of manganese.
- nickel-base alloys containing molybdenum, chromium, iron and Wolfram are very highly resistant to corrosion by aqueous solutions of manganese and ammonium mineral salts, the electrolyte employed in most commercial processes for the electrowinning of manganese. Additionally, it has been found that such alloys, when used as cathodes for the electrowinning of manganese, have maintained their polished surfaces for much longer periods of time than was heretofore believed possible of cathodes. These characteris tics, together with the fact that such cathodes permit much easier stripping of the deposited manganese metal serve to make the cathodes of the present invention ideal for use in the electrolytic depositing of manganese from manganese and ammonium mineral salt solutions.
- a nickelbase alloy containing 2% to 20% molybdenum, to 25% chromium, 4% to 25% iron, 0.5% to 10% wolfram and to 83.5% nickel is provided in rolled, annealed sheets of the desired thickness having smooth surfaces. Thereupon, the sheets are surface polished with abrasive paper or other suitable equivalent. The asformed sheet is then degreased prior to its employment as a cathode in a diaphragm cell for the electrowinning of manganese.
- cathode may be precoated with a dilute solution of sodium silicate, or suitable equivalent. It is preferable to wash and degrease the cathode plates prior to their use in the electrolytic cell to remove dirt and other contaminants, as well as to improve adherence of the deposited metal to the cathode plates.
- Cathodes prepared in accordance with the present invention have been found to be far superior to any heretofore employed for the electrowinning of metallic manganese from aqueous solutions due especially to their properties of high resistance to corrosion by the electrolyte and ease of stripping of deposited metal therefrom. Because of the two aforementioned properties the cathodes maintain their polished surfaces for longer periods of time, thereby reducing the frequency of the surface polishing treatment and consequently increasing the period of use of a given cathode.
- cathode 1 surface polished, washed, degreased cathodes having the composition given for Cathode 1 above were used in the cathode compartment of a diaphragm cell for the electrowinning of metallic manganese in which liters of solution containing 27.2 grams per liter of manganese, 128.5 grams per liter of ammonium sulphate, 0.68 gram per liter of sulphur dioxide and some magnesium was continuously introduced as catholyte cell feed. Electrolysis was maintained at a cathode current density of 41 amperes per square foot and high purity manganese metal was deposited on the cathode. The current efiiciency was 64.8% for a deposition time of 24 hours. The deposited metal was easily removed, leaving a mirror polished surface on the cathode which was used for further deposition of manganese metal without further polishing.
- metallic and non-metallic impurities of the order of approximately 2% may be, and ordinarily are, contained in such alloys without substantially altering the composition or properties of such alloys when used as cathodes for the electrowinning of manganese.
- Manganese metal deposited on cathodes in accordance with the present invention may be treated to prevent oxidation by dipping the cathodes and deposited metal in a dilute solution of sodium bichromate prior to the stripping operation.
- a process for the electrowinning of manganese from an aqueous solution of a manganese and ammonium mineral salt in a diaphragm cell comprising electrolytically depositing metallic manganese from said aqueous solution on at least one thin alloy sheet cathode having rolled, annealed, polished, degreased surfaces and containing 10 per cent to 25 per cent chromium, 0.5 per cent Wolfram, 4 per cent to 25 per cent iron, 2 per cent to 20 per cent molybdenum, and 20 per cent to 83.5 per cent nickel; removing said cathode from said cell and removing said deposited metallic manganese from said cathode; and returning said cathode to said cell for further deposition of metallic manganese.
- a process for the electrowinning of manganese from an aqueous solution of a manganese and ammonium mineral salt in a diaphragm cell comprising electrolytically depositing metallic manganese from said aqueous solution on at least one thin alloy sheet cathode having rolled, annealed, polished, degreased surfaces and containing 10 per cent to 25 per cent chromium, 0.5 per cent to 10 per cent Wolfram, 4 per cent to 25 per cent with a dilute solution of sodium bicl'n'emate to prevent 3.
- a process for the eiectrowinning of manganese iron an aqueous solution of a manganese and :nnrnoninn: nineral salt in a diaphragm cell comprising electrolytically depositing metallic manganese from said non-cons solution on at least one thin alley sheet cathode having rolled, annealed, polished, degreased surfaces and composed oi: approximately 15 per cent chromium, 5 per cent wolfram, 6 per eent iron, 17 per cent molybdenum and 55 per cent nickel; removing said cathode from said cell and treating said deposited metallic manganese with a dilute solution of sodium bichromate to prevent o/.”lation thereof; removing said deposited metallic inang nese from said cathode; and returning said cathode to said cell for further deposition of metallic manganese.
- a process for the electrowinning of manganese from an aqueous solution of a manganese and ammonium mineral salt in a diaphragm cell comprising electrolytically depositing metallic manganese from said aqueous solu' tion on at least one thin alloy sheet cathode being rolled, annealed, polished, degreased surfaces and composed of approximately 22 per cent chromium, 2 per cent Wolfram, 25 per cent iron, 9 per cent molybdenum, 39 per cent nickel, 0.1 per cent tantalum, and 0.5 per cent niobium; removing said cathode from said cell and treating said deposited metallic manganese with a dilute solution of sodium bichromate to prevent oxidation thereof; T011101 ing said deposited metallic manganese from said cathode; and returning said cathode to said cell [or further deposition of metallic manganese.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Description
, a 2,755,241 mted States Patent Ofice P........ ant-1,1956
ELECTROWINNING F MANGANESE Glen D. Bagley, Lewiston, and Michael C. Carosella, Niagara Falls, N. Y., assignors to Union Carbide and Carbon Corporation, a corporation of New York No Drawing. Application July 28, 1952, Serial No. 301,382
4 Claims. (Cl. 204-105) The present invention relates to cathodes for use in the electrowinning of manganese from aqueous solutions and more particularly to a method for the preparation and use of such cathodes.
The characteristics required of successful cathodes for the electrowinning of manganese, some of which are stated in United States Patent No. 2,325,660, are exacting and, heretofore, no metal or metal alloy has been discovered which satisfies all of the characteristics to a sufficient degree.
It is, therefore, the main object of the present invention to provide process for the electrowinning of manganese employing cathodes capable of effectively serving for long periods of time Without extensive treatment and from which deposited metal is easily removed.
Another object is to provide a method for fabricating and conditioning such materials to make them suitable for use as cathodes for the electrowinning of manganese.
Other aims and advantages will be apparent from the following description and appended claims.
It has been discovered that nickel-base alloys containing molybdenum, chromium, iron and Wolfram are very highly resistant to corrosion by aqueous solutions of manganese and ammonium mineral salts, the electrolyte employed in most commercial processes for the electrowinning of manganese. Additionally, it has been found that such alloys, when used as cathodes for the electrowinning of manganese, have maintained their polished surfaces for much longer periods of time than was heretofore believed possible of cathodes. These characteris tics, together with the fact that such cathodes permit much easier stripping of the deposited manganese metal serve to make the cathodes of the present invention ideal for use in the electrolytic depositing of manganese from manganese and ammonium mineral salt solutions.
In accordance with the present invention a nickelbase alloy containing 2% to 20% molybdenum, to 25% chromium, 4% to 25% iron, 0.5% to 10% wolfram and to 83.5% nickel is provided in rolled, annealed sheets of the desired thickness having smooth surfaces. Thereupon, the sheets are surface polished with abrasive paper or other suitable equivalent. The asformed sheet is then degreased prior to its employment as a cathode in a diaphragm cell for the electrowinning of manganese.
It has been found that in many cases metallic manganese can easily be deposited and stripped from cathodes prepared in accordance with the present invention without precoating the cathode surfaces. Inthose cases where easier stripping is desired the cathode may be precoated with a dilute solution of sodium silicate, or suitable equivalent. It is preferable to wash and degrease the cathode plates prior to their use in the electrolytic cell to remove dirt and other contaminants, as well as to improve adherence of the deposited metal to the cathode plates.
Cathodes prepared in accordance with the present invention have been found to be far superior to any heretofore employed for the electrowinning of metallic manganese from aqueous solutions due especially to their properties of high resistance to corrosion by the electrolyte and ease of stripping of deposited metal therefrom. Because of the two aforementioned properties the cathodes maintain their polished surfaces for longer periods of time, thereby reducing the frequency of the surface polishing treatment and consequently increasing the period of use of a given cathode.
Metal alloy cathodes having the two following compositions have been prepared in accordance with the present invention and have fulfilled the requirements for use in the electrowinning of manganese with greater success than all of the prior art cathodes tested:
Cathode I.15% Cr, 17% Mo, 5% W, 6% Fe, 55% Ni.
Cathode II.22% Cr, 9% Mo, 2% W, 25% Fe, 39% Ni, 0.1% Ta, 0.5% Nb.
For example, surface polished, washed, degreased cathodes having the composition given for Cathode 1 above were used in the cathode compartment of a diaphragm cell for the electrowinning of metallic manganese in which liters of solution containing 27.2 grams per liter of manganese, 128.5 grams per liter of ammonium sulphate, 0.68 gram per liter of sulphur dioxide and some magnesium was continuously introduced as catholyte cell feed. Electrolysis was maintained at a cathode current density of 41 amperes per square foot and high purity manganese metal was deposited on the cathode. The current efiiciency was 64.8% for a deposition time of 24 hours. The deposited metal was easily removed, leaving a mirror polished surface on the cathode which was used for further deposition of manganese metal without further polishing.
It is, of course, to be understood that minor amounts, not in excess of 5%, of metals usually found in alloys of this type may be contained in the alloy. Metals such as tantalum, niobium, vanadium, titanium and aluminum are but a few of the metals normally found in minor amounts in such alloys.
In addition, metallic and non-metallic impurities of the order of approximately 2% may be, and ordinarily are, contained in such alloys without substantially altering the composition or properties of such alloys when used as cathodes for the electrowinning of manganese.
Manganese metal deposited on cathodes in accordance with the present invention may be treated to prevent oxidation by dipping the cathodes and deposited metal in a dilute solution of sodium bichromate prior to the stripping operation.
What is claimed is:
l. A process for the electrowinning of manganese from an aqueous solution of a manganese and ammonium mineral salt in a diaphragm cell comprising electrolytically depositing metallic manganese from said aqueous solution on at least one thin alloy sheet cathode having rolled, annealed, polished, degreased surfaces and containing 10 per cent to 25 per cent chromium, 0.5 per cent Wolfram, 4 per cent to 25 per cent iron, 2 per cent to 20 per cent molybdenum, and 20 per cent to 83.5 per cent nickel; removing said cathode from said cell and removing said deposited metallic manganese from said cathode; and returning said cathode to said cell for further deposition of metallic manganese.
2. A process for the electrowinning of manganese from an aqueous solution of a manganese and ammonium mineral salt in a diaphragm cell comprising electrolytically depositing metallic manganese from said aqueous solution on at least one thin alloy sheet cathode having rolled, annealed, polished, degreased surfaces and containing 10 per cent to 25 per cent chromium, 0.5 per cent to 10 per cent Wolfram, 4 per cent to 25 per cent with a dilute solution of sodium bicl'n'emate to prevent 3. A process for the eiectrowinning of manganese iron an aqueous solution of a manganese and :nnrnoninn: nineral salt in a diaphragm cell comprising electrolytically depositing metallic manganese from said non-cons solution on at least one thin alley sheet cathode having rolled, annealed, polished, degreased surfaces and composed oi: approximately 15 per cent chromium, 5 per cent wolfram, 6 per eent iron, 17 per cent molybdenum and 55 per cent nickel; removing said cathode from said cell and treating said deposited metallic manganese with a dilute solution of sodium bichromate to prevent o/."lation thereof; removing said deposited metallic inang nese from said cathode; and returning said cathode to said cell for further deposition of metallic manganese.
4. A process for the electrowinning of manganese from an aqueous solution of a manganese and ammonium mineral salt in a diaphragm cell comprising electrolytically depositing metallic manganese from said aqueous solu' tion on at least one thin alloy sheet cathode being rolled, annealed, polished, degreased surfaces and composed of approximately 22 per cent chromium, 2 per cent Wolfram, 25 per cent iron, 9 per cent molybdenum, 39 per cent nickel, 0.1 per cent tantalum, and 0.5 per cent niobium; removing said cathode from said cell and treating said deposited metallic manganese with a dilute solution of sodium bichromate to prevent oxidation thereof; T011101 ing said deposited metallic manganese from said cathode; and returning said cathode to said cell [or further deposition of metallic manganese.
References Cited in the file of this patent UNITED STATES PATENTS Chamberlain Aug. 3, 1943 Jacobs Jan. 24, 1950 OTHER REFERENCES
Claims (1)
1. A PROCESS FOR THE ELECTROWINNING OF MANGANESE FROM AN AQUEOUS SOLUTION OF A MANGANESE AND AMMONIUM MINERAL SALT IN A DIAPHRAGM CELL COMPRISING ELECTROLYTICALLY DEPOSITING METALLIC MANGANESE FROM SAID AQUEOUS SOLUTION ON AT LEAST ONE THIN ALLOY SHEET CATHODE HAVING ROLLED, ANNEALED, POLISHED, DEGREASED SURFACES AND CONTAINING 10 PER CENT TO 25 PER CENT CHROMINUM, 0.5 PER CENT WOLFRAM, 4 PER CENT TO 25 PER CENT IRON, 2 PER CENT TO 20 PER CENT MOLYBDENUM, AND 20 PER CENT TO 83.5 PER CENT NICKEL; REMOVING SAID CATHODE FROM SAID CELL AND REMOVING SAID DEPOSITED METALLIC MANGANESE FROM SAID CATHODE; AND RETURNING SAID CATHODE TO SAID CELL FOR FURTHER DEPOSITION OF METALLIC MANGANESE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US301382A US2755241A (en) | 1952-07-28 | 1952-07-28 | Electrowinning of manganese |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US301382A US2755241A (en) | 1952-07-28 | 1952-07-28 | Electrowinning of manganese |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2755241A true US2755241A (en) | 1956-07-17 |
Family
ID=23163110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US301382A Expired - Lifetime US2755241A (en) | 1952-07-28 | 1952-07-28 | Electrowinning of manganese |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2755241A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4010085A (en) * | 1976-04-28 | 1977-03-01 | Ppg Industries, Inc. | Cathode electrocatalyst |
| US4033837A (en) * | 1976-02-24 | 1977-07-05 | Olin Corporation | Plated metallic cathode |
| US4151051A (en) * | 1978-05-01 | 1979-04-24 | Evans Robert F | Electrodeposition mining of materials from natural water bodies |
| US4304647A (en) * | 1979-11-15 | 1981-12-08 | Sachs-Systemtechnik Gmbh | Arrangement for the purification of liquids by means of anodic oxidation |
| US4778576A (en) * | 1986-07-31 | 1988-10-18 | The Dow Chemical Company | Nickel alloy anodes for electrochemical dechlorination |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2325660A (en) * | 1941-01-02 | 1943-08-03 | Electro Manganese Corp | Electrodeposition of manganese and cathode therefor |
| US2495457A (en) * | 1945-01-16 | 1950-01-24 | Crimora Res And Dev Corp | Method of treating cathodes for electrowinning manganese |
-
1952
- 1952-07-28 US US301382A patent/US2755241A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2325660A (en) * | 1941-01-02 | 1943-08-03 | Electro Manganese Corp | Electrodeposition of manganese and cathode therefor |
| US2495457A (en) * | 1945-01-16 | 1950-01-24 | Crimora Res And Dev Corp | Method of treating cathodes for electrowinning manganese |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033837A (en) * | 1976-02-24 | 1977-07-05 | Olin Corporation | Plated metallic cathode |
| US4010085A (en) * | 1976-04-28 | 1977-03-01 | Ppg Industries, Inc. | Cathode electrocatalyst |
| US4151051A (en) * | 1978-05-01 | 1979-04-24 | Evans Robert F | Electrodeposition mining of materials from natural water bodies |
| US4304647A (en) * | 1979-11-15 | 1981-12-08 | Sachs-Systemtechnik Gmbh | Arrangement for the purification of liquids by means of anodic oxidation |
| US4778576A (en) * | 1986-07-31 | 1988-10-18 | The Dow Chemical Company | Nickel alloy anodes for electrochemical dechlorination |
| US4789449A (en) * | 1986-07-31 | 1988-12-06 | The Dow Chemical Company | Nickel alloy anodes for electrochemical cell |
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