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233:. For steel production, this method uses an inert anode (Carbon, Platinum, Iridium or Chromium-based alloy) and places iron ore in the cathode. The electrochemical reaction in this Molten Oxide cell can reach up to 1600 °C, a temperature that melts iron ore and electrolyte oxide. Then the molten iron ore decompose following this reaction.
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In electrorefining, decarburization process happened in electrochemical cell that composed of inert electrode, slag and steel. During the process, current passing through the cell and made slag and steel melted. Oxygen ion from slag decompose and oxidize carbon on steel and to form CO. That
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D.R., George C. Marshall Space Flight Center
Marshall Space Flight Center, AL 35812, National Aeronautics and Space Administration Washington, DC 20546-0001 Curreri, P.A. Ethridge, E.C. Hudson, S.B. Miller, T.Y. Grugel, R.N. Sen, S. Sadoway.
138:. Electrolysis can be used as a final refining stage in pyrometallurgical metal production (electrorefining) and it is also used for reduction of a metal from an aqueous metal salt solution produced by hydrometallurgy (electrowinning).
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is come from the slag, based on the reaction above, beside producing CO gas, this method also producing pure silicon (depending on the slag). The benefit of this direct decarburization process is it does not produce
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358:. Moreover, if the electricity to run such cells comes from renewable sources, this process may have zero emissions. This technology also can be implemented for producing Nickel, Chromium, and Ferrochromium.
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The electrolysis reaction will produce molten pure iron as a main product and oxygen as its by-product. Because this process does not add coke in the process, no CO
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operations. The electrolysis can be done on a molten metal oxide (smelt electrolysis) which is used for example to produce aluminium from aluminium oxide via the
377:
The purpose of this method is to reduce carbon content from steel. This process is suitable for secondary steelmaking industry which recycling steel
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Process
Demonstration For Lunar In Situ Resource Utilization--Molten Oxide Electrolysis (MSFC Independent Research and Development Project No. 5-81)
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Allanore, Antoine; Ortiz, Luis A; Sadoway, Donald R (2011-04-19), Neelameggham, Neale R.; Belt, Cynthia K.; Jolly, Mark; Reddy, Ramana G. (eds.),
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that uses electrical energy to produce metals by electrolysis. It is usually the last stage in metal production and is therefore preceded by
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by electrodeposition is included in this category, or sometimes electrowinning, or a separate category depending on application.
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that has variety of carbon content in their feedstock. This method aim to replace current conventional method that utilizing
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Currently
Massachusetts-based Boston Metal company is in a process to scale up this technology to an industrial level.
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1177:"Molten Oxide Electrolysis for Iron Production: Identification of Key Process Parameters for Largescale Development"
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385:(BOF) to reduce carbon content of iron by blowing oxygen to make it react with carbon and forming CO
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decarburizing reaction is occurred in three steps as follow. (ads) means adsorbed intermediate
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1029:. Djokić, Stojan S., Grgur, Branimir N., 1965-. New York: Kluwer Academic/Plenum Publishers.
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in steelmaking is utilizing electrons as the reducing agent instead of
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Electrometallurgy is the field concerned with the processes of metal
1183:, Hoboken, NJ, USA: John Wiley & Sons, Inc., pp. 121–129,
938:{\displaystyle {\ce {C{}+1/2SiO2<=>CO_{(g)}{}+1/2Si_{(}l)}}}
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Judge, William D.; Paeng, Jaesuk; Azimi, Gisele (October 2022).
642:{\displaystyle {\ce {C(O_{(ads)}^{-})<=>C(O_{(ads)}^{})}}}
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516:{\displaystyle {\ce {O2- + C <=> C(O^{-}_{(ads)}) +e-}}}
15:
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Allanore, Antoine; Yin, Lan; Sadoway, Donald R. (May 2013).
1253:"Electrorefining for direct decarburization of molten iron"
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The total reaction from this cell is following this scheme
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341:{\displaystyle {\ce {Fe2O3(l) + e- -> Fe(l) + O2(g)}}}
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786:{\displaystyle {\ce {C(O_{(ads)}^{})<=>CO_{(}g)}}}
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980:, John Wiley & Sons, Ltd, pp. 523–557, 2016,
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150:. There are seven categories of these processes:
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978:Physical Chemistry of Metallurgical Processes
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365:Direct Decarburization Electrorefining
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1221:"Decarbonizing Steel Production"
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673:{\displaystyle {\ce {+ e-}}}
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1120:2013Natur.497..353A
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33:single source
29:This article
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1326:Electrolysis
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1228:. Retrieved
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217:MOE scheme
1315:Categories
1230:2022-11-22
1204:2022-11-22
1001:2020-09-24
960:References
124:metallurgy
70:newspapers
1301:237947963
1285:1476-4660
1146:1476-4687
1079:cite book
1071:703646739
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294:⟶
289:−
142:Processes
40:talk page
1293:34580434
1154:23657254
1045:51893969
1265:Bibcode
1162:4379353
1116:Bibcode
947:The SiO
194:Etching
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1193:ISBN
1150:PMID
1142:ISSN
1089:link
1085:link
1067:OCLC
1041:OCLC
1031:ISBN
990:ISBN
227:coke
63:news
1273:doi
1185:doi
1132:hdl
1124:doi
1112:497
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