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WO2006115027A1 - Cellule électrolytique de sel en fusion et procédé de fabrication de métal utilisant ladite cellule - Google Patents

Cellule électrolytique de sel en fusion et procédé de fabrication de métal utilisant ladite cellule Download PDF

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Publication number
WO2006115027A1
WO2006115027A1 PCT/JP2006/307555 JP2006307555W WO2006115027A1 WO 2006115027 A1 WO2006115027 A1 WO 2006115027A1 JP 2006307555 W JP2006307555 W JP 2006307555W WO 2006115027 A1 WO2006115027 A1 WO 2006115027A1
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WO
WIPO (PCT)
Prior art keywords
molten salt
cathode
container
electrolytic cell
bath
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.)
Ceased
Application number
PCT/JP2006/307555
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English (en)
Japanese (ja)
Inventor
Yuichi Ono
Masanori Yamaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toho Titanium Co Ltd
Original Assignee
Toho Titanium Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toho Titanium Co Ltd filed Critical Toho Titanium Co Ltd
Priority to EP06731502A priority Critical patent/EP1878814A4/fr
Priority to AU2006240896A priority patent/AU2006240896A1/en
Priority to US11/912,550 priority patent/US20090032405A1/en
Priority to JP2007514541A priority patent/JPWO2006115027A1/ja
Publication of WO2006115027A1 publication Critical patent/WO2006115027A1/fr
Anticipated expiration legal-status Critical
Priority to NO20075974A priority patent/NO20075974L/no
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/02—Electrolytic production, recovery or refining of metals by electrolysis of melts of alkali or alkaline earth metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/10—Obtaining titanium, zirconium or hafnium
    • C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
    • C22B34/129—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining metallic titanium from titanium compounds by dissociation, e.g. thermic dissociation of titanium tetraiodide, or by electrolysis or with the use of an electric arc
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
    • C25C7/005—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells of cells for the electrolysis of melts
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
    • C25C7/02—Electrodes; Connections thereof
    • C25C7/025—Electrodes; Connections thereof used in cells for the electrolysis of melts

Definitions

  • the present invention relates to a molten salt electrolytic cell and a method for producing a metal using the same, and more particularly, for extracting calcium containing calcium used as a reducing agent in producing titanium from a titanium compound.
  • the present invention relates to molten salt electrolysis technology.
  • Sponge titanium is conventionally manufactured by the Kroll method, and manufacturing costs have been reduced by stacking various improvements. At the same time, since the crawling method is a batch process, its efficiency is being seen as limited.
  • Patent Document 1 As a technology pursued for the efficiency of titanium production by the Kroll method, there is known a technology for directly producing titanium by reducing titanium oxide with calcium in a molten salt (see, for example, Patent Document 1) . Further, as a technique similar to Patent Document 1, a step of preparing a molten salt by housing a mixed sample of calcium chloride and calcium oxide in a reduction container, heating the mixed sample, and preparing the molten salt, And forming a strongly reducible molten salt in which calcium ions and electrons are generated in the molten calcium chloride, and supplying the titanium oxide to the inside of the strongly reducible molten salt to form titanium oxide.
  • a method for purifying titanium which includes the steps of: reducing and deoxidizing with calcium ions and electrons to form titanium (see, for example, Patent Document 2).
  • the technology described in Patent Document 2 generates titanium by reducing titanium oxide with calcium in a molten salt, dissolves by-produced calcium oxide in calcium chloride, and dissolves the calcium oxide in calcium chloride. Is electrolyzed to produce calcium, which is reused as a reducing agent.
  • titanium is a method of producing titanium using a titanium compound containing halogen titanium or titanium oxide as a raw material and reducing these titanium compounds to produce titanium, which is an electrolytic bath containing a molten salt of an active metal.
  • the molten salt is electrolyzed to produce a reducing agent comprising an active metal or an active metal alloy, and the titanium compound impregnated in the electrolytic bath by electrons emitted from the produced reducing agent is A method of producing reducing titanium is disclosed (e.g. Reference 3).
  • a technology has been disclosed that deposits calcium on the cathode in the solid state using a molten complex salt having a melting point lower than that of calcium, as disclosed in, for example, Patent Document 4. This technique requires a step of exfoliating calcium deposited in the solid state.
  • calcium chloride mixed with calcium or dissolved calcium (hereinafter simply referred to as "calcium containing calcium chloride”) is prepared by subjecting calcium chloride to molten salt electrolysis. It is desirable to develop a technology that can efficiently generate
  • Patent Document 1 WO 99 Z 064 638
  • Patent Document 2 Japanese Patent Application Laid-Open No. 2003-129268
  • Patent Document 3 Japanese Patent Application Laid-Open No. 2003-306725
  • Patent document 4 US 3226311 gazette
  • Patent Document 5 JP-A-49-70808
  • the present invention has been made in view of the above circumstances, and an acid product of titanium or An electrolytic cell for extracting calcium chloride-containing calcium used for reducing chlorides, particularly intended to provide a molten salt electrolytic cell that can efficiently recover calcium chloride by molten salt electrolysis. As you scold!
  • the inventors of the present invention have intensively studied the molten salt electrolytic cell in view of the above situation. As a result, it was found that by making the cathode hollow, calcium chloride can be extracted efficiently.
  • the anode and the hollow cathode are immersed and disposed in the molten salt bath, and the fin member is joined and disposed on the cathode surface, so that calcium chloride containing calcium generated at the cathode has a difference in specific gravity from the bath flow and the surroundings. It has been found that calcium chloride can be extracted and recovered more efficiently through this hollow portion by means of a pressure reducing device which is efficiently introduced into the hollow portion and externally installed, with the influence of In order to complete the invention of
  • the first molten salt electrolytic cell of the present invention comprises a container in which a molten salt bath is held, the anode and the cathode are immersed in the bath, and the cathode is hollow. Yes. Further, in the second molten salt electrolytic cell of the present invention, in the first molten electrolytic cell, a container with a lid in which the molten salt bath is held, and the lid which penetrates the lid from above the container.
  • An anode and a cathode disposed in a molten salt bath a pressure reducing device connected to the cathode, a gas introduction nozzle for introducing a gas from the outside to the inside of the vessel, and a gas inside the vessel Gas discharge nozzle, and a molten salt supply nozzle for supplying molten salt to the inside from the outside of the container, and a fin member is provided on the outer surface of the cathode, and the cathode is directly above the junction with the fin member. It is desirable that a through hole be provided in the
  • the inventors further focused on the calcium generation efficiency at the cathode and conducted intensive studies. As a result, by immersing all the cathodes in the molten salt bath, chloride calcium produced at the cathode is efficiently extracted and recovered with the influence of the bath flow and the difference in specific gravity from the surrounding being minimized. It has been found that it is possible to complete the following invention.
  • a container with a lid in which the molten salt bath is held an anode which penetrates the lid from above the container and is immersed in the molten salt bath.
  • the method for producing a metal of the present invention is characterized by using the above-mentioned first to third molten salt electrolytic cells, and according to such a production method, molten calcium or molten magnesium is used. You can get it.
  • the cathode is hollow, or the cathode is attached to the cathode and the fin member is joined to the cathode, and the cathode is deposited on the cathode surface by providing a through hole in the cathode immediately above the junction.
  • the calcium or calcium chloride has the effect of being able to efficiently recover the sodium chloride calcium in which the calcium is partially dissolved and to be extracted to the outside.
  • FIG. 1 is a side sectional view showing a preferred molten salt electrolytic cell of the present invention.
  • FIG. 2 is a side sectional view showing another preferred molten salt electrolytic cell of the present invention.
  • FIG. 3 is a side sectional view showing another preferred molten salt electrolytic cell of the present invention.
  • FIG. 4 is a side cross-sectional view showing a cathode obtained by modifying the cathode used in the electrolytic cell shown in FIGS. 2 and 3;
  • FIG. 5 is a schematic view of a longitudinal groove of an anode according to an embodiment of the present invention.
  • FIG. 1 is a side sectional view showing a preferred molten salt electrolytic cell of the present invention.
  • the molten salt bath B is held, and a container 10 provided with a lid 10a at the top and a lid 10a from above the container 10 penetrate the lid 10a and are immersed in the molten salt bath B And a decompression device 13 connected to the cathode 12.
  • the lid 10a of the electrolytic cell includes a gas introduction nozzle 14 for introducing a gas from the outside of the container 10, a gas discharge nozzle 15 for discharging the gas to the outside from the outside of the container 10, and the outside of the container 10
  • a molten salt supply nozzle 16 for supplying molten salt to the inside is provided.
  • the cathode 12 has a hollow shape, and a fin member 17 is joined to the outer surface of the cathode 12. Further, a through hole 18 is provided in the cathode 12 immediately above the junction between the cathode 12 and the fin member 17.
  • the melting force generated on the surface of the cathode 12 is efficiently recovered in the hollow portion of the cathode 12 prior to dissolution or diffusion in the molten salt bath B. be able to.
  • the molten salt bath B held in the container 10 is Immerse the anode 11 and the cathode 12 and seal the container 10 with the lid 10 a.
  • an inert gas such as a gas introduction nozzle 14 connected to the lid 10a into the space of the container 10 and to discharge it from the gas discharge nozzle 15 to the outside for circulation.
  • the material of the anode 11 described above is preferably made of a material such as carbon. By using such materials, stable electrolytic operation can be continued without being corroded by chlorine gas generated by the surface force of the cathode 11.
  • the anode 12 formed of calcium is made of stainless steel or titanium material which is not easily corroded by the calcium formed on the surface of the electrolytic bath B or the cathode 12.
  • the cathode 12 used in the electrolytic cell shown in FIG. 1 is hollow inside, and the fin member 17 is disposed on the surface of the portion to be immersed in the molten salt of the cathode 12 and joined. It is preferable to keep it. Further, it is preferable that the fin member 17 be disposed in a state of being expanded upward, and a through hole 18 communicating with the inside be provided at the bonding site of the fin member 17 to the cathode 12.
  • the expansion angle of the fins constituting the fin member 17 is preferably selected from the range of 30 ° to 45 °.
  • the number of fin members 17 it is practical to set the number of fin members 17 to about 2 to 5 for the electrolytic cell shown in FIG. 1 according to the present invention.
  • the size of the through holes 18 in which the through holes 18 be formed at equal intervals on the surface of the cathode 12 be in the range of 10 to 30% of the inner diameter of the cathode 12.
  • the inventors attempted various experiments in the process of completing the molten salt electrolytic cell shown in FIG. 1 and the like.
  • molten salt electrolysis is performed by immersing the cathode and anode, which do not have the fin member on the outer surface, in a calcium chloride bath, a molten salt bath of calcium (hereinafter simply referred to as "metal mist") around the cathode. May spread throughout the molten salt bath B in a short time).
  • the calcium produced on the surface of the cathode 12 passes through the through holes 18 formed on the surface of the cathode 12 along the fin members 17 arranged in the upper opening from the specific gravity difference with the surroundings, It is efficiently led to the hollow space.
  • a contact reaction between calcium generated in the cathode 12 and chlorine gas generated in the anode 11 can be suppressed.
  • the decrease in current efficiency can be effectively prevented.
  • the calcium-containing calcium-containing calcium introduced into the hollow portion of the cathode 12 can be extracted relatively easily to the outside by engaging the other end of the cathode 12 with the decompression device 13.
  • the calcium produced on the surface of the cathode 12 is dissolved in the molten salt bath B and is led to the hollow portion of the cathode 12 via the through hole 18 provided on the surface of the cathode 12 and drawn upward by the pressure reducing device 13.
  • the level of the molten salt bath decreases according to the amount of molten salt bath B discharged from the container 10 to the outside, but the corresponding amount of the new molten salt calcium is
  • the level of the molten salt bath B can be maintained constant by supplying the molten salt supply nozzle 16 installed in the lid 1 Oa to the inside of the container 10. With this type of operation, continuous operation of salt and calcium will be possible.
  • a novel calcium chloride bath may be used, but as described in the prior art, the acid calcium by-produced by the calcium reduction of titanium oxide is used. It is also possible to use calcium chloride-containing calcium which has been chlorinated and converted into total sodium chloride. Yes.
  • the calcium-containing calcium chloride extracted through the hollow portion of the cathode 12 can be used, for example, in the reduction of titanium directly by the titanium oxide, as cited in the prior art. It can be used as an agent. At this time, by cooling the calcium salt containing calcium sulfate extracted through the hollow portion of the cathode 12 to a temperature close to the melting point of calcium, it is dissolved in calcium chloride, You may deposit part!
  • the temperature of the molten salt bath B is preferably maintained above the melting point of calcium chloride. In addition, this temperature is preferably maintained in a range not exceeding 100 ° C. above the melting point of calcium. If the temperature of the molten salt bath B is higher than the melting point of calcium by more than 100 ° C., the evaporation of the molten salt bath B is promoted, the yield is lowered, and this is not preferable.
  • the melting point of the molten salt bath B can be lowered by adding potassium chloride to the calcium chloride constituting the molten salt bath B.
  • the amount of potassium chloride added to calcium chloride is preferably in the range of 18 wt% to 67 wt%.
  • the melting point of the molten salt bath B can be lowered to 600 ° C. to 760 ° C., and the operating temperature of the molten salt bath B can be stably lowered. it can. As a result, it is possible to suppress the amount of generated calcium dissolved in calcium chloride.
  • FIG. 2 is a side sectional view showing another preferred molten salt electrolytic cell of the present invention.
  • the electrolytic cell is disposed in the molten salt bath B so as to penetrate the lid 20a from above the container 20 so as to hold the molten salt bath B and to which the lid 20a is provided at the upper part.
  • a decompression device 24 connected to the bath outlet pipe 23 outside the container 20.
  • the lid 20a of the electrolytic cell also includes a gas introduction nozzle 25 for introducing a gas from the outside of the container 20, a gas discharge nozzle 26 for discharging the gas to the outside from the outside of the container 20, and the outside of the container 20.
  • a molten salt supply nozzle 27 for supplying molten salt to the inside is provided.
  • the container 20, the anode 21, the gas introduction nozzle 25, the gas discharge nozzle 26, and the molten salt supply nozzle 27 are the electrolysis shown in FIG. The same as the corresponding components of the tank.
  • the cathode 22 completely immersed in the molten salt bath B and the bath outlet pipe 23 disposed between the cathode 22 and the pressure reducing device 24 This is the difference in configuration from the electrolytic cell shown in FIG.
  • the cathode 22 may be arranged with high accuracy in the downward extension of the anode 21.
  • the centers of the anode 21 and the cathode 22 may be offset from each other.
  • the cathode 22 is expanded upward, and the expansion angle can be selected in the range of 30 to 45 ° upward with respect to the horizontal plane.
  • Such an expanded cathode 22 exerts the same effect as the fin member 17 which is a component in the electrolytic cell shown in FIG. 1, that is, the influence of the specific gravity difference from the surrounding is minimized. Function to efficiently extract the produced calcium to the outside.
  • the back face of cathode 22 (the face of cathode 22 not facing anode 21 in FIG. 2) and the surface of bath outlet tube 23 are coated with ceramic such as highly insulating silica or alumina by means such as thermal spraying. It is preferable to keep it.
  • ceramic such as highly insulating silica or alumina by means such as thermal spraying. It is preferable to keep it.
  • the bath extraction pipe 23 is of a configuration in which the molten salt bath B is sucked upward to extend through the lid 20 a to the outside of the container 20, and the bottom of the container 20 is Alternatively, a through hole may be provided on the side to extend to the outside through the bottom and the side. You can also. With such an arrangement, the contact between chlorine gas generated at the anode 21 and calcium generated at the cathode 22 can be effectively suppressed.
  • FIG. 3 is a side sectional view showing another preferred molten salt electrolytic cell of the present invention.
  • the electrolytic cell shown in the figure is a modification of the electrolytic cell shown in FIG. 2, and therefore the description of the same components as the electrolytic cell shown in FIG. 2 will be omitted.
  • the electrolytic cell shown in FIG. 3 differs from the electrolytic cell shown in FIG. 2 in that a flow straightening plate 28 extending between the anode 21 and the cathode 22 from the inner wall of the container 20 is provided.
  • the straightening vanes 28 be arranged to be inclined upward with respect to the horizontal plane, as shown in FIG.
  • the inclination of the straightening vane 28 with respect to the horizontal plane is preferably selected in the range of 10 ° to 45 °. By selecting in such a range, the upward flow of the molten salt bath B generated near the cathode 22 can be efficiently suppressed.
  • the rising flow of the calcium-containing molten salt bath B can be directed toward the center of the cathode 22.
  • the baffle plate 28 when the bath flow containing a part of the calcium formed at the cathode 22 reaches the baffle plate 28, the bath flow is the container 20.
  • the flow from each direction influences each other to form the downward flow of the bath shown by the arrow in FIG.
  • the molten salt bath B containing calcium can be introduced toward the center of the cathode 22 and can be efficiently withdrawn from the system via the bath withdrawal pipe 23.
  • FIG. 4 is a side cross-sectional view showing a cathode 30 obtained by modifying the cathode 22 used in the electrolytic cell shown in FIGS. 2 and 3.
  • the cathode 30 is formed in two stages of upwardly expanding portions 31 and 32, and a through hole 33 is provided between the expanded portions 31 and 32.
  • the cathode 30 it is possible to further add to the cathode in which the fin member (corresponding to reference numeral 17 in FIG. 1) and the through hole (corresponding to reference numeral 18 in FIG. 1) shown in FIG. Of calcium It is possible to bring out the recovery effect. As a result, the productivity of calcium can be further improved as compared with the electrolytic cell shown in FIGS.
  • the number of longitudinal grooves 51 provided at the lower end portion of the anodes 11 and 21 is preferably arranged at intervals obtained by equally dividing the circumferential direction of the anodes 11 and 21 into 4 to 10. Further, it is preferable to select a medium force in the range of 5% to 20% of the diameter of the anodes 11 and 21 as the width and depth of the grooves. For example, when the diameter of the anode 12 is 15 mm, the width and depth of the flutes are lmn! It is preferable to select from the range of ⁇ 3 mm.
  • the width and depth of such a vertical groove it can be set larger than the bubble diameter of the chlorine gas generated on the surfaces of the anodes 11 and 21, and as a result, the tip portions of the anodes 11 and 21 are generated. The effect of being able to smoothly advance the rising behavior of chlorine gas is achieved.
  • the fin member 17 shown in FIG. 1 and the cathodes 22 and 30 shown in FIGS. 2 to 4 can be made of carbon steel or stainless steel because the calcium to be produced exhibits reducibility.
  • the cathode 12 in FIG. 1 and the bath outlet pipe 23 in FIG. It is preferable to coat etc.
  • the calcium produced in the present invention can be used in the process of directly producing titanium by calcium reduction of titanium oxide using a molten salt.
  • a molten salt when manufacturing high purity titanium, it is preferable to use carbon steel with few nickel and a chromium content rate for cathode 12, 22, 30 shown to FIGS.
  • the metals mentioned dissolve in calcium and molten salt baths This is because there is a risk that the titanium metal formed by the above-described calcium reduction of titanium oxide will be contaminated.
  • the present invention can also be applied to the case where molten salt electrolysis of magnesium chloride is performed by converting the molten salt bath B into calcium chloride as described above. Also in this case, the force by which molten magnesium is formed at the cathode Unlike the case of calcium chloride as described above, magnesium has almost no solubility in magnesium sulfate. For this reason, the magnesium alone can be recovered by standing and separating the magnesium accompanied by sodium chloride magnesium extracted from the bath outlet pipe 23 outside the system. As a result, if the reduction reaction of titanium tetrachloride can be efficiently proceeded, the effect is produced.
  • Fin member Conical shape, 3-stage arrangement
  • Anhydrous calcium sulfate is supplied to the container 10 shown in FIG. 1, and the anode 11 and the cathode 12 are immersed in the anhydrous calcium chloride solution, and then the entire container 10 is sealed with the lid 10a.
  • a small amount of argon gas is also supplied to the gas introduction nozzle 14 connected to a small amount, while exhausting from the gas discharge nozzle 15 connected to the lid 10a, the space above the supplied anhydrous calcium chloride is slightly pressurized
  • the heater was heated to raise the temperature and kept at 800 ° C. ⁇ 5 ° C. by energizing the heater.
  • the pressure reducing device 13 was operated to lower the force of the lower end portion of the cathode 12 to calcium chloride in which calcium was dissolved. I pulled it out. During this time, it was impossible for the light flux generated by the force cathode 12 when the inside of the container 10 was visually observed to diffuse to the anode 11. Further, it was also possible that the formed calcium could stay at the bottom of the cathode 12.
  • the above-described test was carried out seven times in total, and after the test, the amount of calcium in calcium sulfate extracted from container 10 was analyzed, and the current efficiency was calculated based on the amount of current flow. .
  • the current efficiency achieved in the present invention was confirmed to be at a high level as shown in Table 1.
  • a molten salt of calcium chloride was electrolyzed under the same conditions as in Example 1 except that the cathode 12 was changed to the cathode 22 expanded upward as shown in FIG. Calculated. As a result, high current efficiency as shown in Table 2 could be achieved.
  • Example 2 molten salt electrolysis of calcium chloride was performed under the same conditions as in Example 2 except that the cathode 12 sprayed with silica was changed to the outer surface, and the current efficiency was calculated. As a result, high current efficiency as shown in Table 3 could be achieved.
  • calcium is deposited on the surface of the cathode by making the cathode hollow or additionally bonding the fin member to the cathode and providing a through hole immediately above it.
  • Calcium chloride can be extracted to the outside efficiently.
  • the present invention is particularly promising in that it can be applied to the extraction of calcium-containing calcium, which is a reducing agent used in producing titanium compound titanium.

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Abstract

La présente invention concerne une cellule électrolytique de sel en fusion permettant d’extraire le chlorure de calcium contenant du calcium servant à la réduction d’un oxyde ou chlorure de titane, en particulier une cellule électrolytique de sel en fusion capable de récupérer le chlorure de calcium par électrolyse de sel en fusion avec une grande efficacité. La cellule électrolytique de sel en fusion comprend un récipient, qui contient un bain de sel en fusion et possède un couvercle en sa partie supérieure, une anode et une cathode, qui s’étendent à travers le couvercle par le dessus du récipient et qui sont immergées et disposées dans le bain de sel en fusion, un dispositif réducteur de pression connecté à la cathode, une buse d’injection de gaz pour introduire du gaz depuis l’extérieur du récipient dans le récipient, une buse de décharge de gaz permettant de refouler du gaz de l’intérieur du récipient vers l’extérieur du récipient, et une buse d’injection de sel en fusion permettant d’injecter du sel en fusion de l’extérieur du récipient dans le récipient. La cathode est creuse. Un élément à ailettes est joint à la surface externe de la cathode. Un trou traversant est aménagé dans la cathode juste au-dessus de la partie jointe entre la cathode et l’élément à ailettes.
PCT/JP2006/307555 2005-04-25 2006-04-10 Cellule électrolytique de sel en fusion et procédé de fabrication de métal utilisant ladite cellule Ceased WO2006115027A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP06731502A EP1878814A4 (fr) 2005-04-25 2006-04-10 Cellule électrolytique de sel en fusion et procédé de fabrication de métal utilisant ladite cellule
AU2006240896A AU2006240896A1 (en) 2005-04-25 2006-04-10 Molten salt electrolytic cell and process for producing metal using the same
US11/912,550 US20090032405A1 (en) 2005-04-25 2006-04-10 Molten Salt Electrolytic Cell and Process for Producing Metal Using the Same
JP2007514541A JPWO2006115027A1 (ja) 2005-04-25 2006-04-10 溶融塩電解槽およびこれを用いた金属の製造方法
NO20075974A NO20075974L (no) 2005-04-25 2007-11-21 Smeltesalt elektrolysecelle og fremgangsmate for fremstilling av metall ved bruk av denne

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JP2005-126846 2005-04-25
JP2005126846 2005-04-25

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US (1) US20090032405A1 (fr)
EP (1) EP1878814A4 (fr)
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AU (1) AU2006240896A1 (fr)
NO (1) NO20075974L (fr)
WO (1) WO2006115027A1 (fr)

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US8771497B2 (en) * 2007-04-20 2014-07-08 Mitsui Chemicals, Inc. Electrolyzer, electrodes used therefor, and electrolysis method
CN104204306A (zh) * 2011-10-07 2014-12-10 英菲纽姆股份有限公司 用氧化物电解有效生产金属和蒸馏的方法和设备
US11767597B2 (en) * 2018-09-23 2023-09-26 Massachusetts Institute Of Technology Molten metaphosphate electrolysis for production of white phosphorus

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NO20075974L (no) 2007-11-21
AU2006240896A1 (en) 2006-11-02
JPWO2006115027A1 (ja) 2008-12-18
US20090032405A1 (en) 2009-02-05
EP1878814A4 (fr) 2010-01-20

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