WO1986002108A1 - Procede de production de calcium ou d'alliages de calcium de haute purete - Google Patents
Procede de production de calcium ou d'alliages de calcium de haute purete Download PDFInfo
- Publication number
- WO1986002108A1 WO1986002108A1 PCT/FR1985/000266 FR8500266W WO8602108A1 WO 1986002108 A1 WO1986002108 A1 WO 1986002108A1 FR 8500266 W FR8500266 W FR 8500266W WO 8602108 A1 WO8602108 A1 WO 8602108A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- calcium
- alloy
- cathode
- high purity
- electrolysis
- Prior art date
Links
- 239000011575 calcium Substances 0.000 title claims abstract description 47
- 229910052791 calcium Inorganic materials 0.000 title claims abstract description 45
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 229910000882 Ca alloy Inorganic materials 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 24
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000010703 silicon Substances 0.000 claims abstract description 15
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 15
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 14
- 239000010439 graphite Substances 0.000 claims abstract description 14
- 150000003839 salts Chemical class 0.000 claims abstract description 13
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 12
- 239000000956 alloy Substances 0.000 claims abstract description 12
- 150000001669 calcium Chemical class 0.000 claims abstract description 11
- -1 calcium halides Chemical class 0.000 claims abstract description 8
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- 230000008021 deposition Effects 0.000 claims abstract description 5
- 238000005292 vacuum distillation Methods 0.000 claims abstract description 5
- 239000005997 Calcium carbide Substances 0.000 claims abstract description 4
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910021346 calcium silicide Inorganic materials 0.000 claims abstract description 3
- 238000011065 in-situ storage Methods 0.000 claims abstract description 3
- 229910001338 liquidmetal Inorganic materials 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 15
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 229910052718 tin Inorganic materials 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 5
- 239000001110 calcium chloride Substances 0.000 claims description 5
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 5
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 5
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052797 bismuth Inorganic materials 0.000 claims description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000005275 alloying Methods 0.000 claims 1
- 150000002739 metals Chemical class 0.000 abstract description 5
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 13
- 150000004820 halides Chemical class 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 235000011148 calcium chloride Nutrition 0.000 description 4
- 229910014813 CaC2 Inorganic materials 0.000 description 3
- 229910004261 CaF 2 Inorganic materials 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- 229910001128 Sn alloy Inorganic materials 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910004706 CaSi2 Inorganic materials 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000374 eutectic mixture Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- CSDQQAQKBAQLLE-UHFFFAOYSA-N 4-(4-chlorophenyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine Chemical compound C1=CC(Cl)=CC=C1C1C(C=CS2)=C2CCN1 CSDQQAQKBAQLLE-UHFFFAOYSA-N 0.000 description 1
- MVXMNHYVCLMLDD-UHFFFAOYSA-N 4-methoxynaphthalene-1-carbaldehyde Chemical compound C1=CC=C2C(OC)=CC=C(C=O)C2=C1 MVXMNHYVCLMLDD-UHFFFAOYSA-N 0.000 description 1
- 229910004776 CaSn3 Inorganic materials 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
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910000978 Pb alloy Inorganic materials 0.000 description 1
- CWVZGJORVTZXFW-UHFFFAOYSA-N [benzyl(dimethyl)silyl]methyl carbamate Chemical compound NC(=O)OC[Si](C)(C)CC1=CC=CC=C1 CWVZGJORVTZXFW-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 150000004673 fluoride salts Chemical class 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000002076 thermal analysis method Methods 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 210000003462 vein Anatomy 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
- 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
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/33—Silicon
-
- 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
- C25C3/36—Alloys obtained by cathodic reduction of all their ions
Definitions
- the present invention relates to a process for the production of high purity calcium or calcium alloys, by electrolysis of a calcium derivative in a bath of molten salts, the derivative being in solution in the bath in ionic form.
- liquid cathode the process consisting in using as a cathode a liquid or molten metal, generally deposited at the bottom of the electrolysis tank.
- the invention aims precisely to obtain high purities, both for calcium and for its partner in the derivative. It consists in causing the deposition of calcium or of the alloy on a cathode by electrolysis of a calcium derivative in a bath of molten salts based on calcium halides, the calcium derivative being in solution in the salt bath. fused in ionic form.
- the metal constituting the liquid cathode one can choose for example aluminum, tin, copper, lead, bismuth, nickel, etc.
- the metal constituting the cathode is for example in the molten state. These metals can be used pure or as a mixture. To lower their melting point, they can also be pre ⁇ combined with calcium.
- the metal cathode is liquid proper, that is to say that the cathode is liquid from the start, even before the start of electrolysis.
- the cathode can be solid at the start and gradually change to the liquid state during the electrolysis process, as the Ca / Ni alloy is formed. .
- calcium derivative in ionic solution in molten calcium halides there may be mentioned calcium nitride, calcium hydride, calcium carbide, calcium silicide or if 1 ico-ca 1 cium, calcium boride , calcium cyanide and calcium cyanamide.
- CaC2 which make it possible to produce, at the anode, silicon, respectively, graphite carbon of high purity, alongside of course calcium or calcium alloys of high purity at the cathode.
- the calcium halides are chosen from the group comprising chloride, calcium fluoride and their mixtures.
- eutectic mixtures are preferably chosen.
- the bath may contain other halides, for example alkali halides, chlorides or fluorides in particular.
- the process is carried out at molten salt bath temperatures of between 650 and 1100 ° C., depending on the electrolysis conditions and on the calcium derivative treated.
- concentrations of these derivatives in the bath obviously depend on the nature of this derivative and on its solubility in the molten halide.
- the concentration of CaC2 in the bath is generally between 5 and 14% by weight, at the aforementioned temperatures.
- the concentration of CaS.i2 (ico-calcium silica is a relatively common metallurgical product) is generally between 1 and 2% by weight, also at the aforementioned temperatures.
- the calcium alloy obtained as a liquid cathode, is characterized by a high degree of purity and gives easy access to calcium which is also of high purity.
- distillation in fact, in particular under vacuum, it is easy to decompose the alloy and recover the calcium and the metal.
- reduced pressure 5 x 10 "2 to 10 HPa
- the silicon being obtained in an anodic manner is characterized by a high degree of purity and it is impossible to detect there by the traditional analytical means traces of conventional metallic contaminants, such as Fe, Al, Ca, Cu, Mg.
- the bath is regenerated to remove CaO (notably from technical CaC2) and the other impurities which have accumulated there.
- CaO notably from technical CaC2
- Cl 2 gas optionally in the presence of C in suspension or a reducing gas such as methane.
- the cell After fusion (772 ° C) the cell is closed and pumping is carried out using a vacuum line comprising a liquid nitrogen trap and one. primary pump.
- the calcium chloride is brought to 950 ° C. under a vacuum of 10 "" * HPa for 2 hours. After this treatment, the chloride is completely anhydrous (% H2O ⁇ 0.01 *).
- the cathodic current density is between 0.6 and 1.2 A / m 2 , ie electrolysis conditions corresponding on average to 120 A and 1 V.
- the electrolysis time is 5 hours.
- the metal alloy located at the bottom of the crucible is drawn off and analyzed.
- the alloy has a 10.8% calcium content and its melting point measured by thermal analysis is located at 625 ° C., that is to say very close to the compound CaSn3 "
- the anode was covered with a relatively dense graphite sponge of about 400 cm ⁇ containing about 210 g of graphite.
- the calcium alloy is then distilled in vacuo at 1000 ° C under ÎO- * HPa with a condenser temperature of 500 ° C.
- the metal obtained counts 99.2% calcium.
- the salt bath maintained in the graphite crucible has about 3% CaO or equivalent which are eliminated by adding to the bath about 200 g of anodic carbon sponge powder, finely ground and redispersed in the bath by stirring and by injection. and cladding of 300 g of chlorine gas diluted in argon.
- the bath also regenerated, is filtered on a porous nickel filter and reused for subsequent productions. .
- Example 2 The same procedure as that of Example 1 is used, except that only 310 g of technical C C2 is dissolved and that the electrolysis is carried out only at 700 ° C.
- the electrolysis was conducted in the same way, that is to say on average under 1 V practical and 120 A.
- the metal is recovered by vacuum distillation at 700 ° C under 10 ⁇ 2 HPa with a condenser at 500 ° C.
- the calcium obtained is of quality comparable to that of Example 1: 99.3% purity.
- the bath containing approximately 1% of CaO is regenerated by chlorination after dispersion of 100 g of sponge powder and passage of 150 g of chlorine gas, the titration of the bath is carried out by adding approximately 25 g of
- the calcium is then extracted by vacuum distillation of the calcium / tin alloy.
- the silicon formed a compact deposit on the anode. At the interface between the anode and the deposit, the presence of silicon carbide can be detected.
- the deposit of silicon is recovered on the anode and it is found that this metal is in a state of high purity. Indeed, no metal impurity is detectable with the analysis means available.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
- Carbon And Carbon Compounds (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR8507254A BR8507254A (pt) | 1984-10-05 | 1985-09-27 | Processo de producao de calcio ou de ligas de calcio de alta pureza |
FI871421A FI871421L (fi) | 1984-10-05 | 1987-04-01 | Foerfarande foer framstaellning av synnerligen ren kalcium eller kalciumlejeringar. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8415506A FR2571353B1 (fr) | 1984-10-05 | 1984-10-05 | Procede de production du silicium |
FR84/15506 | 1984-10-05 | ||
FR84/17941 | 1984-11-21 | ||
FR8417941A FR2573442B1 (fr) | 1984-11-21 | 1984-11-21 | Procede de production d'alliages de calcium de haute purete |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1986002108A1 true WO1986002108A1 (fr) | 1986-04-10 |
Family
ID=26224194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1985/000266 WO1986002108A1 (fr) | 1984-10-05 | 1985-09-27 | Procede de production de calcium ou d'alliages de calcium de haute purete |
Country Status (9)
Country | Link |
---|---|
US (1) | US4738759A (fr) |
EP (1) | EP0230411A1 (fr) |
AU (1) | AU5011085A (fr) |
BR (1) | BR8507254A (fr) |
ES (1) | ES8608449A1 (fr) |
FI (1) | FI871421L (fr) |
NO (1) | NO862234L (fr) |
PT (1) | PT81241B (fr) |
WO (1) | WO1986002108A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994028201A1 (fr) * | 1993-05-24 | 1994-12-08 | Maloe Nauchno-Proizvodstvennoe Predpriyatie 'mms' | Procede de production d'un alliage d'aluminium-strontium |
FR2797891A1 (fr) * | 1999-08-26 | 2001-03-02 | Ind Des Poudres Spheriques | Procede de production de calcium et d'alliages de calcium a partir de carbure de calcium |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8707781D0 (en) * | 1987-04-01 | 1987-05-07 | Shell Int Research | Electrolytic production of metals |
US5024737A (en) * | 1989-06-09 | 1991-06-18 | The Dow Chemical Company | Process for producing a reactive metal-magnesium alloy |
US5131988A (en) * | 1991-04-12 | 1992-07-21 | Reynolds Metals Company | Method of extracting lithium from aluminum-lithium alloys |
NZ334956A (en) * | 1996-09-30 | 2001-02-23 | Claude Fortin | Process for obtaining titanium or other metals using shuttle alloys, particularly titanium metal from titanium dioxide in the form of illmenite, rutile |
US6272768B1 (en) | 1999-11-12 | 2001-08-14 | Michael J. Danese | Apparatus for treating an object using ultra-violet light |
US6457478B1 (en) | 1999-11-12 | 2002-10-01 | Michael J. Danese | Method for treating an object using ultra-violet light |
NO317073B1 (no) * | 2001-06-05 | 2004-08-02 | Sintef | Elektrolytt samt fremgangsmate ved fremstilling eller raffinering av silisium |
US20040182718A1 (en) * | 2003-03-21 | 2004-09-23 | Mcwhorter Edward Milton | Consumable electrode |
US8951401B2 (en) * | 2010-05-28 | 2015-02-10 | Toyota Boshoku Kabushiki Kaisha | Method for electrochemically depositing carbon film on a substrate |
CN102002730A (zh) * | 2010-12-08 | 2011-04-06 | 华东理工大学 | 一种去除锂电解质KCl-LiCl中杂质MgCl2的方法 |
CN102071434B (zh) * | 2010-12-08 | 2012-11-14 | 华东理工大学 | 一种去除锂电解质KCl-LiCl中杂质CaCl2的方法 |
MX363125B (es) | 2013-03-15 | 2019-03-11 | Univ West Virginia | Proceso para la produccion de carbono puro, composiciones, y sus metodos. |
PE20170819A1 (es) | 2014-10-21 | 2017-07-04 | West Virginia Univ Res Corp | Metodos y aparatos para la produccion de carbono, electrodos de carburo, y composiciones de carbono |
CA3021046A1 (fr) | 2016-04-20 | 2017-10-26 | West Virginia University Research Corporation | Procedes, appareils et electrodes pour la conversion d'un carbure en carbone avec des composes chimiques nanostructures a base de carbure |
CN107385474B (zh) * | 2017-08-04 | 2018-10-12 | 中南大学 | 一种氯化钙熔盐电解制钙用电解质及使用该电解质的电解方法 |
CN111321425B (zh) * | 2020-03-19 | 2021-04-20 | 东北大学 | 一种熔盐氯化生产TiCl4所排放废盐的综合回收利用方法 |
CN111304696B (zh) * | 2020-03-19 | 2021-04-20 | 东北大学 | 电化学法净化再生失活熔盐并回收其中有价金属的方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE458493C (de) * | 1926-02-05 | 1928-04-12 | Wilhelm Kroll Dr Ing | Verfahren zur Gewinnung von metallischem Calcium |
US3284325A (en) * | 1961-10-25 | 1966-11-08 | Atomic Energy Authority Uk | Production of alkaline earth metals |
FR2325179A1 (fr) * | 1975-09-22 | 1977-04-15 | Rca Corp | Dispositif de visualisation plat perfectionne |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA639728A (en) * | 1962-04-10 | Van Diest Jacques | Process and apparatus for the electrolysis of baths of fused salts | |
ES257371A1 (es) * | 1959-05-13 | 1960-11-16 | Solvay | Procedimiento para la preparaciën de un metal alcalino-terreo por electrëlisis de banos de cloruros fundidos |
-
1985
- 1985-09-27 WO PCT/FR1985/000266 patent/WO1986002108A1/fr not_active Application Discontinuation
- 1985-09-27 AU AU50110/85A patent/AU5011085A/en not_active Abandoned
- 1985-09-27 EP EP85904824A patent/EP0230411A1/fr not_active Withdrawn
- 1985-09-27 BR BR8507254A patent/BR8507254A/pt unknown
- 1985-09-27 US US06/876,857 patent/US4738759A/en not_active Expired - Fee Related
- 1985-10-02 PT PT81241A patent/PT81241B/fr unknown
- 1985-10-03 ES ES547525A patent/ES8608449A1/es not_active Expired
-
1986
- 1986-06-04 NO NO862234A patent/NO862234L/no unknown
-
1987
- 1987-04-01 FI FI871421A patent/FI871421L/fi not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE458493C (de) * | 1926-02-05 | 1928-04-12 | Wilhelm Kroll Dr Ing | Verfahren zur Gewinnung von metallischem Calcium |
US3284325A (en) * | 1961-10-25 | 1966-11-08 | Atomic Energy Authority Uk | Production of alkaline earth metals |
FR2325179A1 (fr) * | 1975-09-22 | 1977-04-15 | Rca Corp | Dispositif de visualisation plat perfectionne |
Non-Patent Citations (1)
Title |
---|
CHEMICAL ABSTRACTS, Vol. 88, No. 6,6 February 1978, Columbus, Ohio (US) A. BONOMI et al.: "Electrowinning of Calcium Metal By Electrolysis of Molten Salt Solution in Calcium Carbide", see page 355, Abstract 43084g & Molten Salt Electrolysis Met. Prod. Int. Symp. 1977, 14-20 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994028201A1 (fr) * | 1993-05-24 | 1994-12-08 | Maloe Nauchno-Proizvodstvennoe Predpriyatie 'mms' | Procede de production d'un alliage d'aluminium-strontium |
FR2797891A1 (fr) * | 1999-08-26 | 2001-03-02 | Ind Des Poudres Spheriques | Procede de production de calcium et d'alliages de calcium a partir de carbure de calcium |
Also Published As
Publication number | Publication date |
---|---|
ES547525A0 (es) | 1986-07-16 |
ES8608449A1 (es) | 1986-07-16 |
EP0230411A1 (fr) | 1987-08-05 |
AU5011085A (en) | 1986-04-17 |
NO862234D0 (no) | 1986-06-04 |
BR8507254A (pt) | 1987-10-27 |
PT81241B (fr) | 1987-04-28 |
NO862234L (no) | 1986-06-04 |
PT81241A (fr) | 1985-11-01 |
US4738759A (en) | 1988-04-19 |
FI871421A0 (fi) | 1987-04-01 |
FI871421L (fi) | 1987-04-01 |
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