RU95114446A - METHOD FOR PRODUCING METAL MAGNESIUM, METHOD FOR PRODUCING PURE MAGNESIUM OXIDE AND METHOD FOR PROCESSING ORIGINAL MATERIAL - Google Patents
METHOD FOR PRODUCING METAL MAGNESIUM, METHOD FOR PRODUCING PURE MAGNESIUM OXIDE AND METHOD FOR PROCESSING ORIGINAL MATERIALInfo
- Publication number
- RU95114446A RU95114446A RU95114446/02A RU95114446A RU95114446A RU 95114446 A RU95114446 A RU 95114446A RU 95114446/02 A RU95114446/02 A RU 95114446/02A RU 95114446 A RU95114446 A RU 95114446A RU 95114446 A RU95114446 A RU 95114446A
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- Prior art keywords
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- zone
- reduction
- sio
- Prior art date
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- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 title claims 92
- 239000000395 magnesium oxide Substances 0.000 title claims 46
- 239000011777 magnesium Substances 0.000 title claims 17
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims 11
- 229910052749 magnesium Inorganic materials 0.000 title claims 11
- 229910052751 metal Inorganic materials 0.000 title claims 7
- 239000002184 metal Substances 0.000 title claims 7
- 239000000463 material Substances 0.000 title claims 3
- 238000004519 manufacturing process Methods 0.000 title 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 49
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims 46
- 235000012245 magnesium oxide Nutrition 0.000 claims 45
- 238000009833 condensation Methods 0.000 claims 32
- 230000005494 condensation Effects 0.000 claims 32
- 239000007858 starting material Substances 0.000 claims 28
- 229910004298 SiO 2 Inorganic materials 0.000 claims 22
- 229910052799 carbon Inorganic materials 0.000 claims 19
- 239000000203 mixture Substances 0.000 claims 17
- 229910052742 iron Inorganic materials 0.000 claims 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 13
- 229910003465 moissanite Inorganic materials 0.000 claims 13
- 229910010271 silicon carbide Inorganic materials 0.000 claims 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 12
- 238000006243 chemical reaction Methods 0.000 claims 11
- 230000003647 oxidation Effects 0.000 claims 9
- 238000007254 oxidation reaction Methods 0.000 claims 9
- 229910052782 aluminium Inorganic materials 0.000 claims 7
- 229910052791 calcium Inorganic materials 0.000 claims 7
- 239000007789 gas Substances 0.000 claims 7
- 229910052609 olivine Inorganic materials 0.000 claims 7
- 239000010450 olivine Substances 0.000 claims 7
- 239000011541 reaction mixture Substances 0.000 claims 7
- 229910052710 silicon Inorganic materials 0.000 claims 7
- 238000007796 conventional method Methods 0.000 claims 6
- 239000000377 silicon dioxide Substances 0.000 claims 6
- 235000012239 silicon dioxide Nutrition 0.000 claims 6
- 229910004283 SiO 4 Inorganic materials 0.000 claims 5
- 229910000640 Fe alloy Inorganic materials 0.000 claims 4
- 229910000676 Si alloy Inorganic materials 0.000 claims 4
- FKHIFSZMMVMEQY-UHFFFAOYSA-N Talc Chemical compound [Mg+2].[O-][Si]([O-])=O FKHIFSZMMVMEQY-UHFFFAOYSA-N 0.000 claims 4
- 239000006227 byproduct Substances 0.000 claims 4
- 238000010438 heat treatment Methods 0.000 claims 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims 4
- 229910000460 iron oxide Inorganic materials 0.000 claims 4
- 239000000391 magnesium silicate Substances 0.000 claims 4
- 229910052919 magnesium silicate Inorganic materials 0.000 claims 4
- 235000019792 magnesium silicate Nutrition 0.000 claims 4
- 235000010755 mineral Nutrition 0.000 claims 4
- 239000011707 mineral Substances 0.000 claims 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims 4
- 229910052804 chromium Inorganic materials 0.000 claims 3
- 238000001704 evaporation Methods 0.000 claims 3
- 238000005188 flotation Methods 0.000 claims 3
- 238000002386 leaching Methods 0.000 claims 3
- 229910052748 manganese Inorganic materials 0.000 claims 3
- 229910052759 nickel Inorganic materials 0.000 claims 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims 3
- 238000000926 separation method Methods 0.000 claims 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims 2
- 229910002090 carbon oxide Inorganic materials 0.000 claims 2
- 229910001882 dioxygen Inorganic materials 0.000 claims 2
- 230000003993 interaction Effects 0.000 claims 2
- 150000002739 metals Chemical class 0.000 claims 2
- 238000000034 method Methods 0.000 claims 2
- 229910052760 oxygen Inorganic materials 0.000 claims 2
- 239000001301 oxygen Substances 0.000 claims 2
- 238000001556 precipitation Methods 0.000 claims 2
- 239000000047 product Substances 0.000 claims 2
- 238000011084 recovery Methods 0.000 claims 2
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 claims 2
- 239000007795 chemical reaction product Substances 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 238000000605 extraction Methods 0.000 claims 1
- 239000012467 final product Substances 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 229910052697 platinum Inorganic materials 0.000 claims 1
Claims (28)
где p1 выражено в кРа, и ниже (Тм и н + 1000oС), предпочтительно (Тм и н + 50oС), в частности (Тм и н + 25oС) и в любом случае ниже Tr;
восстановление магнийоксидного компонента исходного материала в восстановительной зоне до газообразного металлического магния; испарение газообразного металлического магния из восстановительной зоны и конденсацию газообразного металлического магния в отдельной второй зоне конденсации, расположенной за первой зоной конденсации, при давлении p2 в интервале 0,01 - 1,1 кРа, предпочтительно 0,2 - 0,8 кРа, в частности 0,3 - 0,7 кРа, при температуре Т2 менее чем 638oС, предпочтительно в интервале 200 - 600oС, в частности в интервале 250 - 540oС; и удаление СО, образованного посредством вышеупомянутых процессов восстановления, из второй зоны конденсации и поддержание давления p2 при предварительно выбранном значении путем использовании насоса; посредством чего температурный градиент между первой зоной конденсации и второй зоной конденсации поддерживают настолько большим, насколько это возможно и посредством чего p2 ≤ p1 ≤ pr.1. A method of producing metallic magnesium by carbon-thermal reduction of a starting material selected from the group consisting of magnesium oxide containing minor amounts of oxides of Fe, Si, Ca and Al; natural and industrially obtained magnesium silicate minerals and mixtures thereof, for example, olivine, characterized in that they mix the starting material with carbon in an amount of at least 1 mol C / mol SiO 2 plus at least 1 mol C / mol FeO plus at least 3 mole C / mol Fe 2 O 3 plus up to at least 1 mol C / mol MgO; preferably in an amount of at least 2 mol C / mol SiO 2 plus at least 1 mol C / mol FeO, plus at least 3 mol C / mol Fe 2 O 3 plus at least 1 mol C / mol MgO; in particular, in an amount of at least 3 mol C / mol SiO 2 plus at least 1 mol C / mol FeO plus at least 3 mol C / mol Fe 2 O 3 plus 1 mol C / mol MgO; preferably in an amount of less than 4 mol C / mol SiO 2 plus 2 mol C / mol FeO, plus 4 mol C / mol Fe 2 O 3 plus 2 mol C / mol MgO; heating the mixture in the reduction zone to a temperature of T r in the range of 1400 - 1700 o C, preferably less than 1500 o C, at a pressure p r in the range of 0.01 - 1.75 kPa, preferably 0.2 - 1.1 kPa, particularly 0.3 to 0.7 kPa; reduction of the iron oxide component of the starting material in the reduction zone to iron; the reduction of the silicon dioxide component of the starting material to SiO, which is partially converted in the reduction zone to SiC and the Si and Fe alloy, "Si z Fe", is partially evaporated from the reduction zone and converted to SiC, Si, and / or Mg 2 SiO 4 by reaction with carbon in a separate first condensation zone at a pressure p 1 in the range of 0.01 - 1.1 kPa, preferably 0.2 - 0.8 kPa, in particular 0.3 - 0.7 kPa, at a temperature T 1 higher than
where p 1 is expressed in kPa and below (T m and n + 1000 o C), preferably (T m and n + 50 o C), in particular (T m and n + 25 o C) and in any case below T r ;
reduction of the magnesium oxide component of the starting material in the reduction zone to gaseous magnesium metal; evaporation of gaseous metallic magnesium from the reduction zone and condensation of gaseous metallic magnesium in a separate second condensation zone located behind the first condensation zone at a pressure p 2 in the range of 0.01 - 1.1 kPa, preferably 0.2 - 0.8 kPa, in in particular 0.3 to 0.7 kPa, at a temperature of T 2 less than 638 o C, preferably in the range of 200 to 600 o C, in particular in the range of 250 to 540 o C; and removing CO formed by the above reduction processes from the second condensation zone and maintaining the pressure p 2 at a preselected value by using a pump; whereby the temperature gradient between the first condensation zone and the second condensation zone is kept as large as possible and whereby p 2 ≤ p 1 ≤ p r .
предпочтительно
в частности
0,3 - 1,75 кРа;
восстановление железооксидного компонента исходного материала в реакционной смеси до железа;
восстановление диоксидкремниевого компонента исходного материала до SiO, который частично превращают в восстановительной зоне в SiC и сплав Si и Fe "Siz Fe", частично испаряют из восстановительной зоны и превращают в SiC, Si и/или Mg2 SiO4 путем реакции с углеродом в отдельной первой зоне конденсации при давлении р1, где p1 ≤ pr и температуре Т1 выше, чем
где р1 выражено в кРа, и ниже, чем (Тм и н + 100oС), предпочтительно (Тм и н + 50oС), в частности (Тм и н + 25oС), и в любом случае ниже Tr; восстановление магнийоксидного компонента исходного материала в восстановительной зоне по крайней мере частично до газообразного металлического магния;
испарение газообразного металлического магния из восстановительной зоны и взаимодействие газообразного металлического магния с СО, образованным в восстановительной зоне, до MgO и С и осаждение этих продуктов реакции в виде смеси углерода и оксида магния в отдельной зоне окисления и зоне конденсации, расположенной за первой зоной конденсации, при давлении p2, где p2 ≤ p1, и при температуре T2 в интервале от 638oС до Т1, предпочтительно от 650oС до Т1 - 50, в частности от 800 до 1000oС;
удаление смеси углерода и оксида магния из зоны окисления и конденсации и удаление углерода из углеродного продукта, например посредством окисления; и
удаление части СО, образованного посредством вышеупомянутых способов восстановления, которая не была израсходована при реакции с Mg, из зоны окисления и конденсации и поддержание давления р2 при предварительно выбранном значении путем использования насоса; посредством чего
p2 ≤ p1 ≤ pr.10. A method of producing pure magnesium oxide by carbon-thermal reduction of a starting material selected from the group consisting of magnesium oxide containing minor amounts of Fe, Si, Ca and Al oxides; natural and industrially obtained magnesium silicate minerals and mixtures thereof, for example, olivine, characterized in that they mix the starting material with carbon in an amount of at least 1 mol C / mol SiO 2 plus at least 1 mol C / mol FeO plus at least 3 mole C / mol Fe 2 O 3 plus at least 1 mol C / mol MgO, preferably in an amount of at least 2 mol C / mol SiO 2 plus at least 1 mol C / mol FeO plus at least 3 mol C / mole Fe 2 O 3 plus at least 1 mole C / mole MgO, in particular in an amount of at least 3 mol C / mole SiO 2 plus 1 mole C / mole FeO, plus 3 mole C / mole Fe 2 O 3 plus 1 mole C / mole MgO, preferably in an amount of less than 4 mole C / mole SiO 2 plus 2 mole C / mole FeO plus 4 mol C / mol Fe 2 O 3 plus 2 mol C / mol MgO; heating the mixture in the reduction zone to a temperature T r in the range of 1400 - 1700 o C, preferably less than 1500 o C, at a pressure p r in the range
preferably
in particular
0.3 - 1.75 kPa;
reduction of the iron oxide component of the starting material in the reaction mixture to iron;
the reduction of the silicon dioxide component of the starting material to SiO, which is partially converted to SiC in the reduction zone and the Si and Fe alloy "Si z Fe", is partially evaporated from the reduction zone and converted to SiC, Si and / or Mg 2 SiO 4 by reaction with carbon to separate first condensation zone at a pressure of p 1 , where p 1 ≤ p r and temperature T 1 higher than
where p 1 is expressed in kPa, and lower than (T m and n + 100 ° C), preferably (T m and n + 50 ° C), in particular (T m and n + 25 ° C), and in any case below T r ; reduction of the magnesium oxide component of the starting material in the reduction zone at least partially to gaseous magnesium metal;
evaporation of gaseous metal magnesium from the reduction zone and the interaction of gaseous metal magnesium with CO formed in the reduction zone to MgO and C and the precipitation of these reaction products as a mixture of carbon and magnesium oxide in a separate oxidation zone and condensation zone located behind the first condensation zone, at a pressure of p 2 , where p 2 ≤ p 1 , and at a temperature of T 2 in the range from 638 o C to T 1 , preferably from 650 o C to T 1 to 50, in particular from 800 to 1000 o C;
removing a mixture of carbon and magnesium oxide from the oxidation and condensation zone and removing carbon from the carbon product, for example by oxidation; and
removing a portion of the CO formed by the aforementioned reduction methods that was not consumed by the reaction with Mg from the oxidation and condensation zone and maintaining the pressure p 2 at a preselected value by using a pump; whereby
p 2 ≤ p 1 ≤ p r .
предпочтительно
в частности
0,3 - 1,75 кРа;
- восстановление железооксидного компонента исходного материала в восстановительной зоне до железа; восстановление диоксидкремниевого компонента исходного материала до SiO2, который частично превращают в восстановительной зоне в SiC и сплав Si и Fe, "SizFe", частично испаряют из восстановительной зоны и превращают в SiC, Si и/или Mg2 SiO4 путем взаимодействия с углеродом в отдельной первой зоне конденсации при давлении р1, где p1 ≤ pr и при температуре выше, чем
где p1 выражено в кРа, и ниже (Тм и н + 100oС), предпочтительно (Тм и н + 50oС), в частности (Тм и н + 25oС), и в любом случае ниже Tr; восстановление магнийоксидного компонента исходного материала по крайней мере частично в восстановительной зоне до газообразного металлического магния; испарение газообразного металлического магния из восстановительной зоны и взаимодействие газообразного металлического магния с отдельно добавленным кислородсодержащим газом, например молекулярным кислородом, воздухом, СО2, СО, Н2О и их смесями, до оксида магния и осаждение оксида магния в отдельной зоне окисления и конденсации, расположенной за первой зоной конденсации, при давлении р2, где р2 ≤ р1, и при температуре Т2 в интервале от 638oС до Т1, предпочтительно от 650oС до Т1 - 50, в частности от 800oС до 1000oС; удаление оксида магния из зоны окисления и конденсации и, если необходимо, удаление углерода из удаленного продукта путем окисления; и удаление газов, образованных путем вышеупомянутых процессов восстановления и окисления, и поддержание давления р2 при предварительно выбранном значении путем использования насоса; посредством чего р2 ≤ р1 ≤ pr.11. A method of producing pure magnesium oxide by carbon-thermal reduction of a starting material selected from the group consisting of magnesium oxide containing minor amounts of Fe, Si, Ca and Al oxides; natural and industrially obtained magnesium silicate minerals and mixtures thereof, for example, olivine, characterized in that they mix the starting material with carbon in an amount of at least 1 mol C / mol SiO 2 plus at least 1 mol C / mol FeO plus at least 3 mole C / mol Fe 2 O 3 plus at least 1 mol C / mol MgO, preferably in an amount of at least 2 mol C / mol SiO 2 plus at least 1 mol C / mol FeO plus at least 3 mol C / mol Fe 2 O 3 plus at least 1 mol C / mol MgO, in particular in an amount of at least 3 mol I C / mol SiO 2 plus 1 mol C / mol FeO plus 3 mol C / mol Fe 2 O 3 plus 1 mol C / mol MgO, preferably in an amount of less than 4 mol C / mol SiO 2 plus 2 mol C / mol FeO plus 4 mol C / mol Fe 2 O 3 plus 2 mol C / mol MgO; heating the mixture in the reduction zone to a temperature T r in the range of 1400 - 1700 o C, preferably less than 1500 o C, at a pressure p r in the range
preferably
in particular
0.3 - 1.75 kPa;
- reduction of the iron oxide component of the starting material in the reduction zone to iron; the reduction of the silicon dioxide component of the starting material to SiO 2 , which is partially converted in the reduction zone to SiC and the Si and Fe alloy, "Si z Fe", is partially evaporated from the reduction zone and converted to SiC, Si and / or Mg 2 SiO 4 by reaction with carbon in a separate first condensation zone at a pressure of p 1 , where p 1 ≤ p r and at a temperature higher than
where p 1 is expressed in kPa and below (T m and n + 100 ° C), preferably (T m and n + 50 ° C), in particular (T m and n + 25 ° C), and in any case below T r ; reduction of the magnesium oxide component of the starting material at least partially in the reduction zone to gaseous metallic magnesium; evaporation of gaseous metallic magnesium from the reduction zone and the interaction of gaseous metallic magnesium with separately added oxygen-containing gas, for example molecular oxygen, air, СО 2 , СО, Н 2 О and their mixtures, to magnesium oxide and precipitation of magnesium oxide in a separate oxidation and condensation zone, located behind the first condensation zone, at a pressure of p 2 , where p 2 ≤ p 1 , and at a temperature of T 2 in the range from 638 o C to T 1 , preferably from 650 o C to T 1 to 50, in particular from 800 o C up to 1000 o C; removing magnesium oxide from the oxidation and condensation zone and, if necessary, removing carbon from the removed product by oxidation; and removing gases formed by the aforementioned reduction and oxidation processes, and maintaining the pressure p 2 at a preselected value by using a pump; whereby p 2 ≤ p 1 ≤ p r .
предпочтительно при 1700o - 1750oС и около 101 кРа (1 атм), посредством чего железооксидный компонент исходного материала восстанавливают в реакционной смеси до железа; диоксидкремниевый компонент исходного материала по крайней мере частично превращают в реакционной зоне в SiC и сплав Si и Fe "Siz Fe"; магнийоксидный компонент исходного материала превращают по крайней мере частично в оксид магния (периклаз); удаление по существу полностью превращенной смеси в качестве конечного продукта из реакционной зоны; удаление СО, образованного посредством вышеупомянутых способов восстановления, из реакционной зоны и поддержание давления pr в реакционной зоне при предварительно выбранном значении путем использования насоса; и по желанию осаждение смеси MgO, Mg2 SiO4, Si и SiC из газа, удаленного из реакционной зоны в отдельной зоне конденсации, расположенной перед насосом, при давлении р1 ≤ pr и при температуре в интервале 800 - 1500oС и извлечение осажденного материала.20. A method of processing a starting material selected from the group consisting of magnesium oxide containing small amounts of oxides of Fe, Si, Ca and Al, and industrially produced magnesium silicate minerals and mixtures thereof, for example olivine, characterized in that the starting material is mixed with carbon in an amount of at least 1 mol C / mol of SiO 2 plus at least 1 mol C / mol of FeO plus at least 3 mol C / mol of Fe 2 O 3 plus at least 1 mol C / mol of MgO, preferably in an amount of at least 2 mol C / mol SiO 2 plus at least at least 1 mol C / mol FeO plus at least 3 mol C / mol Fe 2 O 3 plus at least 1 mol C / mol MgO, in particular in an amount of at least 3 mol C / mol SiO 2 plus 1 mol C / mol FeO plus 3 mol C / mol Fe 2 O 3 plus 1 mol C / mol MgO, preferably in an amount of less than 4 mol C / mol SiO 2 plus 2 mol C / mol FeO plus 4 mol C / mol Fe 2 O 3 plus 2 mol C / mol MgO, heating the mixture in the reduction zone to a temperature T r in the range of 1400 - 1800 o C, preferably less than 1700 o C, at a pressure p r in the range
preferably at 1700 ° - 1750 ° C and about 101 kPa (1 atm), whereby the iron oxide component of the starting material is reduced in the reaction mixture to iron; the silicon dioxide component of the starting material is at least partially converted in the reaction zone to SiC and the Si and Fe alloy “Si z Fe”; the magnesium oxide component of the starting material is converted at least partially to magnesium oxide (periclase); removing the substantially completely converted mixture as a final product from the reaction zone; removing CO formed by the aforementioned reduction methods from the reaction zone and maintaining the pressure p r in the reaction zone at a preselected value by using a pump; and optionally deposition of a mixture of MgO, Mg 2 SiO 4 , Si and SiC from a gas removed from the reaction zone in a separate condensation zone located in front of the pump at a pressure of p 1 ≤ p r and at a temperature in the range of 800 - 1500 o C and extraction precipitated material.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CZ19951253A CZ288531B6 (en) | 1992-11-16 | 1992-11-16 | Process for preparing metallic magnesium, magnesium oxide or refractory material |
PCT/DK1992/000339 WO1994011539A1 (en) | 1992-11-16 | 1992-11-16 | A method of producing metallic magnesium, magnesium oxide or a refractory material |
CA002149442A CA2149442C (en) | 1992-11-16 | 1992-11-16 | A method of producing metallic magnesium, magnesium oxide or a refractory material |
Publications (2)
Publication Number | Publication Date |
---|---|
RU95114446A true RU95114446A (en) | 1997-07-10 |
RU2109078C1 RU2109078C1 (en) | 1998-04-20 |
Family
ID=27170015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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RU95114446A RU2109078C1 (en) | 1992-11-16 | 1992-11-16 | Method for producing metallic magnesium, method for producing pure magnesium oxide (versions) and method for processing initial material |
Country Status (14)
Country | Link |
---|---|
US (1) | US5803947A (en) |
EP (1) | EP0668935B1 (en) |
JP (1) | JP3612330B2 (en) |
AT (1) | ATE163686T1 (en) |
AU (1) | AU680403B2 (en) |
BR (1) | BR9207177A (en) |
CA (1) | CA2149442C (en) |
DE (1) | DE69224673T2 (en) |
DK (1) | DK0668935T3 (en) |
ES (1) | ES2115049T3 (en) |
NO (1) | NO306959B1 (en) |
RU (1) | RU2109078C1 (en) |
SK (1) | SK282266B6 (en) |
WO (1) | WO1994011539A1 (en) |
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JP3331408B2 (en) * | 1999-02-24 | 2002-10-07 | メタルサイエンス有限会社 | A method for measuring magnesium content in molten aluminum alloy |
US6528033B1 (en) | 2000-01-18 | 2003-03-04 | Valence Technology, Inc. | Method of making lithium-containing materials |
US6645452B1 (en) * | 2000-11-28 | 2003-11-11 | Valence Technology, Inc. | Methods of making lithium metal cathode active materials |
US6720112B2 (en) | 2001-10-02 | 2004-04-13 | Valence Technology, Inc. | Lithium cell based on lithiated transition metal titanates |
US6706445B2 (en) | 2001-10-02 | 2004-03-16 | Valence Technology, Inc. | Synthesis of lithiated transition metal titanates for lithium cells |
US20030073003A1 (en) * | 2001-10-09 | 2003-04-17 | Jeremy Barker | Molybdenum oxide based cathode active materials |
US6908710B2 (en) * | 2001-10-09 | 2005-06-21 | Valence Technology, Inc. | Lithiated molybdenum oxide active materials |
JP3857589B2 (en) * | 2002-01-28 | 2006-12-13 | 同和鉱業株式会社 | High-purity metal purification method and purification apparatus |
US7666250B1 (en) * | 2003-11-12 | 2010-02-23 | Ut-Battelle, Llc | Production of magnesium metal |
US8152895B2 (en) * | 2003-04-23 | 2012-04-10 | Ut-Battelle, Llc | Production of magnesium metal |
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US10400309B2 (en) * | 2013-08-29 | 2019-09-03 | The Regents Of The University Of Colorado, A Body Corporate | Carbothermal reduction reactor system, components thereof, and methods of using same |
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US2257910A (en) * | 1940-02-03 | 1941-10-07 | Dow Chemical Co | Process of condensing magnesium vapors |
US2268779A (en) * | 1941-01-30 | 1942-01-06 | Electric Heating Equipment Com | Method for the recovery of metallic magnesium from mixtures of elemental magnesium and carbon monoxide, produced by the carboniferous reduction, at high temperatures, of magnesium oxide |
US2372571A (en) * | 1943-10-19 | 1945-03-27 | North Carolina Magnesium Dev C | Process for manufacturing metallic magnesium from magnesium silicates |
US2379576A (en) * | 1944-08-18 | 1945-07-03 | North Carolina Magnesium Dev C | Process for producing metallic magnesium from magnesium silicates |
US2570232A (en) * | 1945-06-26 | 1951-10-09 | North Carolina Magnesium Dev C | Continuous process for recovery of magnesium |
US2527722A (en) * | 1946-05-27 | 1950-10-31 | North Carolina Magnesium Dev C | Production of magnesium |
US2527724A (en) * | 1946-05-27 | 1950-10-31 | North Carolina Magnesium Dev C | Production of magnesium |
US2582119A (en) * | 1946-09-24 | 1952-01-08 | North Carolina Magnesium Dev C | Production of magnesium |
US2582120A (en) * | 1946-09-24 | 1952-01-08 | North Carolina Magnesium Dev C | Production of magnesium |
US2582129A (en) * | 1948-09-13 | 1952-01-08 | Nat Aluminate Corp | Prevention of corrosion in aqueous systems |
JPS5322810A (en) * | 1976-08-16 | 1978-03-02 | Fumio Hori | Method and apparatus for producing metal mg or ca by carbon reduction |
US4200264A (en) * | 1976-08-16 | 1980-04-29 | Fumio Hori | Apparatus for obtaining Mg and Ca through carbon reduction |
JPS57185938A (en) * | 1981-05-06 | 1982-11-16 | Toyota Motor Corp | Manufacture of metallic magnesium |
AU8857782A (en) * | 1981-09-21 | 1983-03-31 | Julian M. Avery | Process for recovering magnesium |
JPS59213619A (en) * | 1983-05-20 | 1984-12-03 | Ube Ind Ltd | Preparation of fine magnesia powder having high purity |
US5383953A (en) * | 1994-02-03 | 1995-01-24 | Aluminum Company Of America | Method of producing magnesium vapor at atmospheric pressure |
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1992
- 1992-11-16 WO PCT/DK1992/000339 patent/WO1994011539A1/en active IP Right Grant
- 1992-11-16 US US08/436,213 patent/US5803947A/en not_active Expired - Lifetime
- 1992-11-16 ES ES93901693T patent/ES2115049T3/en not_active Expired - Lifetime
- 1992-11-16 DK DK93901693T patent/DK0668935T3/en active
- 1992-11-16 BR BR9207177A patent/BR9207177A/en not_active IP Right Cessation
- 1992-11-16 AU AU32549/93A patent/AU680403B2/en not_active Expired
- 1992-11-16 EP EP93901693A patent/EP0668935B1/en not_active Expired - Lifetime
- 1992-11-16 RU RU95114446A patent/RU2109078C1/en active
- 1992-11-16 SK SK631-95A patent/SK282266B6/en not_active IP Right Cessation
- 1992-11-16 JP JP51160494A patent/JP3612330B2/en not_active Expired - Fee Related
- 1992-11-16 CA CA002149442A patent/CA2149442C/en not_active Expired - Lifetime
- 1992-11-16 AT AT93901693T patent/ATE163686T1/en active
- 1992-11-16 DE DE69224673T patent/DE69224673T2/en not_active Expired - Lifetime
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1995
- 1995-05-15 NO NO951917A patent/NO306959B1/en not_active IP Right Cessation
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