CN1304613C - Vacuum carbon heat reduction aluminium smelting method - Google Patents
Vacuum carbon heat reduction aluminium smelting method Download PDFInfo
- Publication number
- CN1304613C CN1304613C CNB2005100110676A CN200510011067A CN1304613C CN 1304613 C CN1304613 C CN 1304613C CN B2005100110676 A CNB2005100110676 A CN B2005100110676A CN 200510011067 A CN200510011067 A CN 200510011067A CN 1304613 C CN1304613 C CN 1304613C
- Authority
- CN
- China
- Prior art keywords
- aluminum
- crucible
- temperature
- vacuum
- gas
- 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 - Fee Related
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 47
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims description 19
- 238000003723 Smelting Methods 0.000 title claims description 6
- 229910052799 carbon Inorganic materials 0.000 title claims description 6
- 239000004411 aluminium Substances 0.000 title abstract description 32
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims abstract description 77
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000009833 condensation Methods 0.000 claims abstract description 11
- 230000005494 condensation Effects 0.000 claims abstract description 11
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 9
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 8
- 230000035484 reaction time Effects 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 8
- 229910001570 bauxite Inorganic materials 0.000 claims description 7
- 238000005245 sintering Methods 0.000 claims description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 6
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 6
- 239000003245 coal Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 239000005995 Aluminium silicate Substances 0.000 claims description 4
- 235000012211 aluminium silicate Nutrition 0.000 claims description 4
- 239000003610 charcoal Substances 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 4
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000012798 spherical particle Substances 0.000 claims description 4
- 239000010433 feldspar Substances 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000000571 coke Substances 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims 4
- IZMHKHHRLNWLMK-UHFFFAOYSA-M chloridoaluminium Chemical compound Cl[Al] IZMHKHHRLNWLMK-UHFFFAOYSA-M 0.000 claims 3
- 229910001338 liquidmetal Inorganic materials 0.000 claims 2
- 230000008020 evaporation Effects 0.000 claims 1
- 238000000227 grinding Methods 0.000 claims 1
- 239000004615 ingredient Substances 0.000 claims 1
- 238000002156 mixing Methods 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 6
- 239000012320 chlorinating reagent Substances 0.000 abstract 1
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 238000007670 refining Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 19
- 239000010439 graphite Substances 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 9
- 229910002804 graphite Inorganic materials 0.000 description 8
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 8
- 239000002585 base Substances 0.000 description 6
- 241000209456 Plumbago Species 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 5
- 238000009866 aluminium metallurgy Methods 0.000 description 4
- -1 aluminum compound Chemical class 0.000 description 4
- 238000004821 distillation Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910001610 cryolite Inorganic materials 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
Images
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention provides a method for refining metallic aluminium from alumina ore by vacuum carbothermic reduction. Alumina or alumina containing ore is adopted as a raw material which is accompanied with a reducing agent and a chlorinating agent; AlCl is obtained in an internal heating vacuum furnace under the conditions of controlled pressure of 5 to 400Pa, reduction temperature of 1270 to 1570DEG C, and reaction time of 100 to 120 minutes; the AlCl is resolved into the metallic aluminium and aluminium trichloride when the temperature lowers, the condensation decomposition temperature of the AlCl is less than 900DEG C, the purity of the obtained metallic aluminium is greater than 95 percent, and the recovery rate of the aluminium trichloride reaches greater than 78 percent. The present invention has the advantages of short process flow, low cost and less environmental pollution.
Description
One, affiliated technical field: vacuum metallurgy.
Two, background technology:
The history in existing more than 100 year of the production of aluminium, main production methods is that the cryolite fused salt electrolytic process obtains metallic aluminium from alumina eltrolysis, effort through more than 100 years, people are obtaining a lot of improvement aspect the production process of the production of aluminum oxide and electrolytic aluminum, but still there is a lot of problems in the production process of whole aluminium up to now, as: pollution is big, energy consumption is high, investment is big, the production cost of raw alumina is high.Therefore all have a lot of researchers being engaged in non-electrolytic aluminium metallurgy Study on new method, one of them is the aluminium metallurgy of sub-compound decomposition method all the time.
About low price halogenide decomposition method direct extracting metals aluminium from aluminum oxide and salic mineral, its principle is with after reductive agent mixes with aluminum oxide or salic mineral, at high temperature react and obtain aluminum compound and carbon monoxide at a low price with trivalent aluminum compound, aluminum compound generation decomposition obtains metallic aluminium and trivalent aluminum compound at a low price under lower temperature, and other composition is then stayed in the reaction slag.Thus metallic aluminium is restored from aluminum oxide, or from ore, metallic aluminium is extract, specifically can represent with following reaction equation:
The total reaction equation:
The Donald E.Othmer of the U.S. in 1974 discloses in patent U.S.Pat.No.3793003 and used aluminum chloride decomposition method aluminium metallurgy at a low price under a kind of normal pressure from salic raw material, he at first has the sludge of following phosphate rock production and producing by selected raw material, contains Al in this sludge
2O
318.70%, SiO
231.60%, secondly be resinous shale, this resinous shale consist of Al
2O
330.1%, SiO
261.1%, Fe
2O
35.0%, in addition, he is a raw material with resulting red mud in the aluminum oxide production process also, this red mud consist of Al
2O
326%, SiO
28.5%, Fe
2O
350.5%, he has chlorine, aluminum chloride, tetracol phenixin for used chlorizating agent.
U.S. Adams.Jr. in 1980 and Clyde M disclose in U.S.Pat.No.4188207 salic raw material (comprising bauxite, clay, kaolin etc.), calcium chloride and reductive agent (suggestion is carbon and silicon-containing compound) have been mixed, be heated to 1600 ℃ then, obtain AlCl gas, it is led to condensing zone condensation decomposition obtain metallic aluminium and AlCl
3And CO gas, the AlCl that obtains
3Again obtain calcium chloride with calcium carbonate reaction, just can recycle, can certainly not circulate, but with gasiform AlCl
3Directly be condensed into solid, as a kind of byproduct of this method.
1984, in United States Patent (USP) 4430120, people such as Fruchter are at Donald F.Othmer and Adams.Jr., people's such as Clyde M basis is further studied, they obtain AlCl gas with salic raw material and reductive agent carbon and NaCl reaction under 1400-1800 ℃ temperature, AlCl gas carries out the rapid condensation decomposition with the method for Donald F.Othmer.The external at present existing patent report that from bauxite, extracts metallic aluminium with the sub-compound method, these sub-compounds comprise low price sulphide, lower chloride, keen price fluoride etc., even if but can see up to now abroad this method industrial applications that yet is unrealized, it is of great value therefore to continue research.
Three, summary of the invention
1, the method that the purpose of this invention is to provide a kind of vacuum carbon heat reduction aluminium smelting in vacuum oven, is decomposed carbothermic method direct reduction preparation metallic aluminium of one step from aluminum-containing raw material with halogenide at a low price, the production efficiency of raising aluminium metallurgy, cuts down the consumption of energy; From raw materials for production, the raw material of this method not only is confined to higher-grade bauxite, and it also can adopt kaolin, clay, flyash, red mud, feldspar etc. as raw material, thereby has enlarged the scope of resource that aluminium is produced.
2, the present invention realizes by following technical scheme
Fig. 1 is for realizing the composition structure iron of the vacuum oven that the present invention is used, this vacuum oven the applicant has applied for utility model patent on October 18th, 2005, it comprises sublimer 1, furnace shell 2, gas tip 3, plumbago crucible 4, graphite condensate pans 5, cooling water outlet pipe 6, bell thermopair tapered sleeve 7, bell 8, furnace shell thermopair tapered sleeve 9, graphite heater 10, graphite muff 11, heating element base 12, water cooled electrode 13, body of heater bottom 14, gas inlet tube 15, inserts the heating jacket 17 of thermometer mouth 16, distillation device.Distillation device 1 is connected on the body of heater bottom 14 by flange and connecting rod, vacuum oven furnace shell 2 is connected on the body of heater bottom 14 by flange, gas tip 3 tips upside down on the bossing of plumbago crucible 4 inside, the condensation portion 5 of four condensate pans compositions is placed on the plumbago crucible 4, cooling water outlet 6 is welded in the top of vacuum oven furnace shell 2, bell thermopair tapered sleeve 7 is welded in its medullary ray and stove central lines on the bell 8, bell 8 usefulness flanges are connected on the vacuum oven furnace shell 2, furnace shell thermopair tapered sleeve 9 is welded in a side of vacuum oven furnace shell 2, the Kong Tonggao at its medullary ray height and orlop condensate pans middle part, graphite heater 10 is placed on the heating element base 12, graphite muff 11 is placed on the heating element base 12 by its base, be separated by with insulating material between the two, heating element base 12 is by the top of two fixed by nut in water cooled electrode, water cooled electrode 13 leans on two fixed by nut on body of heater bottom 14, gas inlet tube 15 tops link to each other with plumbago crucible 4 by screw thread, insert on the body of heater bottom 14 bottom, plug in thermometer mouth 16 and be welded in the middle part of the side of distillation device 1, heating jacket 17 is enclosed within the periphery of distillation device 1.
Invention is finished according to the following steps
1) raw material and prescription thereof
1. salic raw material is one or more in bauxite, kaolin, clay, flyash, red mud, the feldspar;
2. carbonaceous reducing agent is coal, coke or charcoal;
3. chlorizating agent is an aluminum chloride.
4. prepare burden: salic raw material: carbonaceous reducing agent: aluminum chloride=1: 0.4-0.6: 1.5-2.0;
2) salic raw material and carbonaceous reducing agent are worn into 100 ± 20 purpose fine powders separately, mix;
3) the above-mentioned material that mixes is made the spherical particle of diameter 0.1-0.5mm after, put into sintering oven, be 300 ± 50 ℃ in temperature, sintering 30-35 minute, treat the cooling of this material after, take out and place the crucible of above-mentioned vacuum oven;
4) heat up: control vacuum oven internal pressure is 5-400Pa, when the temperature of reaction crucible reaches 1270 ℃～1570 ℃, the aluminum chloride gas that feeding measures, this aluminum chloride gas can feed with following dual mode: one, the prior aluminum chloride sublimer of the aluminum chloride solid being put into equipment shown in Figure 1, when reaching 1270 ℃～1570 ℃ of predetermined temperature Deng reaction crucible, the heating sublimation device, allow aluminum chloride distil and become gaseous state, enter crucible from the bottom of crucible, react with the material in the crucible, produce monochlor(in)ate aluminium and CO (carbon monoxide converter) gas; They are two years old, lay down the sublimer part of vacuum oven shown in Figure 1, directly vacuum oven is connected with other aluminum chloride gas generation apparatus, when treating that the temperature of crucible reaches 1270 ℃～1570 ℃ in the vacuum oven, directly feed aluminum chloride gas toward crucible bottom, reacting in crucible obtains monochlor(in)ate aluminium and CO (carbon monoxide converter) gas, and the reaction times is 100-120 minute;
5) monochlor(in)ate aluminium gas is under the situation that vacuum furnace top vacuumizes, along the evaporative condenser dish that places on the crucible, walk from the bottom up, when the temperature for the treatment of this gas is as cold as below 900 ℃, decomposition reaction takes place, obtain liquid metallic aluminium and aluminum chloride gas, liquid metallic aluminium is collected on the evaporative condenser dish of relevant temperature, and the gasiform aluminum chloride continues up to walk.Cold on less than 50 ℃ evaporative condenser dish in temperature is solid;
6) after reaction is finished, disconnect the heating power supply of vacuum oven, stop heating, when treating that furnace temperature is as cold as room temperature, stop to vacuumize, when treating that furnace pressure reaches normal pressure, blow-on, collect aluminum chloride from the evaporative condenser dish of low temperature part, therefrom the evaporative condenser dish of isothermal segment is collected metallic aluminium, the residue that obtains reacting from the crucible of high-temperature part.
3, present technique is compared the advantage that is had with existing patent of invention:
1), reaction of the present invention carries out under vacuum condition owing to carry out under vacuum, the first step generates the origin temp of reaction of monochlor(in)ate aluminium than low under the normal pressure, reacts when temperature reaches 1270 ℃ and just can take place;
2), resulting metal purity height, the quality percentage composition of aluminium can be up to more than 95%; The rate of recovery height of aluminum chloride, the aluminum chloride more than 78% can reclaim
3), technology is simple, energy consumption is low, pollutes little.
Four, description of drawings: Fig. 1 is the composition structure iron of the used vacuum oven of realization the present invention, and 1 is that sublimer, 2 is that furnace shell, 3 is that gas tip, 4 is that plumbago crucible, 5 is that graphite condensate pans, 6 is that cooling water outlet pipe, 7 is that bell thermopair tapered sleeve, 8 is that bell, 9 is that furnace shell thermopair tapered sleeve, 10 is that graphite heater, 11 is that graphite muff, 12 is that heating element base, 13 is that water cooled electrode, 14 is that body of heater bottom, 15 is that gas inlet tube, 16 is that plug in thermometer mouth, 17 is the device heating jacket that distils among the figure.
Five, embodiment:
Embodiment one
With commercial alumina 1.5kg is raw material, concrete composition sees Table 1, with the 0.6kg coal is reductive agent, with the 2.3kg aluminum chloride is chlorizating agent, aluminum oxide and coal are worn into 100 ± 20 purpose fine powders separately, mix, and make the spherical particle of diameter less than 0.1-0.5mm, this material particles is put in the sintering oven, in temperature is 300 ± 50 ℃ of following sintering 30 minutes, take out this particle, and be put in the vacuum oven, control vacuum oven internal pressure is 5-40Pa, when temperature reaches 1300 ℃, aluminum chloride in the sublimer that measures, allowing aluminum chloride be gaseous state runs out of, and entering the reaction zone that holds aluminum oxide and coal, the three reacted 100 minutes, obtained AlCl gas, this gas enters condensate pans under the situation that vacuum furnace top vacuumizes, and obtain condensation, when the temperature of this gas is as cold as below 900 ℃, condensation is decomposed into metallic aluminium and gaseous state aluminum chloride, al dichloride is further walked along condensate pans toward the lower condensate pans of temperature, and be in 50 ℃ and the following condensate pans under the condensation in temperature, finally obtaining the 0.52kg metallic aluminium, the composition of metallic aluminium sees Table 2 and aluminum chloride and reaction residues.Wherein the purity of resulting metallic aluminium reaches 98.46%, the rate of recovery 70%, and the rate of recovery of aluminum chloride reaches 80%, and this part aluminum chloride can be recycled.
The composition of table 1 commercial alumina (wt%)
| Composition | Al 2O 3 | SiO 2 | Fe 2O 3 | TiO 2 |
| wt％ | 92.99 | 0.61 | 0.047 | ＜0.5 |
The composition of table 2 metallic aluminium (wt%)
| Composition | Fe％ | Si％ | Al％ | Ti％ |
| wt％ | 0.051 | 0.29 | 98.46 | Less than 0.5 |
Embodiment two:
With bauxite 2kg is raw material, concrete composition sees Table 3, with the 0.9kg charcoal is reductive agent, with the 3.kg aluminum chloride is chlorizating agent, aluminum oxide and charcoal are worn into 100 ± 20 purpose fine powders separately, mix, and make the spherical particle of diameter less than 0.1-0.5mm, this material particles is put in the sintering oven, in temperature is 300 ± 50 ℃ of following sintering 35 minutes, take out this particle, and be put in the vacuum oven, control vacuum oven internal pressure is 50-100Pa, heat up, when temperature reaches 1500 ℃, feed aluminum chloride gas, go into reaction zone, the three reacted 120 minutes, obtained AlCl gas, and gas enters condensate pans, and obtain condensation, when the temperature of this gas is as cold as below 900 ℃, condensation is decomposed into metallic aluminium and gaseous state aluminum chloride, and aluminum chloride is further walked along condensate pans toward the lower condensate pans of temperature, and be in 50 ℃ and the following condensate pans under the condensation in temperature, obtain metallic aluminium 0.54kg, composition sees Table 4, and its purity reaches 95.82%, the rate of recovery 68% and aluminum chloride and reaction residues, the rate of recovery of aluminum chloride reaches 80%, and aluminum chloride can be recycled.
The composition (wt%) of table 3 raw material bauxite
| Al 2O 3％ | SiO 2％ | Fe 2O 3％ | TiO 2％ |
| 75.0 | 3.13 | 1.00 | 4.26 |
The composition of the resulting metallic aluminium of table 4 (wt%)
| Composition | Al | Al 2O 3 | C | Fe 2O 3 | TiO | Fe 3C | TiC | SiC | Si | |
| (wt％) | 95.82 | ＜1.00 | 1.58 | - | - | 0.51 | 0.83 | 1.26 | - | 1.00 |
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100110676A CN1304613C (en) | 2005-10-18 | 2005-10-18 | Vacuum carbon heat reduction aluminium smelting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100110676A CN1304613C (en) | 2005-10-18 | 2005-10-18 | Vacuum carbon heat reduction aluminium smelting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1752234A CN1752234A (en) | 2006-03-29 |
| CN1304613C true CN1304613C (en) | 2007-03-14 |
Family
ID=36679239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100110676A Expired - Fee Related CN1304613C (en) | 2005-10-18 | 2005-10-18 | Vacuum carbon heat reduction aluminium smelting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1304613C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2121521A4 (en) * | 2007-01-02 | 2011-09-28 | Thermical Ip Pty Ltd | Carbothermic processes |
| CN101255503B (en) * | 2008-03-24 | 2013-05-22 | 贾建立 | Method for mining metallurgy with coproduction of metal aluminium, silicon, acetylene and coal gas |
| WO2009135269A1 (en) * | 2008-05-09 | 2009-11-12 | Thermical Ip Pty Ltd | Carbothermic processes |
| CN101898895B (en) * | 2010-07-13 | 2012-11-28 | 武汉科技大学 | Nanocrystalline spinel-carbon composite powder and preparation method thereof |
| CN102491394A (en) * | 2011-11-22 | 2012-06-13 | 中国铝业股份有限公司 | Method for producing aluminum chloride by using fly ash |
| CN105568014A (en) * | 2014-10-13 | 2016-05-11 | 焦作市圣昊铝业有限公司 | Method for promoting slag-aluminum separation during smelting of aluminum alloy |
| CN104988335B (en) * | 2015-06-17 | 2018-02-09 | 昆明理工大学 | A kind of method for preparing metallic aluminium with alumina carbon tropical resources vacuum thermal decomposition |
| CN105567969B (en) * | 2015-12-17 | 2018-06-08 | 于洪喜 | Microwave carbon method process for smelting magnesium |
| CN109055753A (en) * | 2018-07-27 | 2018-12-21 | 昆明理工大学 | A kind of method that alumina carbon thermal reduction prepares metallic aluminium |
| CN109518004B (en) * | 2018-11-26 | 2019-10-29 | 昆明理工大学 | A kind of method that carbon thermal reduction prepares metallic aluminium |
| CN109852799A (en) * | 2019-04-11 | 2019-06-07 | 昆明理工大学 | A kind of bauxite prepares metallic aluminium and the method for SiC |
| TWI769913B (en) | 2021-08-24 | 2022-07-01 | 財團法人工業技術研究院 | Ceramic composite and method of preparing the same |
| CN115786705A (en) * | 2022-12-07 | 2023-03-14 | 嘉兴中科海石合金技术有限公司 | Aluminium oxide vacuum electric heating aluminium smelting method adopting molten metal to absorb aluminium vapor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292037A (en) * | 1998-02-26 | 2001-04-18 | 诺尔斯海德公司 | Method for production of aluminium |
| US6440193B1 (en) * | 2001-05-21 | 2002-08-27 | Alcoa Inc. | Method and reactor for production of aluminum by carbothermic reduction of alumina |
-
2005
- 2005-10-18 CN CNB2005100110676A patent/CN1304613C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292037A (en) * | 1998-02-26 | 2001-04-18 | 诺尔斯海德公司 | Method for production of aluminium |
| US6440193B1 (en) * | 2001-05-21 | 2002-08-27 | Alcoa Inc. | Method and reactor for production of aluminum by carbothermic reduction of alumina |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1752234A (en) | 2006-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1304613C (en) | Vacuum carbon heat reduction aluminium smelting method | |
| CN103003474B (en) | Carbon body, the method for producing carbon body and uses thereof | |
| EP3252014B1 (en) | System and method for purifying and preparing high-purity vanadium pentoxide powder | |
| AU2016212451B2 (en) | System and method for producing high-purity divanadium pentoxide powder | |
| EP3243798B1 (en) | System and method for preparing high-purity divanadium pentoxide powder | |
| GB2078698A (en) | Process for the preparation of an intermediate containing silicon dioxide and carbon | |
| CN108862380A (en) | The preparation method of zirconium chloride | |
| CN102807245A (en) | Method for preparing anhydrous aluminum trichloride from fly ash | |
| CN106241845B (en) | A kind of ultrapure ball-aluminium oxide powder preparation method | |
| CN101660059A (en) | Method for extracting metallic aluminium from aluminum oxide by vacuum carbothermal reduction | |
| CN1769505A (en) | Method for Extracting Metal Magnesium by Vacuum Coal Thermal Reduction of Magnesium Ore | |
| CN109734128A (en) | Zircon sand chlorination prepares the process of zirconium chloride by-produced tetrachlorosilane | |
| CN104609375A (en) | Nano oxide composite powder and preparation method | |
| CN106756068A (en) | A kind of method that aluminium is extracted in the ash from aluminium | |
| CN103896332A (en) | Method and system for preparing titanium dioxide | |
| US1430454A (en) | Chloridizing process and apparatus | |
| CN108910928A (en) | Co-production method of two metal chlorides and two metal chlorides | |
| JPS5860609A (en) | Preparation of high purity sic | |
| De Beauchamp | Preparation of Anhydrous Aluminum Chloride | |
| US2387205A (en) | Method of making beryllium fluoride | |
| JPS5918394A (en) | Heat transfer tube for heat recovery in coke riser tube | |
| US2390531A (en) | Process of manufacturing metallic magnesium | |
| Liu et al. | Migration behavior of Pb and Bi impurities during industrial silicon smelting | |
| CN117185329A (en) | A method of combining microsilica powder with carbon chlorination to achieve zero-emission comprehensive utilization of microsilica powder | |
| Yemel'yanov et al. | Production and Physical Metallurgy of Pure Metals--Part III,-USSR |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070314 Termination date: 20091118 |