CN100465350C - Method of preparing aluminium-iron base alloy in electrolytic tank using iron and its alloy as anode - Google Patents
Method of preparing aluminium-iron base alloy in electrolytic tank using iron and its alloy as anode Download PDFInfo
- Publication number
- CN100465350C CN100465350C CNB2005100467382A CN200510046738A CN100465350C CN 100465350 C CN100465350 C CN 100465350C CN B2005100467382 A CNB2005100467382 A CN B2005100467382A CN 200510046738 A CN200510046738 A CN 200510046738A CN 100465350 C CN100465350 C CN 100465350C
- Authority
- CN
- China
- Prior art keywords
- iron
- alloy
- anode
- aluminium
- ferrous
- 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
Images
Abstract
The invention relates to a method to make aluminum-iron alloy in electro-bath using iron and its alloy as anode. The anode material uses pure iron or the iron base alloy like cast iron, carbon steel, and alloy steel; the electrolyte is mainly 95-97 wt% cryolite, 3-5wt% Al2O3, and 0-1 wt% iron base oxide. The product is aluminum-iron alloy. The invention solves the problems caused by using carbon as anode.
Description
One, technical field: the present invention relates to Non-ferrous Metallurgy fused salt electrolysis field, mainly developing a kind of is that anode prepares aluminium-ferrous alloy and preparation method thereof in electrolyzer with iron and alloy thereof, and its principal feature anodic product is an oxygen.
Two, background technology: at present, preparation aluminium-ferrous alloy generally adopts two kinds of methods, and promptly coke hot reducing method and metallic aluminium and iron are to the method for mixing, and these two kinds of methods give off a large amount of CO
2, cause a large amount of energy dissipations.
According to statistics, average steel per ton needs 0.8kg aluminium to make reductor, and then the whole world is annual at present produces hundred million tons of the about 8-10 of steel, so the year consumption aluminium amount on the Iron And Steel Industry reaches 650,000 tons at least.Hall-Ai Lufa that the metal current aluminium electrolytic industry adopts, anode all is carbon annode (also being graphite anode), when electrolysis, anode carbon is oxidized and consume, and wastes a large amount of high grade coke, refinery coke; And discharge a large amount of greenhouse gases and toxic gas, as CF
4, C
2F
6, PAH polynuclear aromatics (generation of anode production process), volatile organism VOC, HF, SO
x, COS and NO
xAnode change is frequent, and it is big to change anodic labour intensity.
Three, summary of the invention:
1, goal of the invention: the invention provides a kind of is anode prepares aluminium-ferrous alloy in electrolyzer method with iron and alloy thereof, and its purpose is to solve with carbon anode and participates in electrolytic reaction and cause the obnoxious flavour contaminate environment, consume a large amount of energy and problem that aspect such as reduce production costs exists.
2, technical scheme: the present invention comes to be realized by the following technical programs:
A kind of is anode prepares aluminium-ferrous alloy in electrolyzer preparation method with iron and alloy thereof, it is characterized in that: it is that single pure iron or cast iron, carbon steel, steel alloy, ferrous alloy constitute that this method adopts with anode material; With single pure iron or ferrous alloy is anode, and ionogen is mainly the sodium aluminum fluoride of 95～97wt%, the Al of 3～5wt%
2O
3, preparing product is aluminium-ferrous alloy.
The iron-based oxide compound that also has 0～1wt% in the ionogen.
Press the required iron-holder difference in the ferroaluminium, in electrolyzer, add the commercial-purity aluminium of different content in advance,, and prevent that metallic iron or ferro-aluminum intermetallic compound from forming crust at bottom of electrolytic tank so that metallic iron fuses into aluminium liquid.
Iron-based oxide compound in the ionogen mainly includes one or more in ferric oxide, iron protoxide, Z 250, rhombohedral iron ore, magnetite, ferro-aluminum ore deposit, red mud and the ferrous manganese ore.
3, advantage and effect: the present invention prepares aluminum-iron alloy and adopts inert anode, and will reduce greenhouse gases CO global every year
2Discharge 1,000,000 tons of (1.65kg CO
2/ kg Al), reduce CO, PAH obnoxious flavour and carcinogenic substance CF such as (polynuclear aromaticss) in a large number
4And C
2F
6Discharging, discharge a large amount of O
225-30 ten thousand tons of charcoal consumptions will be saved (by anode carbon consumption 400～500kg/tAl) every year in the whole world; The industry of part electrolytic aluminum will be transformed into environmental type by contamination type, can also produce economic benefit, as reduce production costs, but the also consumption of labor savings be raised labour efficiency.
Four, description of drawings: accompanying drawing 1 is invention electrolyzer principle schematic.
Five, embodiment: the present invention realizes with following technology official documents and correspondence:
As shown in the figure, the 1st, metallic crucible, the double cathode collector bar of doing; The 2nd, metallic rod, the double anode rod of doing, the black patch of bottom are the iron-based anode; The 3rd, process furnace; The 4th, plumbago crucible; The 5th, electrolytic solution; The 6th, insulated liner; The 7th, ferroaluminium liquid.
The following black patch of metallic rod 2 is the iron-based anode, mainly is to form with ferrous alloys such as pure iron or cast iron, carbon steel and steel alloys, adopts the cast iron anode in present method.Plumbago crucible 4 effects are splendid attire electrolytic solution 5 double as graphite cathodes, and the ionogen in the electrolytic solution 5 consists of the 97wt% sodium aluminum fluoride and adds 3wt%Al
2O
3, the outer then 1wt%Fe that adds
2O
3, wherein wt% is a mass percent.Added a certain amount of Al every 20 minutes in the clockwise electrolytic solution
2O
3And Fe
2O
3, to replenish the Al in the electrolyzer
2O
3And Fe
2O
3Consumption.Add the appropriate amount of industrial fine aluminium in electrolyzer in advance, purpose is the metallic iron double as negative electrode that absorbs electrolysis and thermal reduction generation, prevents the bottom of electrolytic tank crust simultaneously.Negative electrode is vertical with anode to be placed in the crucible that is added with the corundum liner, 6 insulating effects of corundum liner, thus increase current density, help the gathering of aluminum alloy melt.In electrolyzer, add commercial-purity aluminium 30 grams during beginning earlier, form aluminium liquid after adding and absorb metal Fe, form ferroaluminium liquid 7 after the electrolysis, just final required Al-Fe alloy.Anodic current density is 0.7～1.0A/cm
2, interpole gap is 40-45mm, and electrolysis temperature is 960 ℃, and electrolysis time is 1～2 hour.
Reaction in the electrolyzer can be summarized as: 2Al+Fe
2O
3=Al
2O
3+ 2Fe
2Fe
2O
3=4Fe+3O
2(electrolysis)
2Al
2O
3=4Al+3O
2(electrolysis).
In the electrolytic process, produce a large amount of oxygen (O around the anode
2).
Test result shows: electrolytic process is steady, and the anodic erosion rate is lower, 0.4mm per hour, and Fe content can reach 10～16wt% in the alloy, the tool better industrial application prospects.
For reducing raw-material cost, in ionogen, also add the scheme of iron protoxide, Z 250, rhombohedral iron ore, magnetite, ferro-aluminum ore deposit, red mud and ferrous manganese ore, add a kind of getting final product separately, can severally unite use for various objectives sometimes, its effect and ferric oxide are similar.
Claims (4)
1, a kind of is anode prepares aluminium-ferrous alloy in electrolyzer preparation method with iron and alloy thereof, it is characterized in that: it is that the ferrous alloy of single pure iron or cast iron, carbon steel, steel alloy constitutes that this method adopts with anode material; With single pure iron or ferrous alloy is anode, and ionogen is mainly the sodium aluminum fluoride of 95～97wt%, the Al of 3～5wt%
2O
3, preparing product is aluminium-ferrous alloy.
2, according to claim 1 a kind of be anode prepares aluminium-ferrous alloy in electrolyzer preparation method with iron and alloy thereof, it is characterized in that: the iron-based oxide compound that also has 0～1wt% in the ionogen.
3, according to claim 1 a kind of be anode prepares aluminium-ferrous alloy in electrolyzer preparation method with iron and alloy thereof, it is characterized in that: press the required iron-holder difference in the ferroaluminium, the commercial-purity aluminium that in electrolyzer, adds different content in advance, so that metallic iron fuses into aluminium liquid, and prevent that metallic iron or ferro-aluminum intermetallic compound from forming crust at bottom of electrolytic tank.
4, according to claim 2 a kind of be anode prepares aluminium-ferrous alloy in electrolyzer preparation method with iron and alloy thereof, it is characterized in that: the iron-based oxide compound in the ionogen mainly includes one or more in ferric oxide, iron protoxide, Z 250, rhombohedral iron ore, magnetite, ferro-aluminum ore deposit, red mud and the ferrous manganese ore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100467382A CN100465350C (en) | 2005-06-24 | 2005-06-24 | Method of preparing aluminium-iron base alloy in electrolytic tank using iron and its alloy as anode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100467382A CN100465350C (en) | 2005-06-24 | 2005-06-24 | Method of preparing aluminium-iron base alloy in electrolytic tank using iron and its alloy as anode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1724715A CN1724715A (en) | 2006-01-25 |
| CN100465350C true CN100465350C (en) | 2009-03-04 |
Family
ID=35924343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100467382A Expired - Fee Related CN100465350C (en) | 2005-06-24 | 2005-06-24 | Method of preparing aluminium-iron base alloy in electrolytic tank using iron and its alloy as anode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100465350C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105002522A (en) * | 2015-06-20 | 2015-10-28 | 江西理工大学 | Method for extracting valuable metal from red mud through fused salt electrolysis method |
| CN106011943B (en) * | 2016-05-30 | 2017-12-15 | 安徽工业大学 | A kind of method that pure ferroalloy and carbide-derived carbon are prepared using carbon ferroalloy simultaneously as raw material |
| RU2673597C1 (en) * | 2016-11-24 | 2018-11-28 | Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" | Method of aluminum alloys production |
| CN110760890B (en) * | 2019-11-27 | 2022-01-11 | 东北大学 | Method for treating smelting slag by electrolytic reduction of aluminum molten salt |
| CN111005038B (en) * | 2019-12-10 | 2021-03-26 | 中南大学 | Preparation method of aluminum-silicon-iron alloy |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001043208A2 (en) * | 1999-12-09 | 2001-06-14 | Duruz, Jean-Jacques | Aluminium electrowinning cells operating with metal-based anodes |
| CN1425803A (en) * | 2003-01-14 | 2003-06-25 | 石忠宁 | Aluminium electrolyzing inert anode of Fe base aluminium oxide composite material and its preparing method |
| CN1443877A (en) * | 2003-04-18 | 2003-09-24 | 石忠宁 | Metal base aluminium electrolytic inert anode and its preparation method |
| WO2004035871A1 (en) * | 2002-10-18 | 2004-04-29 | Moltech Invent S.A. | Aluminium electrowinning cells with metal-based anodes |
-
2005
- 2005-06-24 CN CNB2005100467382A patent/CN100465350C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001043208A2 (en) * | 1999-12-09 | 2001-06-14 | Duruz, Jean-Jacques | Aluminium electrowinning cells operating with metal-based anodes |
| US20030066755A1 (en) * | 1999-12-09 | 2003-04-10 | Jean-Jacques Duruz | Metal-based anodes for aluminium electrowinning cells |
| WO2004035871A1 (en) * | 2002-10-18 | 2004-04-29 | Moltech Invent S.A. | Aluminium electrowinning cells with metal-based anodes |
| CN1425803A (en) * | 2003-01-14 | 2003-06-25 | 石忠宁 | Aluminium electrolyzing inert anode of Fe base aluminium oxide composite material and its preparing method |
| CN1443877A (en) * | 2003-04-18 | 2003-09-24 | 石忠宁 | Metal base aluminium electrolytic inert anode and its preparation method |
Non-Patent Citations (2)
| Title |
|---|
| 新型炼铝电极材料. 邱竹贤，徐君莉，石忠宁.中国有色金属学报，第14 专辑1卷. 2004 |
| 新型炼铝电极材料. 邱竹贤，徐君莉，石忠宁.中国有色金属学报，第14 专辑1卷. 2004 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1724715A (en) | 2006-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101684813B1 (en) | Electrolysis tank used for aluminum electrolysis and electrolysis process using the electrolyzer | |
| Wang et al. | Electrolysis of solid metal sulfide to metal and sulfur in molten NaCl–KCl | |
| CN101717969A (en) | Alloy material suitable for inert anode of metal fused-salt electrolysis cell | |
| CN101613864B (en) | Method for preparing magnesium-rare earth alloy by fused salt electrolysis process | |
| CN100465350C (en) | Method of preparing aluminium-iron base alloy in electrolytic tank using iron and its alloy as anode | |
| Evans | The evolution of technology for light metals over the last 50 years: Al, Mg, and Li | |
| CN102994801A (en) | Alloy material applicable to inert anode of metal molten salt electrolytic cell | |
| CN108360023B (en) | Method and device for composite deoxidation alloying of aluminum and magnesium | |
| CN1203217C (en) | Metal base aluminium electrolytic inert anode and its preparation method | |
| CN104611609A (en) | Low-silver lead alloy multi-element anode material for non-ferrous metal electrodeposition and preparation method thereof | |
| CN100532653C (en) | Method for extracting titanium from electrolyzed molten salt | |
| AU2013275996B2 (en) | Inert alloy anode used for aluminum electrolysis and preparation method therefor | |
| CN106435263B (en) | A kind of production method of the Pb-Ag-La alloy anode plates of energy-saving corrosion-resisting erosion | |
| Huang et al. | Polyaniline anode for zinc electrowinning from sulfate electrolytes | |
| CN100588732C (en) | Process for preparing magnesium-lithium-dysprosium alloy by fused salt electrolysis | |
| Haarberg | Electrodeposition of aluminium containing alloys from molten fluoride electrolytes containing metal oxides | |
| CN110205652A (en) | A kind of preparation method and application of copper bearing master alloy | |
| CN1301344C (en) | Spinel type nickel aluminate base metal ceramic inert electrode | |
| CN1243127C (en) | Producing method for rare-earth aluminosilicate titanium alloy | |
| CN102912382B (en) | A kind of method of electrolytic preparation aluminium-magnesium alloy in fluorochloride molten salt system | |
| CN103276410B (en) | The method of inert anode when adopting TiAlC based ceramic metal as electrolysis | |
| CN109898101A (en) | A kind of novel energy-conserving anti-corrosion electrolytic aluminum anode steel pawl and design method | |
| CN103484895A (en) | Inert alloy anode for aluminum electrolysis and preparation method thereof | |
| CN106048638B (en) | A kind of method of the molten metallic nickel liquid making of small cathode deposition period reverse current electricity | |
| CN111172562A (en) | Preparation method of fuel aluminum for aluminum-air battery |
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: 20090304 |