CN1314498A - Process for making Al-Si alloy - Google Patents
Process for making Al-Si alloy Download PDFInfo
- Publication number
- CN1314498A CN1314498A CN 01109320 CN01109320A CN1314498A CN 1314498 A CN1314498 A CN 1314498A CN 01109320 CN01109320 CN 01109320 CN 01109320 A CN01109320 A CN 01109320A CN 1314498 A CN1314498 A CN 1314498A
- Authority
- CN
- China
- Prior art keywords
- ore
- process according
- novel process
- alloy
- aluminium
- 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.)
- Pending
Links
Images
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The Ai-Si alloy making process includes milling raw material ore and reductant to certain size, mixing the material powder, adhesive and water, extruding into lump, drying in temperature low than 150 deg.c, smelting in electric ore smelting furnace for 2-4 hr, refining in ladle while adding refining agent, vacuum filtering to eliminate sludge and iron, mixing and casting ingot. The raw material has a Al2O3-to-carbon ratio of 74:26-90:10, and the refining agent consists of cryolite 44%, sodium salt 47% and potassium salt 9% and has consumption of 10%. The power of AC ore smelting furnace is greater than 10 MVA, and that of DC ore smelting furnace is equal to or smaller than 10 MVA.
Description
The present invention is the novel method in the non-ferrous metal metallurgy technology, adopts the submerged arc ore-smelting furnace directly to produce the new technology of aluminum silicon alloy from aluminiferous ore and silica mine.
China at present industrial sector such as machinofacture, automotive industry, building trade and the civilian cast aluminium alloy of often seeing all be with electrolysis remelted aluminum ingot and industrial silicon hot melt convert system and.Will pass through multiple working procedures such as alumina producer, electrolytic aluminium factory, industrial silicon factory, aluminium alloy factory like this and just can finish from the ore to the finished product, the energy consumption height makes material cost high.And the capital cost of these factories is also very high, does not domesticly so far also adopt electric heating process that ore is directly smelted to contain aluminium greater than 50% aluminum silicon alloy.
Purpose of the present invention is exactly to adopt electric heating process directly to make the crude aluminum silicon alloy that contains aluminium 60-70% from ore from aluminiferous mineral, obtain meeting the aluminum silicon alloy of the national standard trade mark more after treatment, can save a large amount of capital costs like this, energy-saving and cost-reducing, the high production of low input is for China's aluminium industrial process breaks a new path.
This Technology basic procedure is to contain aluminium, silicon ore deposit (bauxite, silica mine, kaolin etc.) and reductive agent (coal, refinery coke), binding agent (pulp disused liquid, clay) abrasive dust, batching, to mix and pinch, advance to carry out pyrotic smelting in the hot stove in ore deposit after the briquetting, drying again, to make the thick alloy of aluminium silicon that contains aluminium 60-70%.Make the aluminum silicon alloy that conformance with standard requires through refining, vacuum filtration, the deironing of removing slag, mixing, dilution, ingot casting again.(seeing accompanying drawing 1 for details)
Wherein, in technology provided by the present invention, the Al in the aluminum ore of one of raw material
2O
3Content more than 75%, silica mine contains SiO
2More than 98%.But the detrimental impurity in the raw material such as iron, titanium etc. all can be brought product in melting, and therefore, the impurities in raw materials composition must in addition strict control.
Wherein, in technology provided by the present invention, to another raw material reductive agent carbon, require it at high temperature, except that having higher resistivity and reducing power, the ash detrimental impurity will lack, and the briquetting performance will be got well.
Wherein, in technology provided by the present invention, group is made in bauxitic ore, reductive agent fine grinding, and wherein the requirement for the charge of briquettews is that agglomerate should have higher reduction rate and response capacity.
Wherein, in technology provided by the present invention, furnace charge should have bigger resistivity, enough physical strength and guarantee the drying program of agglomerate, makes agglomerate moisture content be lower than 1% when dry.
Wherein, in technology provided by the present invention, batching is the prerequisite of producing aluminum silicon alloy correctly and uniformly, and wherein alumina silica ratio should be about m=2.If the reductive agent that adds is too high, furnace charge can not be melted fully, viscosity is big as a result for it, can not ordinary production.Cross low can make aluminium sesquioxide can not complete reaction, reduction, therefore, the consumption proportion of aluminium sesquioxide and carbon, quality and quantity decisive role to product, correct proportioning is: the aluminium sesquioxide in the mineral and the weight ratio of carbon are 74: 26-90: 10, optimum ratio is 88: 12, but promptly reduces the such output aluminum content of a aluminum oxide need 0.176-0.126 part reductive agent up to more than 78%.The feedstock production operation is seen accompanying drawing 2.
Among the present invention, related production unit is the three-phase three-pole electric arc furnace and the direct current electric arc furnace that be less than or equal to 10MVA of power greater than 10MVA, and the production temperature of reaction requires to be controlled at 1900-2200 ℃.Carry out melting in electric arc furnace, what require that electrode will bury is dark, voltage will be low and electric current want big (its ratio is greater than 500), heat concentrates on the Lu Tang bottom, furnace bottom unit power density is greater than 600KW/m
2, the position of electrode is low and stable, and furnace charge evenly descends around electrode, and gas is discharged from tapered furnace charge face, and the thick alloy of aluminium silicon is regularly emitted from converter nose.Power can often be opened at the above head piece of 16.5MVA.Low and to be stabilized in the electrode position that inserts furnace charge 2.0m be the essential condition that improves output and reduce power consumption.
Among the present invention, related direct current furnace operation DC voltage 50-80V, electric current 36-100KA.
Among the present invention, the method for solvent refined is adopted in related refining, adds a certain proportion of refining agent (44% sodium aluminum fluoride, 47% sodium salt, 9% sylvite), to appropriate time, adopts vacuum filtration, removes slag deironing, mixed diluting, ingot casting.But filter residue refuse preparation steel-making reductor.Novel process provided by the present invention and domestic and international electrolysis be molten converts method and compares, and has reduced production link, improves utilization rate of electrical, the less investment of founding the factory, and little power consumption, cost is low, and is good in economic efficiency.Concrete ton aluminum silicon alloy cost provides as follows: 3 tons * 80 yuan=240 yuan of aluminum ores, 0.7 ton * 80 yuan=56 yuan of quartzites, 0.5 ton * 220=110 of charcoal unit, 3000 yuan of power consumptions, 800 yuan at electrode, 850 yuan of medicaments, 800 yuan of labour costs, 500 yuan of depreciation fundss, 400 yuan of overheadss, 1600 yuan of the taxes add up to 8356 yuan.
Claims (7)
1, process for making Al-Si alloy is that ore and reductive agent charcoals salic, silicon oxide such as bauxite, silica mine, kaolin are milled down to certain particle size, presses Al
2O
3/ SiO
2It is agglomerating to add the extruding of binding agent and water, is being no more than under 150 ℃ the condition dryly, inserts in 1900-2200 ℃ the electric furnace melting 2.5-4 hour.The ingot casting after back adding refining agent refining during two-maing ladle (44% sodium aluminum fluoride, 47% receive salt, 9% sylvite) vacuum filtration slagging-off, deironing, mixing, the dilution of coming out of the stove.
2, novel process according to claim 1, wherein the weight ratio of aluminium sesquioxide in the mineral and charcoal is 74: 26-90: 10.
3, novel process according to claim 1, wherein the weight ratio of aluminium sesquioxide and charcoal is preferably 88: 12.
4,44% the sodium aluminum fluoride that novel process according to claim 1, wherein said refining agent are formed, 47% sodium salt, 9% sylvite.
5, novel process according to claim 1, the consumption of wherein said refining agent is for pressing 10% of ton aluminium alloy pharmaceutical quantities.
6, novel process according to claim 1, major equipment are that the hot furnace capacity in three-phase alternating current ore deposit is greater than 10MVA.The DC-ore-heating furnace capacity is less than or equal to 10MVA, and working volts direct current are at 50-100V, working current 36-100KVA.
7, explained hereafter according to claim 1 contains aluminium and reaches in the 50-70% crude aluminum silicon alloy, and it is 2 that raw material is selected the batching alumina silica ratio of bauxite, kaolin, silica mine, bituminous coal, refinery coke etc. for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01109320 CN1314498A (en) | 2001-03-01 | 2001-03-01 | Process for making Al-Si alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01109320 CN1314498A (en) | 2001-03-01 | 2001-03-01 | Process for making Al-Si alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1314498A true CN1314498A (en) | 2001-09-26 |
Family
ID=4657864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01109320 Pending CN1314498A (en) | 2001-03-01 | 2001-03-01 | Process for making Al-Si alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1314498A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365146C (en) * | 2005-08-30 | 2008-01-30 | 宋德忠 | Technology for manufacturing aluminium silicon alloy |
| CN100462451C (en) * | 2006-04-30 | 2009-02-18 | 吴兴明 | Method of processing raw materials for production of ferrosilicon silicocalcium and high purity silicon |
| CN101812590A (en) * | 2010-04-15 | 2010-08-25 | 上海海事大学 | Method for producing Al-Si-Cu alloy by electric heating method |
| CN101462723B (en) * | 2009-01-05 | 2011-01-05 | 昆明理工大学 | Method for preparing high purity silicon aluminum silicon alloy by vacuum carbon thermal reduction |
| CN104831103A (en) * | 2015-05-22 | 2015-08-12 | 北京交通大学 | Aluminum alloy iron removal flux and preparation method thereof |
| CN109252045A (en) * | 2018-10-31 | 2019-01-22 | 东北大学 | A method of extracting metallic aluminium and Antaciron from aluminum-containing mineral |
-
2001
- 2001-03-01 CN CN 01109320 patent/CN1314498A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365146C (en) * | 2005-08-30 | 2008-01-30 | 宋德忠 | Technology for manufacturing aluminium silicon alloy |
| CN100462451C (en) * | 2006-04-30 | 2009-02-18 | 吴兴明 | Method of processing raw materials for production of ferrosilicon silicocalcium and high purity silicon |
| CN101462723B (en) * | 2009-01-05 | 2011-01-05 | 昆明理工大学 | Method for preparing high purity silicon aluminum silicon alloy by vacuum carbon thermal reduction |
| CN101812590A (en) * | 2010-04-15 | 2010-08-25 | 上海海事大学 | Method for producing Al-Si-Cu alloy by electric heating method |
| CN104831103A (en) * | 2015-05-22 | 2015-08-12 | 北京交通大学 | Aluminum alloy iron removal flux and preparation method thereof |
| CN109252045A (en) * | 2018-10-31 | 2019-01-22 | 东北大学 | A method of extracting metallic aluminium and Antaciron from aluminum-containing mineral |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101298642B (en) | Method for preparing titanium-aluminum-silicon alloy by carbothermal reduction method | |
| CN210048827U (en) | Short-process copper smelting system | |
| CN100572572C (en) | The method of utilizing aluminium ash and coal gangue composite wastes to produce aluminum silicon alloy | |
| CN109252045B (en) | Method for extracting metal aluminum and ferrosilicon alloy from aluminum-containing mineral | |
| CN102586600A (en) | Process for recycling valuable metal from lead copper matte | |
| CN111187924B (en) | Continuous lithium smelting device and method for lithium-containing material | |
| CN102337408B (en) | Two-step reduction method for recycling stainless steel scales | |
| WO2017190393A1 (en) | Method for extracting iron and titanium with ferrotitanium complex ore as raw material and filtering device | |
| CN110699554A (en) | Method for producing vanadium-rich iron from vanadium-rich slag | |
| CN102912131A (en) | Preparation method of vanadium-aluminum alloy | |
| CN105087864A (en) | Method for directly producing titanium carbide from vanadium titano-magnetite | |
| CN110484734A (en) | A kind of method of iron red mud high magnetic pre-selection-drastic reduction melting | |
| US11981979B2 (en) | Device and method for preparing low-impurity regenerated brass alloy through step-by-step insertion of electrode | |
| CN1314498A (en) | Process for making Al-Si alloy | |
| CN101476047B (en) | Method for preparing metal aluminum from aluminum-containing raw material | |
| CN100425714C (en) | Process of refining aluminium silicon alloy from coal gangue or flyash | |
| CN101225482A (en) | Ferrotitanium alloy electric induction furnace smelting method | |
| CN107557590A (en) | Zinc dross recoverying and utilizing method | |
| CN101967530B (en) | Method for reducing iron by smelting reduction in electrometallurgy | |
| CN103045790A (en) | Nickel-containing steel production process | |
| CN1403595A (en) | Coal-iron ore microwave reduction and electric furnace steel-making method and equipment | |
| CN112143908B (en) | Smelting process for treating complex gold ore | |
| CN110980753B (en) | Process for producing high-quality sodium silicate by adopting high-silicon iron ore | |
| CN1024469C (en) | Method of nickel retrieved from waste catalyst by pyrogenic process | |
| CN1191242A (en) | Process for smelting aluminium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |