CN108251658A - A kind of method of directional solidification extraction ultra-pure aluminum under electromagnetic agitation - Google Patents

A kind of method of directional solidification extraction ultra-pure aluminum under electromagnetic agitation Download PDF

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Publication number
CN108251658A
CN108251658A CN201810112884.8A CN201810112884A CN108251658A CN 108251658 A CN108251658 A CN 108251658A CN 201810112884 A CN201810112884 A CN 201810112884A CN 108251658 A CN108251658 A CN 108251658A
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aluminium
flue
pure aluminum
electromagnetic agitation
directional solidification
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李森
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Jiangsu Jinhai Aluminum Industry Co Ltd
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Jiangsu Jinhai Aluminum Industry Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B21/00—Obtaining aluminium
    • C22B21/06—Obtaining aluminium refining
    • C22B21/064—Obtaining aluminium refining using inert or reactive gases
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/003—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals by induction
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/006—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with use of an inert protective material including the use of an inert gas
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

The present invention relates to extraction aluminium method and technology field, and the method for disclosing a kind of extraction ultra-pure aluminum of the directional solidification under electromagnetic agitation, include the following steps：A. first the oxide layer of refined aluminium outer surface to be purified is polished off, then the refined aluminium after polishing is cleaned, then dry the moisture of refined aluminium outer surface；B. by treated in step A, refined aluminium put in the totally enclosed boiler clothing of high purity graphite crucible freely forms liner, then it will be put into electromagnetic agitation heating furnace by the flue that refined aluminium forms, first flue is evacuated with vacuum pump, it is passed through argon gas again to atmospheric value so that pressure and extraneous pressure equilibrium inside flue；C. flue is heated, while electromagnetic mixing apparatus is moved into lower portion of furnace body, coordinate heating system, the molten aluminum first melted is stirred.The method of directional solidification extraction ultra-pure aluminum under the electromagnetic agitation so that the purification efficiency higher of aluminium, refining effect is more preferable, and more environmentally-friendly in process.

Description

A kind of method of directional solidification extraction ultra-pure aluminum under electromagnetic agitation
Technical field
The present invention relates to extraction aluminium method and technology field, the directional solidification extraction under specially a kind of electromagnetic agitation is ultra-pure The method of aluminium.
Background technology
Silvery white light metal, there is ductility, and rodlike, sheet, foil-like, powdery, band-like and Filamentous is often made in commodity, in humidity One layer of oxidation film for preventing metal erosion can be formed in air, aluminium powder heats in air fiercely to burn, and sends out what is dazzle the eyes White flame is soluble in dilute sulfuric acid, nitric acid, hydrochloric acid, sodium hydroxide and potassium hydroxide solution, is insoluble in water, aviation, building and vapour The development of Che San great essential industries, it is desirable that material property has the peculiar property of aluminium and its alloy, this just greatly facilitates this The production and application of new metallic aluminium.
There are more universal application, such as China's patent in existing technology using segregation method extraction raffinal 101191160 A of CN propose a kind of device for extracting high pure aluminum, but the device refining effect is poor, and the production cycle is long so that high The production efficiency of fine aluminium is very low, such as patent CN 101748281 A in China propose a kind of vacuum purifying device of high-purity aluminium, Aluminium is purified in the environment of vacuum, but device impurity when aluminium is purified is not easy to be segregated discharge upwards, It is not high so as to cause aluminium purification efficiency, such as to propose a kind of purification of directional solidification high-purity by 102277505 A of China patent CN The method and its smelting furnace of aluminium, but the device is stirred molten aluminum using mechanical device, be easy to cause secondary pollution, and carry Pure efficiency is very low, therefore proposes that the directional solidification under a kind of electromagnetic agitation extracts the method for ultra-pure aluminum to solve above-mentioned ask Topic.
Invention content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides the directional solidification extraction ultra-pure aluminums under a kind of electromagnetic agitation Method has the advantages that purification efficiency high and environmental protection, solves the problems, such as that purification efficiency is low and not environmentally.
(2) technical solution
The purpose high and environmentally friendly to realize above-mentioned purification efficiency, the present invention provide following technical solution：A kind of electromagnetic agitation Under directional solidification extraction ultra-pure aluminum method, include the following steps：
A. first the oxide layer of refined aluminium outer surface to be purified is polished off, then the refined aluminium after polishing is cleaned, so The moisture of refined aluminium outer surface is dried afterwards；
B. by treated in step A, refined aluminium put in the totally enclosed boiler clothing of high purity graphite crucible freely forms liner, so It will be put into electromagnetic agitation heating furnace, first flue be evacuated with vacuum pump, then be passed through argon gas by the flue that refined aluminium forms afterwards To atmospheric value so that pressure and extraneous pressure equilibrium inside flue；
C. flue is heated, while electromagnetic mixing apparatus is moved into lower portion of furnace body, coordinate heating system, to first melting Molten aluminum stirring, continuous heating is completely melt refined aluminium；
D. flue is at the uniform velocity pulled out from electromagnetic mixing apparatus, while electromagnetic mixing apparatus is moved into aluminium using pulling apparatus The solid liquid interface forward position of liquid carries out the molten aluminum in solid liquid interface forward position axial stream stirring, and utilizes the cooling being mounted at fire door Device cools down the oven body part of pull-out, molten aluminum is made to form the temperature field of orientation, melt is along opposite with hot-fluid Direction solidifies；
E. after the boiler clothing lifted out completely cooling, clean aluminium ingot is taken out, the 2-3cm of aluminium ingot upper end is cut off, lower end is cut Go in step A that treated the 20% of refined aluminium weight, remainder is more than 5N finished products；
F. the step of aluminium ingot of finished product being repeated A-E can obtain the ultra-pure aluminum of more than 5N5.
Preferably, the temperature in the step C fusings environment is maintained at 680 DEG C -720 DEG C.
Preferably, there are 50cm interlayers between the bell and graphite crucible of boiler clothing in the step B.
Preferably, the agitating mode in the step C includes positive and negative stirring and stirring up and down.
Preferably, a diameter of 10-30cm of the high purity graphite crucible is highly 70-150cm.
Preferably, the speed that flue is at the uniform velocity pulled out from electromagnetic mixing apparatus is by the pulling apparatus in the step D 10cm/h-25cm/h。
Preferably, the cooling device includes water-cooling system and air cooling system, and water-cooling system is installed on electromagnetic mixing apparatus Fire door, linked closely cooling jacket using ring-type, water jacket internal diameter is equal to flue outer diameter, and air cooling system is mounted on the upper of cooling jacket Portion carries out gas cooling to the crucible for pulling out water jacket.
Preferably, it is 1 the aluminium ingot on surface of polishing to be placed on mass ratio in the step A：2：3 HF, HNO3With go 10mi n are impregnated in the mixed solution of ionized water, then are cleaned up with deionized water, are then dried in an oven, oven temperature is set It is set to 250 DEG C.
(3) advantageous effect
Compared with prior art, the present invention provides a kind of sides of the directional solidification extraction ultra-pure aluminum under electromagnetic agitation Method has following advantageous effect：
1st, the method for the directional solidification extraction ultra-pure aluminum under the electromagnetic agitation, by first by refined aluminium outer surface to be purified Polishing, it is 1 that the aluminium ingot on surface of polishing is placed on mass ratio：2：3 HF, HNO3It is impregnated in the mixed solution of deionized water 10mi n, then cleaned up with deionized water, it can effectively remove the oxide layer outside refined aluminium so that the refining effect of refined aluminium More preferably, the temperature in heating unit is maintained at 680 DEG C -720 DEG C states that can effectively ensure molten aluminum, prevents molten aluminum from solidifying, Molten aluminum is stirred using electromagnetic mixing apparatus, it is more environmentally-friendly, avoid secondary pollution, and stirring efficiency higher, mixing effect More preferably so that the refining effect of aluminium is more preferable, purification efficiency higher.
2nd, the method for the directional solidification extraction ultra-pure aluminum under the electromagnetic agitation, is stirred flue from electromagnetism by pulling apparatus It is 10cm/h-25cm/h to mix the speed at the uniform velocity pulled out in device, coordinates water-cooling system and air cooling system that can cause the solidifying of molten aluminum Gu effect is more preferable so that molten aluminum forms the temperature field of orientation, and melt solidifies along the direction opposite with hot-fluid, impurity is determined It to discharge, is largely accumulated in the bottom of aluminium ingot, then the impurity layer of aluminium ingot bottom is taken out, knot was crystallized after 4-5 hours Beam, and be passed through argon gas to flue inside and can dilute air in flue, reduction raises concentration, ensures refining effect, and It can prevent boiler clothing from deforming at high temperature, extend the service life of equipment for purifying, ensure that the refining effect of aluminium.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical solution in the embodiment of the present invention is clearly and completely retouched It states, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based on the present invention In embodiment, the every other implementation that those of ordinary skill in the art are obtained without making creative work Example, shall fall within the protection scope of the present invention.
A kind of method of directional solidification extraction ultra-pure aluminum under electromagnetic agitation, includes the following steps：
A. first the oxide layer of refined aluminium outer surface to be purified is polished off, then the refined aluminium after polishing is cleaned, so The moisture of refined aluminium outer surface is dried afterwards；
B. by treated in step A, refined aluminium put in the totally enclosed boiler clothing of high purity graphite crucible freely forms liner, so It will be put into electromagnetic agitation heating furnace, first flue be evacuated with vacuum pump, then be passed through argon gas by the flue that refined aluminium forms afterwards To atmospheric value so that pressure and extraneous pressure equilibrium inside flue；
C. flue is heated, while electromagnetic mixing apparatus is moved into lower portion of furnace body, coordinate heating system, to first melting Molten aluminum stirring, continuous heating is completely melt refined aluminium；
D. flue is at the uniform velocity pulled out from electromagnetic mixing apparatus, while electromagnetic mixing apparatus is moved into aluminium using pulling apparatus The solid liquid interface forward position of liquid carries out the molten aluminum in solid liquid interface forward position axial stream stirring, and utilizes the cooling being mounted at fire door Device cools down the oven body part of pull-out, molten aluminum is made to form the temperature field of orientation, melt is along opposite with hot-fluid Direction solidifies；
E. after the boiler clothing lifted out completely cooling, clean aluminium ingot is taken out, the 2-3cm of aluminium ingot upper end is cut off, lower end is cut Go in step A that treated the 20% of refined aluminium weight, remainder is more than 5N finished products；
F. the step of aluminium ingot of finished product being repeated A-E can obtain the ultra-pure aluminum of more than 5N5.
Wherein, the temperature that step C is melted in environment is maintained at 680 DEG C -720 DEG C.
Wherein, there are 50cm interlayers between the bell and graphite crucible of boiler clothing in step B.
Wherein, the agitating mode in step C includes positive and negative stirring and stirring up and down.
Wherein, a diameter of 10-30cm of high purity graphite crucible is highly 70-150cm.
Wherein, the speed that the pulling apparatus in step D at the uniform velocity pulls out flue from electromagnetic mixing apparatus is 10cm/h- 25cm/h。
Wherein, cooling device includes water-cooling system and air cooling system, and water-cooling system is installed on the fire door of electromagnetic mixing apparatus, It is linked closely cooling jacket using ring-type, water jacket internal diameter is equal to flue outer diameter, and air cooling system is mounted on the top of cooling jacket, to pulling out The crucible of water jacket carries out gas cooling.
Wherein, it is 1 the aluminium ingot on surface of polishing to be placed on mass ratio in step A：2：3 HF, HNO3And deionized water Mixed solution in impregnate 10mi n, then cleaned up, then dried in an oven, oven temperature is set as with deionized water 250℃。
Embodiment one
A kind of method of directional solidification extraction ultra-pure aluminum under electromagnetic agitation, includes the following steps：
A. first the oxide layer of refined aluminium outer surface to be purified is polished off, then the refined aluminium after polishing is cleaned, so The moisture of refined aluminium outer surface is dried afterwards；
B. by treated in step A, refined aluminium put in the totally enclosed boiler clothing of high purity graphite crucible freely forms liner, so It will be put into electromagnetic agitation heating furnace, first flue be evacuated with vacuum pump, then be passed through argon gas by the flue that refined aluminium forms afterwards To atmospheric value so that pressure and extraneous pressure equilibrium, a diameter of 10cm of high purity graphite crucible inside flue are highly 70cm；
C. flue is heated, while electromagnetic mixing apparatus is moved into lower portion of furnace body, coordinate heating system, to first melting Molten aluminum stirring, continuous heating is completely melt refined aluminium, and the temperature melted in environment is maintained at 680 DEG C；
D. flue is at the uniform velocity pulled out from electromagnetic mixing apparatus, while electromagnetic mixing apparatus is moved into aluminium using pulling apparatus The solid liquid interface forward position of liquid carries out the molten aluminum in solid liquid interface forward position axial stream stirring, and utilizes the cooling being mounted at fire door Device cools down the oven body part of pull-out, molten aluminum is made to form the temperature field of orientation, melt is along opposite with hot-fluid Direction solidifies, and the speed that pulling apparatus at the uniform velocity pulls out flue from electromagnetic mixing apparatus is 10cm/h；
E. after the boiler clothing lifted out completely cooling, clean aluminium ingot is taken out, the 2cm of aluminium ingot upper end is cut off, lower end is cut Treated in step A the 20% of refined aluminium weight, and remainder is more than 5N finished products；
F. the step of aluminium ingot of finished product being repeated A-E can obtain the ultra-pure aluminum of more than 5N5.
Embodiment two
A kind of method of directional solidification extraction ultra-pure aluminum under electromagnetic agitation, includes the following steps：
A. first the oxide layer of refined aluminium outer surface to be purified is polished off, then the refined aluminium after polishing is cleaned, so The moisture of refined aluminium outer surface is dried afterwards；
B. by treated in step A, refined aluminium put in the totally enclosed boiler clothing of high purity graphite crucible freely forms liner, so It will be put into electromagnetic agitation heating furnace, first flue be evacuated with vacuum pump, then be passed through argon gas by the flue that refined aluminium forms afterwards To atmospheric value so that pressure and extraneous pressure equilibrium, a diameter of 20cm of high purity graphite crucible inside flue are highly 110cm；
C. flue is heated, while electromagnetic mixing apparatus is moved into lower portion of furnace body, coordinate heating system, to first melting Molten aluminum stirring, continuous heating is completely melt refined aluminium, and the temperature melted in environment is maintained at 700 DEG C；
D. flue is at the uniform velocity pulled out from electromagnetic mixing apparatus, while electromagnetic mixing apparatus is moved into aluminium using pulling apparatus The solid liquid interface forward position of liquid carries out the molten aluminum in solid liquid interface forward position axial stream stirring, and utilizes the cooling being mounted at fire door Device cools down the oven body part of pull-out, molten aluminum is made to form the temperature field of orientation, melt is along opposite with hot-fluid Direction solidifies, and the speed that pulling apparatus at the uniform velocity pulls out flue from electromagnetic mixing apparatus is 17.5cm/h；
E. after the boiler clothing lifted out completely cooling, clean aluminium ingot is taken out, the 2.5cm of aluminium ingot upper end is cut off, lower end is cut Go in step A that treated the 20% of refined aluminium weight, remainder is more than 5N finished products；
F. the step of aluminium ingot of finished product being repeated A-E can obtain the ultra-pure aluminum of more than 5N5.
Embodiment three
A kind of method of directional solidification extraction ultra-pure aluminum under electromagnetic agitation, includes the following steps：
A. first the oxide layer of refined aluminium outer surface to be purified is polished off, then the refined aluminium after polishing is cleaned, so The moisture of refined aluminium outer surface is dried afterwards；
B. by treated in step A, refined aluminium put in the totally enclosed boiler clothing of high purity graphite crucible freely forms liner, so It will be put into electromagnetic agitation heating furnace, first flue be evacuated with vacuum pump, then be passed through argon gas by the flue that refined aluminium forms afterwards To atmospheric value so that pressure and extraneous pressure equilibrium, a diameter of 30cm of high purity graphite crucible inside flue are highly 150cm；
C. flue is heated, while electromagnetic mixing apparatus is moved into lower portion of furnace body, coordinate heating system, to first melting Molten aluminum stirring, continuous heating is completely melt refined aluminium, and the temperature melted in environment is maintained at 720 DEG C；
D. flue is at the uniform velocity pulled out from electromagnetic mixing apparatus, while electromagnetic mixing apparatus is moved into aluminium using pulling apparatus The solid liquid interface forward position of liquid carries out the molten aluminum in solid liquid interface forward position axial stream stirring, and utilizes the cooling being mounted at fire door Device cools down the oven body part of pull-out, molten aluminum is made to form the temperature field of orientation, melt is along opposite with hot-fluid Direction solidifies, and the speed that pulling apparatus at the uniform velocity pulls out flue from electromagnetic mixing apparatus is 25cm/h；
E. after the boiler clothing lifted out completely cooling, clean aluminium ingot is taken out, the 3cm of aluminium ingot upper end is cut off, lower end is cut Treated in step A the 20% of refined aluminium weight, and remainder is more than 5N finished products；
F. the step of aluminium ingot of finished product being repeated A-E can obtain the ultra-pure aluminum of more than 5N5.
The beneficial effects of the invention are as follows：The method of directional solidification extraction ultra-pure aluminum under the electromagnetic agitation, by first will Refined aluminium outer surface polishing to be purified, it is 1 that the aluminium ingot on surface of polishing is placed on mass ratio：2：3 HF, HNO3And deionization 10mi n are impregnated in the mixed solution of water, then are cleaned up with deionized water, can effectively remove the oxide layer outside refined aluminium, So that the refining effect of refined aluminium is more preferable, the temperature in heating unit, which is maintained at 680 DEG C -720 DEG C, can effectively ensure molten aluminum State prevents molten aluminum from solidifying, and molten aluminum is stirred using electromagnetic mixing apparatus, more environmentally-friendly, avoids secondary pollution, and stir More efficient, mixing effect is more preferable so that the refining effect of aluminium is more preferable, purification efficiency higher, and by pulling apparatus by stove The speed that courage is at the uniform velocity pulled out from electromagnetic mixing apparatus is 10cm/h-25cm/h, coordinates water-cooling system and air cooling system that can make The coagulation result for obtaining molten aluminum is more preferable so that molten aluminum forms the temperature field of orientation, and melt is solidified along the direction opposite with hot-fluid, will Impurity is oriented discharge, is largely accumulated in the bottom of aluminium ingot, then the impurity layer of aluminium ingot bottom is taken out, small by 4-5 When after terminate, and be passed through argon gas to flue inside and can dilute air in flue, reduction raises concentration, ensures to carry Pure effect, and can prevent boiler clothing from deforming at high temperature, extend the service life of equipment for purifying, ensure that the purification effect of aluminium Fruit.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace And modification, the scope of the present invention is defined by the appended.

Claims (8)

1. the method for the directional solidification extraction ultra-pure aluminum under a kind of electromagnetic agitation, which is characterized in that include the following steps：
A. first the oxide layer of refined aluminium outer surface to be purified is polished off, then the refined aluminium after polishing is cleaned, then will The moisture drying of refined aluminium outer surface；
B. by treated in step A, refined aluminium put in the totally enclosed boiler clothing of high purity graphite crucible freely forms liner, then will It is put into electromagnetic agitation heating furnace by the flue that refined aluminium forms, first flue is evacuated with vacuum pump, then be passed through argon gas to big Atmospheric pressure value so that pressure and extraneous pressure equilibrium inside flue；
C. flue is heated, while electromagnetic mixing apparatus is moved into lower portion of furnace body, coordinate heating system, to the aluminium first melted Liquid stirs, and continuous heating is completely melt refined aluminium；
D. flue is at the uniform velocity pulled out from electromagnetic mixing apparatus, while electromagnetic mixing apparatus is moved into molten aluminum using pulling apparatus Solid liquid interface forward position carries out the molten aluminum in solid liquid interface forward position axial stream stirring, and utilizes the cooling device being mounted at fire door The oven body part of pull-out is cooled down, molten aluminum is made to form the temperature field of orientation, melt is along the direction opposite with hot-fluid Solidification；
E. after the boiler clothing lifted out completely cooling, clean aluminium ingot is taken out, the 2-3cm of aluminium ingot upper end is cut off, lower end cuts step Treated in rapid A the 20% of refined aluminium weight, and remainder is more than 5N finished products；
F. the step of aluminium ingot of finished product being repeated A-E can obtain the ultra-pure aluminum of more than 5N5.
2. the method for the directional solidification extraction ultra-pure aluminum under a kind of electromagnetic agitation according to claim 1, feature exist In the temperature in the step C fusings environment is maintained at 680 DEG C -720 DEG C.
3. the method for the directional solidification extraction ultra-pure aluminum under a kind of electromagnetic agitation according to claim 1, feature exist In having 50cm interlayers between the bell and graphite crucible of boiler clothing in the step B.
4. the method for the directional solidification extraction ultra-pure aluminum under a kind of electromagnetic agitation according to claim 1, feature exist In the agitating mode in the step C includes positive and negative stirring and stirring up and down.
5. the method for the directional solidification extraction ultra-pure aluminum under a kind of electromagnetic agitation according to claim 1, feature exist In a diameter of 10-30cm of the high purity graphite crucible is highly 70-150cm.
6. the method for the directional solidification extraction ultra-pure aluminum under a kind of electromagnetic agitation according to claim 1, feature exist In the speed that the pulling apparatus in the step D at the uniform velocity pulls out flue from electromagnetic mixing apparatus is 10cm/h-25cm/h.
7. the method for the directional solidification extraction ultra-pure aluminum under a kind of electromagnetic agitation according to claim 1, feature exist In the cooling device includes water-cooling system and air cooling system, and water-cooling system is installed on the fire door of electromagnetic mixing apparatus, using ring Shape links closely cooling jacket, and water jacket internal diameter is equal to flue outer diameter, and air cooling system is mounted on the top of cooling jacket, to pulling out water jacket Crucible carries out gas cooling.
8. the method for the directional solidification extraction ultra-pure aluminum under a kind of electromagnetic agitation according to claim 1, feature exist In it is 1 that the aluminium ingot on surface of polishing is placed on mass ratio in the step A：2：3 HF, HNO3With the mixing of deionized water 10mi n are impregnated in solution, then are cleaned up with deionized water, are then dried in an oven, oven temperature is set as 250 DEG C.
CN201810112884.8A 2018-02-05 2018-02-05 A kind of method of directional solidification extraction ultra-pure aluminum under electromagnetic agitation Pending CN108251658A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1392009A (en) * 2002-08-02 2003-01-22 黄国兴 Electromagnetic continuous casting method for fine copper, aluminium and alloy rod masterbatch
CN1392008A (en) * 2002-08-02 2003-01-22 黄国兴 Electromagnetic casting method for aluminium-1% silicon fine wire masterbatch for integrated circuit linkage
CN102277505A (en) * 2011-08-08 2011-12-14 新疆众和股份有限公司 Method for purifying high-pure aluminum by directional solidification and smelting furnace used in same
CN103695667A (en) * 2013-12-23 2014-04-02 江苏大学 Method for directional solidification extraction of ultra-high-purity aluminum under electromagnetic agitation
CN104263969A (en) * 2014-09-09 2015-01-07 江苏大学 Furnace pipe device and method for preparing ultra-high purity aluminum

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1392009A (en) * 2002-08-02 2003-01-22 黄国兴 Electromagnetic continuous casting method for fine copper, aluminium and alloy rod masterbatch
CN1392008A (en) * 2002-08-02 2003-01-22 黄国兴 Electromagnetic casting method for aluminium-1% silicon fine wire masterbatch for integrated circuit linkage
CN102277505A (en) * 2011-08-08 2011-12-14 新疆众和股份有限公司 Method for purifying high-pure aluminum by directional solidification and smelting furnace used in same
CN103695667A (en) * 2013-12-23 2014-04-02 江苏大学 Method for directional solidification extraction of ultra-high-purity aluminum under electromagnetic agitation
CN104263969A (en) * 2014-09-09 2015-01-07 江苏大学 Furnace pipe device and method for preparing ultra-high purity aluminum

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Application publication date: 20180706