CN102676825A - Iron removal agent and iron removal method for recovering waste aluminum - Google Patents
Iron removal agent and iron removal method for recovering waste aluminum Download PDFInfo
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- CN102676825A CN102676825A CN2012101360128A CN201210136012A CN102676825A CN 102676825 A CN102676825 A CN 102676825A CN 2012101360128 A CN2012101360128 A CN 2012101360128A CN 201210136012 A CN201210136012 A CN 201210136012A CN 102676825 A CN102676825 A CN 102676825A
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- iron
- removing reagent
- aluminium
- iron removing
- sodium
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- 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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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses an iron removal agent for recovering waste aluminum. The iron removal agent is composed of 30wt.%-40wt.% of sodium chloride, 30wt.%-40wt.% of potassium chloride, 10wt.%-20wt.% of sodium fluorosilicate and 10wt.%-20wt.% of cryolite powders. The iron removal agent is applicable to the process that scrap aluminum is subjected to remelting by using a method of adding slurry base solution, and in the process of remelting scrap aluminum, the iron removal agent is added, wherein the iron removal agent can be embedded on surfaces of scrap iron in cutting substances, the embedded scrap iron in the cutting substances is brought to the surface of a molten liquid with the upward floating of non-metal slag inclusion, and molten aluminum is obtained after the slag inclusion are removed. Accordingly, iron content in the process of remelting the scrap aluminum is effectively reduced, and aluminum liquids after the scrap aluminum is recovered can be used as a raw material for hub production.
Description
Technical field
The present invention relates to the application and the method for removing iron of iron removing reagent in the aluminium scrap recovery.
Background technology
In the aluminium industrial production, the proportion of aluminium scrap is bigger, and better the aluminium scrap recovery is a great research project.In aluminium processing industry production, duraluminum smear metal thing accounts for great ratio in reuse aluminium, rises owing to be accompanied by the content of iron in the smear metal process, as boring inserts material or the like in mesopore material and the machining.In the reflow process of aluminium scrap, the liquid addition method is the highest method of casting yield at the bottom of the pulpous state, and its main points are liquid (the aluminium water that this end liquid is exactly molten state the end of at; Be equivalent to the effect of introduction, our duraluminum smear metal thing melted more easily) stir adjustment injector controlled temperature when being in the TR of semi-melting; Make it to keep pasty state; The aluminium of in batches packing into bits stir while pack into, all pack into and the pulp thing up to whole aluminium bits; Heat up then, dissolve the back fully and come out of the stove with solvent treatment.But because the entering of a large amount of smear metal things makes and reclaims back duraluminum iron-holder considerably beyond the product processing requirement.
Summary of the invention
Technical problem to be solved by this invention just provides a kind of aluminium scrap and reclaims with iron removing reagent and method for removing iron, reduces the iron-holder in the aluminium scrap reflow process, makes the aluminium liquid after aluminium scrap reclaims can be used for the raw material that wheel hub is produced.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of aluminium scrap reclaims and uses iron removing reagent, and it is characterized in that: iron removing reagent is made up of sodium-chlor, Repone K, Sodium Silicofluoride 98min and cryolite powder.
Preferably, the weight percent of each component is in the said iron removing reagent: sodium-chlor 30～40%, Repone K 30～40%, Sodium Silicofluoride 98min 10～20%, cryolite powder 10～20%.
Preferably, the weight percent of each component is in the said iron removing reagent: sodium-chlor 35%, Repone K 35%, Sodium Silicofluoride 98min 15%, cryolite powder 15%.
Preferably, the weight percent of each component is in the said iron removing reagent: sodium-chlor 30%, Repone K 30%, Sodium Silicofluoride 98min 20%, cryolite powder 20%.
Preferably, the weight percent of each component is in the said iron removing reagent: sodium-chlor 40%, Repone K 40%, Sodium Silicofluoride 98min 10%, cryolite powder 10%.
The present invention also provides a kind of aluminium scrap to reclaim method for removing iron, it is characterized in that comprising the steps:
The duraluminum smear metal thing that (1) will contain a large amount of iron is poured in the stir-fry ash pot of end liquid;
(2) in frying ash pot aluminium slag, add the described iron removing reagent of claim 1;
(3) stir melt in the stir-fry ash pot with mechanical blade; Make iron removing reagent and aluminium slag thorough mixing; Make aluminum alloy melting and iron removing reagent is wrapped in the iron filings surface in the smear metal thing; Prevention generates the Al-Fe alloy because of thermite reaction, stop iron filings to be dissolved in aluminium liquid rapidly, and iron filings brings to bath surface along with nonmetal slag inclusion floats together after being wrapped;
(4) at last the bath surface slag inclusion is clawed, obtain molten aluminium.
Preferably, the part by weight of said aluminium slag and iron removing reagent is 10:2～4.
Preferably, the part by weight of said aluminium slag and iron removing reagent is 10:3.
The liquid addition method carried out the aluminium scrap reflow process at the bottom of iron removing reagent of the present invention was applicable to pulpous state; In the aluminium scrap reflow process; Add iron removing reagent; Iron removing reagent can be wrapped in the iron filings surface in the smear metal thing, and the back that is wrapped of the iron filings in the smear metal thing brings to bath surface along with nonmetal slag inclusion floats together, can obtain molten aluminium after skimming slag inclusion.Thereby can effectively reduce the iron-holder in the aluminium scrap reflow process, and the aluminium liquid after the aluminium scrap recovery can be used as the raw material that wheel hub is produced.
Embodiment
Iron removing reagent is made up of sodium-chlor, Repone K, Sodium Silicofluoride 98min and cryolite powder.The weight percent of each component is in the said iron removing reagent: sodium-chlor 30～40%, Repone K 30～40%, Sodium Silicofluoride 98min 10～20%, cryolite powder 10～20%.
Aluminium scrap reclaims method for removing iron, comprises the steps:
The duraluminum smear metal thing that (1) will contain a large amount of iron is poured in the stir-fry ash pot of end liquid;
(2) in frying ash pot aluminium slag, add the described iron removing reagent of claim 1; The part by weight of said aluminium slag and iron removing reagent is 10:2～4;
(3) fry melt in the ash pot with the mechanical blade stirring, make iron removing reagent and aluminium slag thorough mixing, iron removing reagent is wrapped in the iron filings surface in the smear metal thing, and the iron filings in the smear metal thing bring to bath surface along with nonmetal slag inclusion floats together after being wrapped;
(4) at last the bath surface slag inclusion is clawed, obtain molten aluminium.
Below specify aluminium scrap of the present invention and reclaim embodiment with iron removing reagent and method for removing iron,
Embodiment 1, and the weight percent of each component is in the said iron removing reagent: sodium-chlor 35%, Repone K 35%, Sodium Silicofluoride 98min 15%, cryolite powder 15%.The part by weight of said aluminium slag and iron removing reagent is 10:3.
Embodiment 2, and the weight percent of each component is in the said iron removing reagent: sodium-chlor 30%, Repone K 30%, Sodium Silicofluoride 98min 20%, cryolite powder 20%.The part by weight of said aluminium slag and iron removing reagent is 10:4.
Embodiment 3, and the weight percent of each component is in the said iron removing reagent: sodium-chlor 40%, Repone K 40%, Sodium Silicofluoride 98min 10%, cryolite powder 10%.The part by weight of said aluminium slag and iron removing reagent is 10:2.
Sodium Silicofluoride 98min is a kind of double salt, under heating condition, decomposes: Na
2SiF
6→ 2NaF+SiF
4↑, SiF4 is a gas, and degree of decomposition increases with the rising of temperature, and the foaming that is produced is very little, and is long-pending big with the surface in contact of melt, under injection conditions, bubbles with tortuous distance come-up, and the residence time in melt is long, and the refining effect is remarkable.NaF can with the Al in the melt
2O
3Reaction; 2NaF+Al
2O
3→ 2Na
3AlF
6+ 3Na
2O realizes the slagging-off effect.
Adsorption mechanism: fluorochemical has adsorption to the nonmetal slag inclusion in the melt, and along with the content of fluorochemical increases, adsorption strengthens.
Dissolution mechanism: Na
3AlF
6Solubilized Al under refining temperature
2O
3
Adhesive tape mechanism: iron removing reagent can be with the nonmetal slag inclusion that suspends and the sheet iron strip in the duraluminum smear metal thing to bath surface in melt in the floating-upward process.The toughness of iron removing reagent is high more, and the adhesive tape effect is remarkable more.The reason that toughness is high is: be dissolved in Na
3AlF
6In Al
2O
3With complex ion (AlO
+, AlO
2Deng) form exist, they increase the viscosity of fused salt; NaF in the solvent, Na
3AlF
6Make fused salt begin the crystalline temperature and raise, crystallization range broadens, and increases its viscosity.
Flotation mechanism: but during the small bubbles that a small amount of thermolysis material in the refining agent generates come-up, can reduce the hydrogen richness in the melt by law of partial pressure, can catch higher melt metal and the nonmetal inclusion that is suspended in the melt simultaneously.
Claims (8)
1. an aluminium scrap reclaims and uses iron removing reagent, and it is characterized in that: iron removing reagent is made up of sodium-chlor, Repone K, Sodium Silicofluoride 98min and cryolite powder.
2. a kind of aluminium scrap according to claim 1 reclaims uses iron removing reagent, and it is characterized in that: the weight percent of each component is in the said iron removing reagent: sodium-chlor 30～40%, Repone K 30～40%, Sodium Silicofluoride 98min 10～20%, cryolite powder 10～20%.
3. a kind of aluminium scrap according to claim 2 reclaims uses iron removing reagent, and it is characterized in that: the weight percent of each component is in the said iron removing reagent: sodium-chlor 35%, Repone K 35%, Sodium Silicofluoride 98min 15%, cryolite powder 15%.
4. a kind of aluminium scrap according to claim 2 reclaims uses iron removing reagent, and it is characterized in that: the weight percent of each component is in the said iron removing reagent: sodium-chlor 30%, Repone K 30%, Sodium Silicofluoride 98min 20%, cryolite powder 20%.
5. a kind of aluminium scrap according to claim 2 reclaims uses iron removing reagent, and it is characterized in that: the weight percent of each component is in the said iron removing reagent: sodium-chlor 40%, Repone K 40%, Sodium Silicofluoride 98min 10%, cryolite powder 10%.
6. an aluminium scrap reclaims method for removing iron, it is characterized in that comprising the steps:
The duraluminum smear metal thing that (1) will contain a large amount of iron is poured in the stir-fry ash pot of end liquid;
(2) in frying ash pot aluminium slag, add the described iron removing reagent of claim 1;
(3) stir melt in the stir-fry ash pot with mechanical blade; Make iron removing reagent and aluminium slag thorough mixing; Make aluminum alloy melting and iron removing reagent is wrapped in the iron filings surface in the smear metal thing; Prevention generates the Al-Fe alloy because of thermite reaction, stop iron filings to be dissolved in aluminium liquid rapidly, and iron filings brings to bath surface along with nonmetal slag inclusion floats together after being wrapped;
(4) at last the bath surface slag inclusion is clawed, obtain molten aluminium.
7. a kind of aluminium scrap according to claim 6 reclaims method for removing iron, and it is characterized in that: the part by weight of said aluminium slag and iron removing reagent is 10:2～4.
8. a kind of aluminium scrap according to claim 7 reclaims method for removing iron, and it is characterized in that: the part by weight of said aluminium slag and iron removing reagent is 10:3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101360128A CN102676825A (en) | 2012-05-03 | 2012-05-03 | Iron removal agent and iron removal method for recovering waste aluminum |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101360128A CN102676825A (en) | 2012-05-03 | 2012-05-03 | Iron removal agent and iron removal method for recovering waste aluminum |
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| Publication Number | Publication Date |
|---|---|
| CN102676825A true CN102676825A (en) | 2012-09-19 |
Family
ID=46809370
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101360128A Pending CN102676825A (en) | 2012-05-03 | 2012-05-03 | Iron removal agent and iron removal method for recovering waste aluminum |
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|---|---|
| CN (1) | CN102676825A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103382524A (en) * | 2013-07-22 | 2013-11-06 | 南南铝业股份有限公司 | Regenerating method of waste aluminum foil containing organic matters |
| CN104060118A (en) * | 2013-03-22 | 2014-09-24 | 高建卫 | Novel boron compound-containing aluminium alloy deironing flux |
| CN108315562A (en) * | 2017-12-30 | 2018-07-24 | 安徽玉成光华铝业有限公司 | A kind of method of secondary aluminium yield in raising aluminium scrap |
| CN108315561A (en) * | 2017-12-30 | 2018-07-24 | 安徽玉成光华铝业有限公司 | Ferro element in a kind of efficient solvent method removal aluminium scrap |
| CN108913900A (en) * | 2018-06-26 | 2018-11-30 | 林州市林丰铝电有限责任公司 | A kind of method that the aluminium scrap liquid of foundry's stir-fry ash recycling prepares ZL104 alloy |
| CN111549237A (en) * | 2020-05-20 | 2020-08-18 | 北京科技大学 | Method for separating iron element impurities from pulse current in secondary aluminum melt |
| CN115161506A (en) * | 2022-07-14 | 2022-10-11 | 苏州中成同人新材料科技有限公司 | Aluminum alloy refining agent for removing iron and heat treatment process thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073486A (en) * | 1991-12-16 | 1993-06-23 | 东北工学院 | The aluminum or aluminum alloy slag remover for refining |
| CN1940101A (en) * | 2006-09-25 | 2007-04-04 | 山东铝业股份有限公司 | Aluminium-alloy iron-removing solvent |
| CN102127647A (en) * | 2010-10-11 | 2011-07-20 | 镇江市丹徒区振华熔剂厂 | Multifunctional demagging agent |
-
2012
- 2012-05-03 CN CN2012101360128A patent/CN102676825A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073486A (en) * | 1991-12-16 | 1993-06-23 | 东北工学院 | The aluminum or aluminum alloy slag remover for refining |
| CN1940101A (en) * | 2006-09-25 | 2007-04-04 | 山东铝业股份有限公司 | Aluminium-alloy iron-removing solvent |
| CN102127647A (en) * | 2010-10-11 | 2011-07-20 | 镇江市丹徒区振华熔剂厂 | Multifunctional demagging agent |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060118A (en) * | 2013-03-22 | 2014-09-24 | 高建卫 | Novel boron compound-containing aluminium alloy deironing flux |
| CN104060118B (en) * | 2013-03-22 | 2017-01-18 | 上海众材工程检测有限公司 | Boron compound-containing aluminium alloy deironing flux |
| CN103382524A (en) * | 2013-07-22 | 2013-11-06 | 南南铝业股份有限公司 | Regenerating method of waste aluminum foil containing organic matters |
| CN108315562A (en) * | 2017-12-30 | 2018-07-24 | 安徽玉成光华铝业有限公司 | A kind of method of secondary aluminium yield in raising aluminium scrap |
| CN108315561A (en) * | 2017-12-30 | 2018-07-24 | 安徽玉成光华铝业有限公司 | Ferro element in a kind of efficient solvent method removal aluminium scrap |
| CN108913900A (en) * | 2018-06-26 | 2018-11-30 | 林州市林丰铝电有限责任公司 | A kind of method that the aluminium scrap liquid of foundry's stir-fry ash recycling prepares ZL104 alloy |
| CN108913900B (en) * | 2018-06-26 | 2020-02-11 | 林州市林丰铝电有限责任公司 | Method for preparing ZL104 alloy from waste aluminum liquid recovered from casting shop ash |
| CN111549237A (en) * | 2020-05-20 | 2020-08-18 | 北京科技大学 | Method for separating iron element impurities from pulse current in secondary aluminum melt |
| CN111549237B (en) * | 2020-05-20 | 2021-08-06 | 北京科技大学 | Method for separating iron element impurities from pulse current in secondary aluminum melt |
| CN115161506A (en) * | 2022-07-14 | 2022-10-11 | 苏州中成同人新材料科技有限公司 | Aluminum alloy refining agent for removing iron and heat treatment process thereof |
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Application publication date: 20120919 |