CN102312104A - Refining agent for aluminium and aluminium alloy melting - Google Patents

Refining agent for aluminium and aluminium alloy melting Download PDF

Info

Publication number
CN102312104A
CN102312104A CN201110310775A CN201110310775A CN102312104A CN 102312104 A CN102312104 A CN 102312104A CN 201110310775 A CN201110310775 A CN 201110310775A CN 201110310775 A CN201110310775 A CN 201110310775A CN 102312104 A CN102312104 A CN 102312104A
Authority
CN
China
Prior art keywords
aluminium
refining agent
aluminium alloy
refining
flux
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
Application number
CN201110310775A
Other languages
Chinese (zh)
Inventor
周雄多
梁敬钧
覃锡伯
刘长春
蔡新海
方铭艺
伍桂岐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALNAN ALUMINIUM Co Ltd
Original Assignee
ALNAN ALUMINIUM Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ALNAN ALUMINIUM Co Ltd filed Critical ALNAN ALUMINIUM Co Ltd
Priority to CN201110310775A priority Critical patent/CN102312104A/en
Publication of CN102312104A publication Critical patent/CN102312104A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention provides a refining agent for melting processing of aluminium and aluminium alloy, and the refining agent comprises the following six components of KCl, NaCl, CaF2, Na2SiF6, Na3AlF6, C2Cl6. When the refining agent of the invention is used for melting of aluminium and aluminium alloy, the degassing and impurity-removing effect is better; the hydrogen content in aluminium alloy melt is lower; the burning loss of the metal can be reduced effectively; meanwhile the refining agent has certain heating effect, so the hot slag recovery is more convenient and the recovery rate is higher.

Description

Aluminium and aluminium alloy smelting refining agent
Technical field
The present invention relates to aluminium and duraluminum manufacture field, the refining agent that more specifically say so a kind of aluminium and aluminium alloy smelting are used.
Background technology
In order to make high-quality aluminum or aluminum alloy section bar, must make with extra care (refining) processing to the starting material of aluminum or aluminum alloy section bar, this just needs good refining agent, also is slag former.The refining agent that uses in the aluminum current alloy melting industry has 3 kinds, and they are RJ1-1, RJ1-2, RJ2-1..These three kinds of refining agents generally are to carry out the degasification removal of impurities in carrier feeding aluminium and the aluminium alloy melt with the rare gas element.Current, the producer of domestic production refining agent is a lot, and quality is uneven, in order to contend for markets; There is unordered phenomenon of bidding in each manufacturer, and holds concurrently though the refining agent product price of being produced is low, and technology content is not high, in use has some problems; Such as: aluminium slag separation property is bad, and degassing effect is poor, and heating effect is excessive; Increase the scaling loss of aluminium, perhaps do not have heating effect, cause to carry out the recovery of warm sludge etc.Generally speaking; Aluminium and aluminium alloy melt are before the degasification removal of impurities, and H (hydrogen) content is often more than 0.30ml/100gAl, if starting material are a little bit poorer; H content even surpass 0.40ml/100gAl, the measured refining agent of matter can remove the level to 0.18ml/100gAl with the H content of molten aluminium in the stove.
Summary of the invention
The objective of the invention is to have researched and developed the refining agent that a kind of aluminium and aluminium alloy smelting are used in order to overcome the deficiency of prior art.
The inventor through test and research repeatedly, on the basis of having studied the refining agent that existing aluminium and aluminium alloy smelting use, and is guaranteeing that the refining agent fusing point is lower than under the prerequisite of smelting temperature, increases sodium aluminum fluoride and C in production practice 2Cl 6Amount, design the refining agent that better aluminium of a kind of refining effect and aluminium alloy smelting are used.
Aluminium of the present invention and aluminium alloy smelting refining agent is characterized in that comprising potassium chloride (KCl), sodium chloride nacl, Calcium Fluoride (Fluorspan) CaF 2, Sodium Silicofluoride 98min Na 2SiF 6, sodium fluoroaluminate Na 3AlF 6, Sesquichloratum C 2Cl 6Form, each components contents is that KCl is 38～42% respectively, NaCl is 35～39%, CaF 2Be 4～5%, Na 2SiF 6Be 6～7%, Na 3AlF 6Be 7.0～12.0%, C 2Cl 6Be 2.0～4.0%.
Also can add some additives as required.
Working method is with KCl, NaCl, CaF 2, Na 2SiF 6, Na 3AlF 6, C 2Cl 6Six components promptly obtain aluminium of the present invention and aluminium alloy smelting refining agent through mixing, baking and sieving.
In the above-mentioned component, the effect of KCl, NaCl is, utilizes NaCl and KCl fusing point low, and proportion has only 1.55g/cm respectively under smelting temperature 3And 1.50g/cm 3, be significantly less than the characteristics of the proportion of molten aluminium, NaCl and KCl as matrix flux, can well be spread over aluminium melt surface under smelting temperature, the oxide compound of broken and absorption bath surface.
In the above-mentioned component, Na 2SiF 6, CaF 2Effect be: Na 2SiF 6Have heating effect, have dissolving power for oxide compound simultaneously; CaF 2Can increase the flowability of molten flux, and can also remove the sull of bath surface effectively, improve degassing effect; Increase the surface tension of fused salt mixt; Make the fused salt balling of absorbing oxide, be convenient to and melt extraction, wrap the loss that aluminium causes and reduce solid slag; And because the process that volume absorption is mingled with has been quickened in the raising of flux-smelt surface tension.
In the above-mentioned component, Na 3AlF 6Effect be, increase the adsorptive power of solvent greatly, with the increase of sodium aluminum fluoride content, the solubleness of aluminum oxide in flux also increases thereupon.When temperature was higher, the ability of sodium aluminum fluoride dissolved oxygen aluminium was bigger, was easier to separate with aluminium liquid.
In the above-mentioned component, C 2Cl 6Effect be, have degassing effect, this material water absorbability is low, easy to use, refining effect is good, and the grain refining effect is arranged.
The refining principle of refining agent of the present invention is:
After flux adds aluminium alloy melt, promptly be molten into flux and drip, because the proportion of flux is littler than melt,, will meet with nonmetal inclusion composition granule in the melt in the process of come-up again so flux drops in come-up in the melt.Because the surface tension of flux on the non-metallic inclusion interface is little, flux just can be wetting non-metallic inclusion, makes it be adsorbed in flux and drip; Upper surface tension force is big and flux is at the interface of aluminium liquid, does not soak into, so flux just can then be skimmed and remove with the non-metallic inclusion of absorption at the effect of the difference in specific gravity liquid level of floating downward out, this slag making is commonly referred to as the flotation slag making.
One, solvency action
General villaumite is to Al 2O 3Dissolving power and little, be not more than 1～1.2%Al usually 2O 3If but flux adds sodium aluminum fluoride, then make flux have the dissolving inclusion particularly the ability of aluminum oxide strengthen greatly.
When the molecular structure of the molecular structure of flux and some oxide compound and some chemical property are close when approximate, can produce at a certain temperature and dissolve each other.The Al identical like positively charged ion 2O 3And Na 3AlF 6Certain ability of dissolving each other is just arranged, in the KCl of equivalent and NaCl mixture, add 10% sodium aluminum fluoride, can dissolve 0.5%Al 2O 3, with the increase of sodium aluminum fluoride content, the solubleness of aluminum oxide in flux also increases thereupon.
When temperature was higher, the ability of sodium aluminum fluoride dissolved oxygen aluminium was bigger.Owing to this solvency action, change character-proportion, size, the shape of stove aluminum oxide more, be easier to separate with aluminium liquid.Non-metallic inclusion is dissolved in the flux, breaks away from melt along with the come-up of flux.Because the speed that non-metallic inclusion is dissolved in the flux is very slow, and the ascent rate that flux drips is very fast again, be to rely on absorption so the main effect of non-metallic inclusion is removed in flux-refining.
Two, chemical action
At a certain temperature, some KCl or NaCl possibly react with melt:
3KCl+Al＝AlCl 3↑+3K
3NaCl+Al＝AlCl 3↑+3Na
Will be under smelting temperature, the AlCl of generation 3Steam promptly carries out deoxidisation by the rare gas element principle.Simultaneously, the sodium aluminum fluoride in the flux also can with Al 2O 3With forming the slag making reaction:
Al 2O 3+Na 3AlF 6＝Na 2O·Al 2O 3+AlF 3↑
The AlF that generates 3Also carry out refining by the rare gas element principle.Therefore, utilize aluminium of the present invention and aluminium alloy smelting refining agent that melt is carried out refining, can not only slag making remove oxide inclusion, and can get rid of the gas in the melt.
The characteristics of aluminium of the present invention and aluminum refining agent are: the fusing point of this refining agent is lower than the temperature of fusion of duraluminum; This refining agent proportion less than the proportion of duraluminum; Inclusion in its absorption and the dissolving melt, and deaeration capability is stronger; It does not chemically react with metal and furnace lining; It is little that it has water absorbability, and evaporation is forced down; Aluminium of the present invention and aluminum refining agent are easily manufactured, low price.
Beneficial effect and advantage
1, consumption is few, and use nitrogen that refining aluminium fusant agent of the present invention is blown into and carry out refining in the melt, good impurity removing effect, deaeration capability is stronger, and under the situation of not using online degasifying device, its hydrogen content can drop to the level of about 0.13～0.18ml/100gAl.
2, owing to controlled heating effect, can reduce metal loss.
3, refining agent of the present invention has certain heating effect, and it is more convenient to make that warm sludge reclaims, and the recovery is higher.
Embodiment
Embodiment 1
Take by weighing KCl40 kilogram, 39 kilograms of NaCl, CaF 24 kilograms, Na 2SiF 67 kilograms, Na 3AlF 67.5 kilogram, C 2Cl 6Fixed 2.5 kilograms of co-blended are even, evenly spread out on pallet, and put into electric furnace to pallet and toast, 85 ± 5 ℃ of design temperatures, roasting about the 2 hours cooling air coolings of coming out of the stove of flood are after sieving promptly obtains aluminium of the present invention and aluminium alloy smelting refining agent.
Embodiment 2
Take by weighing KCl41 kilogram, NaCl38 kilogram, CaF 25 kilograms, Na 2SiF 66 kilograms, Na 3AlF 68.0 kilogram, C 2Cl 6Fixed 2.0 kilograms of co-blended are even, can also add other additive, spread out on pallet after mixing; Putting into electric furnace to pallet toasts; 85 ± 5 ℃ of design temperatures, roasting about the 2 hours cooling air coolings of coming out of the stove of flood are after sieving promptly obtains aluminium of the present invention and aluminium alloy smelting refining agent.
Application example
The inventor is used for refining agent of the present invention the production reality of the founding factory of our unit, and when the aluminium alloy melt temperature reached 690～720 ℃, (purity was 99.5% N with rare gas element 2) be carrier, evenly feed in aluminium and the aluminium alloy melt by 0.1% of melt gross weight in the stove and carry out refining 10～15min (melt is capping more for a long time).After the refining, aluminium alloy melt H content reaches 0.12～0.18ml/100gAl.If use common solid refined agent to carry out refining, its refining temperature general requirement in 710～760 ℃ of scopes, consumption be in the stove melt gross weight 0.1%～0.2%, and after the refining aluminium alloy melt H content generally more than 0.2ml/100gAl.

Claims (1)

1. aluminium and aluminium alloy smelting refining agent is characterized in that: comprise KCl, NaCl, CaF 2, Na 2SiF 6, Na 3AlF 6, C 2Cl 6, each components contents is respectively
KCl 38～42％；
NaCl 35～39％；
CaF 2 4～5％；
Na 2SiF 6 6～7％；
Na 3AlF 6 7.0～12.0％；
C 2Cl 6 2.0～4.0％。
CN201110310775A 2011-10-14 2011-10-14 Refining agent for aluminium and aluminium alloy melting Pending CN102312104A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110310775A CN102312104A (en) 2011-10-14 2011-10-14 Refining agent for aluminium and aluminium alloy melting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110310775A CN102312104A (en) 2011-10-14 2011-10-14 Refining agent for aluminium and aluminium alloy melting

Publications (1)

Publication Number Publication Date
CN102312104A true CN102312104A (en) 2012-01-11

Family

ID=45425670

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201110310775A Pending CN102312104A (en) 2011-10-14 2011-10-14 Refining agent for aluminium and aluminium alloy melting

Country Status (1)

Country Link
CN (1) CN102312104A (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102605201A (en) * 2012-03-21 2012-07-25 南昌大学 Covering agent for copper and copper alloy smelting
CN102965536A (en) * 2012-11-13 2013-03-13 宁波杭州湾新区珠峰企业管理服务有限公司 Aluminum alloy smelting refining agent
CN103031456A (en) * 2012-12-05 2013-04-10 安徽徽铝铝业有限公司 Preparation method of refining agent for smelting high-purity aluminum alloy sectional material
CN103088226A (en) * 2012-12-05 2013-05-08 安徽徽铝铝业有限公司 Preparation method of refining agent for melting aluminum alloy section doped with plant ash
CN103361487A (en) * 2013-07-22 2013-10-23 南南铝业股份有限公司 Production method of recycled aluminum
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
CN103643069A (en) * 2013-12-10 2014-03-19 南南铝业股份有限公司 Aluminum alloy refining agent
CN103725913A (en) * 2013-12-31 2014-04-16 焦作市圣昊铝业有限公司 Demagging agent for aluminum alloy
CN103820667A (en) * 2014-03-06 2014-05-28 大连理工大学 Covering agent and aluminium-silicon alloy melt processing method
CN104388730A (en) * 2014-11-20 2015-03-04 无锡鸿声铝业有限公司 Efficient refining agent for aluminum alloy and preparation method thereof
CN105132731A (en) * 2015-09-30 2015-12-09 湖南创元铝业有限公司 Covering agent for aluminum and aluminum alloy smelting and preparing method of covering agent
CN105316508A (en) * 2015-10-21 2016-02-10 广西平果铝合金精密铸件有限公司 Aluminum alloy refining agent containing Ce, La and Er
CN105779803A (en) * 2016-05-20 2016-07-20 湖南东方钪业股份有限公司 Composite alterant for aluminum alloy and preparing method of composite alterant
CN106277005A (en) * 2016-08-27 2017-01-04 盛隆资源再生（无锡）有限公司 A kind of recovery cryolite, calcium carbonate and method of sodium sulfate from calcium fluoride sludge resource
CN107407522A (en) * 2015-03-03 2017-11-28 Ds液体有限公司 aluminium smelting furnace
CN107557604A (en) * 2017-10-30 2018-01-09 湖南博溥立材料科技有限公司 Aluminum refining agent and preparation method thereof
CN109055797A (en) * 2018-08-29 2018-12-21 佛山朝鸿新材料科技有限公司 A kind of preparation method of aluminium alloy compound refining agent
CN109306412A (en) * 2018-12-20 2019-02-05 河北四通新型金属材料股份有限公司 A kind of aluminium and aluminium alloy high-efficiency environment friendly refining agent and preparation method thereof
CN111041264A (en) * 2020-01-16 2020-04-21 深圳市新星轻合金材料股份有限公司 Preparation method of aluminum alloy refining agent
CN112458312A (en) * 2020-11-25 2021-03-09 中国恩菲工程技术有限公司 Refining agent for smelting aluminum or aluminum alloy and application thereof

Citations (6)

* Cited by examiner, † Cited by third party
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
CN1831161A (en) * 2005-03-08 2006-09-13 东北轻合金有限责任公司 Deslagging agent for high performance deforming aluminium and aluminium alloy, prepn. method and application thereof
CN101343699A (en) * 2008-09-03 2009-01-14 营口经济技术开发区金达合金铸造有限公司 Aluminum-silicon alloy refining agent and preparation thereof
CN101423909A (en) * 2008-12-12 2009-05-06 葛学元 Refining agent for alloy and method for producing the same
CN101967565A (en) * 2010-10-28 2011-02-09 湖南晟通科技集团有限公司 Refining agent for aluminum and aluminum alloy
CN102041396A (en) * 2010-10-28 2011-05-04 湖南晟通科技集团有限公司 Preparation method of scouring agent for aluminum and aluminum alloy

Patent Citations (6)

* Cited by examiner, † Cited by third party
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
CN1831161A (en) * 2005-03-08 2006-09-13 东北轻合金有限责任公司 Deslagging agent for high performance deforming aluminium and aluminium alloy, prepn. method and application thereof
CN101343699A (en) * 2008-09-03 2009-01-14 营口经济技术开发区金达合金铸造有限公司 Aluminum-silicon alloy refining agent and preparation thereof
CN101423909A (en) * 2008-12-12 2009-05-06 葛学元 Refining agent for alloy and method for producing the same
CN101967565A (en) * 2010-10-28 2011-02-09 湖南晟通科技集团有限公司 Refining agent for aluminum and aluminum alloy
CN102041396A (en) * 2010-10-28 2011-05-04 湖南晟通科技集团有限公司 Preparation method of scouring agent for aluminum and aluminum alloy

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102605201A (en) * 2012-03-21 2012-07-25 南昌大学 Covering agent for copper and copper alloy smelting
CN102965536A (en) * 2012-11-13 2013-03-13 宁波杭州湾新区珠峰企业管理服务有限公司 Aluminum alloy smelting refining agent
CN102965536B (en) * 2012-11-13 2015-07-08 宁波杭州湾新区第九区科技服务有限公司 Aluminum alloy smelting refining agent
CN103031456A (en) * 2012-12-05 2013-04-10 安徽徽铝铝业有限公司 Preparation method of refining agent for smelting high-purity aluminum alloy sectional material
CN103088226A (en) * 2012-12-05 2013-05-08 安徽徽铝铝业有限公司 Preparation method of refining agent for melting aluminum alloy section doped with plant ash
CN103088226B (en) * 2012-12-05 2015-11-25 安徽徽铝铝业有限公司 A kind of refining agent for smelting preparation method of the aluminium alloy extrusions doped with plant ash
CN103031456B (en) * 2012-12-05 2015-06-24 安徽徽铝铝业有限公司 Preparation method of refining agent for smelting high-purity aluminum alloy sectional material
CN103361487B (en) * 2013-07-22 2015-04-22 南南铝业股份有限公司 Production method of recycled aluminum
CN103361487A (en) * 2013-07-22 2013-10-23 南南铝业股份有限公司 Production method of recycled aluminum
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
CN103643069A (en) * 2013-12-10 2014-03-19 南南铝业股份有限公司 Aluminum alloy refining agent
CN103643069B (en) * 2013-12-10 2016-06-29 南南铝业股份有限公司 Aluminum refining agent
CN103725913A (en) * 2013-12-31 2014-04-16 焦作市圣昊铝业有限公司 Demagging agent for aluminum alloy
CN103820667A (en) * 2014-03-06 2014-05-28 大连理工大学 Covering agent and aluminium-silicon alloy melt processing method
CN103820667B (en) * 2014-03-06 2015-12-30 大连理工大学 Insulating covering agent and Al-Si alloy melt treatment process
CN104388730A (en) * 2014-11-20 2015-03-04 无锡鸿声铝业有限公司 Efficient refining agent for aluminum alloy and preparation method thereof
CN107407522A (en) * 2015-03-03 2017-11-28 Ds液体有限公司 aluminium smelting furnace
CN105132731A (en) * 2015-09-30 2015-12-09 湖南创元铝业有限公司 Covering agent for aluminum and aluminum alloy smelting and preparing method of covering agent
CN105316508B (en) * 2015-10-21 2018-07-27 广西平果铝合金精密铸件有限公司 A kind of aluminum refining agent of the erbium of lanthanum containing cerium
CN105316508A (en) * 2015-10-21 2016-02-10 广西平果铝合金精密铸件有限公司 Aluminum alloy refining agent containing Ce, La and Er
CN105779803A (en) * 2016-05-20 2016-07-20 湖南东方钪业股份有限公司 Composite alterant for aluminum alloy and preparing method of composite alterant
CN106277005A (en) * 2016-08-27 2017-01-04 盛隆资源再生（无锡）有限公司 A kind of recovery cryolite, calcium carbonate and method of sodium sulfate from calcium fluoride sludge resource
CN107557604A (en) * 2017-10-30 2018-01-09 湖南博溥立材料科技有限公司 Aluminum refining agent and preparation method thereof
CN109055797A (en) * 2018-08-29 2018-12-21 佛山朝鸿新材料科技有限公司 A kind of preparation method of aluminium alloy compound refining agent
CN109306412A (en) * 2018-12-20 2019-02-05 河北四通新型金属材料股份有限公司 A kind of aluminium and aluminium alloy high-efficiency environment friendly refining agent and preparation method thereof
CN111041264A (en) * 2020-01-16 2020-04-21 深圳市新星轻合金材料股份有限公司 Preparation method of aluminum alloy refining agent
CN112458312A (en) * 2020-11-25 2021-03-09 中国恩菲工程技术有限公司 Refining agent for smelting aluminum or aluminum alloy and application thereof

Similar Documents

Publication Publication Date Title
CN102312104A (en) Refining agent for aluminium and aluminium alloy melting
CN102041396B (en) Preparation method of scouring agent for aluminum and aluminum alloy
CN1026709C (en) Slag remover for refining Al or Al alloy
CN102605193B (en) Refining agent for copper and copper alloy smelting
CN103981386A (en) Method for modification and refinement of hypoeutectic and eutectic Al-Si alloy
CN103801678B (en) A kind of brass alloys covering slag-cleaning agent and preparation method thereof
CN105316510A (en) Aluminum alloy refining agent containing rear earth
DE112008000682T5 (en) Process for cleaning silicon
CN104878237B (en) A kind of brass borings smelting agent and the method for brass borings melting thereof
CN102127647A (en) Multifunctional demagging agent
EP2446065B1 (en) USE OF A BINARY SALT FLUX OF NaCl AND MgCI2 FOR THE PURIFICATION OF ALUMINUM OR ALUMINUM ALLOYS, AND METHOD THEREOF
CN102676825A (en) Iron removal agent and iron removal method for recovering waste aluminum
CN103773968B (en) Method and system for removing gas and slag in aluminum melt by three-phase combination
CN104593629A (en) Copper alloy pipe fusion covering agent
CN101555554A (en) Copper smelting agent and manufacture process thereof
CN104291340B (en) Method for removing phosphorus in industrial silicon
CN108165765A (en) The technique that a kind of copper scap directly produces oxygen-free copper bar
CN103911522A (en) Recovery treatment method for used magnesium smelting fluxing agent or magnesium alloy smelting fluxing agent
CN102304634B (en) Refining agent for smelting tin bronze alloy
CN104831103B (en) A kind of aluminium-alloy iron-removing solvent and preparation method thereof
CN103589918B (en) A kind of melting technology of end cap alloy
JP2012254894A (en) Method for purifying silicon
CN108546838A (en) A method of preparing aluminium erbium intermediate alloy using low-grade erbium oxide
CN1195084C (en) Filtering process of eliminating non-metallic foreign impurity ion aluminium melt
NO154192B (en) PROCEDURE FOR CLEANING OF SILICONE.

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20120111