CN102286667A - Sodium-free refining agent for aluminum and aluminum alloy and production method thereof - Google Patents

Sodium-free refining agent for aluminum and aluminum alloy and production method thereof Download PDF

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Publication number
CN102286667A
CN102286667A CN2011102409851A CN201110240985A CN102286667A CN 102286667 A CN102286667 A CN 102286667A CN 2011102409851 A CN2011102409851 A CN 2011102409851A CN 201110240985 A CN201110240985 A CN 201110240985A CN 102286667 A CN102286667 A CN 102286667A
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Prior art keywords
sodium
refining agent
percent
aluminium
aluminum
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CN2011102409851A
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Chinese (zh)
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CN102286667B (en
Inventor
臧立国
王文红
马涛
范建海
王会林
郝丽荣
陈邵龙
马明明
赵娜娜
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河北四通新型金属材料股份有限公司
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Abstract

The invention discloses a sodium-free refining agent for aluminum and aluminum alloy, which consists of the following ingredients in percentage by weight: 15 to 25 percent of potassium aluminium fluoride, 5 to 15 percent of calcium fluoride, 10 to 25 percent of potassium carbonate, 10 to 25 percent of potassium sulfate, 5 to 15 percent of barium sulfate, 15 to 30 percent of potassium chloride and 3 to 5 percent of anhydrous aluminium chloride. The invention also discloses a production method of the sodium-free refining agent. Because the sodium-free refining agent does not contain sodium salts, compared with sodium-containing refining agents, the sodium-free refining agent effectively solves the problem of antimony modification and phosphor modification influence caused by more or less sodium salt contained in the existing refining agent and overcomes the defects of alloy casting performance influence, melt flowability reduction and sodium brittleness possibly caused by the sodium element in aluminum-magnesium system alloy with the magnesium content being higher than 2 percent. A better use effect can be obtained in the antimony modification and phosphor modification alloys and high-magnesium-aluminum alloy. The invention belongs to the qualitative improvement on the prior art.

Description

A kind of aluminium and aluminium alloy no sodium refining agent and production method thereof
Technical field
The present invention relates to the no sodium refining agent of a kind of aluminium and aluminium alloy smelting, the invention still further relates to the production method of this kind refining agent.
Background technology
Aluminium and aluminium alloy be melting under non-vacuum condition generally, and absorbing environmental gas and chemical reaction takes place form and be mingled with very easily in this process reduces the mechanical property of alloy greatly.If will be without the aluminium liquid direct production foundry goods of purifying treatment, then in process of setting in the aluminium liquid dissolved gases float along with the reduction of solubleness, the inner oxide inclusion that exists of foundry goods in addition, make foundry goods casting flaws such as pore, crackle occur, have a strong impact on casting quality, even make product rejection.Therefore, must carry out purifying treatment,, purify alloy melt, thereby improve the quality of alloy to remove gas, metal oxide, non-metallic inclusion and other harmful element wherein to aluminium and aluminium alloy melt.
Aluminium and purifying aluminium alloy melt method have filtration, purification, non-adsorption cleaning and adsorption cleaning three major types.Filtration, purification is to utilize strainer to filter, but treatment capacity is little, needs the periodic replacement filtration medium, and running cost is higher, except that specific alloy, uses less in the actual production.Non-adsorption cleaning mainly contains vacuum purification method, ultrasonic purification method and electromagnetic purification method etc., but facility investment is big, and the running cost height also only is suitable for specific alloy production.Adsorption cleaning mainly contains blowing inert gas, reactive gas winding-up, mixed gas winding-up, the refining agent method of purification etc., wherein the refining agent method of purification is owing to have easy handling, cheap, advantage such as decontamination effect improving is better has obtained widespread use in actual production.
At present, disclosed refining agent product generally all contains one or more in the sodium salts such as sodium-chlor, sodium fluoroaluminate, Sodium Silicofluoride, Sodium Fluoride.Announced a kind of aluminum-silicon alloy refining agent as Chinese invention patent CN101343699A, it mainly is made up of Repone K, sodium-chlor, zinc chloride, sodium fluoroaluminate, Sodium Silicofluoride, SODIUMNITRATE, Graphite Powder 99, wood charcoal powder, hexachloroethane, Sodium tetrafluoroborate, potassium fluotitanate, is applicable to the casting of aluminum silicon alloy; Chinese invention patent CN101423910A has announced a kind of aluminium and low magnalium refining agent, and it mainly is made up of sodium-chlor, sodium sulfate, Calcium Fluoride (Fluorspan), Repone K, magnesium chloride, Sodium Silicofluoride, is applicable to the refining less than 2% aluminium alloy of aluminium and Mg content; Chinese invention patent CN101967565A has announced a kind of aluminium and aluminium alloy refining agent, it mainly is made up of sodium-chlor, Sodium Silicofluoride, sodium sulfate, Calcium Fluoride (Fluorspan), hexachloroethane, this refining agent can also comprise one or more in magnesium calcium carbonate, sodium fluoroaluminate, Sulfothiorine, the Sodium Fluoride, this refining agent does not contain sylvite, corrosion to electrolyzer is little, can realize back that with the aluminium ash that produces behind this refining agent refined aluminum and the aluminium alloy electrolyzer utilizes again.Above refining agent can reach refining effect preferably in its scope of application.But the defective of prior art is: because existing refining agent all contains sodium salt more or less, add and can generate the sodium element of free state with reactive aluminum in the aluminium liquid and dissolve in the molten aluminium.Sodium element can generate Na with antimony 3The Sb compound can generate Na with phosphorus 3P-compound has been deprived AlSb, the AlP effect as heterogeneous forming core core, thereby influences the effect of antimony metamorphic, phosphorus modification.In addition, sodium element not only can cause " sodium fragility " at Mg content in greater than 2% aluminum-magnesium series alloy, and reduces fluidity of molten, influences the castability of alloy.Sodium Silicofluoride also can generate the silicon tetrafluoride with intense stimulus smell with reactive aluminum, and exhaust gas volumn is big, worsens working conditions, contaminate environment.But owing to receive the constraint that vital role that salt risen and existing refining agent be subjected to traditional prescription theory in refining agent, make a general survey of prior art, also find no the refining agent appearance that does not contain sodium element.
Summary of the invention
The objective of the invention is to contain the deficiency that the sodium refining agent influences aluminium alloy antimony metamorphic, phosphorus modification effect and high-magnesium aluminum alloy quality, provide a kind of aluminium and aluminium alloy no sodium refining agent at prior art.
Another object of the present invention provides the production method of this refining agent.
The present invention is realized by following technical scheme, the no sodium refining agent of aluminium and aluminium alloy, be made up of potassium fluoroaluminate, Calcium Fluoride (Fluorspan), salt of wormwood, vitriolate of tartar, barium sulfate, Repone K, Aluminum chloride anhydrous, said components content by mass percentage is: potassium fluoroaluminate 15-25%, Calcium Fluoride (Fluorspan) 5-15%, salt of wormwood 10-25%, vitriolate of tartar 10-25%, barium sulfate 5-15%, Repone K 15-30%, Aluminum chloride anhydrous 3-5%.
The no sodium refining agent of aluminium and aluminium alloy, optimum content by mass percentage is: potassium fluoroaluminate 20%, Calcium Fluoride (Fluorspan) 10%, salt of wormwood 16%, vitriolate of tartar 20%, barium sulfate 10%, Repone K 20%, Aluminum chloride anhydrous 4%.
The no sodium refining agent production method of aluminium and aluminium alloy follows these steps to carry out:
A, the material of will filling a prescription sieve respectively, choose the part of granularity between the 30-150 order;
B, will through the screening material prepare burden according to formula rate;
C, material is dropped into mixer mix, when being mixed to about 10 minutes, the material in the mixer being emitted about 1/3rd add mixer from opening for feed again, and then mixed 10-15 minute, guarantee that the material thorough mixing is even;
D, the refining agent of making is carried out moisture and granularity Detection, detect and be packaged into finished product after qualified.
Above starting material all adopt technical grade product, purity 〉=98%, and moisture≤0.2%, granularity is between the 30-150 order.
Formulating of recipe of the present invention is reasonable, and production method is simply easy to implement, has broken the theory circle that existing refining agent technology has to use sodium salt.Facts have proved that because the present invention's prescription does not contain sodium salt, degasification, slagging-off better effects if not only can be used for the refining of conventional aluminium and aluminium alloy, more are applicable to the refining purifying treatment of antimony metamorphic, phosphorus modification and high magnesium alloy.After testing, the no sodium refining agent that adopts the present invention to produce can be widely used in the refining treatment of aluminium and aluminium alloy, effectively purifies melt, and exhaust gas volumn is less simultaneously, effectively improves operating environment.Aluminium liquid inner air vent and oxide inclusion content after the processing significantly reduce, and pinhole rate can reach the 1-2 grade standard, adopt the K mould to detect aluminium liquid purity more than the A level reaches.Because the present invention does not contain sodium salt, with contain the sodium refining agent and compare, efficiently solve existing refining agent owing to the sodium salt that contains more or less, influencing the defective of antimony metamorphic, phosphorus modification and sodium element can cause " sodium fragility ", reduces fluidity of molten, influence the deficiency of the castability of alloy greater than 2% aluminum-magnesium series alloy at Mg content, can obtain better result of use in antimony metamorphic, phosphorus modification aluminium alloy and high-magnesium aluminum alloy, be the improvement to a matter of prior art.
Embodiment
Embodiment 1:
Potassium fluoroaluminate 22%, Calcium Fluoride (Fluorspan) 5%, salt of wormwood 25%, vitriolate of tartar 25%, barium sulfate 5%, Repone K 15%, Aluminum chloride anhydrous 3%.The above material particle size of strict control is between the 30-150 order, and moisture is no more than 0.2%, then sieves and dry processing earlier as not satisfying.To drop into spiral mixer after the above mixing of materials, batch mixing is emitted about 1/3rd and is added mixer from charging opening again about 10 minutes, and then mixes 10-15 minute.The refining agent of making carries out granularity and water content detection, detects qualified back and packs according to 2Kg/ bag or 2.5Kg/ bag standard.
Embodiment 2:
Potassium fluoroaluminate 15%, Calcium Fluoride (Fluorspan) 10%, salt of wormwood 13%, vitriolate of tartar 18%, barium sulfate 10%, Repone K 30%, Aluminum chloride anhydrous 4%.The above material particle size of strict control is between the 30-150 order, and moisture is no more than 0.2%, then sieves and dry processing earlier as not satisfying.To drop into spiral mixer after the above mixing of materials, batch mixing is emitted about 1/3rd and is added mixer from charging opening again about 10 minutes, and then mixes 10-15 minute.The refining agent of making carries out granularity and water content detection, detects qualified back and packs according to 2Kg/ bag or 2.5Kg/ bag standard.
Embodiment 3:
Potassium fluoroaluminate 25%, Calcium Fluoride (Fluorspan) 10%, salt of wormwood 10%, vitriolate of tartar 18%, barium sulfate 10%, Repone K 22%, Aluminum chloride anhydrous 5%.The above material particle size of strict control is between the 30-150 order, and moisture is no more than 0.2%, then sieves and dry processing earlier as not satisfying.To drop into spiral mixer after the above mixing of materials, batch mixing is emitted about 1/3rd and is added mixer from charging opening again about 10 minutes, and then mixes 10-15 minute.The refining agent of making carries out granularity and water content detection, detects qualified back and packs according to 2Kg/ bag or 2.5Kg/ bag standard.
Embodiment 4:
Potassium fluoroaluminate 18%, Calcium Fluoride (Fluorspan) 10%, salt of wormwood 16%, vitriolate of tartar 20%, barium sulfate 10%, Repone K 21%, Aluminum chloride anhydrous 5%.The above material particle size of strict control is between the 30-150 order, and moisture is no more than 0.2%, then sieves and dry processing earlier as not satisfying.To drop into spiral mixer after the above mixing of materials, batch mixing is emitted about 1/3rd and is added mixer from charging opening again about 10 minutes, and then mixes 10-15 minute.The refining agent of making carries out granularity and water content detection, detects qualified back and packs according to 2Kg/ bag or 2.5Kg/ bag standard.
Embodiment 5:
Potassium fluoroaluminate 15%, Calcium Fluoride (Fluorspan) 15%, salt of wormwood 25%, vitriolate of tartar 10%, barium sulfate 15%, Repone K 16%, Aluminum chloride anhydrous 4%.The above material particle size of strict control is between the 30-150 order, and moisture is no more than 0.2%, then sieves and dry processing earlier as not satisfying.To drop into spiral mixer after the above mixing of materials, batch mixing is emitted about 1/3rd and is added mixer from charging opening again about 10 minutes, and then mixes 10-15 minute.The refining agent of making carries out granularity and water content detection, detects qualified back and packs according to 2Kg/ bag or 2.5Kg/ bag standard.

Claims (3)

1. aluminium and aluminium alloy are with no sodium refining agent, it is characterized in that, be made up of potassium fluoroaluminate, Calcium Fluoride (Fluorspan), salt of wormwood, vitriolate of tartar, barium sulfate, Repone K, Aluminum chloride anhydrous, said components content by mass percentage is: potassium fluoroaluminate 15-25%, Calcium Fluoride (Fluorspan) 5-15%, salt of wormwood 10-25%, vitriolate of tartar 10-25%, barium sulfate 5-15%, Repone K 15-30%, Aluminum chloride anhydrous 3-5%.
2. the no sodium refining agent of aluminium according to claim 1 and aluminium alloy, it is characterized in that optimum content by mass percentage is: potassium fluoroaluminate 20%, Calcium Fluoride (Fluorspan) 10%, salt of wormwood 16%, vitriolate of tartar 20%, barium sulfate 10%, Repone K 20%, Aluminum chloride anhydrous 4%.
3. aluminium and aluminium alloy is characterized in that with no sodium refining agent production method, follow these steps to carry out:
A, the material of will filling a prescription sieve respectively, choose the part of granularity between the 30-150 order;
B, will through the screening material prepare burden according to formula rate;
C, material is dropped into mixer mix, when being mixed to about 10 minutes, the material in the mixer being emitted about 1/3rd add mixer from opening for feed again, and then mixed 10-15 minute, guarantee that the material thorough mixing is even;
D, the refining agent of making is carried out moisture and granularity Detection, detect and be packaged into finished product after qualified.
CN 201110240985 2011-08-20 2011-08-20 Sodium-free refining agent for aluminum and aluminum alloy and production method thereof CN102286667B (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102644002A (en) * 2012-05-16 2012-08-22 山东滨州渤海活塞股份有限公司 Aluminium alloy solution refined chlorine-free slag remover
CN102912166A (en) * 2012-10-31 2013-02-06 济南山大有色金属铸造有限公司 Aluminum alloy sodium-free refining agent and method for producing same
CN102925732A (en) * 2012-09-26 2013-02-13 霍山县龙鑫金属制品有限公司 Method for smelting aluminium alloy doped with magnesium element
CN103014396A (en) * 2012-12-05 2013-04-03 安徽徽铝铝业有限公司 Preparation method of refining agent used for smelting aluminium alloy sections
CN103031454A (en) * 2012-12-05 2013-04-10 安徽徽铝铝业有限公司 Preparation method of refining agent for smelting aluminum alloy
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
CN104278168A (en) * 2014-10-31 2015-01-14 湖州织里天荣铝材添加剂厂 Aluminum alloy sodium-free refining agent and preparation process thereof
CN105369044A (en) * 2015-10-21 2016-03-02 广西平果铝合金精密铸件有限公司 Aluminum alloy sodium-free refining agent containing cerium, lanthanum and erbium
CN105821228A (en) * 2016-05-03 2016-08-03 贵州航天风华精密设备有限公司 Aluminum alloy sodium-free refining agent and application thereof
CN106811614A (en) * 2015-11-27 2017-06-09 比亚迪股份有限公司 A kind of die casting silico-aluminum of the preparation method and preparation of silico-aluminum refining deterioration agent and preparation method thereof and die casting silico-aluminum
CN108130439A (en) * 2016-12-01 2018-06-08 铜山县超特有色金属添加剂厂 One kind is smokelessly without sodium slag-cleaning agent and preparation method thereof
CN110042276A (en) * 2019-04-24 2019-07-23 安徽省金兰金盈铝业有限公司 A kind of processing technology of traffic lightweight Al-alloy material
CN110184485A (en) * 2019-06-05 2019-08-30 福建船政交通职业学院 3003 aluminum alloy plate materials of one kind and its pre-treating technology

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CN101942579A (en) * 2010-10-14 2011-01-12 宁波翔博机械有限公司 Additive for aluminum alloy fusant and addition method thereof

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CN1073486A (en) * 1991-12-16 1993-06-23 东北工学院 The aluminum or aluminum alloy slag remover for refining
CN1132257A (en) * 1995-03-28 1996-10-02 张鑫珩 Modified compounded molten solvent for refined Al-Al alloy
CN1394975A (en) * 2002-06-28 2003-02-05 山东大学 Special degasifier for cleaning aluminium alloy and its application method
CN101942579A (en) * 2010-10-14 2011-01-12 宁波翔博机械有限公司 Additive for aluminum alloy fusant and addition method thereof

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102644002B (en) * 2012-05-16 2013-09-04 山东滨州渤海活塞股份有限公司 Aluminium alloy solution refined chlorine-free slag remover
CN102644002A (en) * 2012-05-16 2012-08-22 山东滨州渤海活塞股份有限公司 Aluminium alloy solution refined chlorine-free slag remover
CN102925732A (en) * 2012-09-26 2013-02-13 霍山县龙鑫金属制品有限公司 Method for smelting aluminium alloy doped with magnesium element
CN102912166A (en) * 2012-10-31 2013-02-06 济南山大有色金属铸造有限公司 Aluminum alloy sodium-free refining agent and method for producing same
CN102912166B (en) * 2012-10-31 2013-09-18 济南山大有色金属铸造有限公司 Aluminum alloy sodium-free refining agent and method for producing same
CN103031454A (en) * 2012-12-05 2013-04-10 安徽徽铝铝业有限公司 Preparation method of refining agent for smelting aluminum alloy
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
CN103031454B (en) * 2012-12-05 2015-06-03 安徽徽铝铝业有限公司 Preparation method of refining agent for smelting aluminum alloy
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
CN103014396A (en) * 2012-12-05 2013-04-03 安徽徽铝铝业有限公司 Preparation method of refining agent used for smelting aluminium alloy sections
CN103014396B (en) * 2012-12-05 2015-03-04 安徽徽铝铝业有限公司 Preparation method of refining agent used for smelting aluminium alloy sections
CN104278168A (en) * 2014-10-31 2015-01-14 湖州织里天荣铝材添加剂厂 Aluminum alloy sodium-free refining agent and preparation process thereof
CN105369044A (en) * 2015-10-21 2016-03-02 广西平果铝合金精密铸件有限公司 Aluminum alloy sodium-free refining agent containing cerium, lanthanum and erbium
CN106811614A (en) * 2015-11-27 2017-06-09 比亚迪股份有限公司 A kind of die casting silico-aluminum of the preparation method and preparation of silico-aluminum refining deterioration agent and preparation method thereof and die casting silico-aluminum
CN106811614B (en) * 2015-11-27 2019-02-26 比亚迪股份有限公司 A kind of die casting silico-aluminum of the preparation method and preparation of silico-aluminum refining deterioration agent and preparation method thereof and die casting silico-aluminum
CN105821228A (en) * 2016-05-03 2016-08-03 贵州航天风华精密设备有限公司 Aluminum alloy sodium-free refining agent and application thereof
CN108130439A (en) * 2016-12-01 2018-06-08 铜山县超特有色金属添加剂厂 One kind is smokelessly without sodium slag-cleaning agent and preparation method thereof
CN110042276A (en) * 2019-04-24 2019-07-23 安徽省金兰金盈铝业有限公司 A kind of processing technology of traffic lightweight Al-alloy material
CN110184485A (en) * 2019-06-05 2019-08-30 福建船政交通职业学院 3003 aluminum alloy plate materials of one kind and its pre-treating technology

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