CN108179298A - A kind of aluminium scrap refining agent for improving aluminium casting performance - Google Patents
A kind of aluminium scrap refining agent for improving aluminium casting performance Download PDFInfo
- Publication number
- CN108179298A CN108179298A CN201711489783.4A CN201711489783A CN108179298A CN 108179298 A CN108179298 A CN 108179298A CN 201711489783 A CN201711489783 A CN 201711489783A CN 108179298 A CN108179298 A CN 108179298A
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- parts
- aluminium
- refining agent
- powder
- improving
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Classifications
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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
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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
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
Abstract
The invention belongs to Way of Remelting Scrap Aluminium refining agent technical fields, and in particular to a kind of aluminium scrap refining agent for improving aluminium casting performance includes the raw material of following parts by weight：36 parts of modified graphene, 6 10 parts of nano silicon nitride calcium, 24 parts of titanium dioxide, 13 parts of ammonium fluoroborate, 0.8 1.6 parts of epidesmine powder, 0.4 0.8 parts of aluminium oxide, 0.1 0.3 parts of sulphur, 46 parts of h-mordenite powder, 0.1 0.3 parts of aluminium-magnesium silicate；Wherein described modified graphene is obtained by 2 hydroxypropyltrimethylammonium chloride chitosan as modifier modification.The present invention has the following advantages compared with prior art：Refining agent can obtain high-quality scrap aluminium alloy melt in the present invention, can reduce the microporosity of gained casting, and mechanical property can also dramatically increase.
Description
Technical field
The invention belongs to Way of Remelting Scrap Aluminium refining agent technical fields, and in particular to a kind of aluminium scrap essence for improving aluminium casting performance
Refine agent.
Background technology
Recycling Aluminum Industry has become aluminum i ndustry and develops essential important component, and the whole world is often close on 1200
Ten thousand tons of the various miscellaneous aluminium that give up are by being process as secondary aluminium alloy, and it is aluminium that secondary aluminium, which prepares high-performance aluminium alloy technology,
The certainty of processing technology progress, the maximum technology barrier that production premium quality product is regenerated currently with aluminium scrap is can not to obtain conjunction
Suitable chemical composition, this is because the removal process of aluminium scrap raw material mostly loses specification, i.e., it is substantially not right in removal process
The raw material of different aluminum alloys is effectively classified, even if being the aluminium scrap raw material of import, be equally mix serious different chemistry into
Divide the mixture of raw material, meanwhile, it is no lack of in the aluminum alloy part of recycling either compound with the assembly of other metals such as iron, copper
Product, therefore 0.8% mostly is generally reached containing the higher non-aluminium element of content, such as the content of iron in aluminium scrap raw material, the content of silicon
Reach 4%, the content of copper is also above 1%, therefore, routinely production technology is smelting, ingot casting and deformation processing etc. be difficult to by
Aluminium scrap raw material produces the alloy product that chemical composition is met the requirements of the standard, and is needed during aluminium alloy smelting using covering
Agent, slagging agent, slag-cleaning agent, refining agent etc., aluminium scrap need to add in refining agent, the manufacture of traditional aluminium scrap when temperature reaches 720 DEG C
The refining agent used in the process, the degree of porosity that can lead to finished product is higher, can generate stomata in cast(ing) surface, aoxidize the ratio of sundries
Also it is higher, influence the performance of aluminium casting.
Invention content
The purpose of the present invention is being directed to the problem of existing, a kind of aluminium scrap refining agent for improving aluminium casting performance is provided.
The present invention is achieved by the following technical solutions：A kind of aluminium scrap refining agent for improving aluminium casting performance, including
The raw material of following parts by weight：3-6 parts of modified graphene, 6-10 parts of nano silicon nitride calcium, 2-4 parts of titanium dioxide, 1-3 parts of ammonium fluoroborate,
0.8-1.6 parts of epidesmine powder, 0.4-0.8 parts of aluminium oxide, 0.1-0.3 parts of sulphur, 4-6 parts of h-mordenite powder, magnesium silicate
0.1-0.3 parts of aluminium；Wherein described modified graphene is obtained by 2- hydroxypropyltrimethylammonium chloride chitosan as modifier modification.
As further improvement of these options, the epidesmine powder is obtained by calcium nitrate and zinc nitrate modified zeolite powder
It arrives.
As further improvement of these options, the mass ratio of h-mordenite powder silica/alumina is
22.3, specific surface area 514M2/G, sodium oxide molybdena ＜ 100PPM, aperture 6.7 × 7.0 × 10-10M, water content is during absorption equilibrium
14.7wt%。
As further improvement of these options, the preparation method of the refining agent is, after each raw material is mixed, in nitrogen
Atmosphere is enclosed lower ball milling 6-10 minutes, and it is 200-600 μm to obtain grain size.
As further improvement of these options, the ratio of grinding media to material is 12-16:1, rotating speed is 3000-4000 revs/min
Clock.
The present invention has the following advantages compared with prior art：Refining agent can obtain high-quality scrap aluminium alloy and melt in the present invention
Liquid can reduce the microporosity of gained casting, improve production yield rate, shorten refining time, and mechanical property can also be shown
Writing increases.
Specific embodiment
Embodiment 1
A kind of aluminium scrap refining agent for improving aluminium casting performance includes the raw material of following parts by weight：Modified graphene 4 part, nanometer
8 parts of CaCl2,3 parts of titanium dioxide, 2 parts of ammonium fluoroborate, 1.2 parts of epidesmine powder, 0.6 part of aluminium oxide, 0.2 part of sulphur, Hydrogen silk
5 parts of geolyte powder, 0.2 part of aluminium-magnesium silicate；Wherein described modified graphene is by 2- hydroxypropyltrimethylammonium chloride chitosan conducts
Modifier modification obtains.
Wherein, the epidesmine powder is obtained by calcium nitrate and zinc nitrate modified zeolite powder；H-mordenite powder dioxy
The mass ratio of SiClx/aluminium oxide is 22.3, specific surface area 514M2/G, sodium oxide molybdena ＜ 100PPM, aperture 6.7 × 7.0 × 10- 10M, water content is 14.7wt% during absorption equilibrium；The preparation method of the refining agent is, after each raw material is mixed, in nitrogen atmosphere
Lower ball milling 8 minutes, it is 200-600 μm to obtain grain size；The ratio of grinding media to material is 14:1, rotating speed is 3500 revs/min.
Its surface tension improves 13.8% after testing, and yield strength improves 12.6%, due to rejection rate caused by pore defect
It is reduced to less than 3%.
Embodiment 2
A kind of aluminium scrap refining agent for improving aluminium casting performance includes the raw material of following parts by weight：Modified graphene 3 part, nanometer
6 parts of CaCl2,2 parts of titanium dioxide, 3 parts of ammonium fluoroborate, 0.8 part of epidesmine powder, 0.4 part of aluminium oxide, 0.1 part of sulphur, Hydrogen silk
6 parts of geolyte powder, 0.1 part of aluminium-magnesium silicate；Wherein described modified graphene is by 2- hydroxypropyltrimethylammonium chloride chitosan conducts
Modifier modification obtains.
Wherein, the epidesmine powder is obtained by calcium nitrate and zinc nitrate modified zeolite powder；H-mordenite powder dioxy
The mass ratio of SiClx/aluminium oxide is 22.3, specific surface area 514M2/G, sodium oxide molybdena ＜ 100PPM, aperture 6.7 × 7.0 × 10- 10M, water content is 14.7wt% during absorption equilibrium；The preparation method of the refining agent is, after each raw material is mixed, in nitrogen atmosphere
Lower ball milling 10 minutes, it is 200-600 μm to obtain grain size；The ratio of grinding media to material is 12:1, rotating speed is 4000 revs/min.
Its surface tension improves 15.2% after testing, and yield strength improves 13.4%, due to rejection rate caused by pore defect
It is reduced to less than 3%.
Embodiment 3
A kind of aluminium scrap refining agent for improving aluminium casting performance includes the raw material of following parts by weight：Modified graphene 6 part, nanometer
10 parts of CaCl2,4 parts of titanium dioxide, 1 part of ammonium fluoroborate, 1.6 parts of epidesmine powder, 0.8 part of aluminium oxide, 0.3 part of sulphur, Hydrogen silk
4 parts of geolyte powder, 0.3 part of aluminium-magnesium silicate；Wherein described modified graphene is by 2- hydroxypropyltrimethylammonium chloride chitosan conducts
Modifier modification obtains.
Wherein, the epidesmine powder is obtained by calcium nitrate and zinc nitrate modified zeolite powder；H-mordenite powder dioxy
The mass ratio of SiClx/aluminium oxide is 22.3, specific surface area 514M2/G, sodium oxide molybdena ＜ 100PPM, aperture 6.7 × 7.0 × 10- 10M, water content is 14.7wt% during absorption equilibrium；The preparation method of the refining agent is, after each raw material is mixed, in nitrogen atmosphere
Lower ball milling 6 minutes, it is 200-600 μm to obtain grain size；The ratio of grinding media to material is 16:1, rotating speed is 3000 revs/min.
Its surface tension improves 13.4% after testing, and yield strength improves 12.9%, due to rejection rate caused by pore defect
It is reduced to less than 3%.
Claims (5)
1. a kind of aluminium scrap refining agent for improving aluminium casting performance, which is characterized in that include the raw material of following parts by weight：Modified stone
Black alkene 3-6 parts, 6-10 parts of nano silicon nitride calcium, 2-4 parts of titanium dioxide, 1-3 parts of ammonium fluoroborate, 0.8-1.6 parts of epidesmine powder, oxidation
0.4-0.8 parts of aluminium, 0.1-0.3 parts of sulphur, 4-6 parts of h-mordenite powder, 0.1-0.3 parts of aluminium-magnesium silicate；Wherein described modification
Graphene is obtained by 2- hydroxypropyltrimethylammonium chloride chitosan as modifier modification.
A kind of 2. aluminium scrap refining agent for improving aluminium casting performance as described in claim 1, which is characterized in that the epidesmine
Powder is obtained by calcium nitrate and zinc nitrate modified zeolite powder.
A kind of 3. aluminium scrap refining agent for improving aluminium casting performance as described in claim 1, which is characterized in that h-mordenite
The mass ratio of powder silica/alumina is 22.3, specific surface area 514M2/G, sodium oxide molybdena ＜ 100PPM, aperture 6.7 × 7.0
×10-10M, water content is 14.7wt% during absorption equilibrium.
4. a kind of aluminium scrap refining agent for improving aluminium casting performance as described in claim 1, which is characterized in that the refining agent
Preparation method is, after each raw material is mixed, ball milling 6-10 minutes under nitrogen atmosphere, it was 200-600 μm to obtain grain size.
5. a kind of aluminium scrap refining agent for improving aluminium casting performance as claimed in claim 4, which is characterized in that the ratio of grinding media to material is
12-16:1, rotating speed is 3000-4000 revs/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711489783.4A CN108179298A (en) | 2017-12-30 | 2017-12-30 | A kind of aluminium scrap refining agent for improving aluminium casting performance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711489783.4A CN108179298A (en) | 2017-12-30 | 2017-12-30 | A kind of aluminium scrap refining agent for improving aluminium casting performance |
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| CN108179298A true CN108179298A (en) | 2018-06-19 |
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| CN201711489783.4A Pending CN108179298A (en) | 2017-12-30 | 2017-12-30 | A kind of aluminium scrap refining agent for improving aluminium casting performance |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109082556A (en) * | 2018-04-13 | 2018-12-25 | 湖北金洋资源股份公司 | A kind of smokeless refining agent, preparation method and refinery practice |
| CN110527859A (en) * | 2019-09-17 | 2019-12-03 | 四川兰德高科技产业有限公司 | Aluminium alloy free-floride is without the granular refining agent of sodium hollow ball shape and preparation method and application |
| CN110616348A (en) * | 2019-09-18 | 2019-12-27 | 沈阳化工大学 | Preparation method of efficient aluminum alloy magnesium removing agent |
-
2017
- 2017-12-30 CN CN201711489783.4A patent/CN108179298A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109082556A (en) * | 2018-04-13 | 2018-12-25 | 湖北金洋资源股份公司 | A kind of smokeless refining agent, preparation method and refinery practice |
| CN110527859A (en) * | 2019-09-17 | 2019-12-03 | 四川兰德高科技产业有限公司 | Aluminium alloy free-floride is without the granular refining agent of sodium hollow ball shape and preparation method and application |
| CN110527859B (en) * | 2019-09-17 | 2020-11-10 | 四川兰德高科技产业有限公司 | Fluorine-free sodium-free hollow spherical granular refining agent for aluminum alloy and preparation method and application thereof |
| CN110616348A (en) * | 2019-09-18 | 2019-12-27 | 沈阳化工大学 | Preparation method of efficient aluminum alloy magnesium removing agent |
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Application publication date: 20180619 |