CN103122419A - Method for preparing refining agent doped with straw ash and used for smelting aluminum alloy section - Google Patents
Method for preparing refining agent doped with straw ash and used for smelting aluminum alloy section Download PDFInfo
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- CN103122419A CN103122419A CN201210515405XA CN201210515405A CN103122419A CN 103122419 A CN103122419 A CN 103122419A CN 201210515405X A CN201210515405X A CN 201210515405XA CN 201210515405 A CN201210515405 A CN 201210515405A CN 103122419 A CN103122419 A CN 103122419A
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Abstract
The invention discloses a method for preparing a refining agent doped with straw ash and used for smelting aluminum alloy section. The refining agent is prepared from following components in parts by weight: 6-8 parts of lithium chloride, 4-6 parts of straw ash, 6-8 parts of magnesium chloride, 3-5 parts of calcium fluoride, 3-5 parts of sodium nitrate, 5-8 parts of mountain flour, 8-10 parts of sodium fluosilicate, 3-5 parts of sodium sulfate, 5-8 parts of aluminum chloride, 3-5 parts of potassium carbonate, 8-10 parts of sodium bentonite, 5-8 parts of NaBF4 and 5-8 parts of NaF. The refining agent is used for treating to obtain high-quality aluminum alloy smelted liquid; the aluminum alloy smelted liquid is used for casting production and the finished product rate is obviously improved; particularly, the porosity in a casting is reduced by 1-2 degrees and is effectively controlled; air pores are not generated in the surface of the casting and included oxides are obviously reduced; and an oxide inclusion is about 2-grade and the mechanical property of the casting is obviously improved.
Description
Technical field
The present invention relates to a kind of melting field of high-strength aluminum alloy section, belong to the aluminum alloy materials processing technique field.
Background technology
Need to use insulating covering agent, slagging agent, slag-cleaning agent, refining agent etc. in the aluminium alloy smelting process, aluminium alloy adds refining agent when temperature reaches 720 degree left and right, the refining agent used in traditional aluminium alloy manufacturing processed, can cause electroconductibility, thermal conductivity, the erosion resistance of finished product not strong, and the degree of porosity in the alloy-steel casting of producing is higher, how can produce pore at cast(ing) surface, the ratio of oxidation foreign material is also higher, has affected the performance of alloy-steel casting.
Summary of the invention
The objective of the invention is for the deficiencies in the prior art, a kind of refining agent for smelting preparation method of the aluminium alloy extrusions doped with the stalk ashes is provided, improve the over-all properties of aluminium alloy extrusions.
The technical solution used in the present invention is as follows:
A kind of refining agent for smelting preparation method of the aluminium alloy extrusions doped with the stalk ashes includes following operation steps: made by following raw materials in part by weight: lithium chloride 6-8, stalk ashes 4-6, magnesium chloride 6-8, Calcium Fluoride (Fluorspan) 3-5, SODIUMNITRATE 3-5, wollastonite powder 5-8, Sodium Silicofluoride 8-10, sodium sulfate 3-5, aluminum chloride 5-8, salt of wormwood 3-5, sodium bentonite 8-10, NaBF
45-8, NaF 5-8, the stalk ashes of above-mentioned weight part successively are placed in to 18-22% sulfuric acid successively, in the 17-24% sodium hydroxide solution, stir 15-16h, then the stalk ashes that leach from the soda acid immersion liquid, extremely neutral with deionized water rinsing, after finally filtering be wrapped in magnesium chloride after wollastonite powder evenly mixes and form particulate matter outward, particulate matter is heated to 350-360 ℃, insulation 1-2 hour, stove is chilled to 200 ℃, be incubated 2 hours, reheat to 350-360 ℃, be incubated 1 hour, be cooled to 150 ℃ with 50 ℃/hs, again with 20 ℃/hs, be cooled to normal temperature, make the magnesium chloride enwrapped granule through pulverizing, the granularity of magnesium chloride enwrapped granule is 2-3mm,
Described refining agent preparation method is as follows:
A, the sodium bentonite of above-mentioned weight part is soaked to 3-4 hour with 12-15% sulfuric acid, deionized water wash, then soak 3-4 hour with the 10-12% sodium hydroxide solution, more extremely neutral with deionized water wash, then calcining 2-3 hour under 500-530 ℃, be ground into nanometer powder;
B, the lithium chloride of above-mentioned weight part, sodium sulfate, salt of wormwood, SODIUMNITRATE are added to the water, the sodium laurylsulfate, the peregal of 1-2%, the 3-5% aluminum oxide that add again sodium bentonite weight 2-3%, high speed 4800-5500 rev/min of stirring, obtain dispersion liquid, and the dispersion liquid dewatered drying is pulverized;
C, by the Calcium Fluoride (Fluorspan) of above-mentioned weight part, aluminum chloride, Sodium Silicofluoride, NaBF
4, after the NaF heating and melting, cooling, pulverize;
D, the material that step a, b, c are obtained obtain particulate mixtures after adding magnesium chloride enwrapped granule, mixing to stir evenly and are refining agent.
Described refining agent is to be made by following raw materials in part by weight: lithium chloride 7, stalk ashes 5, magnesium chloride 7, Calcium Fluoride (Fluorspan) 4, SODIUMNITRATE 4, wollastonite powder 7, Sodium Silicofluoride 9, sodium sulfate 4, aluminum chloride 6, salt of wormwood 4, sodium bentonite 9, NaBF
46, NaF 7.
The present invention processes through above-mentioned refining agent, obtain high-quality molten aluminium alloy, such molten aluminium alloy is for Foundry Production, and the degree of porosity obviously improved in yield rate, particularly foundry goods reduces the 1-2 degree, electric conductivity is obviously improved, be controlled effectively, can not produce pore at cast(ing) surface, trapped oxide also obviously reduces, oxide inclusion is 2 grades of left and right, and the mechanical property of foundry goods obviously improves.Increase intensity and the hardness of aluminium alloy, be conducive to improve the over-all properties of aluminium alloy extrusions; The steps such as anneal, quench treatment, alignment processing, increased the homogeneity of interior tissue of aluminum and the refinement of crystal grain, greatly improved quality and the processing characteristics of aluminium alloy extrusions; Aluminium alloy section surface is carried out to chromate treating, improved the resistance to corrosion of aluminium alloy section surface oxide film and the bonding force of aluminium alloy extrusions and coating.
Embodiment
Below in conjunction with executing example, the invention will be further described, but be not limited to the following example.
A kind of refining agent for smelting preparation method of the aluminium alloy extrusions doped with the stalk ashes includes following operation steps: made by following raw materials in part by weight: lithium chloride 7, stalk ashes 5, magnesium chloride 7, Calcium Fluoride (Fluorspan) 4, SODIUMNITRATE 4, wollastonite powder 7, Sodium Silicofluoride 9, sodium sulfate 4, aluminum chloride 6, salt of wormwood 4, sodium bentonite 9, NaBF
46, NaF 7, the stalk ashes of above-mentioned weight part successively are placed in to 18-22% sulfuric acid successively, in the 17-24% sodium hydroxide solution, stir 15-16h, then the stalk ashes that leach from the soda acid immersion liquid, extremely neutral with deionized water rinsing, after finally filtering be wrapped in magnesium chloride after wollastonite powder evenly mixes and form particulate matter outward, particulate matter is heated to 350-360 ℃, insulation 1-2 hour, stove is chilled to 200 ℃, be incubated 2 hours, reheat to 350-360 ℃, be incubated 1 hour, be cooled to 150 ℃ with 50 ℃/hs, again with 20 ℃/hs, be cooled to normal temperature, make the magnesium chloride enwrapped granule through pulverizing, the granularity of magnesium chloride enwrapped granule is 2-3mm,
Described refining agent preparation method is as follows:
A, the sodium bentonite of above-mentioned weight part is soaked to 3-4 hour with 12-15% sulfuric acid, deionized water wash, then soak 3-4 hour with the 10-12% sodium hydroxide solution, more extremely neutral with deionized water wash, then calcining 2-3 hour under 500-530 ℃, be ground into nanometer powder;
B, the lithium chloride of above-mentioned weight part, sodium sulfate, salt of wormwood, SODIUMNITRATE are added to the water, the sodium laurylsulfate, the peregal of 1-2%, the 3-5% aluminum oxide that add again sodium bentonite weight 2-3%, high speed 4800-5500 rev/min of stirring, obtain dispersion liquid, and the dispersion liquid dewatered drying is pulverized;
C, by the Calcium Fluoride (Fluorspan) of above-mentioned weight part, aluminum chloride, Sodium Silicofluoride, NaBF
4, after the NaF heating and melting, cooling, pulverize;
D, the material that step a, b, c are obtained obtain particulate mixtures after adding magnesium chloride enwrapped granule, mixing to stir evenly and are refining agent.
Through above-mentioned refining treatment, obtain high-quality molten aluminium alloy, refining temperature is 710-760 ℃, add-on is 0.5-1.5 kg/tonne, and such molten aluminium alloy, for Foundry Production, obviously improves yield rate, particularly the degree of porosity in foundry goods reduces the 1-2 degree, be controlled effectively, trapped oxide also obviously reduces, and oxide inclusion is 2 grades of left and right.In melt, H content is generally 0.11-0.17ml/100g aluminium, and the mechanical property of foundry goods obviously improves.
Claims (2)
1. the preparation method of the refining agent for smelting doped with the aluminium alloy extrusions of stalk ashes, it is characterized in that, include following operation steps: made by following raw materials in part by weight: lithium chloride 6-8, stalk ashes 4-6, magnesium chloride 6-8, Calcium Fluoride (Fluorspan) 3-5, SODIUMNITRATE 3-5, wollastonite powder 5-8, Sodium Silicofluoride 8-10, sodium sulfate 3-5, aluminum chloride 5-8, salt of wormwood 3-5, sodium bentonite 8-10, NaBF
45-8, NaF 5-8, the stalk ashes of above-mentioned weight part successively are placed in to 18-22% sulfuric acid successively, in the 17-24% sodium hydroxide solution, stir 15-16h, then the stalk ashes that leach from the soda acid immersion liquid, extremely neutral with deionized water rinsing, after finally filtering be wrapped in magnesium chloride after wollastonite powder evenly mixes and form particulate matter outward, particulate matter is heated to 350-360 ℃, insulation 1-2 hour, stove is chilled to 200 ℃, be incubated 2 hours, reheat to 350-360 ℃, be incubated 1 hour, be cooled to 150 ℃ with 50 ℃/hs, again with 20 ℃/hs, be cooled to normal temperature, make the magnesium chloride enwrapped granule through pulverizing, the granularity of magnesium chloride enwrapped granule is 2-3mm,
Described refining agent preparation method is as follows:
A, the sodium bentonite of above-mentioned weight part is soaked to 3-4 hour with 12-15% sulfuric acid, deionized water wash, then soak 3-4 hour with the 10-12% sodium hydroxide solution, more extremely neutral with deionized water wash, then calcining 2-3 hour under 500-530 ℃, be ground into nanometer powder;
B, the lithium chloride of above-mentioned weight part, sodium sulfate, salt of wormwood, SODIUMNITRATE are added to the water, the sodium laurylsulfate, the peregal of 1-2%, the 3-5% aluminum oxide that add again sodium bentonite weight 2-3%, high speed 4800-5500 rev/min of stirring, obtain dispersion liquid, and the dispersion liquid dewatered drying is pulverized;
C, by the Calcium Fluoride (Fluorspan) of above-mentioned weight part, aluminum chloride, Sodium Silicofluoride, NaBF
4, after the NaF heating and melting, cooling, pulverize;
D, the material that step a, b, c are obtained obtain particulate mixtures after adding magnesium chloride enwrapped granule, mixing to stir evenly and are refining agent.
2. the refining agent for smelting preparation method of the aluminium alloy extrusions doped with the stalk ashes according to claim 1, it is characterized in that, described refining agent is to be made by following raw materials in part by weight: lithium chloride 7, stalk ashes 5, magnesium chloride 7, Calcium Fluoride (Fluorspan) 4, SODIUMNITRATE 4, wollastonite powder 7, Sodium Silicofluoride 9, sodium sulfate 4, aluminum chloride 6, salt of wormwood 4, sodium bentonite 9, NaBF
46, NaF 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210515405XA CN103122419A (en) | 2012-12-05 | 2012-12-05 | Method for preparing refining agent doped with straw ash and used for smelting aluminum alloy section |
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| CN201210515405XA CN103122419A (en) | 2012-12-05 | 2012-12-05 | Method for preparing refining agent doped with straw ash and used for smelting aluminum alloy section |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911421A (en) * | 2014-03-15 | 2015-09-16 | 紫旭盛业（昆山）金属科技有限公司 | Die aluminum alloy |
| CN105316507A (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 La, Er and Zr |
| CN107574327A (en) * | 2017-10-24 | 2018-01-12 | 徐州轩辕铝业有限公司 | A kind of refining agent for smelting of aluminium alloy extrusions and preparation method thereof |
| CN107893163A (en) * | 2017-12-18 | 2018-04-10 | 安徽玉成光华铝业有限公司 | It is a kind of to utilize the method for reclaiming aluminium scrap powder processing and fabricating aluminium ingot |
| CN108588463A (en) * | 2018-05-03 | 2018-09-28 | 中山铁王流体控制设备有限公司 | A kind of Monel casting alloy composite refining alterant |
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|---|---|---|---|---|
| GB1413848A (en) * | 1972-05-17 | 1975-11-12 | Foseco Int | Grain refining compositions |
| JPH10317083A (en) * | 1997-05-13 | 1998-12-02 | Kobe Steel Ltd | Grain refiner for aluminum alloy |
| 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 |
| CN101948959A (en) * | 2010-09-30 | 2011-01-19 | 昆明理工大学 | Slag-forming agent for fusion casting of environment-friendly zinc and zinc alloy |
| CN102226239A (en) * | 2011-06-14 | 2011-10-26 | 华南理工大学 | Refining flux used for purifying and processing aluminum or aluminum alloy melt, and its preparation method |
-
2012
- 2012-12-05 CN CN201210515405XA patent/CN103122419A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| GB1413848A (en) * | 1972-05-17 | 1975-11-12 | Foseco Int | Grain refining compositions |
| JPH10317083A (en) * | 1997-05-13 | 1998-12-02 | Kobe Steel Ltd | Grain refiner for aluminum alloy |
| 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 |
| CN101948959A (en) * | 2010-09-30 | 2011-01-19 | 昆明理工大学 | Slag-forming agent for fusion casting of environment-friendly zinc and zinc alloy |
| CN102226239A (en) * | 2011-06-14 | 2011-10-26 | 华南理工大学 | Refining flux used for purifying and processing aluminum or aluminum alloy melt, and its preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 王致明等: "铝合金用环保铸造材料及技术", 《金属加工》, no. 19, 31 December 2011 (2011-12-31), pages 13 - 16 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911421A (en) * | 2014-03-15 | 2015-09-16 | 紫旭盛业（昆山）金属科技有限公司 | Die aluminum alloy |
| CN105316507A (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 La, Er and Zr |
| CN105316507B (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 zirconium of erbium containing lanthanum |
| CN107574327A (en) * | 2017-10-24 | 2018-01-12 | 徐州轩辕铝业有限公司 | A kind of refining agent for smelting of aluminium alloy extrusions and preparation method thereof |
| CN107893163A (en) * | 2017-12-18 | 2018-04-10 | 安徽玉成光华铝业有限公司 | It is a kind of to utilize the method for reclaiming aluminium scrap powder processing and fabricating aluminium ingot |
| CN108588463A (en) * | 2018-05-03 | 2018-09-28 | 中山铁王流体控制设备有限公司 | A kind of Monel casting alloy composite refining alterant |
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Application publication date: 20130529 |