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Secondary aluminium smelting technology and processing technology

A recycled aluminum and process technology, applied in the field of aluminum alloys, can solve the problems of impurity removal, complex purification process, and difficult control of components, and achieve the effects of improving mechanical properties and corrosion resistance, reducing adverse effects, and increasing removal rates

Inactive Publication Date: 2017-05-31
重庆顺博铝合金股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when waste cans are used to prepare aluminum alloys for automobile bodies, the composition is not easy to control, and the impurity removal and purification processes during smelting are relatively complicated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The discarded pop cans are broken into 1cm-long strips of aluminum strips, and then passed through a wind separator for the first separation under the condition of a wind speed of 4m / s to separate light impurities. Then, through a magnetic separator, the second separation is carried out under the condition of a magnetic field strength of 0.1T, and the iron filings are separated. Next, put the aluminum strip into 15% acetic acid solution for immersion for 3 minutes, then heat the aluminum strip to 80° C. and perform mechanical kneading.

[0043] Add the kneaded aluminum strip to the first mixture of benzyl alcohol, acetic acid and turpentine with a volume ratio of 3:1:1 while it is hot, and stir for 15 minutes. The mixture was stirred for 10 minutes, ultrasonically oscillated in deionized water for 30 minutes, and then dried at 110°C for 20 minutes.

[0044] Carry out batching then, carry out batching according to the weight ratio that composition accounts for total cha...

Embodiment 2

[0048] The discarded pop cans are broken into 5cm-long strips of aluminum strips, and then passed through a wind separator for the first separation under the condition of a wind speed of 6m / s to separate light impurities. Then, through a magnetic separator, the second separation is carried out under the condition of a magnetic field strength of 0.3T, and the iron filings are separated. Next, put the aluminum strip into 25% acetic acid solution for immersion for 1 min, then heat the aluminum strip to 120° C. and perform mechanical kneading.

[0049] Add the kneaded aluminum strip to the first mixture of benzyl alcohol, acetic acid and turpentine with a volume ratio of 8:4:3 while it is hot, and stir for 8 minutes, and then put it into the second mixture of absolute ethanol and ethyl acetate with a volume ratio of 10:3. The mixture was stirred for 5 minutes, ultrasonically oscillated in deionized water for 60 minutes, and then dried at 125°C for 20 minutes.

[0050] Then carry ...

Embodiment 3

[0054] The discarded pop cans are broken into 4cm-long strips of aluminum strips, and then passed through a wind separator for the first separation under the condition of a wind speed of 5m / s to separate light impurities. Then, through a magnetic separator, the second separation is carried out under the condition of a magnetic field strength of 0.2T, and the iron filings are separated. Next, put the aluminum strip into 20% acetic acid solution for immersion for 2 minutes, then heat the aluminum strip to 100° C. and perform mechanical kneading.

[0055] Add the kneaded aluminum strip to the first mixture of benzyl alcohol, acetic acid and turpentine with a volume ratio of 6:3:2 while it is hot, and stir for 10 minutes, then put it into the second mixture of absolute ethanol and ethyl acetate with a volume ratio of 5:2. The mixture was stirred for 8 minutes, ultrasonically oscillated in deionized water for 120 minutes, and then dried at 115°C for 18 minutes.

[0056]Carry out b...

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Abstract

The invention provides a secondary aluminium smelting technology and processing technology and relates to the technical field of aluminium alloys. The secondary aluminium smelting technology comprises the steps that a pretreated aluminium strip and an industrial pure aluminium ingot are melted at the temperature of 680-760 DEG C; then the melted aluminium liquid with industrial pure silicon, industrial pure copper, industrial pure iron, pure metals and rare-earth metals are added in a smelting furnace, nanometer carbonates are added, meanwhile inert gas is injected from the bottom of the smelting furnace, and the temperature is raised to 1680-1800 DEG C till complete melting is achieved and kept for 40-60 min; and then filtering is conducted through a foam ceramic filtering plate. The technology is simple, the impurity removing and purifying effects in the smelting progress are good, and the technology is suitable for preparing an automobile body aluminium alloy. The secondary aluminium processing technology including the secondary aluminium smelting technology is easy to operate and environmentally friendly, and the prepared finished product is good in quality.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a secondary aluminum smelting process and a secondary aluminum treatment process. Background technique [0002] Aluminum alloy is a general term for alloys based on aluminum. The main alloying elements are copper, silicon, magnesium, zinc or manganese, and the secondary alloying elements are nickel, iron, titanium, chromium or lithium. Aluminum alloy has good processability, especially hypoeutectic silicon-aluminum alloy, which not only has good processability, but also has light specific gravity, beautiful surface and corrosion resistance, good casting performance, and good comprehensive mechanical properties of products, which can be used to make various forms of parts. Widely used in many fields. As the main material of auto parts, aluminum alloy is widely used in the manufacture of doors, windows and invisible parts in the body structure at home and abroad. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C21/02
CPCC22C1/026C22C1/03C22C21/02
Inventor 王增潮李新生罗乐
Owner 重庆顺博铝合金股份有限公司
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