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Settling separation method for Fe in aluminum alloy waste melt

A sedimentation separation, aluminum alloy technology, applied in the field of aluminum alloy melt purification, can solve problems such as low effect, achieve the effect of enhancing separability, improving separation efficiency, and solving low sedimentation efficiency

Active Publication Date: 2020-04-17
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a naturally occurring process in the melt, gravity settling can naturally settle heavy elements in the aluminum alloy melt, such as Fe, V, Ti, etc., to separate them from the melt, but for Fe elements, in the melt The effect of gravity sedimentation separation in medium is low, and it usually takes 3 to 5 hours for obvious sedimentation process to occur

Method used

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  • Settling separation method for Fe in aluminum alloy waste melt
  • Settling separation method for Fe in aluminum alloy waste melt
  • Settling separation method for Fe in aluminum alloy waste melt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Taking the aluminum alloy waste whose mass ratio of Fe impurity elements is 0.2% as an example, the aforementioned sedimentation separation method is carried out, wherein the specific mass percentages of the alloy are: Si 7%, Mg 0.6%, Cu≤0.3; Fe 0.2%; Zn ≤0.3%; Ti≤0.2%; the rest is Al. The sedimentation separation method comprises the following steps:

[0037] S1. Sampling and measuring the content of Fe element in the aluminum alloy scrap, melting after recovery, and controlling the temperature of the melt at 700°C;

[0038] S2. According to the content of Fe element in the aluminum alloy scrap, add Mn, Cr and V elements to the melt according to a certain mass ratio of Mn:Fe, Cr:Fe, V:Fe; the mass of the added Mn element and Fe element The ratio is 1, the mass ratio of added Cr element to Fe element is 0.5, and the mass ratio of added V element to Fe element is 0.2;

[0039] S3. After all the Mn, Cr and V elements to be added are melted, keep the alloy melt at 780° C...

Embodiment 2

[0051] Taking the aluminum alloy waste whose mass ratio of Fe impurity elements is 0.5% as an example, the aforementioned sedimentation separation method is carried out, wherein the specific composition mass percentages of the alloy are: Si 9%, Mg≤0.1%, Cu≤0.3; Fe 0.5%; Zn≤0.3%; Ti≤0.2%; the rest is Al. The sedimentation separation method comprises the following steps:

[0052] S1. Take a sample to measure the content of Fe in the aluminum alloy scrap, and melt it after recovery, and control the temperature of the melt at 750°C;

[0053] S2. According to the content of Fe element in the aluminum alloy scrap, add Mn, Cr and V elements to the melt according to a certain mass ratio of Mn:Fe, Cr:Fe, V:Fe; the mass of the added Mn element and Fe element The ratio is 2, the mass ratio of added Cr element to Fe element is 2, and the mass ratio of added V element to Fe element is 1;

[0054] S3. After all the Mn, Cr and V elements to be added are melted, keep the alloy melt at 810° ...

Embodiment 3

[0066] Taking the aluminum alloy waste whose mass ratio of Fe impurity elements is 1% as an example, the aforementioned sedimentation separation method is carried out, wherein the specific mass percentages of the alloy are: Si 11%, Mg 0.3%, Cu≤0.3, Fe 1%, Zn ≤0.3%, Ti≤0.2%, and the rest is Al. The sedimentation separation method comprises the following steps:

[0067] S1. Take a sample to measure the content of Fe in the aluminum alloy scrap, and melt it after recovery, and control the temperature of the melt at 820°C;

[0068] S2. According to the content of Fe element in the aluminum alloy scrap, add Mn, Cr and V elements to the melt according to a certain mass ratio of Mn:Fe, Cr:Fe, V:Fe; the mass of the added Mn element and Fe element The ratio is 5, the mass ratio of the added Cr element to the Fe element is 4, and the mass ratio of the added V element to the Fe element is 4;

[0069] S3. After all the Mn, Cr and V elements to be added are melted, keep the alloy melt at...

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Abstract

The invention discloses a settling separation method for Fe in aluminum alloy waste melt. After aluminum alloy waste is smelted in a resistance furnace, Mn, Cr and V are added into the aluminum alloymelt according to a certain mass ratio of the Fe, the Mn, the Cr and the V, after melting is completed, the melt is slowly cooled within a certain temperature interval, then the melt is stirred and blown, and finally after the melt stands still for a certain time at a certain temperature, the settling process of the Fe in the aluminum alloy melt is completed. The settling speed of the Fe in the aluminum alloy melt can be effectively increased, and the separation efficiency of the Fe in the melt is improved.

Description

technical field [0001] The invention relates to the field of purification of aluminum alloy melts, in particular to a method for sedimentation and separation of Fe elements in aluminum alloy waste. Background technique [0002] At present, secondary aluminum alloy (aluminum alloy waste) has become an indispensable part of the industrial production of aluminum alloy. The secondary aluminum alloy can significantly reduce the industrial production cost of aluminum alloy, and has great application potential. However, there are still many problems in the industrial production of recycled aluminum. One of the most important problems is that it is difficult to effectively control the impurity components, which leads to the downgrading of recycled aluminum alloys and severely limits the recycling of aluminum alloy waste. [0003] Among them, Fe element is the most common impurity element in aluminum alloy, and the β-Al formed when the content in aluminum alloy is high 5 The brittle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C21/02C22B9/05
CPCC22B9/05C22C1/026C22C1/03C22C21/02
Inventor 王东涛长海博文张孝足沈晓东李新中
Owner SUZHOU UNIV
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