Method for directly preparing aluminum alloy refiner through waste aluminum recycle

A refiner, aluminum alloy technology, applied in the direction of improving process efficiency, can solve the problems of refinement effect decline, particle aggregation, etc., to achieve the effect of reasonable equipment structure, reduction of production and emission, and reduction of air pollution

Active Publication Date: 2020-02-25
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, Al-Ti-B is the most effective grain refiner, but there is still a decline in the refinement effect, TiB 2 Problems such as particle agglomeration still need to develop new high-performance grain refiners

Method used

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  • Method for directly preparing aluminum alloy refiner through waste aluminum recycle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The method for directly preparing the aluminum alloy refiner from waste aluminum recycling in this embodiment comprises the following steps:

[0037] 1) Aluminum scrap pretreatment: Electromagnetic iron removal, acetone immersion degreasing and water washing are performed on the waste aluminum, and then the modified liquid is sprayed, and the waste aluminum is crushed into aluminum chips with a particle size of 2-8cm by a crusher; after the above crushing Add the aluminum chips into the paint removal solution, and place them in 40°C for full soaking treatment for 30 minutes; immerse the above-mentioned aluminum chips after depainting in the cleaning solution and ultrasonically clean them for 40 minutes to remove the oxide film on the surface of the aluminum chips; put the above-mentioned aluminum chips after removing the oxide film Use a rotary dryer to dry, the drying rotation speed is 2r / min, the hot air speed is 1m / s, the hot air temperature is 60°C, and the drying ti...

Embodiment 2

[0046] The method for directly preparing the aluminum alloy refiner from waste aluminum recycling in this embodiment comprises the following steps:

[0047] 1) Aluminum scrap pretreatment: Electromagnetic iron removal, acetone immersion degreasing and water washing are performed on the waste aluminum, and then the modified liquid is sprayed, and the waste aluminum is crushed into aluminum chips with a particle size of 2-8cm by a crusher; after the above crushing Add the aluminum chips into the paint removal solution, and place them in 50°C for full immersion treatment for 40 minutes; immerse the above-mentioned aluminum chips after depainting in the cleaning solution and ultrasonically clean them for 50 minutes to remove the oxide film on the surface of the aluminum chips; put the above-mentioned aluminum chips after removing the oxide film Use a rotary dryer to dry, the drying rotation speed is 4r / min, the hot air speed is 1.5m / s, the hot air temperature is 80°C, and the dryin...

Embodiment 3

[0055] The method for directly preparing the aluminum alloy refiner from waste aluminum recycling in this embodiment comprises the following steps:

[0056] 1) Aluminum scrap pretreatment: Electromagnetic iron removal, acetone immersion degreasing and water washing are performed on the waste aluminum, and then the modified liquid is sprayed, and the waste aluminum is crushed into aluminum chips with a particle size of 2-8cm by a crusher; after the above crushing Add the aluminum chips into the paint removal solution, and place them in 60°C for 50 minutes of full immersion treatment; immerse the above-mentioned aluminum chips after depainting in the cleaning solution and ultrasonically clean them for 60 minutes to remove the oxide film on the surface of the aluminum chips; put the above-mentioned aluminum chips after removing the oxide film Use a rotary dryer to dry, the drying rotation speed is 6r / min, the hot air speed is 2m / s, the hot air temperature is 100°C, and the drying ...

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Abstract

The invention relates to a method for directly preparing an aluminum alloy refiner through waste aluminum recycle, and belongs to the technical field of refiners. The method comprises the following steps that waste aluminum is pretreated; pretreated aluminum scraps are remelted, an iron remover is added, heat preservation is carried out, salt mixture is added, stirring is carried out, then a covering agent is added, standing is carried out in an argon environment, then an Al-0.4V alloy and an Al-0.4Zr alloy are added, heat preservation is continued, then slag removing is carried out to obtainaluminum melt; and finally, the obtained aluminum melt is subjected to semi-solid-state variable-diameter extrusion molding to prepare an Al-Ti-B-Zr-C-V alloy refiner wire. The method effectively reduces the production cost of the grain refiner, and realizes the effective recycle of the waste aluminum resources; and the method has the advantages that the preparation process is simple, and can achieve industrial production.

Description

technical field [0001] The invention belongs to the technical field of recycling and reusing waste aluminum to prepare refining agents, and in particular relates to a method for directly preparing aluminum alloy refining agents by recycling waste aluminum. Background technique [0002] Due to a series of excellent properties such as low density, high strength and corrosion resistance, aluminum alloy has become the second largest metal material in the world. With the shortage of primary aluminum production and various aluminum products reaching the end of life, people pay more and more attention to the recycling of waste aluminum alloys. If the waste aluminum is recycled to produce high value-added products, it can effectively reduce production costs, realize the reuse of waste resources, and make a great contribution to alleviating the increasing shortage of bauxite resources and sustainable development of economy, environment and energy. [0003] With the development of ae...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C1/06C22B7/00C22B21/00
CPCC22C1/03C22C1/026C22C1/06C22B7/001C22B21/0069Y02P10/20
Inventor 赵占勇段瑞斌张立正白培康张文达刘斌王建宏李玉新
Owner ZHONGBEI UNIV
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