Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for removing iron from recycled aluminum

A technology of recycled aluminum and silicon-aluminum, which is applied in the field of purification of recycled aluminum melts, can solve the problems of low absorption rate, failure to mention the mechanical properties of recycled aluminum, and unfavorable utilization of resources, etc., to achieve reduced iron content and good dispersion , the effect of grain refinement

Active Publication Date: 2016-01-27
GUANGDONG INST OF NEW MATERIALS
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The absorption rate of manganese chloride added in CN102304649A is lower than 60%, which is not conducive to the effective utilization of resources
In addition, none of the above patents mentioned the mechanical properties of recycled aluminum after iron removal, especially the plasticity index

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for removing iron from recycled aluminum
  • A method for removing iron from recycled aluminum
  • A method for removing iron from recycled aluminum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 50% of the Al-5%B master alloy and 50% of the Al-30%Mn master alloy according to 1.5% of the mass of regenerated silicon-aluminum aluminum, and preheat at 200°C for 60 minutes; after heating the regenerated silicon-aluminum aluminum to 400°C, Keep warm for 15 minutes, then raise the temperature to 700°C; after the molten aluminum in the crucible is completely melted, add the intermediate alloy into the molten aluminum, stir the melt slowly with a titanium stirring rod, and let it stand for 1 hour after the intermediate alloy is melted; , the mold is fixed on a vibrating table with a vibration frequency of 10 Hz and an amplitude of 10 cm, and the entire casting and cooling are completed under mechanical vibration.

[0021] After the iron removal treatment, no dendrites were found in the metallographic structure of the casting, and the iron-rich phase mainly took the form of polygon and network, see figure 1 and figure 2 . The atomic ratio of Mn / Fe in the polygon...

Embodiment 2

[0023] Weigh 60% Al-5%B master alloy and 40% Al-60%Mn master alloy according to 1.0% of silicon-aluminum regenerated aluminum mass, preheat at 180°C for 45 minutes; heat silicon-aluminum regenerated aluminum to 400°C, Keep warm for 25 minutes, then raise the temperature to 700°C; after the molten aluminum in the crucible is completely melted, add the intermediate alloy into the molten aluminum, stir the melt slowly with a titanium stirring rod, and let it stand for 1.5 hours after the intermediate alloy is melted; , Fix the mold on a vibrating table with a vibration frequency of 20 Hz and an amplitude of 10 cm. The entire casting and cooling are completed under mechanical vibration.

Embodiment 3

[0025] Weigh 70% Al-3%B master alloy and 30% Al-70%Mn master alloy according to 0.5% of silicon-aluminum regenerated aluminum mass, preheat at 220°C for 20 minutes; heat silicon-aluminum regenerated aluminum to 400°C, Keep warm for 25 minutes, then raise the temperature to 700°C; after the molten aluminum in the crucible is completely melted, add the intermediate alloy into the molten aluminum, stir the melt slowly with a titanium stirring rod, and let it stand for 0.5 hours after the intermediate alloy is melted; when casting , Fix the mold on a vibrating table with a vibration frequency of 30 Hz and an amplitude of 5 cm. The entire casting and cooling are completed under mechanical vibration.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
densityaaaaaaaaaa
elongationaaaaaaaaaa
Login to View More

Abstract

The invention relates to a deironing method for secondary aluminum. The deironing method is characterized by comprising the following steps of (1) preheating 50-70% Al-B intermediate alloy and 30-50% Al-Mn intermediate alloy for 30-60 minutes at 150-250 DEG C, wherein the intermediate alloys account for 0.5-2% of mass of aluminum-silicon secondary aluminum; (2) maintaining the temperature for 10-30 minutes after heating the aluminum-silicon secondary aluminum to 400 DEG C; and raising the temperature to 700 DEG C; (3) after the aluminum-silicon secondary aluminum is melted, adding the intermediate alloys, slowly stirring, and standing for 0.5-4 hours after the intermediate alloys are melted; (4) dusting casting, fixing a mold on a vibration platform, and casting and cooling under the condition of mechanical vibration, wherein the frequency of the vibration platform is 10-40 Hz and the amplitude of the vibration platform is 5-10 cm. The deironing method is used for removing iron, refining grains and improving the shape of an iron-rich phase, can reduce the iron content of the secondary aluminum and improve the extension strength and rate of the secondary aluminum and is suitable for the aluminum-silicon secondary aluminum.

Description

technical field [0001] The invention relates to a method for purifying recycled aluminum melt, in particular to a method for removing iron from recycled aluminum. Background technique [0002] Aluminum alloy is widely used in various industries of the national economy because of its excellent performance. Among the metal materials used by humans, the consumption of aluminum ranks second, second only to steel. my country is the world's largest aluminum producer, with an output of 21 million tons in 2012, accounting for 40% of the world's total. However, my country's bauxite resources are not rich, and the reserves account for about 3% of the world's reserves, which is only enough for 20 years of mining. The contradiction between the shortage of aluminum resources and the increasing production of primary aluminum has become increasingly prominent. [0003] Recycled aluminum is an aluminum alloy or aluminum metal obtained by re-melting and refining waste aluminum and aluminu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C1/06C22C21/02B22D27/08
Inventor 郑开宏宋东福谭喜平徐静王顺成
Owner GUANGDONG INST OF NEW MATERIALS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com