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

Method for increasing recycling rate of waste aluminum cans

A technology of recovery rate and aluminum cans, applied in the direction of improving process efficiency, etc., can solve the problems of low recycling rate of waste aluminum cans, poor refinement effect, high impurity content, etc., to achieve sustainable development and reduce energy consumption The effect of excellent consumption and comprehensive mechanical properties

Inactive Publication Date: 2020-11-06
安徽百圣鑫金属科技有限公司
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although there has been a history of recycling waste aluminum cans in my country, due to the limitations of pretreatment technology, smelting technology, refining technology and other technical levels, the recycling rate of waste aluminum cans is not high, and the content of impurities is high, and the refinement effect is not good. , further processed into aluminum recycled products, the performance is greatly reduced

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for increasing the recycling rate of waste aluminum cans, comprising the following steps:

[0017] Firstly, the waste aluminum cans are pretreated, including iron removal, cleaning, drying, paint removal, and then pressed into cakes.

[0018] The paint removal method is as follows: using high-temperature carbonization, heating the waste aluminum sheets to 510° C., stirring rapidly, treating for 20 minutes, and sieving out the fallen carbon powder particles.

[0019] After pretreatment, send the compressed aluminum cake into the melting furnace. During the melting, after the center temperature reaches 720°C, add the prepared impurity removal flux, the addition amount is 0.70% of the mass of the melting liquid, and nitrogen and argon are introduced. The gas flow rate is 450 cubic centimeters per minute, and the ventilation time is 25 minutes. The volume ratio of nitrogen to argon is 1.2:0.7. The amount is 0.15% of the mass of the smelting liquid, let it stand fo...

Embodiment 2

[0025] A method for increasing the recycling rate of waste aluminum cans, comprising the following steps:

[0026] Firstly, the waste aluminum cans are pretreated, including iron removal, cleaning, drying, paint removal, and then pressed into cakes.

[0027] The paint removal method is as follows: adopt high-temperature carbonization, heat the waste aluminum sheet to 515° C., carry out rapid stirring, process for 22 minutes, and sieve out the falling carbon powder particles.

[0028] After pretreatment, the compressed aluminum cake is sent into the melting furnace. During the melting, after the center temperature reaches 725°C, the prepared impurity removal flux is added in an amount of 0.71% of the mass of the melting liquid, and nitrogen and argon are introduced. The mixed gas, the gas flow rate is 500 cubic centimeters per minute, the ventilation time is 28 minutes, and the volume ratio of nitrogen to argon is 1.4:0.8. After it is completely melted, continue to heat up unti...

Embodiment 3

[0034] A method for increasing the recycling rate of waste aluminum cans, comprising the following steps:

[0035] Firstly, the waste aluminum cans are pretreated, including iron removal, cleaning, drying, paint removal, and then pressed into cakes.

[0036] The paint removal method is as follows: adopt high-temperature carbonization method, heat the waste aluminum sheet to 520° C., carry out rapid stirring, process for 25 minutes, and sieve out the falling carbon powder particles.

[0037] After pretreatment, the compressed aluminum cake is sent into the melting furnace. During the melting, after the central temperature reaches 730°C, the prepared impurity removal flux is added in an amount of 0.73% of the mass of the melting liquid, and nitrogen and argon are introduced. The mixed gas, the gas flow rate is 550 cubic centimeters per minute, the ventilation time is 30 minutes, and the volume ratio of nitrogen and argon is 1.6:0.9. The amount is 0.17% of the mass of the smelti...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of waste aluminum recycling, and discloses a method for increasing the recycling rate of waste aluminum cans. The method comprises the steps that firstly the waste aluminum cans are pre-processed, the pre-procession comprises the steps of deironing, cleaning, drying, removing paint, and then pressing the cans into cakes; the cakes of pressed aluminum cans are send into a smelting furnace, a prepared impurity removing solution is added in the smelting process, the additive amount is 0.70%-0.73% of the quality of smelted liquid, the impurity removingsolution can remove most impurities and gases in the process of aluminum cakes smelting, and is beneficial to the separation of slag and aluminum and improve the purity of recovered aluminum. The recovery rate of aluminum in the waste aluminum cans reaches more than 90.5%, and the impurity content is lower than 0.07%. Through the research of waste aluminum regeneration technology, the method realizes the practical application, is conducive to the sustainable development of aluminum resources, reduces the energy consumption, and improves the economic benefits.

Description

technical field [0001] The invention belongs to the technical field of waste aluminum recycling, and in particular relates to a method for improving the recycling rate of waste aluminum cans. Background technique [0002] As a renewable resource, waste aluminum cans are of great significance to the improvement of economic and social benefits. With the development of the economy, the status and role of aluminum and its alloys in the national economy are second only to steel, and their usage and scope are expanding day by day. Primary aluminum can no longer meet the needs of the society. On the one hand, bauxite is increasingly depleted, and on the other hand, aluminum smelting consumes a lot of energy, which aggravates the energy crisis. Therefore, it is particularly important to effectively recycle and utilize various waste materials and use scrapped parts in the aluminum processing industry. On the other hand, a large amount of energy is consumed in the process of smeltin...

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 Applications(China)
IPC IPC(8): C22B21/00C22B21/06C22B7/00C22B9/10
CPCC22B7/001C22B9/10C22B21/0069C22B21/062Y02P10/20
Inventor 郭世龙郭启军
Owner 安徽百圣鑫金属科技有限公司
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