Cradle to Consumer
Identity ID
38f58e41-6937-4187-93e8-ebf3e5919d86
Waste treatment
Associated ID
40e39cc9-bba6-40b9-9279-cd58305521a2
Included activities starts
Included activities ends
Description
This is a market dataset representing the consumption market in the region. It includes transportation of the product from the factory gate to consumption, with transport services calculated according to the regional transportation conditions for the product.
Activity Description
The process flow for producing aluminum-silicon alloy through recycling waste aluminum alloys includes two stages: pre-treatment of waste aluminum (magnetic separation, eddy current separation, and heavy medium separation) and remelting of recycled aluminum (drying, remelting).
Process Description
Silicon-aluminum alloy is a binary alloy composed of silicon and aluminum, primarily used as an alloy material in aerospace, space technology, and portable electronic devices. It is also widely used in the automotive and machinery industries for manufacturing parts that operate under sliding friction conditions.
Time period
2020
2026
Geography
China,Yunnan
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Currently, there are mainly two methods for producing aluminum-silicon alloys: (1) primary aluminum smelting to prepare alloys, and (2) recycling and reuse of scrap aluminum alloys. Recycling scrap aluminum has low energy consumption, requiring only 5% of the energy needed for primary aluminum production, offers high recovery yield, and allows for multiple recycles. Moreover, secondary aluminum production requires lower investment and has a short payback period, providing significant cost and energy efficiency advantages over primary aluminum-based alloy production. The production of customized aluminum-silicon alloys from aluminum scrap is selected as the research subject. The production process mainly includes two stages: scrap aluminum pretreatment and remelting of recycled aluminum. The pretreatment process aims to separate waste aluminum from contaminants through methods such as magnetic separation, eddy current separation, and heavy middlings separation (HMS). After drying, the concentrated aluminum is mixed with a refining agent and metallic silicon, followed by remelting under a nitrogen atmosphere.