Since the aluminum alloy used for casting contains more chemical elements and has a wide range of composition restrictions, it is relatively easy to produce cast aluminum or castings using recycled scrap automobile aluminum.
There is a factory that produces recycled aluminum alloy using scrap aluminum such as automobile chips and pistons as raw materials.
The process is to screen the scrap aluminum, remove iron through magnetic separation, then melt it at high temperature, stir it to make slag, then alloy it, degas and refine it, and finally cast it.
The recovery rate that can be obtained is 88%, and the energy consumption for each ton of recycled aluminum is 200 kg of coke, which is significantly lower than the energy consumption for producing cast aluminum using original aluminum as raw material.
