The main components of high-grade scrap aluminum slices are cast aluminum alloy, alloy aluminum, pure aluminum, etc. In large-scale secondary aluminum plants, generally only the mixed soil is removed by screening, and they can be directly melted in the furnace. In small secondary aluminum enterprises, such waste aluminum must be manually divided into cast aluminum alloy, alloy aluminum and pure aluminum, and then used separately.
The composition of low-grade slices is extremely complex. In addition to scrap aluminum, it also contains scrap steel, scrap copper, scrap lead and other metals. Therefore, complex sorting is required. The sorting of such wastes mainly depends on manual labor. First, the soil and garbage are screened out. , And then use manual sorting, first sort out non-metallic scraps, and then sort scrap metals. Among them, the selection of scrap copper and scrap pure aluminum is very careful. Because scrap copper can increase the output value, pure aluminum scrap such as scrap aluminum wire, etc. They are all raw materials for adjusting the composition of secondary aluminum smelting.
The sorting of scrap aluminum slices needs to be mechanized and automated to improve production efficiency and reduce production costs.