Aluminum recycling system with sustainable material management

铝渣是铝熔炼过程中的副产品。在日本，使用所谓的金属再生机(MRM)，通过物理分离回收铝渣中的金属铝。不可避免地会产生大量含有氧化物、金属铝、氮化物和氯化物的铝渣。为了实现铝渣的简易提纯，作者重点研究了铝渣中金属铝等物质的粒度分布。本研究的目的是为了弄清残留物中颗粒的组成与粒度之间的关系。尽管残留物来自不同的公司，但通过筛选可以提高每个残留物中的金属铝含量。

Aluminum dross is a by-product of aluminum melting process. In Japan, metallic aluminum in aluminum dross is recovered by physical separation, using the so-called Metal Reclamate Machine (MRM). A large amount of the aluminum dross residue containing oxides, metallic aluminum, nitrides, and chlorides is unavoidably generated. To upgrade aluminum dross residue by easier technique, the authors paid attention to the size distributions of the metallic aluminum and other materials in the residue. The purpose of this study was to clarify the relationship between the composition and the grain size of the particles in the residue. In spite of the residues being obtained from different companies, the metallic aluminum content in each residue can be increased by screening.