Aluminium dross recycling

[1][2] The mechanical process of recycling does not use any toxic chemicals previously used in the process of extracting the valuable aluminium in the dross.

[3] Hot dross processing is a system whereby the majority of metal is recovered without chemically reducing the aluminium oxides.

The dross is first crushed then separated into aluminium rich particles and aluminium oxide rich particles based on density.

[citation needed] The recovery of aluminium from dross has traditionally caused severe environmental issue with highly alkaline waste waters, a waste product that is rich in waste flux and that evolves ammonia gas on contact with water and can spontaneously combust if allowed to get wet [4] A novel method developed in New Zealand claims to be an environmentally sensitive method, non-toxic, and different from previous methods which resulted in a concentrated highly toxic salt cake residue.

[6] Aluminium oxide has a variety of industrial uses which includes being used in paint, dye, concrete, explosives, and fertilizer.