Scrap Wiki
Shredded Non-Ferrous Scrap, commonly referred to as "Zorba," is a mixed, fragmentary waste material made predominantly of aluminum but also containing other metals such as zinc, brass, copper, and stainless steel. Polished shredded non-ferrous scrap, specifically intended for compliance with import standards to China, refers to aluminum fragments that have undergone polishing.
Zorba, as designated by the Institute of Scrap Recycling Industries (ISRI), is defined as: crushed non-ferrous scrap (predominantly aluminum), consisting of a combination of non-ferrous metals including aluminum, copper, lead, magnesium, stainless steel, nickel, tin, and zinc, in elemental or alloy form (solid). The percentage of each non-ferrous metal must be agreed upon by the buyer and seller. The scrap is obtained through eddy current separation, air separation, flotation, screening, or other separation technologies, alone or in combination. It is subjected to one or more magnets to reduce or eliminate free iron and/or large ferrous contaminants. It does not contain radioactive material, slag, or ash.
In describing Zorba, there is a significant nomenclature used to specify its grade, specifically the metal content and copper content, denoted as "xx/xx." For instance, "95/5" signifies that the shredded material contains 95% metal content, of which 5% comprises copper or "reds" (including copper, brass, and crushed copper wire).
