RECYCLING METAL CONTAINING COMPOSITIONS

摘要

Recycling Metal Containing Compositions By treating a solution derived from bag filter dust--a side product from metal recycling processes--first with a minor amount of iron and subsequently with a minor amount of zinc, a product is produced that includes zinc and iron in the absence of contaminants such as cadmium, copper, nickel, lead and precious metals. Significantly, this essentially pure zinc/iron composition is commercially attractive as an animal feed supplement.