824
S. Alam et al.
Conclusion
A sustainable process has been developed for zinc and steel scrap recycling where
zinc was leached in an alkaline media as sodium zincate followed by solvent extraction of zinc with LIX-26 and precipitation as zinc carbonate as a value added product.
Caustic leaching of zinc had an added benefit that avoided dissolution of iron as impurity in the PLS. De-zinced black steel ensured zinc-free feedstock for steelmakers.
This allowed sustainable development by eliminating hazardous zinc dust production
in the steel making plants. Recycling of zinc allowed a decrease of environmental
damage from primary zinc production. It also decreases greenhouse gas production.
Reference
1. Lakshmanan VI, Sridhar R, Alam MS (2005) Recovery of zinc from galvanized coatings.
Canadian Patent, Serial No. CA 2347552 (Issued on April 19, 2005)
S. Alam et al.
Conclusion
A sustainable process has been developed for zinc and steel scrap recycling where
zinc was leached in an alkaline media as sodium zincate followed by solvent extraction of zinc with LIX-26 and precipitation as zinc carbonate as a value added product.
Caustic leaching of zinc had an added benefit that avoided dissolution of iron as impurity in the PLS. De-zinced black steel ensured zinc-free feedstock for steelmakers.
This allowed sustainable development by eliminating hazardous zinc dust production
in the steel making plants. Recycling of zinc allowed a decrease of environmental
damage from primary zinc production. It also decreases greenhouse gas production.
Reference
1. Lakshmanan VI, Sridhar R, Alam MS (2005) Recovery of zinc from galvanized coatings.
Canadian Patent, Serial No. CA 2347552 (Issued on April 19, 2005)