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BIR TLE Y GA LVA N IZIN G | HOT DI P GALVANI ZI NG
HOT DIP GALVANIZING
In the galvanizing process, iron or steel articles are dipped
into a bath containing molten zinc just above the melting
point. Any zinc that does not form a coating on the metal
remains in the bath for further re-use. Galvanzing residues
that are recovered from the zinc are recycled for further
use. As well as zinc recovered from these residues, recycled
zinc from other sources, such as zinc scrap, is often used
in galvanizing. Galvanized steel can be recycled easily with
other steel scrap in the steel production process.
Improvements in gas burning technology have also greatly
improved energy efficiency in heating the galvanizing
bath. Exhaust heat is not wasted and is used to heat pre-
treatment chemicals or dry work prior to immersion.
The galvanizing industry is committed to understanding
and improving the life-cycle environmental performance
of its process and products. Galvanizers Association has
recently helped establish a Pan-European Life Cycle
Inventory database for general galvanizing. This LCI data
will allow Environmental Product Declarations and other
life cycle assessments to be made on structures involving
galvanized steel.
Need technical advice?
Call the Birtley Galvanizing team direct:
0191 410 4421 | [email protected]