What are the sources of alloy components in the galvanizing pot?

The sources of various alloy components in molten zinc can be broadly categorized into three types: Firstly, inevitable natural inclusions in commercial zinc or remelted zinc, such as lead, iron, cadmium, copper, arsenic, antimony, tin, and others. Secondly, the deliberate addition of certain alloy elements to the molten zinc for specific purposes. For example, adding different amounts of aluminum to alter the surface finish or microstructure of the galvanized zinc coating. Thirdly, unavoidable impurities. These include other impurities and contaminants inadvertently introduced into the galvanizing pot during the process of remelting zinc or cleaning up zinc scraps on the ground.