The Smelting Industry: Global Importance And
Tin was also first smelted in combination with copper in 3500 BC, to make bronze according to Makin Metals Powders. 3. Methods and Processes. Various metals have processes of smelting. For iron, once the ore is obtained through open cast or underground mining, it''s conveyed up to the surface for crushing, washing, and then taken to the smelter.