๐ Metals and Extraction Methods
๐ Metals: Naturally occurring elements that are typically hard, shiny, and have good electrical and thermal conductivity.
๐ Extraction Methods:
⚙️ Physical Methods:
+ Crushing and Grinding
+ Magnetic Separation
⚙️ Chemical Methods:
+ Roasting: Converting sulphides to oxides
+ Smelting: Reducing oxides to metals (e.g., Iron from Iron ore)
+ Electrolytic Reduction: Used for highly reactive metals (e.g., Aluminum from Bauxite)
+ Hydrometallurgy: Using aqueous solutions to extract metals (e.g., Copper from ore)
๐ Examples of Metals and Extraction Methods:
⚙️ Iron (Fe): Smelting of Iron ore (Haematite)
⚙️ Aluminum (Al): Electrolytic reduction of Bauxite
⚙️ Copper (Cu): Smelting and refining of Copper ore
⚙️ Gold (Au): Cyanidation and precipitation
⚙️ Zinc (Zn): Roasting and smelting of Zinc blende (Sphalerite)

No comments:
Post a Comment