Question:
Which of the processes is not part of pyrometallurgy?
Which of the processes is not part of pyrometallurgy?
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"Pyro" means fire/heat; "Hydro" means water/solution.
Updated On: Jul 4, 2026
- Calcination of lime stone
- Roasting of sulfide ores
- Smelting of iron ore
- Leaching of copper ore with $H_{2}SO_{4}$
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The Correct Option is D
Solution and Explanation
Step 1: Concept
Pyrometallurgy involves thermal treatment of minerals (roasting, smelting, calcination).
Step 2: Meaning
Hydrometallurgy involves the use of aqueous solutions to extract metals from ores.
Step 3: Analysis
Calcination, roasting, and smelting use high temperatures. Leaching uses chemical solutions at low temperatures.
Step 4: Conclusion
Leaching is a hydrometallurgical process, not a pyrometallurgical one. Final Answer: (D)
Pyrometallurgy involves thermal treatment of minerals (roasting, smelting, calcination).
Step 2: Meaning
Hydrometallurgy involves the use of aqueous solutions to extract metals from ores.
Step 3: Analysis
Calcination, roasting, and smelting use high temperatures. Leaching uses chemical solutions at low temperatures.
Step 4: Conclusion
Leaching is a hydrometallurgical process, not a pyrometallurgical one. Final Answer: (D)
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