Question:
Which is the cheapest method of metal extractions?
Which is the cheapest method of metal extractions?
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Hydro = Low Energy/Low Grade = Low Cost.
Updated On: Jul 4, 2026
- Pyrometallurgical
- Hydrometallurgical
- Electrometallurgical
- All are equally cheap
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Concept
Extraction costs depend on energy consumption, reagent prices, and capital equipment.
Step 2: Meaning
Pyrometallurgy requires massive fuel for high temperatures. Electrometallurgy requires high electricity.
Step 3: Analysis
Hydrometallurgy (like heap leaching) often operates at ambient temperatures and can treat very low-grade ores economically.
Step 4: Conclusion
Hydrometallurgy is generally considered the most cost-effective method for low-grade ore extraction. Final Answer: (B)
Extraction costs depend on energy consumption, reagent prices, and capital equipment.
Step 2: Meaning
Pyrometallurgy requires massive fuel for high temperatures. Electrometallurgy requires high electricity.
Step 3: Analysis
Hydrometallurgy (like heap leaching) often operates at ambient temperatures and can treat very low-grade ores economically.
Step 4: Conclusion
Hydrometallurgy is generally considered the most cost-effective method for low-grade ore extraction. Final Answer: (B)
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