Iron ore hematite is concentrated using ____________________?
Correct answer: B. Gravity separation
- A. Electromagnetic separation mainly
- B. Gravity separation
- C. Froth floatation
- D. Roasting
Explanation
Hematite ore is commonly concentrated by gravity separation because the iron-bearing mineral has a higher density than much of its gangue. Roasting is a treatment step rather than the main concentration method here.
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