The Question is from neet-chemistry basic-chemistry-concepts concentration-methods, and it was created by the author Mr. S M HUSSAIN

Question

Which method is employed for concentrating sulfide ores?

Mr. S M HUSSAIN · Accepted Answer

## CORE INFORMATION
✓ **Answer**: A
## CONCEPT FRAMEWORK
	**Primary Concept**: Ore Concentration
	**Related Topics**: Metallurgy, Mineral Processing, Froth Flotation
	**Prerequisites**: Basic understanding of ore types and separation techniques.
## SOLUTION PATHWAY
**Given Information**:
	The question asks about concentrating sulfide ores.
	Options are Froth flotation, Magnetic separation, Leaching, and Gravity separation.
**Method & Steps**:
	1. Understanding Ore Concentration:  The goal is to increase the concentration of valuable minerals in an ore by removing unwanted gangue (waste material).
	2. Analyzing the Options:
		 a) Froth flotation: This technique exploits the differences in hydrophobicity (water-repelling properties) between sulfide minerals and gangue. Sulfide minerals are typically hydrophobic and attach to air bubbles in a froth, which is then skimmed off. This is highly effective for sulfide ores.
		 b) Magnetic separation: This method uses magnets to separate magnetic minerals from non-magnetic ones.  Sulfide ores are not generally magnetic.
		 c) Leaching: This involves dissolving the desired mineral using a chemical solvent. While leaching is used in some metallurgical processes for sulfide ores, it's not primarily used for concentration.
		 d) Gravity separation: This technique relies on differences in density to separate minerals.  It's less effective for fine-grained sulfide ores.
	3. Selecting the Best Method: Froth flotation is the most widely used and effective method for concentrating sulfide ores due to its ability to separate hydrophobic sulfide minerals from hydrophilic gangue.
		Result: Froth flotation
		Verification: The effectiveness of froth flotation for sulfide ores is well-established in the mining and metallurgical industries.
## OPTION ANALYSIS
A ✓: Froth flotation is the primary method for concentrating sulfide ores, effectively separating them from gangue materials based on their hydrophobic nature.
B :x: Magnetic separation is not effective for most sulfide ores, as they are generally not magnetic.
C :x: Leaching is a chemical process to extract metals, not primarily a concentration technique for sulfide ores.
D :x: Gravity separation is less effective for fine-grained sulfide ores commonly found.
## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing froth flotation with other separation techniques: Understanding the specific principles of each method is crucial.
			How to avoid: Learn the underlying principles of each ore concentration method (flotation, magnetic separation, gravity separation, leaching).
		2. Assuming all ores are processed the same way: Different ore types require different concentration methods.
			How to avoid:  Recognize the properties of different ore types and the best suited separation techniques.
	**Quick Tips**:
		1. Remember that sulfide ores are often hydrophobic, making froth flotation a suitable method.
		2. Associate froth flotation with the use of air bubbles and surfactants to separate minerals based on wettability.

Mr. S M HUSSAIN · Answer

The correct Option is "Froth flotation"

Mr. S M HUSSAIN · Answer

Magnetic separation

Mr. S M HUSSAIN · Answer

Leaching

Mr. S M HUSSAIN · Answer

Gravity separation

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