Question:
The statement that is NOT correct is
The statement that is NOT correct is
Updated On: Apr 2, 2024
- Collectors enhance the wettability of mineral particles during froth flotation
- Copper from its low grade ores is extracted by hydrometallurgy
- A furnace lined with Haematite is used to convert cast iron to wrought iron.
- In vapour phase refining, metal should form a volatile compound
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The Correct Option is A
Solution and Explanation
In froth flotation method, the substances like pine oil, xanthates and fatty acids are collectors. These substances attach themselves by polar groups to grain the minerals which then become water repellant and thus pass on into the froth. Thus, in other words, collectors enhance the non wettability of mineral acids.
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Concepts Used:
General Principles and Processes of Isolation of Elements
What are Ores and Minerals?
Minerals are the naturally occurring, homogeneous inorganic solid substances. They are having a definite chemical composition and crystalline structure, hardness and color. For example, copper pyrite, calamine, etc.
Impurities in an ore are called gauge. The removal of a gauge from the ore is called concentration ore.
Several steps are involved in the extraction of pure metal from ores. Major steps are as follows –
- Concentration of the ore
- Isolation of the metal from its concentrated ore
- Purification of the metal