Volatile impurities are removed from ores by means of

Question

Quizplus · Accepted Answer

Volatile impurities can be removed from ores by roasting, which involves heating the ore in the presence of air to convert the impurities into gases that can be driven off. This is a common method for removing volatile impurities from metal sulfide ores.

B) Amalgamation is a method for extracting metals, particularly gold, from ores using mercury, and does not involve removing volatile impurities.

C) Electrolysis involves passing an electric current through a chemical compound in order to separate its components, and is not typically used for removing volatile impurities from ores.

D) Flotation is a method for separating valuable minerals from gangue (unwanted material) in ores using bubbles to selectively adhere to the desired mineral particles, but it does not remove volatile impurities.

E) Zone refining is a purification process for metals that involves passing a molten material through a temperature gradient to remove impurities, but it is not typically used for removing volatile impurities from ores.

Volatile Impurities Are Removed from Ores by Means of