how does a collector separate the ore from gangue in the froth flotation process

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Solution

The collector such as xanthates imparts water repellant properties to mineral particles. Therefore, the mineral particles which are wetted by frother such as pine oil stick to the air bubbles and rise to the surface along with the foam whereas the gangue particles which are wetted by water settle at the bottom of the tank.

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If both ore and gangue contain sulphur then ___ is used to separate ore from gangue in the froth flotation process.

Assertion – In froth flotation process sodium ethyl xanthate is used as collector.

Reason: Sulphide ores are water soluble.

In the froth flotation process, stabilizers are used to attach ore particles to air bubbles in the froth.

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