Which of the following methods are employed in the extraction of tin from cassiterite?

Froth floatation

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Magnetic separation

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Gravity separation

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Calcination

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Solution

The correct option is C
Gravity separation

Cassiterite ( ${SnO}_{2}$ ) contains some magnetic impurities ( ${FeWO}_{4} + {MnWO}_{4}$ ) which can be removed by magnetic separation. In general this step happens just before the carbon reduction stage. Being an heavy ore it can beconcentrated using gravity separation also.

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Which of the following methods are employed in the extraction of Sn from Cassiterite?

The methods chiefly used for the extraction of lead and tin from their ores are respectively _________________.

Extraction of metal from the ore cassiterite involves:

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