In the process of extraction of iron from iron pyrite ore, which of the following process is/are used for concentration of ore?

Magnetic separation.

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Gravity separation.

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Froth flotation.

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Solution

The correct options are
A Magnetic separation.
C Froth flotation.
Chemically, iron pyrite is ${FeS}_{2}$ .
Magnetic separation is applicable when either the ore particles or the impurities are magnetic (attracted by a magnet) in nature.
In case of iron pyrite the ore particles are magnetic in nature hence it can be concentrated using magnetic separation.

Also as the formula ${FeS}_{2}$ suggests - does have sulphur atoms. Froth floatation is mainly used for sulphide ores. So, we can definitely use froth flotation process for concentration.

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Iron oxide ore is purified by magnetic separation, but iron sulphide is separated from impurities by froth flotation. Why?

State the principle for each of the following processes which are used in metallurgy in general.
(i) Roasting
(ii) Gravity separation
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In the process of extraction of iron from iron pyrite ore, which of the following process is/are used for concentration of ore?

Q. Which of the following processes are used for concentration of iron pyrite ore?

Q. Froth flotation process which is used for the concentration of sulphide ore:

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