Question

What method can be used for beneficiation of the haematite?

1. Froth flotation process.
2. Magnetic separation.
3. Gravity method.
4. Calcination method.

Answer 1

We know that the purest kind of iron is wrought iron and it is commercially available and is prepared from cast iron by heating cast iron during a furnace lined with Haematite. Impurities pass into the slag and thus the slag later are often easily separated to yield pure iron.

Complete step by step answer:
We must remember that the Froth Flotation process is especially wont to remove impurities from sulfide ores. The ore is powdered and a suspension is formed in water.
Therefore, option 1 is incorrect.
Hematite is an iron oxide mineral. Iron oxide has magnetic properties and hence, magnetic separation is the best method which can be used for beneficiation of the hematite.
Therefore, the option 2 is correct.
The concentration of haematite is done by Gravity separation method. Gravity method is based on the difference among the densities of the ore particle and gangue. The ores of oxide and the ores of carbonate are concentrated by this method.
Therefore, option 3 is incorrect.
Calcination is the process of heating of solids to a heat for the aim of removing volatile substances, oxidizing a number of mass, or rendering them friable. Calcination, therefore, is typically considered a process of purification. A typical example is that the manufacture of lime from limestone.
Therefore, option 4 is incorrect.

Therefore, the option 2 is correct.

Note:
As we know that the extraction of iron from its ore is the penultimate process within the Metallurgy. The extraction of metals and its isolation occurs over a three major steps,
1.Concentration of Ore
2.Extraction of metal from concentrated Ore
3.Purification of the metal