Extraction of Crude Metal

Calcination process remove the volatile impurities.

The slag formed from the blast furnace during the extraction of iron is used to manufacture high temperature resistant building products.

The slag formed from the blast furnace during the extraction of iron is used to manufacture Portland cement.

Mention few uses of slag formed from the blast furnace during the extraction of iron.

The reducing agent used for the extraction of $\mathrm{Mo}$ and $\mathrm{W}$ is _____.

(A) ${\mathrm{H}}_2$
(B) $\mathrm{CO}$
(C) ${\mathrm{H}}_2\mathrm{S}$

Enter your correct answer as A, B or C.

Discuss the reduction of metal by hydrogen.

During the extraction of haematite, limestone is added which acts as

Give name of furnace used for calcination?

Which of the following reactions is an example of autoreduction?

Write short notes on the following-

slag

Give details (with examples) of the calcination and Roasting. Also mention the difference between them.

Explain the term slag.

${\mathrm{Fe}}_2{\mathrm{O}}_3$ is reduced to spongy iron near the top of blast furnace by:

In blast furnace, iron oxide is reduced by:

Write about any two different furnaces used for extraction of metals?

Write reactions involved at different temperatures in the blast furnace.

What is calcination? Write examples with reactions.

Explain the term: Calcination.

Explain the term:

Roasting.

What is calcination.