Calcination or Roasting will be done for the products of the ______ process to remove impurities.

smelting

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froth flotation

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electrolytic reduction

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magnetic separation

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Solution

The correct option is A
smelting

The order of the metallurgical process is:

$R a w o r e o r e c o n c e n t r a t i o n - --------- \to C o n c e n t r a t e d O r e c o n v e r t t o o x i d e - -------- \to m e t a l o x i d e R e d u c t i o n o f o r e - --------- \to C r u d e m e t a l R e f i n i n g - ---- \to P u r e m e t a l$

Smelting is one of the processes for the reduction of 'concentrated ore' to 'crude metal'. To purify crude metal refining is done, while calcination/roasting is used for convert ore to oxide.

Suggest Corrections

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Calcination or Roasting will be done for the products of the smelting process to remove impurities.

Q. What is the appropriate order of processes for the extraction of lead from Galena?
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\to

Roasting

\to

Reduction

\to

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Q. Froth flotation

\to

Roasting

\to

Reduction

\to

Electrolysis
The above processes are used in the extraction of:

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