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  • In a metallurgical process the flux used for removing acidic impurities is:Option: 1 Sodium carbonateOp

In a metallurgical process the flux used for removing acidic impurities is:

Option: 1

Sodium carbonate


Option: 2

Limestone


Option: 3

Sodium chloride


Option: 4

Silica


Answers (1)

best_answer

Basic flux like limestone(CaCO3) is used to remove acidic impurities such as SiO2. The process occurs as follows:

\\\mathrm{CaCO_{3}\: \rightarrow \: CaO\: +\: CO_{2}} \\\\\mathrm{CaO\: \rightarrow \: SiO_{2}\: +\: CaSiO_{3}}
Basic          Acidic          Slag
 flux            gangue

Therefore, Option(2) is correct.

Posted by

Nehul

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