FeO is the impurity in the extraction of Cu from copper pyrite. Which of the following flux is used for the removal of impurity ?

C a O

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M g O

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S i O_{2}

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F e S i O_{3}

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Solution

The correct option is B $S i O_{2}$
The flux used for the removal of impurity is $S i O_{2}$ .
It reacts with FeO to form $F e S i O_{3}$ slag.
$F e O + S i O_{2} \to F e S i O_{3}$

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Similar questions

Q. During the formation of the slag by the reaction of flux and impurities which of the following is an example of acidic and basic flux?
(i)

F e O + S i O_{2} \to F e S i O_{3}

(ii)

S i O_{2} + M g O \to M g O \to M g S i O_{3}

When copper pyrites is roasted in excess of air, a mixture of CuO + FeO is formed. FeO is present as impurity. This can be removed as slag during reduction of CuO. The flux added to form slag is

Q. What are fluxes? Which flux is used to remove impurity of

F e O

When copper pyrite is roasted in excess of air, a mixture of $C u_{2} S$ and $F e O$ are formed. FeO is present as impurity. This can be removed as slag during Smelting. The flux added to form slag is

When copper pyrites is roasted in excess of air, a mixture of CuO + FeO is formed. FeO is present as impurity. This can be removed as slag during reduction of CuO. The flux added to form slag is

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FeO is the impurity in the extraction of Cu from copper pyrite. Which of the following flux is used for the removal of impurity ?

The correct option is B SiO2The flux used for the removal of impurity is SiO2.It reacts with FeO to form FeSiO3 slag.FeO+SiO2→FeSiO3

The correct option is B $S i O_{2}$
The flux used for the removal of impurity is $S i O_{2}$ .
It reacts with FeO to form $F e S i O_{3}$ slag.
$F e O + S i O_{2} \to F e S i O_{3}$