Question

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) $FeO+SiO_{2} \rightarrow FeSiO_{3}$
(ii) $SiO_{2}+MgO \rightarrow MgSiO_{3}$

• A. (i) $SiO_{2}$ -Acidic flux
  (ii) $MgO$ -Basic flux
• B. (i) $SiO_{2}$ -Basic flux
  (ii) $MgO$ -Acidic flux
• C. (i) $SiO_{2}$ -Basic flux
  (ii) $MgO$ -Basic flux
• D. (i) $SiO_{2}$ -Acidic flux
  (ii) $MgO$ -Acidic flux

Answer 1

Answer: (A)

(i) $\underset{\underset{\text{impurity}}{\text{basic}}}{F e O}+\underset{\underset{\text{flux}}{\text{acidic}}}{S i O_{2}} \rightarrow \underset{\text{slag}}{F e S i O_{3}}$
(ii) $\underset{\underset{\text{impurity}}{\text{acidic}}}{S i O_{2}}+\underset{\underset{\text{flux}}{\text{basic}}}{M g O} \rightarrow \underset{\text{slag}}{M g S i O_{3}}$