Question

Which of the following statements is/are correct about slag ?
A. The slag is lighter than molten metal
B. The calcium silicate, `CaSiO_3` is obtained is slag formation zone in the extraction of iron from haematite ore
C. In blast furnace/Bessemer converter , the upper layer of molten liquid (i.e. molten metal) is of slag
D. The slag is fusible matter.

Answer 1

Correct Answer - A,B,C,D
(A)True statement
(B)`CaCO_3 overset(Delta)toCaO+CO_2`
`CaO+SiO_2 to CaSiO_3`
These reactions take place in slag formation zone at temperature `~~`1275 K
(C ) True statement.
(D)Infusible matter + Flux =Fusible matter (slag)