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Question
Chemistry
Which among the following is used as flux in the extraction of iron from oxide ores?
Q. Which among the following is used as flux in the extraction of iron from oxide ores?
2097
216
AP EAMCET
AP EAMCET 2020
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A
S
i
O
2
B
C
a
C
O
3
C
C
a
O
D
C
a
S
i
O
3
Solution:
Lime stone
(
C
a
C
O
3
)
used in the extraction of
F
e
from haematite in blast furnace get decomposed to
C
a
O
, which removes silicate impurity (gangue) of the ore as molten slag.
C
a
C
O
3
A
C
a
O
+
C
O
2
C
a
O
+
S
i
O
2
Δ
C
a
S
i
O
3