1.

The temperature of the slag zone in the metallurgy of iron using blast furnace is

Answer»

`1500-1600^(@)C`
`400-700^(@)C`
`800-1000^(@)C`
`1200-1500^(@)C`

Solution :Slag formation ZONE is the central zone in the blast FURNACE where the temperature VARIES from `800-1000^(@)C`. Here limestone decomposes into CaO and `CO_(2)`
`CaO_(3)overset(1000^(@)C)(to) CaO+CO_(2)`
CaO acts as a flux as it combines with silica present as an impurity (gangue) t form a fusible slag of `CaSiO_(3)`
`CaO+SiO_(2)overset(1000^(@)C)(to)UNDERSET("Slag")(CaSiO_(3))`


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