The reaction that does NOT take place in a blast furnace between 900 K to 1500 K temperature range during extraction of iron is?
The reaction that does NOT take place in a blast furnace between 900 K to 1500 K temperature range during extraction of iron is?
FeO + CO \(\to\) Fe + CO2
C + CO2 \(\to\) 2CO
CaO + SiO2 \(\to\) CaSiO3
Fe2O3 + CO \(\to\) 2FeO + CO2
The Correct Option is D
Approach Solution - 1
The reaction FeO + CO → Fe + CO2 is a reduction reaction essential for extracting iron. Hence, this reaction does occur.
C + CO2 → 2CO represents the formation of CO, which is a reducing agent vital for further reactions. This takedns place.
CaO + SiO2 → CaSiO3 is a slag formation reaction to remove impurities and occurs within the furnace's temperature range.
The reaction Fe2O3 + CO → 2FeO + CO2 is not a typical occurrence at the given temperature range in the blast furnace process, as Fe2O3 is reduced in stages to obtain metallic iron, not reverted to FeO.
Fe2O3 + CO → 2FeO + CO2
Approach Solution -2
Fe2O3 + CO → 2FeO + CO2
This reaction does not take place at between 900 K to 1500 K temperature range during extraction of iron.
It takes place at between 500 K to 800 K temperature range.
So, the correct option is (D): Fe2O3 + CO \(\to\) 2FeO + CO2
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Concepts Used:
General Principles and Processes of Isolation of Elements
What are Ores and Minerals?
Minerals are the naturally occurring, homogeneous inorganic solid substances. They are having a definite chemical composition and crystalline structure, hardness and color. For example, copper pyrite, calamine, etc.
Impurities in an ore are called gauge. The removal of a gauge from the ore is called concentration ore.
Several steps are involved in the extraction of pure metal from ores. Major steps are as follows –
- Concentration of the ore
- Isolation of the metal from its concentrated ore
- Purification of the metal