Select the incorrect statement about the pyrometallurgy of iron, given below.In a blast furnace the lower portion has higher temperature upto about 2200 KThe sum ΔrG(C, CO) + ΔrG(FeO, Fe) becomes more negative on moving towards lower portion of furnaceThe iron obtained from blast furnace is known as pig ironCO reduces the iron oxide at lower portion while coke(C) reduces the iron oxide at upper portion of furnace
Question
Select the incorrect statement about the pyrometallurgy of iron, given below.In a blast furnace the lower portion has higher temperature upto about 2200 KThe sum ΔrG(C, CO) + ΔrG(FeO, Fe) becomes more negative on moving towards lower portion of furnaceThe iron obtained from blast furnace is known as pig ironCO reduces the iron oxide at lower portion while coke(C) reduces the iron oxide at upper portion of furnace
Solution
The incorrect statement about the pyrometallurgy of iron is: "CO reduces the iron oxide at lower portion while coke(C) reduces the iron oxide at upper portion of furnace".
In reality, the opposite is true. Coke (C) reduces the iron oxide at the lower portion of the furnace where temperatures are higher, while CO reduces the iron oxide at the upper portion of the furnace where temperatures are lower.
Similar Questions
The reaction that does NOT take place in a blast furnace between 900 K to 1500 K temperature range during extraction of iron is :Fe2O3+CO→2FeO+CO2FeO+CO→Fe+CO2C+CO2→2COCaO+SiO2→CaSiO3
What is the main source of heat in the iron extraction process of Iron in a blast furnace?1 markLimestoneIron oxides Hot airCoke
ron ore contains iron(III) oxide, Fe 2 O3 . A blast furnace is used to extract iron from Fe 2 O3 .Equations for some of the reactions in the blast furnace are shown.equation 1 C + O2 → CO2equation 2 CaCO 3 → CaO + CO2equation 3 CaO + SiO2 → CaSiO3(a) Equation 1 shows the combustion of carbon in the blast furnace.(i) Name the substance which provides the carbon for this reaction........................................................................................................................................ [1](ii) State the purpose of the combustion of carbon in the blast furnace.
Iron(III) oxide, Fe2 O3 , in iron ore is converted to iron when it reacts with carbon monoxide, CO,in the blast furnace.(i) Calculate the percentage by mass of iron in iron(III) oxide, Fe 2 O3 .percentage = ..............................% [2](ii) State the name of the iron ore which consists mainly of iron(III) oxide........................................................................................................................................ [1](iii) Describe how carbon monoxide is formed in the blast furnace........................................................................................................................................ [1](iv) Write the symbol equation to show the reaction that occurs when iron(III) oxide is convertedto iron in the blast furnace........................................................................................................................................ [2](v) Name the chemical process which happens to iron when iron(III) oxide is converted toiron in the blast furnace........................................................................................................................................ [1](c) State the type of reaction shown by equation 2............................................................................................................................................... [1]
Consider the following reactions which occur in blast furnace for the extraction of iron from its ore.Fe2O3 + CO Fe3O4 + CO2 (T1)FeO + CO Fe + CO2 (T2)FeO + C Fe + CO (T3)Fe3O4 + CO FeO + CO2 (T4)Where T1, T2, T3 and T4 are the temperatures at which reactions occur in blast furnace. Which of the following option contains the correct order of temperature?
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