Which of the following raw materials in blast furnace iron making acts as a fuel source to provide the heat, acts as a reducing agent, and provides an open permeable bed through which slag and metal pass down into the hearth and hot reducing gases pass upwards?
-
A.
Dolomite
-
B.
Coke
-
C.
Limestone
-
D.
Coal
Correct Answer:
B. Coke
Explanation:
Coke is the correct answer because it serves three critical functions in a blast furnace. First, it acts as a high-energy fuel source, undergoing combustion to generate the intense heat required to melt iron ore. Second, it functions as a reducing agent by reacting with oxygen to produce carbon monoxide, which then strips oxygen from the iron oxides to yield pure molten iron. Finally, coke provides essential physical support; its high mechanical strength and porous structure create a permeable bed that allows hot gases to rise efficiently while enabling molten metal and slag to trickle down into the hearth without the column collapsing.
Click below to open Discussion & Feedback
0 Issues
Please
login to comment or Report Issues.