The main charge in blast furnace is usually___________________?

1.	The main charge in blast furnace is usually___________________?
A.	Iron ore & coke
B.	Iron ore, coke & air
C.	Limestone, coke & iron ore
D.	Limestone, sand & iron ore
Answer» D. Limestone, sand & iron ore

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The main charge in blast furnace is usually___________________?

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