Question

In the extraction of iron from haematite, the charge used is composed of haematite, coke and lime stone, in the weight ratio:

• A. $1:1:1$
• B. $8:4:1$
• C. $8:1:4$
• D. $1:4:8$

Answer 1

Answer: (B)

$8:4:1$

In the smelting step, the haematite ore is mixed with coke and limestone approximately in the ratio of $8:4:1$. This mixture is called a charge. It is fed into the furnace from the top and a blast of temperature as high as ${1500}^{o}C$ is given.