Question

please tell the answer​

Answer 1

A Blast Furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally crude iron, but also others such as lead or copper. Blast refers to the combustion air being "forced" or supplied above atmospheric pressure.

Carbon and graphite refractories are primarily used for blast furnace linings because of their high temperature conductivity and their ability to reduce the heat load by moving the excessive heat to the shell where the heat can be transferred to the water by film cooling or through the cast iron or copper staves. See the diagram attached.

A rotary kiln is a pyroprocessing device used to raise materials to a high temperature (calcination) in a continuous process...