Correct option is C
Magnesite bricks
Composition: Magnesite bricks are made from magnesite (MgCO₃), which is a source of magnesium oxide (MgO). These bricks are highly resistant to basic environments (rich in lime or magnesia).
Applications in Furnaces:
Magnesite bricks are extensively used in furnaces and kilns that operate in basic environments, such as steel-making furnaces, cement rotary kilns, and non-ferrous metallurgical furnaces.
They withstand high temperatures (up to 2800°C) and basic slag corrosion effectively.
Advantages of Magnesite Bricks:
High melting point of MgO (~2800°C).
Excellent thermal conductivity and chemical stability in basic conditions.
