Question

23. Which of the following bricks are
used for lining of furnaces? *
A) Over-burnt bricks
(B) Under-burnt bricks
(C) Refractory bricks
(D) First class bricks
​

Answer 1

$\huge\mathfrak\red{AnsWeR࿐}$ :-✧ $\huge{(C) \ Refractory \ bricks}$

A fire brick is a special type of brick made using fire clay and has a good resistance against high temperatures which are used in kilns, lining furnaces, fireplaces and fireboxes.

Many furnaces still use low iron, dense 42-62% Alumina, Mullite refractory bricks, conventional Carbon blocks etc. in the bottom and lower hearth while the present trend is to replace it with super micro-pore Graphite bricks.

Answer 2

The answer is Option C- Refractory Bricks.

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