Question

Silica refractories are used for-
(a) Electric are furnace roof
(b) Furnace hearth for steel melting
(c) Copper refining furnace
(d) All of the above​

Answer 1

Answer:

(c) Copper refining furnace.

Explanation:

Silica refractories are refractories containing more than 93% silicon oxide (SiO2). They are acidic, have high resistance to thermal shock, flux and slag resistance, and high spalling resistance. Silica bricks are often used in the iron and steel industry as furnace materials.

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