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Q: Which component enhances the refractory properties of bricks and makes them resistant to high temperatures?
  • A. Alumina
  • B. Silica
  • C. Iron oxide
  • D. Clay
Correct Answer: Option A - These are made from fire-clay using the same process as an ordinary • They are yellowish or light brown coloured brick • It is made up of materials which have high melting points and have properties which make them suitable to act as heat resisting barriers between high and low temperature zones. • Alumina enhances the refractory properties of bricks and makes them resistant to high temperatures. • Water absorption varies from 4–10% and this compressive strength lies b/w 15–20 N/mm² • It is generally used for the lining blast furnaces ovens, kiln, Boilers and chimneys
A. These are made from fire-clay using the same process as an ordinary • They are yellowish or light brown coloured brick • It is made up of materials which have high melting points and have properties which make them suitable to act as heat resisting barriers between high and low temperature zones. • Alumina enhances the refractory properties of bricks and makes them resistant to high temperatures. • Water absorption varies from 4–10% and this compressive strength lies b/w 15–20 N/mm² • It is generally used for the lining blast furnaces ovens, kiln, Boilers and chimneys

Explanations:

These are made from fire-clay using the same process as an ordinary • They are yellowish or light brown coloured brick • It is made up of materials which have high melting points and have properties which make them suitable to act as heat resisting barriers between high and low temperature zones. • Alumina enhances the refractory properties of bricks and makes them resistant to high temperatures. • Water absorption varies from 4–10% and this compressive strength lies b/w 15–20 N/mm² • It is generally used for the lining blast furnaces ovens, kiln, Boilers and chimneys