Q. Panel test determines the __________ of refractories.

View solution

Q. Fireclay bricks are not used in the

View solution

Q. Fusion point of a basic refractory material is

View solution

Q. RUL of refractories depends on the

View solution

Q. Which is the stable form of silica between 1470°C and the melting point 1713°C ?

View solution

Q. Refractories are dried in the

View solution

Q. Cermets are combination of ceramic and metallic materials due to which they have high strength & resistance to high temperature. Cermets are used in the

View solution

Q. Hot metal runner in blast furnace are lined with __________ bricks.

View solution

Q. Spray test determines the __________ of refractories.

View solution

Q. Thermal diffusivity of a refractory brick is high, when its __________ is high.

View solution

Q. High porosity refractory bricks have

View solution

Q. Vacuum steel degassing units are lined with

View solution

Q. Pyrometric cone equivalent (PCE) value (Segar cone) of 'superduty refractories' is more than 33 which corresponds to a temperature of __________ °C.

View solution

Q. Which is the stable form of silica below 870°C ?

View solution

Q. Capacity of a refractory brick to withstand-sudden changes in temperature is denoted by the property called

View solution

Q. Magnesite bricks are used in those parts of furnaces, which are

View solution

Q. Which is not a basic refractory ?

View solution

Q. Thoria

View solution

Q. Which property of refractories is the most important for top section of the blast furnace?

View solution

Q. Which one expands on heating ?

View solution