Refractory Technology Questions

• Tar dolomite bricks are used in the
• Conversion of silica mineral to cristobalite is accompanied by reduction in its
• Chrome magnesite is not used in the
• Sillimanite is a __________ refractory.
• The main raw material for manufacture of silicon carbide refractories is
• High refractorinness of refractory bricks means, that it has a
• Which furnace consumes maximum refractory annually in an integrated steel plant?
• Carbon refractories have very high
• Because of its very high refractoriness of the order of __________ °C, silicon carbide refractories are used in zinc smelting furnace, muffle furnace and for supporting the wares in tunnel kilns.
• Chrome magnesite bricks are
• Which of the following bricks has the most close values of RUL and PCE?
• Silica bricks have low spalling resistance below 600°C, due to its
• Pick out the wrong statement.
• Carbon bricks are not used in the lining of the
• Silica refractories are not used in
• Which of the following has the lowest electrical resistivity?
• Segar cones are used for the determination of __________ of refractories.
• Lower part of hot metal mixer are lined with __________ bricks.
• Pick out the wrong statement.
• Pick out the wrong statement.