Q. Bauxite calcining rotary kilns are lined with __________ bricks.

View solution

Q. Use of higher percentage of lime for bonding silica bricks, reduces their

View solution

Q. Grog addition in fireclay during brick manufacture is done to

View solution

Q. Which of the following bricks should not be used, if the furnace is to be used intermit-tantly ?

View solution

Q. Refractory castables are used for

View solution

Q. The largest consumer of refractories is the __________ industry.

View solution

Q. Graphite or carbon refractories

View solution

Q. 'Spinel', a refractory mineral is chemically represented as

View solution

Q. Carbon bricks are not used in the lining of the

View solution

Q. Pick out the wrong statement.

View solution

Q. 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.

View solution

Q. Chrome magnesite bricks are

View solution

Q. The main raw material for manufacture of silicon carbide refractories is

View solution

Q. Chromite refractories are used in

View solution

Q. Which of the following has the lowest electrical resistivity ?

View solution

Q. Dry mix hydraulic compositions of refractory aggregates with suitable bonding materials are called refractory

View solution

Q. Silica bricks have low spalling resistance below 600°C, due to its

View solution

Q. Tar dolomite bricks are used in the

View solution

Q. Pick out the wrong statement.

View solution

Q. Which furnace consumes maximum refractory annually in an integrated steel plant ?

View solution