Refractory Technology Questions

• Lower wall courses of soaking pits are made of __________ bricks to avoid the action of molten slag & scale.
• Fireclay bricks are not used in the
• Addition of grog in fireclay brick during its manufacture is advantageous, because it results in
• Thermal conductivity of refractory bricks
• Slide gates in teeming laddie used for steel pouring in ingot moulds is lined with __________ bricks.
• Which is not an acidic refractory?
• Which is an acidic refractory?
• Which form of silica has the highest specific gravity?
• Pure bauxite is the best raw material for the manufacture of high alumina refractories, in which maximum alumina content can be as high as __________ percent.
• Permeability of bricks is a measure of the
• Pyrometric cone equivalent (PCE) of a refractory is the measure of its
• 'Spinel', a refractory mineral is chemically represented as
• Refractory castables are used for
• Which brick undergoes maximum shrinkage on drying?
• Carbon refractories
• Bauxite calcining rotary kilns are lined with __________ bricks.
• __________ bricks are used in the burning zone of a cement rotary kiln.
• Magnesite refractories have low resistance to
• Hot face insulating linings of high purity alumina fused mullite are used, where
• Mixing of ground refractory material and water is done in a __________ mill.