Refractory Technology Bauxite calcining rotary kilns are lined with __________ bricks. Corundum 85% alumina Carbon Fireclay Corundum 85% alumina Carbon Fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Lower wall courses of soaking pits are made of __________ bricks to avoid the action of molten slag & scale. Silica Silicon carbide Lowduty fireclay Chrome or magnesite Silica Silicon carbide Lowduty fireclay Chrome or magnesite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which brick undergoes maximum shrinkage on drying? Magnesite bricks Tar bonded dolomite bricks Fireclay bricks Chromite bricks Magnesite bricks Tar bonded dolomite bricks Fireclay bricks Chromite bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one contains minimum percentage of SiO₂? Sillimanite Semi-silica Firebrick Aluminous firebrick Sillimanite Semi-silica Firebrick Aluminous firebrick ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Addition of grog in fireclay brick during its manufacture is advantageous, because it results in High strength & thermal spalling resistance Less shrinkage in heating, decreased apparent porosity & increased specific gravity All of these Less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production High strength & thermal spalling resistance Less shrinkage in heating, decreased apparent porosity & increased specific gravity All of these Less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Test piece for determination of RUL of a refractory is heated in a/an Neutral atmosphere Oxidising atmosphere Reducing atmosphere Electric furnace Neutral atmosphere Oxidising atmosphere Reducing atmosphere Electric furnace ANSWER DOWNLOAD EXAMIANS APP
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