Refractory Technology Porosity of fireclay refractories is __________ percent. 35-50 44129 43961 25-35 35-50 44129 43961 25-35 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks are not used in the Beehive coke oven Coke oven regenerators Combustion chamber of B.F. stoves By-product coke oven walls Beehive coke oven Coke oven regenerators Combustion chamber of B.F. stoves By-product coke oven walls ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rotary kilns meant for calcination of limestone are lined with chrome magnesite in __________ zone. Burning Cooling All of these Preheating Burning Cooling All of these Preheating ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Graphite or carbon refractories Are not resistant to corrosion by slag Exhibit high shrinkage on thermal treatment Exihibit wetting characteristics Should be used in neutral or reducing atmosphere Are not resistant to corrosion by slag Exhibit high shrinkage on thermal treatment Exihibit wetting characteristics Should be used in neutral or reducing atmosphere ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories have low resistance to Abrasion Disintegration on sudden change of temperature Both B and C Attack by basic slag Abrasion Disintegration on sudden change of temperature Both B and C Attack by basic slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Except __________ , all other refractories are bad conductors of electricity (i.e, have low electrical conductivity). Graphite Chromite Carborundum Fireclay Graphite Chromite Carborundum Fireclay ANSWER DOWNLOAD EXAMIANS APP