Ball mill is used for__________________?
Ball mill is used for__________________?
A. Crushing
B. Coarse grinding
C. Fine grinding
D. Attrition
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Colloidal mills are used for ______________ grinding?
Colloidal mills are used for ______________ grinding?A. Coarse
B. Intermediate
C. Fine
D. UltrafineParticle size range in which dust catcher (gravity settling chamber) works most effectively and efficiently is ______________ microns?
Particle size range in which dust catcher (gravity settling chamber) works most effectively and efficiently is ______________ microns?A. < 5
B. 10 to 25
C. < 74
D. > 1000Gyratory crushers compared to the reciprocating jaw crushers__________________?
Gyratory crushers compared to the reciprocating jaw crushers__________________?A. Have greater capacity per unit of discharge area
B. Crush intermittently
C. Are less suitable for coarse materials
D. Have less steady power consumptionEnergy requirement (per unit mass of material crushed/ground) is highest for__________________?
Energy requirement (per unit mass of material crushed/ground) is highest for__________________?A. Jaw crusher
B. Rod mill
C. Ball mill
D. Fluid energy millThe most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the__________________?
The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the__________________?A. Venturi atomiser
B. Gravity settling chamber
C. Electro-static precipitator
D. Cyclone separatorRaw materials are charged in the iron blast furnace using____________________?
Raw materials are charged in the iron blast furnace using____________________?A. Bucket elevator
B. Skip hoist
C. Screw conveyor
D. None of these