Grinding efficiency of a ball mill is of the order of _______________ percent?
Grinding efficiency of a ball mill is of the order of _______________ percent?
A. 1-5
B. 40-50
C. 75-80
D. 90-95
Similar Posts
_____________ mills are termed as disintegrators?
_____________ mills are termed as disintegrators?A. Cage
B. Compartment
C. Pebble
D. All tumblingFor the preliminary breaking of hard rock, we use a____________________?
For the preliminary breaking of hard rock, we use a____________________?A. Gyratory crusher
B. Ball mill
C. Tube mill
D. Squirrel-cage disintegratorMechanical conveyors which push the material along an endless trough or tube are called scrappers. Which of the following conveying equipments comes under the category of „scrappers‟ ?
Mechanical conveyors which push the material along an endless trough or tube are called scrappers. Which of the following conveying equipments comes under the category of „scrappers‟ ?A. Bucket conveyor
B. Flight conveyor
C. Screw conveyor
D. Both B. and C.Dust collection efficiency of electrostatic precipitator can be as high as 99.9%. Maximum temperature and pressure of dust laden gas that can be cleaned in an electrostatic precipitator is respectively ?
Dust collection efficiency of electrostatic precipitator can be as high as 99.9%. Maximum temperature and pressure of dust laden gas that can be cleaned in an electrostatic precipitator is respectively ?A. 200°C and 5 atm
B. 1000°C and 10 atm
C. 500°C and 50 atm
D. 1000°C and 500 atmColloid mills achieve size reduction mainly by___________________?
Colloid mills achieve size reduction mainly by___________________?A. Impact
B. Attrition
C. Cutting
D. CompressionFilter aid is used to____________________?
Filter aid is used to____________________?A. Increase the rate of filtration
B. Decrease the pressure drop
C. Increase the porosity of the cake
D. Act as a support base for the septum