Basic slag is not ground in_________________?

Related Mcqs:

1. The optimum moisture content in solids to be crushed/ground ranges from _______________ percent?

   A. 3 to 4
   B. 8 to 10
   C. 10 to 15
   D. 15 to 20

2. Molten ammonium nitrate is mixed with ground limestone in fertilizer plant in a__________________?

   A. Pug mill
   B. Mixer-extruder
   C. Banbury mixer
   D. Muller mixer

3. Wheat is ground into flour in a___________________?

   A. Hammer crusher
   B. Roller crusher
   C. Impact mill
   D. Fluid energy mill

4. Energy requirement (per unit mass of material crushed/ground) is highest for__________________?

   A. Jaw crusher
   B. Rod mill
   C. Ball mill
   D. Fluid energy mill

5. The basic filtration equation is given as dt/dV = (μ/A ΔP). [(α .CV/A) + Rm], where, V is volume of the filtrate; A is the filtration area, a is specific cake resistance, μ is viscosity of the filtrate, and C is the concentration of the solids in the feed slurry. In a 20 minutes constant rate filtration, 5 m3 of filtrate was obtained. If this is followed by a constant pressure filtration, how much more time in minutes, it will take for another 5 m3 of filtrate to be produced? Neglect filter medium resistance, Rm; assume incompressible cake ?

   A. 10
   B. 20
   C. 25
   D. 30

6. In a size reduction crushing operation, feed size is 300 to 1500 mm while the product size is 100 to 300 mm. This is a case of the ________________ crushing?

   A. Secondary
   B. Fine
   C. Primary
   D. Ultrafine

7. Filtration operation carried out by continuous increase of the inlet pressure of slurry, is called the _____________ filtration?

   A. Constant rate
   B. Varying pressure
   C. Varying rate
   D. Constant pressure

8. In case of a ball mill ?

   A. Coarse feed requires a larger ball
   B. Fine feed requires a larger ball
   C. Operating speed should be more than the critical speed
   D. None of these

9. With increase in the capacity of screens, the screen effectiveness__________________?

   A. Remains unchanged
   B. Increases
   C. Decreases
   D. Decreases exponentially

10. A filter press is___________________?

    A. A batch filter
    B. Not suitable, if the liquid is the main product
    C. Having prohibitively high maintenance cost
    D. Not suitable for wide range of materials under varying operating conditions of cake thickness
    and pressure