Bond crushing law

A calls for relatively less energy for the smaller product particles than does the Rittinger's law
B is less realistic in estimating the power requirements of commercial crushers
C states that the work required to form particle of any size from very large feed is proportional to the square root of the volume to surface ratio of the product
D states that the work required for the crushing is proportional to the new surface created

Correct Answer: calls for relatively less energy for the smaller product particles than does the Rittinger's law

Bissoy MCQ
#Metallurgical Engineering #Mineral Dressing In Metallurgy

Related Questions

The constants (Kb, Kr and Kk) used in the laws of crushing (i.e., Bond's law, Rittinger's law and Kick's law) depend upon the
A Feed material
B Type of crushing machine
C Both A & B
D Neither A nor B
For crushing of solids, the Rittinger's law states that the work required for crushing is proportional to
A The new surface created
B The size reduction ratio
C The change in volume due to crushing
D None of these
A bond gets matured in 10 years . invested TK. 42,000 in this bond and received Tk. 105000 once the bond matured . If the bond was under simple interest . then what was the rate of interest per annum?
A 10%
B 12.5%
C 15%
D 7.5%
What is the usual value of angle of nip for crushing of ordinary rock in smooth steel crushing rolls?
A 16°
B 32°
C 40°
D 46°
Choke crushing (in case of a Jaw crusher) compared to free crushing
A Results in increased capacity
B Consumes less power
C Consumes more power
D Both A and C
The work index in Bond's law for crushing of solids has the following dimensions
A No units (dimensionless)
B kWh/ton
C kW/ton
D $${\text{kWh}}.{{\text{m}}^{\frac{1}{2}}}/{\text{ton}}$$
Which one of the following species has the highest bond order, shortest bond length and maximum bond strength?
A O2
B O+2
C O-2
D O-22
Rittinger's crushing law states that
A Work required to form a particle of any size is proportional to the square of the surface to volume ratio of the product
B Work required to form a particle of a particular size is proportional to the square root of the surface to volume ratio of the product
C Work required in crushing is proportional to the new surface created
D For a given machine and feed, crushing efficiency is dependent on the size of the feed & product
If Taka 4,500 was invested in bonds of a corporation when the price per bond was Tk. 9.00 and Taka 3,000 was invested in bonds of another corporation when the price was Tk. 10.00 per bond, what was the average price of bonds purchased?
A Tk. 9.625
B Tk. 9.50
C Tk. 9.40
D Tk. 9.375
What will be the price of the bond if, it is a bond with one year to maturity, paying a 4% coupon semi-annually on a per value of tk. 100 and a Y(TM) of 6%?
A 101.0
B 100.0
C 111.0
D 112.0

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