Mechanical Operations
Arrange the following size reduction equipment in the decreasing order of the average particle size produced by each of them.

Fluid energy mill, Jaw crusher, Ball mill
Ball mill, Jaw crusher, Fluid energy mill
Fluid energy mill, Ball mill, Jaw crusher
Jaw crusher, Ball mill, Fluid energy mill

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Mechanical Operations
Reciprocating screens are normally inclined at an angle of 5° with the horizontal and employ gyratory motion at feed end & reciprocating motion at the discharge end. They are not suitable for the screening of the

Dry chemicals
Powdered food & granular materials
Light metal powder down upto 4 meshsize
Heavy tonnages of rocks or gravel

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