Mechanical Processes Flashcards

1
Q

Void Ratio

A

e = Vv (volume of voids)/Vs (volume of solids)

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2
Q

Porosity

A

n = Vv (Volume of voids)/ Vm(volume of material)

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3
Q

Horizontal Hammermil

A

central rotor with pinned radial hammers free to swing on pins, feed is gravity dropped onto hammer, discharge grate below which determines size of material

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4
Q

Vertical Hammermil

A

Vertical shaft, material moves by gravity along sides

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5
Q

Shear Shredder

A

used to cut large objects like tires

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6
Q

Shredder Issues

A

substantial wear & tear
noise
explosions
disease transmission

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