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GRADATIONS

gradations

OPEN CIRCUIT:

  • Throughput range varies with rotor speed.
  • Higher rotor speed = lower throughput.

CLOSED CIRCUIT:

  • Throughput range varies with rotor speed and toughness of material (how easy does material shatter?).
  • Typically, a low LA abraision number means the material is difficult to shatter. In these cases, rotor speed is increased and return load is higher.

The throughput information is based on actual experience. Materials vary in abrasiveness, toughness, and quality. Capacity and output will vary with the material to be crushed and could be outside of the stated ranges.

Gradation Comparison
Auto-balance impact vs. 4-Shoe table against anvils

SIEVE

SIZE

Feed - % Retained

Output - % Retained

ABI20%

Shoe/Anvil

ABI

Shoe/Anvil

2 0 0 0 0
1-1/2 0 3 0 0
1 21 25 6 12
7/8 9 8 4 3
3/4 11 13 10 11
5/8 15 17 9 9
1/2 15 14 12 13
3/8 10 8 11 10
#4 14 11 22 20
#10 2 1 13 11
#20 1 0 5 5
#200 2 1 6 5
#200- 0 0 2 1