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NL4500G4 TRIDENT
www.New-Leader.com
(800) 363-1771
313974-AA-B
Header
SGN
Size Grade Number
View each column for percentage
• Column A (120) = 0 material
• Column B (170) = 0 material
• Column C (240) = 5% of 240 equals 12
• Column D (340) = 90% of 340 equals 306
• Column E (400>) = 5% of 400 equals 20
• Total: 12+306+20 = 338 as average SGN
Figure 7
7. Figure 7 - Based on column headings and percent in
each fi eld, calculate overall SGN of the sample.
Using the above crush strength example of 3.5 and average SGN size of 338, we can now use the chart to determine
our maximum spread width. In this case a maximum spinner speed of 650-700 RPM will produce a spread width of
85’ to 100’ depending on spinner height.
Granule
Mesh
Crush
Strength
Maximum
Spinner
RPM
Flotation
Machine
(Spinner Height
52”)
Spread Width ft(m)
Post Machine
(Spinner Height 72”)
Spread Width ft(m)
320-400
1
600
80-85(24-26)
90-95(27-29)
3
650-700
85-90(26-27)
95-100(29-30)
6
750-800
90-95(27-29)
100-105(30-32)
8
850-900
95-100(29-30)
105-110(32-33)
Spread Pattern
