Page 387 - Chemical Process Equipment - Selection and Design

350 DISINTEGRATION, AGGLOMERATION, AND SIZE SEPARATION OF PARTICULATE SOLIDS
TABLE 12.9. Performance of Impact Disintegrators
(a) Hammer Mills
tonsfhr Approximate Screen Analysis of Product, Reducing 3 in. Limestone

Limestone, Limestone, Burnt lime, Passing through Mesh Stated
Grate
in. Slots fin. Slots fin. slots Spacing (in.) in. 10 mesh 50 mesh 100 mesh
1 -
0 Swing-sledge 2-4 4-7 7-9 4 99.8% 85% 50 % 40%
1 Swing-sledge 6-10 12-15 18-20 1 - 99 70 60
8
2 Swing-sledge 12-15 20-30 60-70
1.
00 Hinged-hammer pulverizer 1-2 2-4 4-6 gin. slots means that the grating space was fin.
Dimensions and Speeds
Inside
Feed Pulley Approx.
Length Width Diameter Width Opening Speed (rpm) HP
0 Swing-sledge 4ft 3in. 4ft 1 in. 24 in. 10 in 13 x 11 in. 1200-1500 12
1 Swing-sledge 5ftlin. 5ft8in. 30 in. 20 in. 17 X 20 in. 1000-1300 40
2 Swing-sledge 6ft 7ft 36 in. 30 in. 20 x 30 in. 1000-1200 75
00 Hinged-hammer pulverizer 2ft 5in. 3R 16in. 11 in. 12X12in. 1200-3600 5-20
0-24 in. Hinged hammer pulverizer 3ft7in. 5ft 8in. 24 in. 24 in. 12; x 24 in. 1000-1200 15-20

(Data supplied by Sturtevant Mill Co., Boston, MA).
(b) High Speed "Mikro-Pulverizer"

No.1 No. 2 No. 3 NO. 4
Material I Mesh FinenessI (5 HP) I (15 HP) 1 (40 HP) I (75 HP)
Aluminum Hydrate 99.8% through 200 600 1,800 4.800 9,000
Ball Clay 98% through 325 600 1.800 4.800 9.000
Calcium Arsenate 99% through 300 1.250 3.750 10.000 18.750 Unit Speed HP
Bituminous Coal 70% through 200 500 1,500 4.000 7.500
Carbon Black 99.99% fhrough 325 450 1,350 3.600 6.750 NO. 1 9.600 RPM 1%
Cellulose Acetate (Pulp) 94% through 40 200 600 1,600 3.000 No.2 6.900RPM 4
No.3 4.600RPM 12
Chrome Yellow 99.9% through 200 1,250 3,750 10.000 18.750 No.4 3.450RPM 18
Dry Color Slurry Smooth Slurry 800 2,400 6.400 12.000
Face Powder Mixture Good Blend 600 1,800 4.800 9,000
Gypsum, Raw 88% through 100 1,650 5,000 13.200 24,750
Iron Blue 95% through 325 750 2,250 6,000 11,250
Kaolin 99.9% through 325 750 2.250 6.000 11,250
Malted Milk 99% through 20 1.875 5.000 9.400
Molding Compound 90% through 16 2,250 6.000 11,250
Soap Powder 96% through 20 4,500 12,000 22.500
Soybean Flake 94% through 100 900 2.400 4,500
Sugar 99% through 100 1.800 4.800 9,000
Tile Clay Body 100% through 16 1.650 5.000 13.200 24,750
Titanium Dioxide 99.8% through 325 600 1,800 4.800 9,000
White Lead 99.99% through 325 1,000 3,000 8.000 15.000
Zinc Oxide 99.9% through 325 600 1.800 4.800 9.000
I I I

A~prox
Mdl Grmdinp Medim sclld AV9
Malertsl olrmsiar TYP Rar Feed Rae Particle
sue C)
Tllanium Ooxde 30' steam 4000lbrlhr 2250 lbslhr kss than 1
Sulfur 24. all 1000Cfm 1300 Ibslhr 3-4
Talc (varies) 30- Stem dd001bSihr 2000Ibslhr 2
30"
Iron Oxda Ptgmnl 30 - slum 4MMlbS/h lOOOIbs/hr 2-3
Cfyolih steam 40001bs/hr 1WOlbslhr 3
Eaves 30' dean UXMlhlhr 18WIbs/hr 3-4
Flrlfer'sEarlh 20" SlGim 1200 Mlhr 600 Ibs/hr 3-45 lop
hlhncb Coal 20- 1v ICIWCfm 100Olbslhr 56
DOT (50%) 24. 8U lOmCfm 1400Ibslhr 3-4
RocamoPenedtin e- air 1WlClm 25Ibr/h1 5 2010p
(Sturtevant Mill Co.).