Page 107 - Chemical Process Equipment - Selection and Design

5.3. MECHANICAL CONVEYORS AND ELEVATORS 7
TABLE 5.3-(confinued) TABLE 5.4(a)-( continued)

Lead oxides 60-150
Lime, tin. mar 60-65 43 23
Lime, hydrated, f in. max 40 40 21
Lime, hydrated, pulverized 32-40 42 22
Limestone, crushed 85-90 38 18
Limestone dust 80-85 20
Lithopone 45-50
Magnesium chloride 33
Magnesium sulfate 70
Milk, dry powder 36
Phosphate, triple super, fertilizer 50-55 45 30
Phosphate rock, pulverized 60 40 25
Polystyrene beads 40 (b) Characteristics of Some Materials (A Selection From the
Potassium nitrate 76 Original Table)
-
Rubber, pelletized 50-55 35 22 -
Salt, common, coarse 40-55
Salt, dry, fine 70-80 25 11 Eorae-
Salt cake, dry, coarse 85 36 21 €E&
Salt cake, dry, pulverized 60-85 "E"'
-
Saltpeter 80 -
Sand, bank, damp 100-130 45 20-22 Alfalfa meal. ........................ .4
Sand, bank, dry 90-110 35 16-18 Alum, lumpy.. ...................... 1.6
Alum, pulverized. ...................
.8
Sawdust 10-13 36 22 *Alumina ............................ 2.0
Shale, crushed 85-90 39 22 Aluminum, hydrate. ................. 15-20
1
Soap chips 15-26 30 18 Ammonium sulphate.. ............... 52 ....
1.0
Askh. studded.. ................. 20-25
Soap powder 20-25 'Asbea. dry.. ........................ 55-40 2.0
Soda ash briquetts 50 22 7 Aaphalt. crushed.. ...................
.K
Soda ash, heavy 55-65 32 19 Bakelite, powderad.. ................. 1.4
Soda ash, light 20-35 37 22 Bakhr powder.. .................... .6
Barley.. ............................
Sodium bicarbonate 41 42 23 .4
Sodium nitrate 70-80 24 11 1.8
Starch 25-50 24 12 .5
.4
Sugar, granulated 50-55 1.0
Sugar, powdered 50-60 20
Trisodium phosphate, pulverized 50 40 25 1.7
Wood chips 10-30 27 1.7
1.7
Zinc oxide, heavy 30-35 1.7
Zinc oxide, light 10-15 .7
.8
A
-
Other tables of these properties appear in ,these publications: -
'1. Conveyor E(quipment Manufacturers Association, Belt Conveyors for
Bulk Materials, 1966, pp. 25-33.
2. Stephens-Adamson Mfg. Co. Catalog 66, 1954, pp. 634-636.
3. FNIC Corporation Material Handling Equipment Division Catalog 100, [c) Factor Sin the Formula for Power P
1983, pp. 8.27-8.35.
4. Perry's Chemical Engineers ffandbook, 1984, p. 7.5.
21 33 50
33 54 80
54 96
TABLE 5.4. Sizing Data for Screw Conveyorsa
(a) Diameter [rpm and cuft/hr) I
(d) Limits of Horsepower and Torque

Diameter Diameter Maximum Maximum
of of I Hors;ywer Torque
Conveyor, Coupling. I& Ca acityin Pounds
Inches Inches 100 R.P.M.

"Example 5.3 utilizes these data.
(Stephens-Adarnson Co. Catalog, 1954, p. 66).