KWS Manufacturing

Bucket Elevator Applications & Materials

This table is split into multiple parts and separated alphabetically. "Note" explanations are located at the bottom of this table.

Material Description Max Particle Size (IN) Bulk Density
(Lbs/Ft3)
Suggested
Type
Abrasive
Rating
Corrosive
Rating
Flow
Rating
Notes
Alfalfa Meal
-1/8 17 Continuous II I III 1
Almonds (Whole)
-1/2 28-30 Continuous II I II 2
Alum, fine
-1/8 45-50 Centrifugal, Continuous I I II 4
Alum, lumpy
+1/2 50-60 Centrifugal, Continuous I I II 4
Alumina
-100M 60-120 Continuous III I I  
Aluminum Chips
-1/2 7-15 Continuous I I III 6
Aluminum Hydrate (Aluminum Hydroxide)
-1/2 13-18 Continuous I I III  
Aluminum Ore (Bauxite)
-3 75-85 Centrifugal, Continuous III I II  
Aluminum Oxide (Alumina)
-100M 60-120 Continuous III I I 5
Aluminum Silicate
-1/8 49 Continuous I I II  
Aluminum Sulfate (Alum)
-0.5 54 Continuous I * I  
Ammonium Chloride, Crystalline
-1/8 52 Continuous I I II  
Ammonium Nitrate
-1/8 45-62 Continuous * * * 4, 7, 8
Ammonium Sulfate
-0.5 40-58 Continuous * * III 4
Andalsite (Aluminum Silicate)
-1/8 49 Continuous I I II  
Ashes, Coal, dry
-3 35-45 Continuous II I III 9
Asphalt, Crushed
-1/2 45 Centrifugal, Continuous I I II 1, 6, 9, 10
Bakelite (Powdered)
-100M 30-40 Continuous I I III  
Baking Powder
-100M 41-55 Continuous I I II  
Barite
+1/2 120-180 Continuous III I II  
Barley
-1/8 37-48 Centrifugal I I I 7
Beans, Castor, whole
-1/2 36 Centrifugal, Continuous I I I  
Beans, Navy
-1/2 48 Centrifugal, Continuous I I I  
Bentonite
-100M 50-60 Centrifugal II I II 5
Bentonite, crude
+1/2 34-40 Centrifugal II I III 9
Bonemeal
-1/8 50-60 Centrifugal II I II  
Bones, crushed
-1/2 35-40 Centrifugal, Continuous II I III  
Bones, ground
-1/8 50 Centrifugal, Continuous II I II  
Borax
-1/2 60 Centrifugal II I II  
Borax, fine
-1/8 50-60 Centrifugal II I II  
Bran
-1/8 10-20 Centrifugal I I II 1, 7
Brewers Grain, spent, dry
-1/2 14-30 Centrifugal I I III  
Brewers Grain, spent, wet
-1/2 55-60 Centrifugal I II III  
Buckwheat
-1/4 37-42 Centrifugal I I I 7
Carbon Black, fine
-100M 4-6 Continuous I I III 4, 9
Carbon Black, pelleted
-1/8 20-25 Continuous * * * 4, 8, 9
Carborumdum*
-1/2 100 Continuous III I II  
Cast Iron, chips
-1/2 130-200 Centrifugal, Continuous II I III  
Cement, clinker
+1/2 75-80 Centrifugal, Continuous III I II  
Cement, portland (or aerated)
-100M 75-85 Centrifugal, Continuous II I II 5
Chalk, crushed
+1/2 85-90 Centrifugal, Continuous II I III 9
Chalk, ground
-100M 70-75 Centrifugal, Continuous II I III 5, 9
Charcoal
+1/2 18-25 Continuous II I III 2
Cinders, blast furnace
+1/2 57 Centrifugal, Continuous III I III  
Cinders, Coal
+1/2 40 Centrifugal, Continuous III I II  
Clover, seed
-1/8 48 Centrifugal I I I 7
Coal, Anthracite
-1/2 52-60 Centrifugal, Continuous II II II 7
Coal, pulverized
-100M 32-35 Continuous I II III 5, 7
Coal, sized
-1/2 50-54 Continuous II II II 7
Cocoa, beans
-1/2 30-45 Centrifugal, Continuous I I II 2
Cocoa, nibs
-1/2 35 Centrifugal, Continuous I I II  
Coffee, roasted bean
-1/2 22-26 Centrifugal, Continuous I I I  
Coffee, green bean
-1/2 32-45 Centrifugal, Continuous I I II 2
Coke, breeze
-1/4 25-35 Centrifugal III I III 4, 6, 9
Coke, calcined
+1/2 35-45 Centrifugal III I II  
Coke, loose
+1/2 23-32 Centrifugal III I III 2, 6
Copra
+1/2 22-33 Centrifugal, Continuous I I II  
Copra, cake
+1/2 25-30 Centrifugal, Continuous I I II  
Copra, cake, ground
-1/8 40-45 Centrifugal, Continuous I I II  
Copra, meal
-1/8 40-45 Centrifugal, Continuous I I II  
Cork, granulated
-1/2 5-15 Continuous I I III  
Cork, ground
-1/8 5-15 Continuous I I III  
Corn, cracked
-1/2 40-50 Centrifugal I I II  
Corn, germ
-1/8 21 Centrifugal I I II  
Corn, grits
-1/8 40-45 Centrifugal I I II  
Corn, meal
-1/8 32-40 Centrifugal I I II  
Corn, seed
-1/4 45 Continuous I I I 2, 7
Corn, shelled
-1/4 45 Centrifugal I I I 7
Corn, sugar
-1/8 31 Centrifugal I I II  
Cottonseed, cake
+1/2 40-45 Centrifugal I I II  
Cottonseed, dry, delinted
-1/4 22-40 Centrifugal I I II  
Cottonseed, dry, undelinted
-1/4 18-25 Centrifugal I I III  
Cottonseed, hull
-1/8 12 Continuous I I III 1
Cottonseed, meal
-1/8 35-40 Centrifugal I I II  
Cottonseed, meats
-1/8 40 Centrifugal I I II  
Cracklings
-3 40-50 Centrifugal I I III  
Cullet
+1/2 80-120 Centrifugal III I II  
Material Description Max Particle Size (IN) Bulk Density
(Lbs/Ft3)
Suggested
Type
Abrasive
Rating
Corrosive
Rating
Flow
Rating
Notes
Dolomite (Calcium Magnesium Carbonate)
+1/2 80-100 Centrifugal, Continuous II I II  
Ebonite
-1/2 65-70 Centrifugal, Continuous I I II  
Feldspar, ground
-100M 65-75 Centrifugal, Continuous II I III  
Feldspar, powder
-1/8 100-160 Continuous II I II  
Flaxseed
-1/8 43-45 Centrifugal I I I 7
Flaxseed Cake
+1/2 48-50 Centrifugal I I II  
Flaxseed Meal
-1/8 25 Centrifugal I I II  
Flour, Wheat
-100M 30-46 Centrifugal I I III 3, 7
Flue Dust, boiler, dry
-100M 40-125 Continuous III I II 5
Fluorspar (Fluorite)
-1/4 20-110 Centrifugal, Continuous II I III  
Fuller’s Earth, oil filter, burned
-1/8 40 Centrifugal III I II  
Fuller’s Earth, oil filter, raw
-1/8 35-40 Centrifugal II I II  
Glass, batch
+1/2 80-100 Centrifugal III I II  
Glue, ground
-1/8 40 Centrifugal II I II  
Glue, pearl
-1/2 40 Centrifugal I I I  
Grains, distillery, spent, dry (DDG)
LUMPS 30 Centrifugal I I II 1
Granite, broken
+1/2 95-100 Continuous III I II  
Grass Seed
-1/8 10-32 Continuous I I II 1, 7
Gypsum, calcined
-1/2 55-60 Centrifugal, Continuous II I II  
Gypsum, calcined
-100M 60-80 Centrifugal, Continuous II I III  
Gypsum, raw
-1 90-100 Centrifugal, Continuous II I II  
Hops, spent, dry
LUMPS 35 Centrifugal I I III  
Hops, spent, wet
LUMPS 50-55 Centrifugal I II III  
Ice, crushed
+1/2 35-45 Centrifugal, Continuous * * *  
Illmenite Ore
-1/8 140 Centrifugal, Continuous III I II  
Lignite, air dried
+1/2 45-55 Centrifugal, Continuous I I II  
Lime, hydrated
-1/8 40 Continuous I I II 5, 9
Lime, hydrated, pulverized
-200M 32-40 Centrifugal, Continuous I I II 5, 9
Lime, pebble, unslaked
+1/2 53-56 Centrifugal, Continuous I I III  
Lime, unslaked
-1/8 60 Centrifugal, Continuous I I III 9
Limestone, agricultural
-1/8 68 Centrifugal, Continuous II I II  
Limestone, crushed
+1/2 85-90 Continuous II I II  
Limestone, dust
-100M 55-95 Centrifugal, Continuous II I III 5
Material Description Max Particle Size (IN) Bulk Density
(Lbs/Ft3)
Suggested
Type
Abrasive
Rating
Corrosive
Rating
Flow
Rating
Notes
Maize, milo
-1/4 45-56 Centrifugal I I I 7
Malt, dry, ground
-1/8 22 Centrifugal I I II 1, 7
Malt, dry, whole
-1/2 27-30 Centrifugal I I II 7
Malt, meal
-1/8 36-40 Centrifugal I I II  
Malt, wet or green
-1/2 60-65 Centrifugal I I III  
Marble, crushed
-1/2 80-95 Continuous III I II  
Meat, ground
SCRAPS 50-55 Centrifugal II I III 4, 6
Muriate of Potash
-1/8 77 Centrifugal, Continuous III III II  
Mustard Seed
-1/8 45 Centrifugal I I I 7
Oats
-1/2 25-35 Centrifugal I I I 7
Oats, rolled
-1/2 19-24 Centrifugal I I II 1, 7
Oxalic Acid, crystals
-1/8 60 Centrifugal I I III 8.
Peanuts, shelled
-1/4 35-45 Continuous I I II 2
Peas, dried
-1/2 45-50 Continuous I I I 2, 7
Phosphate , crushed
+1/2 75-85 Centrifugal, Continuous II I II  
Phosphoric Acid (Phosphate Acid)
-100M 60 Continuous I I II  
Pumice
-1/8 40-45 Continuous III I III  
Rice Grits
-1/8 42-45 Centrifugal I I II  
Rice, hulled or polished
-1/8 45-48 Centrifugal I I I  
Rice, rough
-1/8 32-36 Centrifugal I I II 7
Salt Cake (Sodium Sulfate)
-1/4 85 Centrifugal, Continuous II III II 8
Salt, dry coarse
-1/4 45-50 Centrifugal, Continuous II III II 8
Salt, dry fine
-1/8 70-80 Centrifugal, Continuous II III II 8
Sand, damp, bank
-1/8 110-130 Centrifugal III I III  
Sand, dry silica
-1/8 90-100 Centrifugal III I I  
Sand, dry, bank
-1/8 90-110 Centrifugal III I II  
Sand, foundry, prepared
-1/8 90 Centrifugal III I III  
Sand, foundry, shakeout
+1/2 90 Centrifugal III I II  
Shale, crushed
-1/2 85-90 Centrifugal II I II  
Shavings, wood, dry
+1/2 8-15 Centrifugal I I III 1, 6
Slag, furnace
-1/2 160-180 Centrifugal, Continuous III I II  
Slag, furnace
+1/2 60-65 Continuous III I II  
Slate, crushed
-1/2 80-90 Centrifugal II I II  
Slate, ground
-1/8 82 Centrifugal, Continuous II I II  
Soap, beads or granules
-1/4 15-35 Continuous I I II 8.
Soap, chips
-1/2 15-25 Continuous I I II 8.
Soda Ash, heavy
-1/8 55-65 Centrifugal, Continuous II I II  
Soda Ash, light
100M 20-35 Continuous II I II 1, 5
Soybean Flakes, raw
-1/4 20-26 Centrifugal I I II 1
Soybean Meal, cold
-1/8 40 Centrifugal I I II  
Soybean Meal, hot
-1/8 40 Centrifugal I III II  
Soybean, cake
+1/2 40-43 Centrifugal I I II  
Soybeans, cracked
-1/4 30-40 Centrifugal II I II 7
Soybeans, whole
-1/4 45-50 Centrifugal III I I 7
Steel, ships, crushed
+1/2 100-150 Continuous III I II  
Sugar Beet, plup, wet
-1/2 25-45 Continuous I * II 9
Sugar Beet, pulp, dry
-1/2 12-15 Continuous II * II 4
Sugar, granulated
-1/8 50-55 Centrifugal, Continuous I I II 2, 3
Sugar, powdered
-200M 50-60 Centrifugal, Continuous * * * 4
Sugar, raw, cane
-1/8 55-65 Centrifugal I I III 9
Tanbark, ground
* 55 Centrifugal * * * 4
Tung Nut Meats, crushed
+1/2 25 Continuous I I II  
Walnuts Shells, crushed
-1/8 35-40 Continuous II I II  
Wheat
-1/2 45-48 Centrifugal I I I 7
Wheat, cracked
-1/8 35-45 Centrifugal I I I 7
Wheat, germ
-1/8 18-28 Centrifugal I I I  
Wood Chips
+1/2 10-30 Centrifugal I I III 1, 6
Zinc Oxide, heavy
-200M 30-35 Continuous I I III 5, 9
Zinc Oxide, light
-200M 10-15 Continuous I I III 1, 5, 9
Zinc, concentrate residue
-1/8 75-80 Continuous III I II  

Notes

  1. Exceptionally light or fluffy.°
  2. Usage or Value affected by material degradation
  3. Usage or Value affected by contamination.
  4. Consult KWS Manufacturing Sales Department.
  5. Fluidizes easily.
  6. Fibrous material which tends to mat.
  7. Contains explosive dust.
  8. Absorbs moisture.
  9. Tends to pack under pressure.
  10. Emits toxic fumes or dust.