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 DescriptionMax Particle Size (IN)Bulk Density
(Lbs/Ft3)
Suggested
Type
Abrasive
Rating
Corrosive
Rating
Flow
Rating
Notes
Alfalfa Meal
-1/817ContinuousIIIIII1
Almonds (Whole)
-1/228-30ContinuousIIIII2
Alum, fine
-1/845-50Centrifugal, ContinuousIIII4
Alum, lumpy
+1/250-60Centrifugal, ContinuousIIII4
Alumina
-100M60-120ContinuousIIIII 
Aluminum Chips
-1/27-15ContinuousIIIII6
Aluminum Hydrate (Aluminum Hydroxide)
-1/213-18ContinuousIIIII 
Aluminum Ore (Bauxite)
-375-85Centrifugal, ContinuousIIIIII 
Aluminum Oxide (Alumina)
-100M60-120ContinuousIIIII5
Aluminum Silicate
-1/849ContinuousIIII 
Aluminum Sulfate (Alum)
-0.554ContinuousI*I 
Ammonium Chloride, Crystalline
-1/852ContinuousIIII 
Ammonium Nitrate
-1/845-62Continuous***4, 7, 8
Ammonium Sulfate
-0.540-58Continuous**III4
Andalsite (Aluminum Silicate)
-1/849ContinuousIIII 
Ashes, Coal, dry
-335-45ContinuousIIIIII9
Asphalt, Crushed
-1/245Centrifugal, ContinuousIIII1, 6, 9, 10
Bakelite (Powdered)
-100M30-40ContinuousIIIII 
Baking Powder
-100M41-55ContinuousIIII 
Barite
+1/2120-180ContinuousIIIIII 
Barley
-1/837-48CentrifugalIII7
Beans, Castor, whole
-1/236Centrifugal, ContinuousIII 
Beans, Navy
-1/248Centrifugal, ContinuousIII 
Bentonite
-100M50-60CentrifugalIIIII5
Bentonite, crude
+1/234-40CentrifugalIIIIII9
Bonemeal
-1/850-60CentrifugalIIIII 
Bones, crushed
-1/235-40Centrifugal, ContinuousIIIIII 
Bones, ground
-1/850Centrifugal, ContinuousIIIII 
Borax
-1/260CentrifugalIIIII 
Borax, fine
-1/850-60CentrifugalIIIII 
Bran
-1/810-20CentrifugalIIII1, 7
Brewers Grain, spent, dry
-1/214-30CentrifugalIIIII 
Brewers Grain, spent, wet
-1/255-60CentrifugalIIIIII 
Buckwheat
-1/437-42CentrifugalIII7
Carbon Black, fine
-100M4-6ContinuousIIIII4, 9
Carbon Black, pelleted
-1/820-25Continuous***4, 8, 9
Carborumdum*
-1/2100ContinuousIIIIII 
Cast Iron, chips
-1/2130-200Centrifugal, ContinuousIIIIII 
Cement, clinker
+1/275-80Centrifugal, ContinuousIIIIII 
Cement, portland (or aerated)
-100M75-85Centrifugal, ContinuousIIIII5
Chalk, crushed
+1/285-90Centrifugal, ContinuousIIIIII9
Chalk, ground
-100M70-75Centrifugal, ContinuousIIIIII5, 9
Charcoal
+1/218-25ContinuousIIIIII2
Cinders, blast furnace
+1/257Centrifugal, ContinuousIIIIIII 
Cinders, Coal
+1/240Centrifugal, ContinuousIIIIII 
Clover, seed
-1/848CentrifugalIII7
Coal, Anthracite
-1/252-60Centrifugal, ContinuousIIIIII7
Coal, pulverized
-100M32-35ContinuousIIIIII5, 7
Coal, sized
-1/250-54ContinuousIIIIII7
Cocoa, beans
-1/230-45Centrifugal, ContinuousIIII2
Cocoa, nibs
-1/235Centrifugal, ContinuousIIII 
Coffee, roasted bean
-1/222-26Centrifugal, ContinuousIII 
Coffee, green bean
-1/232-45Centrifugal, ContinuousIIII2
Coke, breeze
-1/425-35CentrifugalIIIIIII4, 6, 9
Coke, calcined
+1/235-45CentrifugalIIIIII 
Coke, loose
+1/223-32CentrifugalIIIIIII2, 6
Copra
+1/222-33Centrifugal, ContinuousIIII 
Copra, cake
+1/225-30Centrifugal, ContinuousIIII 
Copra, cake, ground
-1/840-45Centrifugal, ContinuousIIII 
Copra, meal
-1/840-45Centrifugal, ContinuousIIII 
Cork, granulated
-1/25-15ContinuousIIIII 
Cork, ground
-1/85-15ContinuousIIIII 
Corn, cracked
-1/240-50CentrifugalIIII 
Corn, germ
-1/821CentrifugalIIII 
Corn, grits
-1/840-45CentrifugalIIII 
Corn, meal
-1/832-40CentrifugalIIII 
Corn, seed
-1/445ContinuousIII2, 7
Corn, shelled
-1/445CentrifugalIII7
Corn, sugar
-1/831CentrifugalIIII 
Cottonseed, cake
+1/240-45CentrifugalIIII 
Cottonseed, dry, delinted
-1/422-40CentrifugalIIII 
Cottonseed, dry, undelinted
-1/418-25CentrifugalIIIII 
Cottonseed, hull
-1/812ContinuousIIIII1
Cottonseed, meal
-1/835-40CentrifugalIIII 
Cottonseed, meats
-1/840CentrifugalIIII 
Cracklings
-340-50CentrifugalIIIII 
Cullet
+1/280-120CentrifugalIIIIII 
Material DescriptionMax Particle Size (IN)Bulk Density
(Lbs/Ft3)
Suggested
Type
Abrasive
Rating
Corrosive
Rating
Flow
Rating
Notes
Dolomite (Calcium Magnesium Carbonate)
+1/280-100Centrifugal, ContinuousIIIII 
Ebonite
-1/265-70Centrifugal, ContinuousIIII 
Feldspar, ground
-100M65-75Centrifugal, ContinuousIIIIII 
Feldspar, powder
-1/8100-160ContinuousIIIII 
Flaxseed
-1/843-45CentrifugalIII7
Flaxseed Cake
+1/248-50CentrifugalIIII 
Flaxseed Meal
-1/825CentrifugalIIII 
Flour, Wheat
-100M30-46CentrifugalIIIII3, 7
Flue Dust, boiler, dry
-100M40-125ContinuousIIIIII5
Fluorspar (Fluorite)
-1/420-110Centrifugal, ContinuousIIIIII 
Fuller’s Earth, oil filter, burned
-1/840CentrifugalIIIIII 
Fuller’s Earth, oil filter, raw
-1/835-40CentrifugalIIIII 
Glass, batch
+1/280-100CentrifugalIIIIII 
Glue, ground
-1/840CentrifugalIIIII 
Glue, pearl
-1/240CentrifugalIII 
Grains, distillery, spent, dry (DDG)
LUMPS30CentrifugalIIII1
Granite, broken
+1/295-100ContinuousIIIIII 
Grass Seed
-1/810-32ContinuousIIII1, 7
Gypsum, calcined
-1/255-60Centrifugal, ContinuousIIIII 
Gypsum, calcined
-100M60-80Centrifugal, ContinuousIIIIII 
Gypsum, raw
-190-100Centrifugal, ContinuousIIIII 
Hops, spent, dry
LUMPS35CentrifugalIIIII 
Hops, spent, wet
LUMPS50-55CentrifugalIIIIII 
Ice, crushed
+1/235-45Centrifugal, Continuous*** 
Illmenite Ore
-1/8140Centrifugal, ContinuousIIIIII 
Lignite, air dried
+1/245-55Centrifugal, ContinuousIIII 
Lime, hydrated
-1/840ContinuousIIII5, 9
Lime, hydrated, pulverized
-200M32-40Centrifugal, ContinuousIIII5, 9
Lime, pebble, unslaked
+1/253-56Centrifugal, ContinuousIIIII 
Lime, unslaked
-1/860Centrifugal, ContinuousIIIII9
Limestone, agricultural
-1/868Centrifugal, ContinuousIIIII 
Limestone, crushed
+1/285-90ContinuousIIIII 
Limestone, dust
-100M55-95Centrifugal, ContinuousIIIIII5
Material DescriptionMax Particle Size (IN)Bulk Density
(Lbs/Ft3)
Suggested
Type
Abrasive
Rating
Corrosive
Rating
Flow
Rating
Notes
Maize, milo
-1/445-56CentrifugalIII7
Malt, dry, ground
-1/822CentrifugalIIII1, 7
Malt, dry, whole
-1/227-30CentrifugalIIII7
Malt, meal
-1/836-40CentrifugalIIII 
Malt, wet or green
-1/260-65CentrifugalIIIII 
Marble, crushed
-1/280-95ContinuousIIIIII 
Meat, ground
SCRAPS50-55CentrifugalIIIIII4, 6
Muriate of Potash
-1/877Centrifugal, ContinuousIIIIIIII 
Mustard Seed
-1/845CentrifugalIII7
Oats
-1/225-35CentrifugalIII7
Oats, rolled
-1/219-24CentrifugalIIII1, 7
Oxalic Acid, crystals
-1/860CentrifugalIIIII8.
Peanuts, shelled
-1/435-45ContinuousIIII2
Peas, dried
-1/245-50ContinuousIII2, 7
Phosphate , crushed
+1/275-85Centrifugal, ContinuousIIIII 
Phosphoric Acid (Phosphate Acid)
-100M60ContinuousIIII 
Pumice
-1/840-45ContinuousIIIIIII 
Rice Grits
-1/842-45CentrifugalIIII 
Rice, hulled or polished
-1/845-48CentrifugalIII 
Rice, rough
-1/832-36CentrifugalIIII7
Salt Cake (Sodium Sulfate)
-1/485Centrifugal, ContinuousIIIIIII8
Salt, dry coarse
-1/445-50Centrifugal, ContinuousIIIIIII8
Salt, dry fine
-1/870-80Centrifugal, ContinuousIIIIIII8
Sand, damp, bank
-1/8110-130CentrifugalIIIIIII 
Sand, dry silica
-1/890-100CentrifugalIIIII 
Sand, dry, bank
-1/890-110CentrifugalIIIIII 
Sand, foundry, prepared
-1/890CentrifugalIIIIIII 
Sand, foundry, shakeout
+1/290CentrifugalIIIIII 
Shale, crushed
-1/285-90CentrifugalIIIII 
Shavings, wood, dry
+1/28-15CentrifugalIIIII1, 6
Slag, furnace
-1/2160-180Centrifugal, ContinuousIIIIII 
Slag, furnace
+1/260-65ContinuousIIIIII 
Slate, crushed
-1/280-90CentrifugalIIIII 
Slate, ground
-1/882Centrifugal, ContinuousIIIII 
Soap, beads or granules
-1/415-35ContinuousIIII8.
Soap, chips
-1/215-25ContinuousIIII8.
Soda Ash, heavy
-1/855-65Centrifugal, ContinuousIIIII 
Soda Ash, light
100M20-35ContinuousIIIII1, 5
Soybean Flakes, raw
-1/420-26CentrifugalIIII1
Soybean Meal, cold
-1/840CentrifugalIIII 
Soybean Meal, hot
-1/840CentrifugalIIIIII 
Soybean, cake
+1/240-43CentrifugalIIII 
Soybeans, cracked
-1/430-40CentrifugalIIIII7
Soybeans, whole
-1/445-50CentrifugalIIIII7
Steel, ships, crushed
+1/2100-150ContinuousIIIIII 
Sugar Beet, plup, wet
-1/225-45ContinuousI*II9
Sugar Beet, pulp, dry
-1/212-15ContinuousII*II4
Sugar, granulated
-1/850-55Centrifugal, ContinuousIIII2, 3
Sugar, powdered
-200M50-60Centrifugal, Continuous***4
Sugar, raw, cane
-1/855-65CentrifugalIIIII9
Tanbark, ground
*55Centrifugal***4
Tung Nut Meats, crushed
+1/225ContinuousIIII 
Walnuts Shells, crushed
-1/835-40ContinuousIIIII 
Wheat
-1/245-48CentrifugalIII7
Wheat, cracked
-1/835-45CentrifugalIII7
Wheat, germ
-1/818-28CentrifugalIII 
Wood Chips
+1/210-30CentrifugalIIIII1, 6
Zinc Oxide, heavy
-200M30-35ContinuousIIIII5, 9
Zinc Oxide, light
-200M10-15ContinuousIIIII1, 5, 9
Zinc, concentrate residue
-1/875-80ContinuousIIIIII 

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.

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