Conveyors - Maximum Inclination vs. Product

Maximum conveyor inclination slopes for typical products.

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conveyor slopes

Maximum conveyor slopes for various materials:

Conveyors - Maximum Inclination vs. Type of Product
Material	Maximum Slope (degrees)
Acid phosphate	13
Alum	22
Alumina - sized or briquette	10
Aluminum sulphate	17
Anthracite coal	16
Ammonium chloride	10
Ammonium nitrate	23
Asbestos ore rock	18
Asbestos shred	30
Ashes - wet	18
Ashes - dry	16
Asphalt	30
Bagasse	30
Bark, wood	27
Barley	12
Bauxite - ground dried	23
Bauxite - mine run	17
Beans	7
Beets, whole	20
Borax	20
Bran	12
Brewers grain, spent	27
Brick	27
Calcium carbide	18
Carbon black, pelleted	5
Carborundum 75 mm	15
Cashew nuts	22
Cement - Clinker	20
Cement - loose	22
Cement - Portland	20
Chalk, lumpy	15
Chalk < 100 mesh	28
Charcoal	22
Chrome ore	17
Cinders	23
Clay - dry lump loose	21
Clay - ground	22
Clay - gray granular	20
Coal - bituminous slake	20
Coal - run of mine	18
Coke - screened	18
Coke - breeze	20
Coke - run of oven	18
Concrete - 6 inch slump (how wet the concrete is - based on the "slump test")	12
Concrete - 4 inch slump	20
Concrete - 2 inch slope	24 - 26
Coal - soft lumps > 4 inches	15
Coal - soft lumps < 4 inches	16
Coal - unsized	18
Coal - soft fine	20 - 22
Copper sulphate	17
Corn, ear	18
Corn, shelled	10
Cornmeal	22
Cottonseed cake	20
Dolomite	20
Earth - loose	20
Earth - sluggish	22
Earth - moist	18 - 20
Fertilizer - artifical	12 - 15
Fieldspar - crushed	17
Flour	15 - 18
Fluorspar	20
Foundry sand	20
Furnace slag - granulated	13
Grain - except oats	14
Grain, distillery spent dry	15
Granite, 75 mm broken lumps	18
Graphite, flakes	15
Gravel - sized and washed	12
Gravel - unsized	18 - 20
Gypsum - broken	18
Gypsum - ground	27
Gypsum - powder	23
Iron ore - limonite	28
Iron ore - soft	21
Kaolin - pulverized	32
Lead ores	15
Lead oxide	20
Lignite, air dried	18
Lime - burned pebble	15
Lime - burned pulverized	17
Lime - fine	29
Limestone - pulverized	34
Limestone - mixed sized	21
Limestone - coarse sized	12
Lineseed cake	15
Lineseed meal	20
Loam, moist	18 - 20
Logs - no bark	10
Magnesium chloride	23
Magnesium sulphate	15
Marble, crushed < 12 mm	15
Mica - ground	23
Molybdenite ore - powdered	25
Manganese	24
Nickel-cobalt	20
Oats	10
Ore - larger than 4 inches	18
Ore - less than 4 inches	20
Packages - wrapped in paper on smooth belts	16
Packages - wrapped in paper on ribflex belts or similar	25 - 45
Peanuts in shells or shelled	8
Peas dried	8
Peat	16
Phosphate	14
Phosphate - pulverized	28
Potash ore	15
Potatoes	12
Quartz	15
Rice	8
Rock crushed	18
Rubber pelleted	22
Rye	8
Salt, fine	15 - 18
Salt, rock	18 - 20
Sand - dry	16
Sand - damp moist	20
Sand - uniformly sized foundry high-quality silica sand or lake	24
Sawdust	22
Shale	26
Sinter	15
Slag, furnace	10 - 15
Slate	18
Soap chips	18
Soda ash, briquettes	7
Sodium nitrate	11
Sodium phosphate	16
Soybeans, cracked	18
Soybeans, whole	14
Starch	12
Steel trimmings	18
Stone - crushed	18
Sugar, raw cane	22
Sugar, refined	20
Sulfur - powder	21
Sulpate - powder	21
Stones - larger than 4 inches	15
Stones - less than 4 inches	16
Talc, powder	12
Titanium ore	18
Traprock	18
Vermiculite, expanded	23
Vermiculite, ore	20
Walnut shells, crushed	20
Wheat	12
Whole grain	15
Woodchips	27
Zinc ore	22 - 25

Inclination or Slope Chart

Inclination or Slope Calculator

Use this chart to estimate the inclination or slope angle of a conveyor. Measure the horizontal run and the vertical rise of the conveyor. Draw the lines in the chart to estimate inclination.

Inclination slope degrees chart