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Conveyors - Maximum Inclination vs. Product

Maximum conveyor inclination slopes for typical products.

conveyor slopes

Maximum conveyor slopes for various materials:

Conveyors - Maximum Inclination vs. Type of Product
MaterialMaximum 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

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

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