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The Sixth Edition of the CEMA Belt Book Belt Conveyors for ,, THE 6TH EDITION OF BELT CONVEYORS FOR BULK MATERIALS Based on the input from end users, the conveyor industry and academia the Committee set 3 major goals for the new edition and the conversion of the book into metric units and other languages is under consideration for a future edition 1 Provide a power calculation method that is capable of ,Belt Conveyors for Bulk Materials Calculations by CEMA 5 ,, The angle of surcharge of a material is the angle to the horizontal which the surface of the material assumes while the material is at rest on a moving conveyor beltThis angle usually is 5 degrees to 15 degrees less than the angle of repose, though in some materials it may be as much as 20 degrees lessIndustrial Conveyor Systems for Transporting Bulk Materials, Feb 21, 2018· Types of Industrial Conveyor Systems for Transporting Bulk Materials If you visit almost any mine or rock quarry in the world you will likely find a conveyor sy s tem integrated into the ,SECTION 2 loading the belt, CONvEyOrS FlAT AND TrOUghED Flat belts Many bulk materials can be carried on flat belts Flat belts are particularly com-mon for materials with a steep angle of repose, the angle that a freely formed pile of material will make Materials with angles of repose above 30 degrees are ma-terials suitable for flat belts and range fromBelt Conveyors for Bulk Materials, 89 Belt Tension Calculations W b =weight of belt in pounds per foot of belt length When the exact weight of the belt is not known, use average estimated belt weight (see Table 6-1) W m =weight of material, lbs per foot of belt length: Three multiplying factors, K t , K x , and K y , are used in calculations of three of the components of the effective belt ,.