Listing of international, European and national standards relating to belt conveyors. Part 1.

The following is a listing of the principal international and national standards relating to belt conveyors. It is not claimed to be exhaustive.

International Organisation for Standardisation (ISO)

• ISO 10247:1990 Conveyor belts Characteristics of covers Classification.
• ISO 1120:2002 Conveyor belts Determination of strength of mechanical fastenings ± Static test method.
• ISO 14890:2003 Conveyor belts Specification for rubber or plastics covered conveyor belts of textile construction for general use.
• ISO 15236-1:2005 Steel cord conveyor belts Part 1: Design, dimensions and mechanical requirements for conveyor belts for general use.
• ISO 15236-2:2004 Steel cord conveyor belts Part 2: Preferred belt types.
• ISO 15236-4:2004 Steel cord conveyor belts Part 4: Vulcanised belt joints
• ISO 1535:1975 Continuous mechanical handling equipment for loose bulk materials Troughed belt conveyors (other than portable conveyors) Belts.
• ISO 1536:1975 Continuous mechanical handling equipment for loose bulk materials Troughed belt conveyors (other than portable conveyors) Belt pulleys.
• ISO 1537:1975 Continuous mechanical handling equipment for loose bulk materials Troughed belt conveyors (other than portable conveyors) Idlers.
• ISO16851:2004 Textile conveyor belts Determination of the net length of an endless (spliced) conveyor belt.
• ISO 1816:1975 Continuous mechanical handling equipment for loose bulk materials and unit loads Belt conveyors Basic characteristics of motorised driving pulleys.
• ISO 18573:2003 Conveyor belts Test atmospheres and conditioning periods.
• ISO 2109:1975 Continuous mechanical handling equipment Light duty belt conveyors for loose bulk materials.
• ISO 251:2003 Conveyor belts with textile carcass Widths and lengths
  ISO 252:1999 Textile conveyor belts Adhesive strength between constitutive
  elements Part 1: Methods of test.
• ISO 282:1999 Conveyor belts Sampling.
• ISO 283-1:2000 Textile conveyor belts Full thickness tensile testing Part 1: Determination of tensile strength, elongation at break and elongation at the reference load.
• ISO 284:2003 Conveyor belts Electrical conductivity Specification and test method.
• ISO 340:2004 Conveyor belts Laboratory scale flammability characteristics Requirements and test method.
• ISO 3684:1990 Conveyor belts Determination of minimum pulley diameters.
• ISO 3870:1976 Conveyor belts (fabric carcass), with length between pulley centres up to 300 m, for loose bulk materials Adjustment of take-up device.
• ISO 4123:1979 Belt conveyors Impact rings for carrying idlers and discs forreturn idlers Main dimensions.
• ISO 433:1991 Conveyor belts Marking.
• ISO 5048:1989 Continuous mechanical handling equipment Belt conveyors with carrying idlers Calculation of operating power and tensile forces.
• ISO 505:1999 Conveyor belts Method for the determination of the tear propagation resistance of textile conveyor belts.
• ISO 5284:1986 Conveyor belts List of equivalent terms.
• ISO 5285:2004 Conveyor belts Guidelines for storage and handling.
• ISO 5293:2004 Conveyor belts Determination of minimum transition distance on three idler rollers
  ISO 583-1:1999 Conveyor belts with a textile carcass Total thickness and thickness of elements Part 1: Methods of test.
• ISO 583:1990 Conveyor belts with a textile carcass Tolerances on total thickness and thickness of covers Direct measurement method.
• ISO 703-1:1999 Conveyor belts Transverse flexibility and troughability Part 1: Test method.
• ISO 703:1988 Conveyor belts Troughability Characteristics of transverse flexibility and test method.
• ISO 7149:1982 Continuous handling equipment Safety code Special rules.
• ISO 7590:2001 Steel cord conveyor belts Methods for the determination of total thickness and cover thickness.
• ISO 7622-1:1984 Steel cord conveyor belts Longitudinal traction test Part 1: Measurement of elongation.
• ISO 7622-2:1984 Steel cord conveyor belts Longitudinal traction test Part 2: Measurement of tensile strength.
• ISO 7623:1996 Steel cord conveyor belts Cord-to-coating bond test Initial test and after thermal treatment.
• ISO 8094:1984 Steel cord conveyor belts Adhesion strength test of the cover to the core layer.
• ISO 9856:2003 Conveyor belts Determination of elastic and permanent elongation and calculation of elastic modulus.
• ISO/FDIS 252 Conveyor belts Adhesion between constitutive elements Test methods.
• ISO/FDIS 283 Textile conveyor belts Full thickness tensile strength, elongation at break and elongation at the reference load Test method.
• ISO/FDIS 583 Conveyor belts with a textile carcass Total belt thickness andthickness of constitutive elements Test methods.
• ISO/FDIS 703 Conveyor belts Transverse flexibility (troughability) Test method.
• ISO/TR 5045:1979 Continuous mechanical handling equipment Safety code for belt conveyors Examples for guarding of nip points.
• ISO/TR 8435:1984 Continuous mechanical handling equipment Safety code for belt conveyors examples for protection of pinch points on idlers.

ABRASION RESISTANCE OF CONVEYOR BELTS

There are many system design recommendations to improve belt cover life both from an abrasion and a cut & gouge standpoint, regardless of compound. From an abrasion standpoint,
the following guidelines should be used:

• The faster the speed of the conveyor, the greater the wear. The material bounces and
  abrades in the loading zone until it gets up to the same speed of the belt. The higher the
  relative speed differential, the more wear will occur.
• The shorter the center to center length of the system, the greater the wear. This is simply due to more cycles per hour.
• The higher the angle of incline at the loading point of the conveyor, the greater the wear. The higher angle makes it tougher for the material to get up to the speed of the belt (i.e. 15ÿ incline conveyor will wear faster than a flat conveyor)
• The higher the angle of chute, the greater the wear. The more the material is being
  transferred to a conveyor belt in the horizontal direction instead of vertical, the less the wear. Therefore, a chute with a 30° angle will project the material at a greater horizontal velocity than a chute with a 90° straight down drop, reducing the wear.
• The higher the drop height, the greater the wear.
• The higher the feed angle from one conveyor to the next, the greater the wear. This means
  that a conveyor belt that is fed inline from another conveyor will wear less than one that is
  being fed at an angle.
• Scraper tension is critical. Too loose and the material will not be removed from the cover.
  Too tight and the cover will get worn away significantly faster.

If the material being conveyed is large enough and/or sharp enough, cut and gouge damage to
the cover will occur. From this standpoint, the following guidelines should be used:

• The higher the drop height, the greater the damage to the belt cover and carcass. Installing
  bars in the crusher or chute to slow down the material when practical will reduce the material speed and impact energy.
• Loading fines on to the belt before the large diameter material will reduce impact damage
  dramatically. The fines absorb the high impact energy, protecting the belt cover.
• Impact idlers reduce the amount of impact damage to a belt in comparison to impact beds
  because the belt has more room to deflect.