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Questions and Answers
What course is being taught in the fall of 2023?
What course is being taught in the fall of 2023?
- Mining Optimization Laboratory
- Materials Handling ENGR 3307 (correct)
- Mechanical Handling - Belt Conveyors I
- None of the above
Who is the instructor for the course Mechanical Handling - Belt Conveyors I?
Who is the instructor for the course Mechanical Handling - Belt Conveyors I?
- Dr. Ahlam Maremi (correct)
- Serge Bharti
- Dr. Laurentian University
- None of the above
In which school is Dr. Ahlam Maremi teaching?
In which school is Dr. Ahlam Maremi teaching?
- Bharti School of Engineering (correct)
- Mining Optimization Laboratory
- Ecole de Genie
- None of the above
What is the greatest use of belt conveyors according to the text?
What is the greatest use of belt conveyors according to the text?
What caused problems when carrying heavier materials on belt conveyors?
What caused problems when carrying heavier materials on belt conveyors?
What is the basic configuration of a belt conveyor?
What is the basic configuration of a belt conveyor?
What is a remarkable example of a belt conveyor mentioned in the text?
What is a remarkable example of a belt conveyor mentioned in the text?
What are impact idlers used for?
What are impact idlers used for?
What is the function of self-adjusting troughing idlers?
What is the function of self-adjusting troughing idlers?
What are steel idlers usually used for?
What are steel idlers usually used for?
What is the purpose of return idlers?
What is the purpose of return idlers?
Why is matching the belt to idlers important?
Why is matching the belt to idlers important?
What are the consequences of incorrect matching of belt to idlers?
What are the consequences of incorrect matching of belt to idlers?
What is the significance of the transition from troughed to flat belt?
What is the significance of the transition from troughed to flat belt?
What is the recommended transition from troughed belt to flat belt for a 10° troughing angle?
What is the recommended transition from troughed belt to flat belt for a 10° troughing angle?
What percentage of fuel energy is used in moving the payload in truck haulage?
What percentage of fuel energy is used in moving the payload in truck haulage?
What is a traditional disadvantage of conveyors?
What is a traditional disadvantage of conveyors?
What is an advantage of conveyors over trucks in terms of manpower requirements?
What is an advantage of conveyors over trucks in terms of manpower requirements?
What is a potential disadvantage of conveyors in underground environments?
What is a potential disadvantage of conveyors in underground environments?
What are the main components of belt conveyors?
What are the main components of belt conveyors?
What influences the choice of cover materials for a conveyor belt?
What influences the choice of cover materials for a conveyor belt?
What is the function of additional layers of fabric (breakers) in a conveyor belt?
What is the function of additional layers of fabric (breakers) in a conveyor belt?
What is the maximum accepted angle for smooth-surfaced troughed belts when operated on an upward incline?
What is the maximum accepted angle for smooth-surfaced troughed belts when operated on an upward incline?
What is the purpose of belt patterns like cleats or flights in belt conveyors?
What is the purpose of belt patterns like cleats or flights in belt conveyors?
What dictates the choice of carcass and cover materials for a conveyor belt?
What dictates the choice of carcass and cover materials for a conveyor belt?
What is the typical conveying capacity of a Japanese 3 m wide belt for sand and rock?
What is the typical conveying capacity of a Japanese 3 m wide belt for sand and rock?
What is the typical conveying capacity of a 15-km belt conveyor in a UK coalfield for coal?
What is the typical conveying capacity of a 15-km belt conveyor in a UK coalfield for coal?
What is the most vulnerable and expensive part of a conveyor?
What is the most vulnerable and expensive part of a conveyor?
What is involved in designing belt conveyor systems?
What is involved in designing belt conveyor systems?
What are the layers of a conveyor belt composed of?
What are the layers of a conveyor belt composed of?
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Study Notes
Belt Conveyor Construction and Operation
- A 15-km belt conveyor in a UK coalfield can convey 3,200 tonnes/hr of coal at speeds up to 8.4 m/s.
- Japanese 3 m wide belt can convey sand and rock at a rate of 30,000 tonnes/hr.
- Belt conveyors consist of components like belt, idlers, drive arrangements, power unit, loading and discharge arrangements, and belt cleaners.
- Designing belt conveyor systems involves calculating belt tensions, take up force, idler spacing, and required motor horsepower.
- Most conveyors use a conventional flat belt, but special forms are available for specific applications.
- The belt is the most vulnerable and expensive part of a conveyor and represents a substantial proportion of the overall capital cost.
- A conveyor belt consists of a core (carcass) and a cover, usually composed of two to ten layers of woven fabric bonded together with rubber.
- The choice of carcass and cover materials is dictated by parameters such as maximum tension in belt, impact forces, and flexibility required.
- The main features influencing the choice of cover are the nature of conveyed material, quantity to be conveyed, method of material feed, belt speed, and environment.
- Additional layers of fabric (breakers) may be fitted next to the carcass to increase adhesion, impact resistance, and cushioning.
- Belt conveyors are operated on an upward incline, with the maximum accepted angle for smooth-surfaced troughed belts being around 16° - 20°.
- Belt patterns like cleats or flights are used to work on steeper inclines and increase carrying capacity. Cleat height is typically between 1.5-2.5 cm.
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