FAQs on Belt Conveyors and Bulk Material Handling Equipment (Issue 4)

Following the widespread industry attention garnered by the first three installments of our FAQs, in this issue we focus on the core pain points including the selection, design, intelligent upgrading and special working condition adaptation of belt conveyors and their associated auxiliary equipment. Combining ZOOMRY's years of practical experience in international projects, we provide professional and detailed answers for global users, helping you efficiently solve practical problems in the production process. For quick access to questions and solutions, you may skip to the table at the end of the article and the previous FAQ installments.

1. How to Select a Speed Reducer? What are the Basis?

The selection of a speed reducer shall follow the core principles of "adapting to working conditions, ensuring load capacity and balancing economy", with the basis centered on three dimensions: power matching, working condition adaptation and thermal capacity accounting, rather than simply relying on the product of motor power and service factor.

First, based on the rated motor power, a reasonable service factor shall be determined in combination with the actual working conditions of the equipment. The core function of the service factor is to compensate for the impact load during the start-up of the belt conveyor, the fatigue load from continuous operation, and the overload risk caused by material fluctuations. In light of international industry standards and ZOOMRY's experience in global projects, a service factor of more than 2.0 is generally required for speed reducers due to factors such as material quality and processing precision, to ensure reliability in long-term heavy-duty operation. For branded speed reducers, thanks to their superior material performance and processing technology, the service factor can be controlled at more than 1.5 times. However, it should be noted that if the belt conveyor is used in heavy-duty and continuous operation working conditions such as mines and ports, or in cases with frequent start-up and braking, the service factor shall be appropriately increased (it is recommended to raise it by 0.3-0.5 times) to avoid premature damage to the speed reducer.

Second, friction heat is generated during the operation of the speed reducer. If the heat cannot be dissipated in a timely manner, it will lead to aging of lubricating oil, accelerated wear of gears and even jamming failures. Therefore, during selection, it is necessary to calculate whether the thermal capacity of the speed reducer meets the requirements in combination with the operating ambient temperature, continuous operation time and heat dissipation conditions of the equipment. For belt conveyors in high-temperature environments (above 40℃) or with long-term continuous operation, speed reducers with larger thermal capacity shall be selected, or supporting heat dissipation devices shall be installed; for low-temperature environments, the cold resistance of the speed reducer shall also be considered to prevent the solidification of lubricating oil from affecting heat dissipation.

In addition, details such as transmission ratio, installation space and load type shall be taken into account in selection: the transmission ratio shall be accurately matched with the designed belt speed and drum diameter of the belt conveyor to ensure the output speed meets production requirements; in scenarios with limited installation space, compact-structured models such as planetary speed reducers can be selected; in working conditions with large impact loads (such as the discharge end with large material drop), hardened gear surface speed reducers with stronger impact resistance shall be selected. Based on different working conditions worldwide, ZOOMRY can provide customized speed reducer selection solutions to adapt to the actual needs of various bulk material handling scenarios.

2. Is Redundancy Considered in the Design of Belt Conveyors?

As the core equipment for bulk material handling, reasonable redundancy must be reserved in the design of belt conveyors. This is the key to ensuring the long-term stable operation of the equipment, coping with fluctuations in working conditions and extending the service life of the equipment, and it is also the core requirement for ZOOMRY to comply with international design standards. Redundancy design is mainly focused on three core parameters: handling capacity, motor power and Conveyor Belt safety factor, while also taking into account the load-bearing capacity of other key components.

In terms of handling capacity, the core purpose of redundancy design is to cope with sudden situations such as fluctuations in material particle size and uneven feeding, so as to avoid equipment overload caused by short-term handling capacity exceeding the designed value. In accordance with international design specifications for bulk material handling equipment and ZOOMRY's project experience, a redundancy margin of within 15% is usually reserved for the designed handling capacity of belt conveyors, that is, the equipment can operate normally and stably when the actual handling capacity exceeds the designed capacity by within 15% without additional modification. It should be noted that if the material has high moisture content and is prone to caking, or there are intermittent peak feeding, the redundancy ratio of handling capacity can be appropriately increased (it is recommended not to exceed 20%), and the feeding device shall be adjusted in a supporting manner to ensure uniform material conveying.

In terms of motor power, redundancy design needs to consider the impact of fluctuations in operating resistance, environmental factors (such as low temperature and high temperature), start-up impact and so on. For example, in low-temperature environments, the viscosity of conveyor belts and lubricating oil increases, leading to a significant rise in operating resistance; during heavy-duty start-up, the motor needs to overcome greater static loads. Therefore, a redundancy of 10%-15% shall be reserved for motor power to avoid overheating and burnout caused by long-term full-load operation of the motor. When selecting motors, ZOOMRY accurately calculates the power redundancy in combination with the environmental conditions and working condition requirements of different regions around the world, ensuring the reliability and economy of motor operation.

In terms of the safety factor of conveyor belts, redundancy design is the core guarantee to avoid belt breakage. As the load-bearing component of the belt conveyor, the conveyor belt bears the weight of materials, tension and friction for a long time, and its safety factor shall be reasonably determined according to the belt material and working conditions - the safety factor of ordinary canvas belts shall not be less than 6, and that of steel cord belts shall not be less than 8. For heavy-duty and long-distance belt conveyors, the safety factor shall be appropriately increased (it is recommended to raise it by 1-2). In addition, in the design process, ZOOMRY also reserves load-bearing redundancy for key stress components such as idler sets, drums and frames, and optimizes the structural design through finite element analysis to ensure the equipment can still operate stably under extreme working conditions.

3. What Intelligent Configurations are Provided for Unattended Operation (Automatic Inspection)?

Unattended operation can not only reduce the cost of manual inspection and avoid inspection risks in dangerous areas such as high altitudes and galleries, but also improve the accuracy of equipment fault early warning and reduce unplanned downtime. Combining years of experience in international intelligent projects and integrating advanced global technologies, ZOOMRY has launched an unattended operation solution with the following mature intelligent configurations, all of which have been applied in many projects at home and abroad and adapted to the working condition requirements of different regions around the world.

Track-type Inspection Robot: As the core equipment for automatic inspection, it can move independently along the track of the belt conveyor gallery, fully covering the inspection scenarios along the line. Equipped with various detection modules such as noise sensors, temperature sensors, fire detectors and deviation recognition sensors, the robot can collect key data such as noise, bearing temperature and ambient temperature during the operation of the belt conveyor in real time, and accurately identify abnormal conditions such as conveyor belt deviation, abnormal component noise and fire. At the same time, it has a real-time video transmission function, allowing staff to view the on-site situation through the remote central control system, completely replacing manual inspection. It is especially suitable for scenarios with high manual inspection difficulty such as long-distance and high-altitude galleries.
Automatic Lubrication Device: For core rotating components such as drums and idlers of belt conveyors, an automatic lubrication device is equipped, which can automatically and accurately inject lubricating oil according to the equipment operation time and load conditions, avoiding component wear and jamming failures caused by untimely and uneven manual lubrication. The device is equipped with lubricating oil level monitoring and oil shortage early warning functions, enabling staff to check the lubrication status remotely and replenish lubricating oil in a timely manner, greatly reducing equipment maintenance costs and extending the service life of bearings and drums.
On-line Vibration and Temperature Monitoring System for Drive Devices: Vibration sensors and temperature sensors are installed on core drive components such as drive motors and speed reducers of belt conveyors to collect data such as vibration frequency and temperature changes in real time, and realize early warning of abnormal working conditions through big data analysis. When problems such as bearing wear, gear damage and motor overheating occur in the drive components, the system will immediately send out an early warning signal and push the specific fault location and fault type, allowing staff to conduct troubleshooting in a timely manner, avoid the expansion of faults and ensure the continuous and stable operation of the equipment.
Intelligent Image Recognition System: Relying on AI vision technology, it integrates functions such as face recognition, foreign object intrusion recognition, and conveyor belt deviation and tear recognition to comprehensively ensure the safe operation of equipment. The face recognition function can realize personnel access management in key areas such as machine rooms and central control rooms to prevent unauthorized personnel from operating the equipment; the foreign object intrusion recognition can accurately detect the intrusion of personnel and sundries in the belt conveyor gallery and issue an alarm in a timely manner to avoid safety accidents; the conveyor belt deviation and tear recognition can monitor the operation status of the conveyor belt in real time, accurately identify hidden dangers such as deviation and tear, and issue early warnings to reduce economic losses caused by belt damage.

In addition, the entire unattended operation system can be equipped with a remote central control platform to realize real-time monitoring of equipment operation data, fault early warning, remote operation (such as start-up, stop, speed regulation) and other functions. Staff can complete the centralized management of multiple belt conveyors in the central control room, truly realizing unattended operation. ZOOMRY's intelligent configurations can be flexibly combined according to the actual needs of users, adapting to bulk material handling projects of different scales and working conditions, and complying with international intelligent development standards.

4. What Precautions Should Be Taken for Belt Conveyors in Cold Regions?

The operation of belt conveyors in cold regions (usually referring to areas with an ambient temperature below -10℃ and an extreme low temperature of up to -40℃) needs to focus on addressing the adverse effects of low-temperature environments on equipment materials, operating resistance and component performance.

First, cold resistance shall be the key consideration in material selection, and the materials of core components shall meet the mechanical performance requirements in low-temperature environments to avoid failures caused by low-temperature brittle fracture and aging. For conveyor belts, cold-resistant rubber conveyor belts shall be selected, whose minimum service temperature shall be 5-10℃ lower than the extreme low temperature of the region, and they shall also have good flexibility and tear resistance to prevent the belt from hardening and breaking at low temperatures; for steel materials, steels with good low-temperature toughness (such as Q355D and Q355E) shall be selected for components such as frames, drums and idlers, and ordinary carbon steel shall be avoided to prevent brittle fracture of steel at low temperatures; for lubricating oil and grease, low-temperature lubricating oil (grease) shall be selected, whose freezing point shall be lower than the extreme low temperature of the region to ensure good lubrication performance at low temperatures and reduce friction and wear of components. At the same time, the status of lubricating oil (grease) shall be checked regularly, and aged and solidified lubricating oil (grease) shall be replaced in a timely manner.

Second, the redundancy factor of motor power shall be appropriately increased. In low-temperature environments, the viscosity of conveyor belts and lubricating oil increases, leading to a significant rise in equipment operating resistance, and the static load during motor start-up also increases. Therefore, the redundancy factor of motor power shall be increased by 0.2-0.3 times compared with that in normal temperature environments to ensure the motor can start stably and operate normally, avoiding overheating and burnout caused by long-term full-load operation of the motor. In addition, the motor shall be equipped with cold-proof covers and heating devices to prevent icing inside the motor and aging of coils, ensuring the operational reliability of the motor.

Third, strict strength accounting and structural optimization shall be carried out for core stress components and supports. In low-temperature environments, the impact toughness of steel decreases, and the load-bearing capacity of components is affected. Therefore, in the design process, ZOOMRY conducts strict accounting for core stress components such as frames, drums and idler sets through finite element analysis technology, optimizes the structural design, increases the thickness of components and reinforces the connection parts to ensure the components can still meet the load-bearing requirements under low-temperature and heavy-duty working conditions, avoiding deformation and fracture of components.

Finally, effective cold and anti-freezing protection measures for the equipment shall be taken. The belt conveyor gallery shall be equipped with thermal insulation layers to reduce the impact of low ambient temperature on the equipment; heating devices shall be installed at parts prone to icing such as discharge points and feeding points to prevent material icing and blockage and conveyor belt slipping; the equipment shall be inspected regularly to remove snow and ice on the surface of the equipment in a timely manner, and the connection status of components shall be checked to avoid component jamming and damage caused by snow and ice.

5. Types of Roller Lagging and How to Select?

Roller lagging can increase the friction between the drum and the conveyor belt, avoid belt slipping, and reduce wear and corrosion on the drum surface. At present, in the global bulk material handling industry, roller lagging is mainly divided into four types: cast lagging, cold bonding lagging, ceramic lagging and tile shell lagging. Various types of lagging have differences in performance and applicable scenarios. Combining international working condition requirements, ZOOMRY provides professional lagging selection suggestions for global users to ensure the accurate adaptation of lagging to working conditions.

Cast Lagging: As the most widely used type of lagging at present, cast lagging is divided into three types: flat lagging, diamond pattern lagging and herringbone pattern lagging, which are suitable for most bulk material handling scenarios. Cast lagging adopts a high-temperature vulcanization process, with the lagging layer closely combined with the drum surface, strong adhesion and excellent wear resistance, and a long service life (usually up to 3-5 years). Among them, flat lagging is suitable for light-load, low-speed scenarios with small material particle size, such as drums supporting hopper feeders; diamond pattern lagging can effectively increase friction and is suitable for heavy-duty, slip-prone working conditions, such as drive drums of belt conveyors; herringbone pattern lagging has good drainage and material discharge performance and is suitable for humid scenarios with easy material adhesion, such as drums of belt conveyors in rainy areas such as ports and mines.
Cold Bonding Lagging: The rubber sheet is pasted on the drum surface with special glue without high-temperature vulcanization, which has the advantages of simple operation, high construction efficiency and on-site construction feasibility. It is suitable for on-site emergency maintenance or roller lagging of small belt conveyors where the drum cannot be disassembled. The core advantage of cold bonding lagging is flexible construction, and rubber sheets can be customized according to the drum size. However, its service life and adhesion depend on the quality of glue, the material of rubber sheets and the bonding process - wear-resistant and anti-aging special rubber sheets and glue shall be selected, and the cleanliness and temperature during the bonding process shall be strictly controlled to avoid problems such as debonding and cracking. ZOOMRY can provide professional construction guidance for cold bonding lagging to ensure the construction quality complies with international standards.
Ceramic Lagging: With ceramic particles as the core material, it has extremely strong wear resistance and friction coefficient, and its service life is 2-3 times that of ordinary cast lagging. It is suitable for heavy-duty, high-wear and high-impact working conditions, such as drive drums of belt conveyors in industries such as mines and metallurgy, which can effectively solve the problems of belt slipping and excessive drum wear. However, ceramic lagging has obvious limitations: the ceramic material is brittle and prone to brittle fracture and falling off in low-temperature environments (below -10℃), so it is not suitable for cold regions; at the same time, ceramic lagging has high construction difficulty and cost, and the selection shall be weighed according to the actual working conditions.
Tile Shell Lagging: The tile shell-shaped rubber sheet is fixed on the drum surface by welding, with a narrow application range, only suitable for some special scenarios (such as the repair of drums with severe surface damage where other lagging methods cannot be adopted, or temporary emergency maintenance). The advantages of tile shell lagging are fast construction speed and convenient repair, but its adhesion is poor, and its wear resistance is inferior to cast lagging and ceramic lagging. It is prone to tile shell falling off and excessive rubber sheet wear during long-term heavy-duty operation, and has been gradually replaced by cast lagging and cold bonding lagging at present.

The selection of lagging types follows the core principles of "adapting to working conditions, cost controllability and giving priority to service life": cast lagging (mainly diamond pattern lagging) is the first choice for conventional working conditions; cold bonding lagging is selected for on-site maintenance and drums that cannot be disassembled; ceramic lagging (for non-cold regions) is selected for heavy-duty and high-wear working conditions; tile shell lagging can be selected for temporary emergency maintenance. According to the working condition conditions and budget requirements of users, ZOOMRY can provide customized roller lagging solutions with high-quality lagging materials and professional construction services.

6. Can Pipe conveyors Replace Trough Belt Conveyors?

Both pipe conveyors and trough belt conveyors belong to bulk material handling equipment, and there are significant differences between the two in structural form, performance characteristics and applicable scenarios. Pipe conveyors cannot completely replace trough belt conveyors, and the selection shall be made reasonably according to factors such as the actual working conditions of users, environmental protection requirements and investment budget. Combining global project experience, ZOOMRY provides professional selection references for global users from three dimensions: performance, economy and applicable scenarios, complying with the application trend of international bulk material handling equipment.

First, clarify the core performance differences between the two. The core advantage of pipe conveyors is the adoption of a fully enclosed tubular structure, where materials are conveyed inside the wrapped conveyor belt, which can completely avoid material spillage and dust emission pollution, with excellent environmental performance. It is suitable for scenarios with extremely high environmental protection requirements (such as bulk material handling in residential areas, scenic spots and urban surrounding areas, or the conveyance of easy-to-dust, toxic and harmful materials); at the same time, pipe conveyors can realize steep angle conveying (the maximum conveying angle can reach 30°), saving floor space and adapting to scenarios with complex terrain. However, pipe conveyors also have prominent disadvantages: their energy consumption ratio is more than 50% higher than that of trough belt conveyors, mainly because the tubular structure leads to an increase in the operating resistance of the conveyor belt and higher motor power demand, resulting in high energy consumption costs for long-term operation; the wear rate of idlers and conveyor belts is faster, with a service life of only 60%-70% that of trough belt conveyors, significantly increasing the maintenance frequency and maintenance costs; the equipment investment cost is 30%-50% higher than that of trough belt conveyors, and the maintenance difficulty is high, requiring a higher professional level of maintenance personnel; in addition, under the same handling capacity and belt speed conditions, pipe conveyors require a wider belt width, further increasing the equipment floor space and investment cost.

As the most widely used equipment in the global bulk material handling industry, trough belt conveyors have core advantages such as low energy consumption, stable operation, simple maintenance and low investment cost, adapting to most bulk material handling scenarios (such as mines, ports, power plants, cement plants, etc.). Especially for long-distance and large-capacity bulk material handling, trough belt conveyors have more obvious advantages in economy and reliability. To address the dust emission problem of trough belt conveyors, effective measures such as installing rain and dust covers along the line, optimizing the belt cleaning device and humidifying materials can be adopted to control dust emission pollution and meet international environmental protection standards. ZOOMRY's dust control solution for trough belt conveyors has been applied in many projects at home and abroad, which can not only meet environmental protection requirements but also control equipment investment and operation costs.

Therefore, pipe conveyors cannot replace trough belt conveyors, and the two have their own focused applicable scenarios: if the project has extremely high environmental protection requirements and complex terrain (requiring steep angle conveying), and the user can afford high investment and operation costs, pipe conveyors can be selected; if the project is for conventional bulk material handling, with emphasis on economy, reliability and maintenance convenience, and the dust emission problem can be solved through supporting measures, trough belt conveyors are still the optimal choice. According to the actual needs of users and in combination with the environmental protection standards and working condition conditions of different regions around the world, ZOOMRY can provide the most suitable selection suggestions for bulk material handling equipment.

7. Measures to Avoid Dust Emission Along Belt Conveyor Galleries

Dust emission along belt conveyor galleries is a common problem in the bulk material handling industry, which not only pollutes the environment and endangers the health of staff, but also causes material waste and accelerated equipment wear (dust entering bearings, motors and other components will increase friction and wear), failing to comply with the global trend of environmental protection development.

First, optimize the belt cleaning effect at the head discharge point to reduce dust emission from the source. The head discharge point of the belt conveyor is one of the main sources of dust emission. A large amount of dust will be generated when materials fall off the drum, and material residues are easy to adhere to the belt surface, and dust will also be formed when the residues fall off. Therefore, high-efficiency cleaning scrapers (such as the wear-resistant cleaning scraper independently developed by ZOOMRY) shall be selected to closely fit the belt surface and completely remove material residues on the belt surface to avoid residue falling; at the same time, a dust cover shall be installed at the head discharge point to enclose the discharge process and reduce dust diffusion. The dust cover shall be made of materials with good sealing performance to ensure no dust leakage.

Second, solve the dust emission caused by material spillage on the lower belt surface. Most of the dust emission and material spillage along the gallery are caused by incomplete cleaning of the lower belt surface - material residues adhering to the lower belt surface will fall off due to factors such as vibration and wind speed during operation, forming dust. To address this problem, a conveyor belt turning device can be installed to turn the dirty surface of the lower belt upward, facilitating the cleaning scraper to remove material residues. At the same time, a hopper is installed under the turning device to collect the falling material residues, avoiding the residues falling to the gallery ground and forming dust; in addition, the cleaning status of the lower belt surface shall be checked regularly, and the material residues in the hopper shall be cleaned in a timely manner to ensure the cleaning effect.

Third, control dust emission from materials on the upper belt surface. Materials on the upper belt surface are not easy to generate dust, and dust emission only occurs in windy weather or when the material particle size is small and dry. In view of this situation, rain and dust covers can be installed along the belt conveyor to wrap the upper belt surface, which can not only block the impact of strong wind on materials and reduce dust emission, but also prevent rainwater from scouring materials; for long-distance belt conveyors, a fully enclosed gallery design can be adopted to completely isolate the external environment and avoid dust diffusion. The enclosed gallery shall be equipped with ventilation devices to ensure air circulation inside the gallery and facilitate equipment inspection and maintenance.

In addition, auxiliary measures can be taken to further control dust emission. For materials with small particle size and dryness, a material humidification device can be installed at the feeding point to appropriately increase the material moisture and reduce dust emission (the humidification amount shall be controlled reasonably to avoid material caking affecting conveyance); the gallery ground shall be cleaned and sprinkled with water regularly to keep the ground moist and prevent ground dust from being blown up by the wind to form secondary dust emission; dust-proof curtains shall be installed at the entrance and exit of the gallery to reduce the leakage of dust in the gallery to the external environment; at the same time, a regular dust emission inspection system shall be established to timely investigate dust emission hidden dangers and ensure the implementation of various dust control measures.

8. Common Specifications of Motor Power

As the power source of belt conveyors, the selection of motor power specifications directly determines the operational efficiency and reliability of the equipment, which shall be reasonably determined according to factors such as the handling capacity, belt width, conveying distance, material density and working conditions of the belt conveyor. Different specifications of motors are suitable for different bulk material handling scenarios. Combining the global application needs of belt conveyors, ZOOMRY has sorted out the following common specifications of motor power, covering small, medium and large belt conveyors and various supporting equipment, adapting to different voltage levels and frequency requirements around the world (such as 380V/50Hz, 460V/60Hz, etc.). At the same time, customized motor selection services can be provided according to the actual needs of users.

Common motor power specifications for belt conveyors and bulk material handling equipment (Unit: kW): 5.5, 7.5, 11, 15, 18.5, 22, 30, 37, 45, 55, 75, 90, 110, 132, 160, 185, 200, 220, 250, 280, 315, 355, 400, 450, 500, 560, 630, 710, 800, 900, 1000, 1120……

Among them, low-power motors (5.5-37kW) are mainly suitable for light-load, low-speed and short-distance conveying equipment such as small belt conveyors and hopper feeders, such as short-distance bulk material handling in small mines and building material factories; medium-power motors (45-250kW) are suitable for belt conveyors under conventional working conditions, such as large-capacity and medium-long distance conveying in small and medium-sized mines and ports, which are the most widely used power specifications at present; high-power motors (280kW and above) are suitable for heavy-duty, long-distance and high-speed belt conveyors, such as bulk material handling lines in large mines and ports, or belt conveyors under special working conditions such as cold regions and large impact loads.

It should be noted that the selection of motor power shall be flexibly adjusted according to the actual working conditions. For example, large-power motors shall be selected for long-distance and large-capacity belt conveyors; the motor power of belt conveyors in cold regions shall be appropriately increased (by raising the redundancy factor); for belt conveyors with frequent start-up and braking, motors with excellent start-up performance shall be selected to avoid motor overheating. With years of experience in international projects, ZOOMRY can accurately calculate the motor power according to the specific working conditions of users and recommend the most suitable motor specifications, balancing operational efficiency and economy.

9. Quick Reference Table for Q&A

Common Questions	Core Answers
How to Select a Speed Reducer? What are the Basis?	Core basis: Motor power × Service factor (≥2.0 for domestic products, ≥1.5 for imported products, can be increased for heavy-duty/special working conditions) + Thermal capacity accounting; additional consideration of transmission ratio, installation space and load type to adapt to working condition requirements.
Is Redundancy Considered in the Design of Belt Conveyors?	Redundancy is reserved for handling capacity (allowing exceeding the designed capacity by within 15%), motor power (10%-15% redundancy) and conveyor belt safety factor (≥6 for ordinary belts, ≥8 for steel cord belts); load-bearing redundancy is reserved for core stress components.
What Intelligent Configurations are Provided for Unattended Operation?	Track-type inspection robot, automatic lubrication device, vibration/temperature sensors for drive components, intelligent image recognition system, equipped with a remote central control platform, all with actual application cases.
What Precautions Should Be Taken for Belt Conveyors in Cold Regions?	Cold-resistant materials shall be used (conveyor belts, steel, lubricating oil); the motor power factor shall be slightly increased; strict accounting shall be carried out for core stress components; effective cold and anti-freezing protection measures shall be taken (gallery thermal insulation, component heating).
Types of Roller Lagging and How to Select?	Types: Cast lagging (the most commonly used, with 3 types of surfaces), cold bonding lagging (on-site construction), ceramic lagging (high wear resistance, not suitable for cold regions), tile shell lagging (rarely used, for emergency maintenance); select according to working conditions and cost.
Can Pipe Conveyors Replace Trough Belt Conveyors?	No. Pipe conveyors are environmentally friendly but have high energy consumption, high investment and difficult maintenance; trough belt conveyors are economical and reliable, and dust emission can be solved by installing dust covers, adapting to most scenarios.
Measures to Avoid Dust Emission Along Belt Conveyor Galleries?	Optimize the cleaning at the head discharge point and install dust covers; install a conveyor belt turning device to clean the lower belt surface; install rain and dust covers/fully enclose the gallery for the upper belt surface; auxiliary measures such as material humidification and ground cleaning.
Common Specifications of Motor Power?	5.5, 7.5, 11, 15, 18.5, 22, 30, 37, 45, 55, 75, 90, 110, 132, 160, 185, 200, 220, 250, 280, 315kW and above, adapting to different working conditions.

If this article fails to answer your questions, you may also visit the previous FAQs: Technical FAQs on Belt Conveyor and Related Equipment、Frequently Asked Questions about Belt Conveyors (Part 2)、Core FAQs on Belt Conveyors (Issue 3)

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