Bucket Elevator for Cement, Clinker and Bulk Materials
TD, NE, TH and HL Vertical Conveyors for Powder, Granules and Abrasive Bulk Materials
What Is a Bucket Elevator?
A bucket elevator is an enclosed vertical conveying machine that uses a series of buckets attached to a belt or chain to lift bulk material from a lower inlet to an upper discharge point. Jiangsu LVRUI Machinery manufactures bucket elevators for cement, clinker, fly ash, limestone, slag, mineral powder and other dry bulk materials. The elevator type, bucket size, lifting height, conveying capacity, drive power, inlet, outlet and casing arrangement can be customized according to the material and plant layout.
Bucket elevators are commonly integrated into a complete conveying system with horizontal conveyors, feeders, storage silos, and downstream processing equipment.
Features
✅ Enclosed Vertical Conveying
The steel casing helps reduce material spillage and uncontrolled dust escape during lifting.
✅ Belt and Chain Types Available
TD, NE, TH and HL configurations are available for different powder, granular and abrasive material applications.
✅ Customized Capacity and Lifting Height
Bucket size, spacing, operating speed, casing height and drive power can be selected according to the required duty.
✅ Wear-Resistant Options
Reinforced buckets, wear liners and heavy-duty chains can be considered for clinker, slag and abrasive materials.
✅ Inspection and Maintenance Access
Inspection doors, access platforms and service openings can be arranged according to the equipment layout.
✅ Multiple Inlet and Outlet Arrangements
Connection dimensions and discharge directions can be customized to match upstream and downstream equipment.
Types of Bucket Elevators
Different materials require different traction components, bucket designs, operating speeds and discharge methods. LVRUI supplies four main series for cement plants and industrial bulk material handling.
| Model | Capacity (t/h) | Max Elevation (m) | Bucket Speed (m/s) | Motor Power (kW) |
|---|---|---|---|---|
| NE15 | 30–80 | 10–40 | 0.5 | 7.5–18.5 |
| NE30 | 60–150 | 20–50 | 0.5 | 11–30 |
| NE50 | 70–200 | 25–60 | 0.5 | 18.5–37 |
| NE100 | 100–300 | 30–70 | 0.5 | 30–55 |
| NE150 | 150–400 | 30–70 | 0.5 | 37–75 |
| Model | Capacity (t/h) | Bucket Width (mm) | Lifting Height (m) | Motor Power (kW) |
|---|---|---|---|---|
| TD250 | 20–40 | 160 | 10–40 | 4–15 |
| TD315 | 35–60 | 200 | 15–50 | 7.5–22 |
| TD400 | 50–80 | 250 | 20–60 | 11–30 |
| TD500 | 80–120 | 315 | 25–65 | 15–37 |
| TD630 | 120–160 | 400 | 30–70 | 22–45 |
| Model | Capacity (t/h) | Chain Speed (m/s) | Lifting Height (m) | Motor Power (kW) |
|---|---|---|---|---|
| TH160 | 15–30 | 0.5 | 10–30 | 4–11 |
| TH250 | 30–50 | 0.5 | 15–40 | 5.5–18.5 |
| TH315 | 50–100 | 0.5 | 20–50 | 11–30 |
| TH400 | 80–180 | 0.5 | 25–60 | 15–45 |
| TH500 | 100–250 | 0.5 | 30–70 | 22–55 |
| Model | Capacity (t/h) | Max Lifting Height (m) | Bucket Type | Motor Power (kW) |
|---|---|---|---|---|
| HL300 | 30–60 | 15–45 | Deep bucket | 7.5–22 |
| HL400 | 40–100 | 20–55 | Deep bucket | 11–30 |
| HL500 | 60–130 | 25–60 | Deep bucket | 15–37 |
| HL630 | 100–160 | 30–65 | Deep bucket | 22–45 |
| HL800 | 150–200 | 30–70 | Deep bucket | 30–55 |
A belt-type unit normally provides quieter operation and is commonly used for dry powder. Chain-type equipment is generally selected for heavier, hotter or more abrasive materials. The final selection must be based on the actual temperature, particle size, bulk density, moisture and required capacity.
Reference Model Ranges
| Series | Reference Capacity | Reference Lifting Height | Traction Type | Reference Motor Power |
|---|---|---|---|---|
| NE Series | 30–400 t/h | 10–70 m | Plate chain | 7.5–75 kW |
| TD Series | 20–160 t/h | 10–70 m | Belt | 4–45 kW |
| TH Series | 15–250 t/h | 10–70 m | Ring chain | 4–55 kW |
| HL Series | 30–200 t/h | 15–70 m | Chain | 7.5–55 kW |
These values are for preliminary comparison only. Actual conveying capacity, lifting height and motor power depend on the material bulk density, particle size, bucket filling rate, operating speed, feeding condition, discharge method and continuous operating time.
The maximum lifting height should not be selected independently from the belt or chain strength, casing stability, drive arrangement and maintenance requirements.
For broader engineering reference, CEMA publishes industry guidance covering bucket elevator selection, horsepower calculations, casings, buckets, pulleys, chains, sprockets, and safety.
Suitable Materials and Applications
Bucket elevators are widely used in cement plants, grinding stations, terminals, mineral processing facilities and dry powder production lines.
Typical materials include:
✅ Cement
✅ Fly ash
✅ Lime powder
✅ Mineral powder
✅ Gypsum powder
✅ Cement clinker
✅ Crushed slag
✅ Limestone
✅ Coal ash
✅ Dry granules and small bulk solids
Typical installation positions include:
✅ Vertical conveying from ground level to storage silos
✅ Feeding cement or powder into process equipment
✅ Lifting clinker between conveyors and storage sections
✅ Transferring material to packing or loading equipment
✅ Connecting horizontal conveying equipment at different elevations
✅ Returning collected material to the production process
Wet, sticky or strongly compacting materials require separate evaluation. Material buildup in the boot section or buckets can increase resistance, reduce discharge efficiency and overload the drive system.
For long-distance horizontal transport before or after vertical lifting, a belt conveyor may be used to connect the bucket elevator with storage or processing equipment.
How Does a Bucket Elevator Work?
Material enters the boot section through the lower inlet and fills the moving buckets. The belt or chain carries the loaded buckets upward through the enclosed casing.
When the buckets reach the head section, the material is discharged into the outlet chute. Depending on the operating speed, bucket shape and material characteristics, discharge may occur through centrifugal force, gravity or a combination of both.
The empty buckets then return downward to the boot section and repeat the conveying cycle.
Stable operation depends on controlled feeding, correct belt or chain tension, aligned head and tail components, suitable bucket spacing and an unobstructed discharge chute. Excessive feeding can cause material accumulation in the boot section and increase the risk of overload.
How to Select the Correct Type
A TD belt bucket elevator is generally suitable for normal-temperature cement, fly ash and dry powder where relatively quiet operation is required.
An NE plate chain elevator is commonly selected for clinker, slag and other heavy or abrasive materials. Its lower operating speed and heavy-duty chain construction are suitable for demanding conveying duties. For abrasive clinker or slag handling, the elevator can also be connected with an enclosed chain conveyor for horizontal material transfer.
A TH ring chain type can be considered for general granular and medium-duty bulk material applications.
An HL chain type is used for general vertical lifting with deep buckets, but the final suitability should be confirmed according to the material and required capacity.
The selection should not be based only on price or nominal capacity. Incorrect bucket speed, inlet feeding or discharge design can cause material return, bucket damage, blockage or excessive wear.
Information Required for Selection
Please provide the following information before quotation:
| Required Information | Details |
|---|---|
| Material | Name, bulk density and particle size |
| Material Condition | Dry, moist, free-flowing, sticky or abrasive |
| Material Temperature | Normal and maximum temperature |
| Required Capacity | Conveying rate in t/h or m³/h |
| Lifting Height | Distance between the inlet and discharge level |
| Feeding Method | Belt conveyor, screw conveyor, chute, hopper or other equipment |
| Discharge Direction | Required outlet orientation and connection size |
| Operating Schedule | Continuous or intermittent operation |
| Construction Material | Carbon steel, stainless steel or special requirement |
| Site Layout | Installation drawing and available maintenance space |
| Power Supply | Voltage, frequency and motor requirements |
| Safety Devices | Speed, blockage, misalignment or level monitoring |
The feeding capacity should be controlled to match the elevator’s actual conveying rate. A screw conveyor, controlled feeder, or other upstream conveying equipment may be required to provide stable material feeding and prevent overload at the boot section.
Main Components
A typical bucket elevator can include:
✅ Head section with drive pulley or sprocket
✅ Boot section with inlet and tensioning device
✅ Steel intermediate casing sections
✅ Rubber belt, plate chain or ring chain
✅ Steel or polymer buckets
✅ Gear motor and backstop
✅ Head and tail shaft assemblies
✅ Inspection doors and maintenance openings
✅ Speed, blockage or misalignment monitoring devices when required
✅ Access platform, ladder and safety guard
The exact configuration depends on the selected series and operating conditions. High-temperature or abrasive materials require particular attention to the buckets, chains, bearings, seals and casing wear protection.
Belt or Chain Bucket Elevator?
The choice between a belt and chain configuration mainly depends on the material and operating conditions.
A belt elevator is commonly used for dry powder and relatively light materials. It normally operates with lower noise and does not require chain lubrication, but the belt temperature limit and tracking condition must be considered.
A chain elevator is more suitable for heavy, abrasive or elevated-temperature materials. However, the chain, sprockets and buckets generally require closer inspection for elongation, wear and alignment.
Neither configuration is universally better. The correct design is the one that matches the material, capacity, height, temperature and maintenance environment.
Manufacturing, Inspection and Delivery
LVRUI manufactures bucket elevator casing sections, head and boot assemblies, buckets, connection flanges and supporting structures according to the approved drawing and order requirements.
Before shipment, the equipment can be checked for:
✅ Main dimensions and lifting height
✅ Inlet and outlet direction
✅ Bucket quantity and spacing
✅ Belt or chain assembly
✅ Head and tail shaft alignment
✅ Tensioning arrangement
✅ Gear motor and backstop configuration
✅ Inspection doors and maintenance access
✅ Surface treatment and external appearance
Large elevators are normally divided into transport sections according to container dimensions. Site assembly, vertical alignment and final connection are generally completed by the customer or local installation team unless otherwise agreed.
Bucket Elevator FAQs
What materials can a bucket elevator handle?
It can be configured for cement, fly ash, lime powder, mineral powder, clinker, slag, limestone and other dry bulk materials. The correct type depends on particle size, bulk density, temperature, abrasiveness and moisture.
What is the difference between a belt bucket elevator and a chain bucket elevator?
A belt bucket elevator is generally suitable for dry powder, normal operating temperatures, and quieter operation. A chain bucket elevator is normally selected for heavier, hotter, or more abrasive materials such as clinker and slag.
How do I select the correct bucket elevator capacity?
Capacity selection should consider the material bulk density, bucket volume, bucket spacing, operating speed, filling rate and discharge efficiency. The feeding equipment must also provide a stable and controlled material flow.
Can a bucket elevator handle high-temperature clinker?
A chain-type configuration may be suitable for elevated-temperature clinker, but the actual temperature limit depends on the chain, buckets, bearings, seals, lubrication and casing design. The maximum temperature must be confirmed before selection.
What causes bucket elevator blockage or material return?
Common causes include excessive feeding, insufficient bucket speed, poor inlet design, blocked discharge chutes, material buildup, incorrect bucket selection or inadequate tensioning. For a more detailed diagnosis, read our guide to bucket elevator backflow causes and troubleshooting.
What information is required for a bucket elevator quotation?
Please provide the material, required capacity, lifting height, bulk density, particle size, operating temperature, feeding method, discharge direction, operating schedule, power supply, and site layout drawing.
Need a Bucket Elevator for Your Application?
Send us your material, required capacity, lifting height, operating temperature, inlet and outlet dimensions, and site layout. LVRUI will recommend a suitable TD, NE, TH, or HL bucket elevator configuration based on your working conditions.
✅ Belt and Chain Configurations Available
✅ Customized Capacity, Lifting Height, and Connections
✅ Wear-Resistant Options for Clinker and Abrasive Materials
✅ Factory Assembly and Inspection Before Shipment