GRAU BELT FEEDERS: CONTROLLED AND RELIABLE MATERIAL FEEDING

GRAU Belt Feeders (GBF) are designed for accurate and controlled feeding of bulk materials in aggregate processing, mining, quarrying, and industrial applications. Built for durability, consistency, and long service life, they provide a smooth, regulated flow of material to crushers, screens, conveyors, or other downstream equipment.

Unlike conventional conveyors, GRAU Belt Feeders are specifically engineered to operate under hoppers or bins, where variable feed rates and heavy loads require a robust, consistent feeding solution. With a compact footprint and durable design, they integrate easily into existing setups and are available in various sizes to suit different materials and flow requirements.

GBF models are ideal for handling sand, gravel, crushed rock, recycled material, coal, and other bulk solids, offering uniform discharge while minimising surges and blockages. Their low maintenance needs and precise control make them a smart choice for continuous operations.

WHAT IS A BELT FEEDER?

A belt feeder is a type of conveyor used to feed bulk materials at a controlled rate. It consists of a belt running over pulleys and supported by rollers or slider beds, positioned beneath a bin, hopper, or surge pile. Unlike a conveyor, which simply transports material, a belt feeder regulates the flow, making it ideal for dosing, blending, or steady discharge to processing equipment.

WHAT DOES A BELT FEEDER CONSIST OF?

A typical belt feeder includes a heavy-duty frame, a head and tail drum, drive motor, belt tensioning system, and idlers or sliders to support the belt. It may also feature skirting, liners, belt scrapers, and variable speed controls. The frame is usually placed under a storage hopper, designed to handle high loading pressures while maintaining a constant feed rate.

HOW DO BELT FEEDERS WORK?

Belt feeders operate by running a flat or chevron type belt at a controlled speed under a bin or hopper. As material flows onto the belt from above, the feeder regulates the volume discharged based on belt speed and load height. The belt’s speed can be fixed or variable, depending on the application. This smooth, consistent feed helps prevent equipment overload, surging, or inconsistent material flow downstream.

WHAT ARE THE APPLICATION AREAS FOR BELT FEEDERS?

• Quarrying and Mining – Feeding crushers, screens, or conveyors with a steady flow of mined rock, ore, or minerals.
• Sand and Gravel Plants – Regulating material flow from bins to washing or screening equipment.
• Recycling Facilities – Handling crushed concrete, asphalt, and other recycled materials.
• Bulk Material Handling – Feeding coal, grain, fertiliser, cement, or similar materials in ports, terminals, or storage yards.
• Blending and Dosing Systems – Delivering precise amounts of material in mixing or batching operations.