What is the Role of a Feeder Breaker

The feeder breaker is an essential all-in-one machine for feeding, crushing, and conveying, widely used in coal and open-pit mining. Its continuous material flow design ensures efficient operation, making it ideal for large-scale production.

By addressing wear resistance and offering pre-sieving and optional crushing forms, it enhances crushing efficiency, improves material uniformity, and reduces operating costs—making it a core solution for modern mining and material processing.

Roles and Functions

Fundamental Roles
Coarse and Medium Crushing of Materials
Feeder breakers can crush large raw materials (such as raw coal, limestone, and gypsum) into particle sizes suitable for subsequent processing (typically 200–500 mm), meeting the requirements for belt conveying, screening, or further fine crushing.
Improving Material Uniformity
Through the high-speed rotation of the rotor and the impact of hammer heads or toothed rolls, the crushed materials have a more uniform particle size distribution, preventing blockages or efficiency degradation in subsequent processes caused by particle size variations.

Unique Roles and Advantages
Compared with feeder breakers from other brands, our company’s feeder breakers have unique pre-screening functions and optional crushing modes.
Pre-Screening Function
There are two pre-screening methods: dynamic pre-screening and static pre-screening, which can be configured according to different working conditions.

The material receiving section uses static screening. The static screening grate is fixed on the conveying box through rails, suitable for screening large-particle materials.

The non-material receiving section uses dynamic screening. The conveying box is integrated with a specially designed sinusoidal vibrating screen mesh, suitable for screening small-particle and sticky materials. The sinusoidal vibrating screening method in the non-material receiving section prevents material jamming.

Benefits and roles of the pre-screening function: By pre-screening materials before crushing, over-crushing is avoided, the generation of powdery materials is reduced, the output of mineral lumps is maximized, and the economic benefits and value for end users are improved.

Optional Crushing Modes
Our company’s toothed roll crushers and hammer crushers provide customers with optional crushing modes.

• Powerful toothed roll crushersare equipped with cutting teeth and a cutting tooth pattern specially designed for chain conveyors, which can crush materials to the required output size. Since materials are crushed rather than flattened, the particle size is uniform, reducing waste and maximizing product value.
  Benefits and roles of toothed roll crushers: The crushing teeth are made of special formula materials through precision casting and heat treatment, featuring high strength, wear resistance, and impact resistance. The unique and innovative tooth-shaped design with deep spiral distribution ensures strong biting ability and high production efficiency.
• Hammer crushersare connected to the motor via V-belts. The height of the hammer crusher can be quickly adjusted by a hydraulic device to regulate the discharge particle size of crushed materials, meeting the needs of different customers.
  Benefits and roles of hammer crushers: The tooth heads adopt a modular design and are fixed to the crushing hammer with high-strength bolts, enabling targeted and efficient replacement of individual tooth heads.
  The crushing mode using crushing hammers is particularly effective for extra-large materials in open-pit mines. Hammer crushers are new-type crushers developed for large-particle materials, featuring wear resistance, large processing capacity, and long service life.

Structural Composition

The feeder breaker is composed of processed parts, cast parts, purchased components, and assembled parts. It is also made up of a chain conveyor and a crushing unit. The complete system of the feeder breaker achieves the integration of feeding and crushing functions.

The structural composition of the feeder breaker is centered around functional integration, primarily comprising five major modules:

Basic Frame System

Constructed from high-strength steel, it includes the frame, base, and side panels. The frame is equipped with reinforcing ribs to withstand impacts, while the base is fitted with shock-absorbing devices. The side panels integrate a flared feeding inlet and a discharge outlet, which seamlessly connect to subsequent conveying systems.

Crushing Unit

Divided into hammer-type and toothed roll types.

• Hammer-type

Comprises a rotor shaft, hammer frame, and hammer heads (made of high-manganese steel with adjustable gaps).

• Toothed roll-type

Consists of a driving roll and a driven roll (with spiral teeth or cutting teeth, and a built-in cooling system), adapting to the crushing needs of different materials.

Feeding and Conveying System

The chain conveyor (with drive sprockets, chains, and anti-stick hoppers) is responsible for material feeding. The pre-screening device is divided into a static grate (to intercept impurities) and a dynamic screen (to prevent material jamming), achieving pre-processing of materials.

Power and Transmission System

Driven by a motor-reducer combination, the power is matched according to working conditions. Power is transmitted via belts, gears, or couplings to ensure synchronous operation of crushing and conveying.

Wear-Resistant Protection Components

Key components (such as the inner wall of the crushing chamber and hammer heads) use wear-resistant liners, coatings, or composite materials to extend equipment lifespan and reduce maintenance costs. These modules work synergistically to ensure continuous and efficient production.

Core Working Principles

Feeder Breaker consists of chain conveyor and crushing unit, which realizes the combination of feeding and crushing functions.

Conveyor Parts

The materials are directly unloaded into the hopper by dump trucks, or unloaded into the hopper by bulldozers or loaders, and then When the drive device of feeder starts to run, the drive sprocket drives the chain to move horizontally in the conveying box and drags the material forward at the same time.

Crushing Unit

When the chain and the material through the rotary teeth roller in the crushing box, because the large material cannot pass through the specific space between the teeth roller and the base plate, the large material will be knocked, squeezed and stretched by rotating toothed rollers until broken into small materials which are allowed to pass through.

In general ,the feeder breaker can crushes the large materials(800mm-1500mm) into medium sizes(200mm-500mm).

Conclusion

Feeder breakers play a pivotal role in modern mining and material processing industries by integrating feeding, crushing, and conveying functions.

Their ability to handle large volumes of materials efficiently, coupled with specialized designs for wear resistance and adaptability to diverse materials, makes them indispensable for optimizing production flows and reducing operational costs.

Whether through pre-screening to enhance material quality or optional crushing modes to meet specific needs, feeder breakers continue to drive innovation in industrial crushing technology, ensuring sustainability and efficiency in resource utilization.