McLanahan Rotary Breakers

McLanahan Rotary Breakers

Primary Crushing, Sizing and Cleaning in One Machine

McLanahan Rotary Breakers are robust primary crushing and sizing machines designed to process large quantities of ROM (Run-of-Mine) material.

Unlike conventional crushers, Rotary Breakers combine size reduction, screening and material cleaning in a single rotating drum. This makes them particularly effective for applications where the feed contains unwanted rock, refuse, dirt or other contaminants that need to be separated from the valuable material.

Rotary Breakers are widely used in coal processing and other applications involving friable materials.

How McLanahan Rotary Breakers Work

Material is fed into the rotating cylindrical drum through the feed end.

As the drum rotates, lifter plates inside the drum pick up and drop the material. The repeated impact breaks larger pieces of friable material into smaller particles.

At the same time, smaller material passes through openings in the rotating drum while larger rock and oversize material continue toward the discharge end.

This continuous rotation provides simultaneous breaking and sizing, allowing the Rotary Breaker to separate material according to size while reducing the need for additional equipment.

Breaking and Sizing

A major advantage of the Rotary Breaker is its ability to combine primary size reduction and screening.

As material travels through the rotating drum:

• Large pieces are lifted and dropped, creating impact that breaks friable material.

• Correctly sized material passes through the openings in the drum.

• Oversized material continues through the drum and is discharged separately.

This process produces a controlled product size and can reduce the amount of oversized material entering downstream equipment.

Removing Rock and Contaminants

Rotary Breakers can also help separate unwanted rock and other contaminants from friable materials.

In coal applications, for example, the process can help remove rock, refuse and other unwanted material while simultaneously breaking and sizing the coal.

This can improve the quality of the product and reduce the amount of unwanted material entering the downstream processing circuit.

Drum and Screen Design

The rotating drum is fitted with replaceable breaker plates, lifters and screen sections designed for the specific application.

The opening size and arrangement of the screen sections influence the size of material that can pass through the drum.

Wear-resistant components are used in areas exposed to continuous impact and abrasion, and different configurations can be selected according to the characteristics of the feed material.

Handling Large ROM Feed

Rotary Breakers are designed to accept large, irregular feed material directly from mining or material-handling equipment.

The rotating drum provides continuous material movement while the breaker action reduces oversized friable material.

This makes Rotary Breakers particularly suitable for primary processing of ROM materials where large feed sizes and high throughput are required.

Applications

McLanahan Rotary Breakers are commonly used in:

• Coal processing

• Mining

• Mineral processing

• ROM material handling

• Primary crushing

• Material sizing

• Coal cleaning

• Removal of rock and refuse

• Other friable material applications

Typical materials include:

• Coal

• Lignite

• Oil shale

• Salt

• Gypsum

• Other friable materials

Application suitability depends on material characteristics, including hardness, abrasiveness, moisture, feed size and the amount of unwanted rock or contaminants.

Key Features & Benefits

• Combines breaking and sizing in one machine

• Primary size reduction

• Simultaneous screening during crushing

• Helps remove rock and unwanted contaminants

• Suitable for large ROM feed

• Continuous material handling

• Robust rotating drum design

• Replaceable breaker and wear components

• Replaceable screen sections

• Multiple drum and screen configurations

• High-throughput capability

• Can reduce the need for separate primary crushing and screening equipment

• Suitable for demanding mining applications

• Designed for reliable operation and maintenance access

Factors Affecting Rotary Breaker Performance

Actual capacity and product size depend on several factors, including:

• Feed size

• Feed gradation

• Material hardness

• Material friability

• Material abrasiveness

• Moisture content

• Bulk density

• Drum speed

• Drum diameter

• Screen opening size

• Breaker configuration

• Feed rate

• Installed power

Proper selection of the drum, breaker components and screen openings is important for achieving the required capacity and product size.

Selecting the Right Rotary Breaker

The appropriate Rotary Breaker should be selected based on:

• Material type

• Maximum feed size

• Required product size

• Required capacity (TPH)

• Material bulk density

• Material hardness

• Friability

• Abrasiveness

• Moisture content

• Percentage of unwanted rock or contaminants

• Required separation efficiency

• Installation arrangement

Cube Solutions can evaluate the application requirements and assist in selecting the appropriate McLanahan Rotary Breaker configuration.

McLanahan Rotary Breakers from Cube Solutions

As a McLanahan agent, Cube Solutions provides crushing, sizing and mineral processing solutions for customers in Egypt and the region.

Our services include equipment selection, application evaluation, technical support and supply of McLanahan equipment.

Contact Cube Solutions to discuss your Rotary Breaker application and determine the most suitable configuration for your operation.