McLanahan Roll Crushers

McLanahan Roll Crushers

Reliable Crushing and Size Reduction for Mining and Mineral Processing

McLanahan Roll Crushers are compression-type crushing machines designed to reduce friable and moderately hard materials to a controlled product size.

Roll Crushers are available in different configurations to suit a wide range of applications, including primary, secondary and tertiary crushing. Their relatively low-speed crushing action makes them suitable for applications where controlled size reduction, high throughput and reduced generation of fines are important.

Depending on the application, McLanahan Roll Crushers can be configured as single-roll, double-roll or triple-roll crushers.

How McLanahan Roll Crushers Work

Roll Crushers reduce material by compressing it between rotating roll surfaces and a crushing surface or between two counter-rotating rolls.

Material enters the crusher through the top of the crushing chamber. As the rolls rotate, they draw the material into the crushing zone and apply compressive forces that break the material into smaller pieces.

The crushed material passes through the crusher once it reaches a size smaller than the selected crushing gap.

The roll configuration, roll diameter, roll speed and crushing setting are selected according to the feed material and required product size.

Single-Roll Crushers

Single-Roll Crushers use a rotating roll working against a stationary crushing plate.

As material enters the crushing chamber, the rotating roll grabs and pulls the feed into the crushing zone. The material is then compressed and broken against the crushing plate.

Single-Roll Crushers are particularly suitable for primary crushing applications where large feed material needs to be reduced to a controlled product size.

Double-Roll Crushers

Double-Roll Crushers use two counter-rotating rolls.

The rolls draw the material between them and apply compression, breaking the material into smaller particles.

The gap between the rolls controls the product size, while the roll design and tooth configuration can be selected according to the material and application.

Double-Roll Crushers can be used for primary, secondary and tertiary crushing depending on the configuration.

Triple-Roll Crushers

Triple-Roll Crushers incorporate three crushing rolls to provide additional stages of size reduction within a single machine.

They can be used when a greater reduction is required or where multiple crushing stages need to be combined into one compact unit.

The configuration of each roll can be selected to achieve the required product size and reduction ratio.

Product Size Control

Product size is primarily controlled by the crushing gap or Closed-Side Setting (CSS).

A smaller gap generally produces a finer product, while a larger gap produces a coarser product and can increase throughput.

The appropriate setting should be selected according to the required product size, feed characteristics and overall crushing circuit.

High Reduction with Controlled Fines

Roll Crushers provide controlled compression crushing and can produce a relatively uniform product with less excessive fines generation than some high-speed impact crushing applications.

The actual reduction ratio depends on the crusher configuration, feed size, material characteristics and required product size.

Handling Sticky and Wet Materials

Roll Crushers can be suitable for certain wet or sticky materials, depending on the material characteristics and crusher configuration.

Special roll designs and configurations can help reduce material build-up and maintain continuous operation.

Application testing and proper equipment selection are recommended for highly sticky or difficult materials.

Wear Components

Roll surfaces, teeth and other crushing components are exposed to continuous impact, compression and abrasion.

Depending on the crusher design, replaceable wear components can be used to maintain crushing performance and simplify maintenance.

The appropriate wear material and tooth configuration should be selected based on material hardness, abrasiveness and other application conditions.

Applications

McLanahan Roll Crushers are suitable for a variety of applications, including:

• Mining

• Mineral processing

• Coal processing

• Aggregates

• Quarrying

• Primary crushing

• Secondary crushing

• Tertiary crushing

• Material size reduction

Typical materials include:

• Coal

• Salt

• Gypsum

• Phosphate

• Limestone

• Potash

• Glass

• Soft and moderately hard minerals

• Other friable materials

Application suitability depends on feed size, hardness, abrasiveness, moisture, material density and other characteristics.

Key Features & Benefits

• Single-, double- and triple-roll configurations

• Primary, secondary and tertiary crushing options

• Controlled compression crushing

• Adjustable product size

• Low-speed crushing action

• High-throughput capability

• Controlled generation of fines

• Replaceable wear components

• Multiple roll and tooth configurations

• Robust construction

• Suitable for a wide range of mining and mineral applications

• Compact crushing arrangement

• Designed for reliable operation and maintenance access

Factors Affecting Roll Crusher Performance

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

• Feed size

• Feed gradation

• Material hardness

• Material abrasiveness

• Moisture content

• Bulk density

• Roll speed

• Roll diameter

• Crusher setting

• Tooth configuration

• Installed power

• Feeding method

Consistent feed distribution and proper crusher adjustment are important for achieving stable capacity, product sizing and wear life.

Selecting the Right Roll Crusher

The appropriate Roll Crusher should be selected based on:

• Material type

• Maximum feed size

• Required product size

• Required capacity (TPH)

• Material hardness

• Abrasiveness

• Moisture content

• Bulk density

• Required reduction ratio

• Crushing stage

• Installation arrangement

Cube Solutions can evaluate your application requirements and assist in selecting the appropriate McLanahan Roll Crusher configuration.

McLanahan Roll Crushers from Cube Solutions

As a McLanahan agent, Cube Solutions provides crushing 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 Roll Crusher application and determine the most suitable configuration for your operation.