Double Roll Crusher
Double Roll Crushers typically follow a primary or secondary crusher and are used for secondary and tertiary reduction of various minerals, such as ROM coal, clean coal, limestone, gypsum, trona, shale, bauxite, oil shale, coke, salt, lime, glass, kaolin, brick, shale and wet, sticky feeds.
Specifications
2-stage and 3-stage
Capacity: 20 TPH to 500 TPH
Feed Size: 300 - 700 mm and below
Output Size: 40 mm and below
Price Range: INR 1.0 - 5.5 crore
Power Source: Electricity or diesel generators
Who can use it?
Double Roll Coal Crushers are commonly used in the mining and coal industries for crushing coal and other materials such as limestone, gypsum, trona, shale, bauxite, oil shale, coke, salt, lime, glass, kaolin, brick, shale and wet and other materials.
Benefits of the crusher?
Durable Construction: Robust design ensures long-lasting performance and minimal maintenance.
Adjustable Rollers: Easily adjustable rollers for customizable output size.
Low Dust Emission: Designed to minimize dust production for a cleaner working environment.
Compact Design: Space-saving design ideal for various industrial applications.
Easy Maintenance: Simplified maintenance process with easily accessible components.
Consistent Output: Delivers uniform product size for reliable processing.
01
Robust Construction
02
Low Dust Emission
03
Adjustable Product Size
04
Cost-Effective Operation
05
Enhanced Safety Features
Why buy from HPPA?
ITD Cementation
"HPPA's Double Roll Coal Crusher revolutionized our mining operations, increasing throughput by 30% and reducing downtime by 25% in the coal mining industry."
Tantia Constructions
"Using HPPA's crusher in our cement manufacturing plant improved particle size distribution by 20%, outperforming competitors with its 98% reliability rate."
How does the crusher work?
Double roll coal crushers are widely used in the coal processing industry to crush coal into small sizes for further utilization. Here's a structured overview of how double roll coal crushers work:
Feed Hopper: Raw coal materials are fed into the crusher through a hopper or feeder chute. The feeder distributes the material evenly onto the rolls of the crusher.
Roll Crusher Components:
Crushing Rolls: The crushing rolls consist of the roller bodies, complemented with crushing rings or crushing shells. The rolls are mounted on the crushing plate (frame).
Drive Mechanism: A gearbox and motor drive the rolls to rotate in opposite directions. This ensures that the material is pulled into the rolls and crushed efficiently.
Adjustment Mechanism: Typically, there are springs or hydraulic cylinders that apply pressure on the rolls to maintain a gap between them. This gap determines the size of the crushed product.
Crushing Process:
Initial Feed: Raw coal is fed between the rolls and is crushed by the combination of compression and shear forces exerted by the rolls.
Compression: The rolls compress the coal against a crushing plate which is fixed on the crusher frame.
Shearing: As the rolls rotate, the coal particles are pulled into the crushing zone between the rolls and the crushing plate, where they are crushed into smaller pieces.
Discharge:
Product Size Control: The gap between the rolls can be adjusted to control the size of the crushed product.
Discharge Chute: The crushed coal exits the crusher through a discharge chute, where it is collected or conveyed to a further process.
Overall, double roll coal crushers efficiently crush coal into specified sizes using a combination of forces and adjustments to control product size, making them essential in coal processing operations.
Select the crushers specifications
Questions about the crusher
How do Double Roll Crushers differ from Single Roll Crushers?
Double Roll Crushers have two rolls that rotate in opposite directions, crushing the material between them. Single Roll Crushers have a single roll that rotates towards a fixed plate or breaker plate.
What are the primary advantages of using a Double Roll Crusher?
Double Roll Crushers offer higher reduction ratios and produce finer product sizes compared to Single Roll Crushers. They are also more versatile, handling a wider range of materials and sizes.
Can Double Roll Crushers handle hard materials like granite or basalt?
Yes, Double Roll Crushers are capable of handling hard and abrasive materials like granite, basalt, and quartzite, depending on the specific design and tooth configuration.
How does the size of feed material affect the performance of a Double Roll Crusher?
The feed size affects the capacity and efficiency of the crusher. Smaller feed sizes generally result in finer product sizes and higher capacity, while larger feed sizes may reduce capacity and increase wear.
Are Double Roll Crushers suitable for crushing abrasive materials?
Yes, Double Roll Crushers can be customized with hard-facing to handle abrasive materials effectively. They are designed to withstand high wear conditions typical of abrasive feed materials.
What safety features are typically included in Double Roll Crushers?
Safety features may include emergency stop buttons, guards around moving parts, and interlocks to prevent operation when guards are open. Some models also include automatic lubrication systems for safer maintenance.
How do you maintain a Double Roll Crusher for optimal performance?
Regular maintenance includes checking and adjusting the gap between the rolls, inspecting wear parts, lubricating bearings, and replacing worn components as needed. Following manufacturer guidelines is crucial for optimal performance.
What are the typical applications where Double Roll Crushers are used?
Double Roll Crushers are commonly used in coal, limestone, cement, potash, rock, sulfur, lignite, pyrite, and other materials where minimum fines are desired.
How do you adjust the gap between the rolls on a Double Roll Crusher?
The gap between the rolls is adjusted manually or hydraulically, depending on the crusher design. This gap determines the product size and can be set to achieve the desired reduction ratio.
What factors should be considered when selecting between a Double Roll Crusher and other types of crushers?
Factors include the material properties (hardness, abrasiveness), desired product size, capacity requirements, operational costs, and maintenance needs. Double Roll Crushers are favored for their high reduction ratio and minimal fines production in certain applications.