Trommel Screen

Heavy-Duty Trommel Screen for Placer Mining and Aggregate Sizing

The Trommel Screen (or Rotary Trommel) is a highly efficient and durable mechanical screening machine used to separate materials by size. By feeding raw material into a rotating cylindrical drum covered with a screen mesh, it provides a simple, robust, and high-capacity solution for grading minerals and aggregates.

In the mineral processing industry, the Placer Mining Trommel is the absolute standard for pre-treatment. As the drum rotates, undersize material (the valuable fine slurry containing gold or heavy minerals) falls through the screen holes, while oversize barren rocks tumble to the end of the drum for discharge. This ensures only the perfectly sized material is sent to your Centrifugal Concentrators, Jigging Machines, or Spiral Chutes.

Whether you are processing alluvial gold, river sand, coal, or construction aggregates, our Trommel Drum Screen offers accurate grading, massive throughput, and a unique anti-clogging design that keeps your operation running smoothly.

Core Advantages of Our Trommel Screen

• Anti-Clogging Design: The continuous tumbling action, combined with optional high-pressure internal water spray bars or external cleaning brushes, ensures the screen mesh stays perfectly clear of sticky mud and wedged rocks.
• Heavy-Duty Construction: Built with a reinforced steel frame, heavy-duty gear/chain drive, and oversized bearings. It is engineered to absorb the shock of large rocks dumped directly from a loader or excavator.
• Multi-Layer Grading: We can customize the drum with concentric layers of screen mesh (e.g., inner coarse mesh to protect outer fine mesh) or sequential sections of different aperture sizes, allowing you to separate 2 to 4 different particle sizes simultaneously.
• Energy Efficient: By accurately rejecting large barren rocks early in the circuit, it drastically reduces the volume of material going to your downstream beneficiation equipment, saving you over 20% in total plant energy consumption.

Application Scenarios

The trommel screen is incredibly versatile and is widely deployed in:

• Placer Mining (Gold, Tin, Diamond): Separating valuable fine metallic sand from large barren river rocks to optimize the feeding conditions for gravity concentrators.
• Aggregate & Sand Washing: Classifying river sand, gravel, and crushed stone into specific commercial sizes.
• Coal Mining: Sizing lump coal and separating coal from gangue with minimal dust generation.
• Environmental & Recycling: Sorting construction waste, municipal solid waste (MSW), and compost.

Technical Parameters (GT Series)

Below are the standard specifications for our GT Series Trommel Screens. We offer full customization for screen mesh sizes, materials (Polyurethane, Manganese Steel, High-Carbon Wire), and multi-layer configurations.

Frequently Asked Questions (FAQ)