Heavyduty screw conveyors for waste material

Heavy-duty screw conveyors for waste material designed and manufactured by BEMA.

The heavy‑duty screw conveyor project showcases how BEMA designs and manufactures robust material‑handling solutions for highly abrasive waste streams. The conveyors in this case are engineered specifically for transporting waste from mineral wool production, a process that places extreme demands on durability, reliability, and wear resistance. By combining Hardox screw flights with a fully customized mechanical design, BEMA delivers a long‑lasting system capable of operating under continuous load and harsh industrial conditions.

Project Background and Customer Requirements

The customer needed a solution that could efficiently extract and transport mineral‑wool waste from a silo and move it into downstream handling equipment. Mineral‑wool waste is fibrous, abrasive, and often irregular in density, which makes it difficult to handle with standard conveying equipment. To meet these requirements, BEMA engineered two heavy‑duty screw conveyors built as double‑screw units positioned directly beneath the silo. This configuration ensures stable material flow, prevents bridging, and provides the torque capacity needed to move dense waste material.

Precision Engineering Through 3D Scanning

A key part of the project was ensuring that the conveyors fit perfectly into the customer’s existing plant layout. After receiving the initial layout drawings, BEMA conducted an on‑site visit and performed a full 3D scan of the installation area. This scanning process allowed BEMA to create an accurate digital model of the facility and position the conveyors with millimeter precision. The 3D model eliminated uncertainties, reduced installation risks, and ensured that the final design integrated seamlessly with surrounding structures and equipment.

Design and Manufacturing of Heavy‑Duty Conveyors

Based on the layout and scanning data, BEMA developed a complete mechanical design tailored to the customer’s process. The conveyors were manufactured entirely at BEMA’s facilities in Haderslev, ensuring full control over quality and production flow. The screw flights were produced in Hardox, a wear‑resistant steel ideal for abrasive waste materials. Hardox flights significantly extend service life compared to standard steel, reducing maintenance intervals and improving operational uptime. The heavy‑duty construction includes reinforced troughs, robust bearings, and drive components selected to withstand continuous operation in demanding environments.

Testing, Quality Assurance, and Global Delivery

Before shipment, each screw conveyor underwent a full test run at BEMA’s workshop. This ensured that the machines operated according to specification, with correct torque, smooth rotation, and stable material‑handling performance. Testing at this stage minimizes commissioning time and ensures that the equipment is ready for immediate integration upon arrival. After successful testing, the conveyors were carefully packed into containers for overseas transport. BEMA handled the entire logistics process, ensuring safe delivery and providing the customer with a complete documentation package for future service, maintenance, and compliance.

Why This Case Demonstrates BEMA’s Strength

This project highlights BEMA’s ability to deliver turnkey heavy‑duty screw conveyor systems for challenging industrial environments. From 3D scanning and custom engineering to in‑house manufacturing, testing, and global delivery, BEMA provides a fully integrated solution. The use of Hardox screw flights ensures maximum durability, while the double‑screw configuration guarantees reliable waste extraction from the silo. The result is a robust, long‑life conveying system designed to keep production running efficiently with minimal downtime.

Read about another case for heavy-duty screw conveyors here

FAQ on Heavy‑Duty Screw Conveyors for Waste Material

1. What makes these screw conveyors suitable for highly abrasive waste materials?

The conveyors are equipped with Hardox screw flights, a wear‑resistant steel designed to withstand continuous abrasion from mineral‑wool waste. Hardox maintains structural strength under heavy load, ensuring long service life and reducing maintenance needs in demanding waste‑handling environments.

2. How does BEMA ensure the conveyors fit precisely into the customer’s existing plant layout?

BEMA performs an on‑site 3D scan of the installation area to create an accurate digital model of the facility. This allows the engineering team to position the conveyors with millimeter precision and eliminate uncertainties before manufacturing begins.

3. What steps are taken to verify performance before delivery?

Each conveyor undergoes a full test run after assembly at BEMA’s facility. This ensures correct operation, stable rotation, and compliance with all mechanical specifications before the equipment is shipped to the customer.

4. How are the conveyors prepared for international shipment?

After successful testing, the conveyors are packed into containers and prepared for overseas transport. BEMA also provides a complete documentation package to support installation, service, and long‑term maintenance at the customer’s site.