• Lightweight wagons
  • Robust and low-cost unloading station
  • Best choice for fine-grained bulk
  • High-capacity continuous discharge
  • Discharges tough-flowing materials at rates up to 25,000 tonnes per hour

HD – Helix Dumper

Our award-winning Helix Dumper (HD) is built for continuous, rolling discharge and is the wagon of choice for small fractions and tough-flowing commodities that are not suitable for bottom discharge.

Currently, there is no technology that can match the productivity of the Helix Dumper when it comes to unloading heavy fine-grained bulk goods at a high discharge rate. The Helix Dumper unloads even the stickiest bulk materials at rates up to 25,000 tonnes per hour.

No moving parts – no electricty

The Helix Dumper unloading station is a robust and low-cost solution that requires minimal maintenance. The discharge process is carried out at a smooth, even pace and is powered by the locomotive’s forward motion – the unloading station has no moving or motorised parts and requires no additional power supply.

When the Helix Dumper enters the unloading area, a wheel at the top of the wagon connects with the spiral-shaped rigid guide that constitutes the unloading station. As the wheel travels along the path of the guide, the chassis remains on the rails while the body of the wagon is rotated 148 degrees to dump its load. The rotation, along with the rounded shape of the wagon body, creates optimal conditions for efficient discharge of even the toughest concentrate materials.

A complete system for transport and unloading

When you buy a system from Kiruna Wagon, you acquire a complete solution for both transport and unloading. We consider the whole logistics chain and design systems for efficient transport at the right total capex and opex. We are one of very few companies to deliver both the wagons and the unloading station.

Optimised with high-strength steel

For minimised tare weight and maximised payload, the Helix Dumper is constructed in high-strength steel.

AAWS – Average Annual Wagon Speed

At Kiruna Wagon, we consider average annual wagon speed (AAWS) to be one of the most important key performance indicators. In the authentic case of Kaunis Iron’s ore transports from northern Sweden to the Port of Narvik in Arctic Norway, the HD system is designed to operate at 26.1 km/h AAWS. You are welcome to download our AAWS excel sheet and compare our numbers with those of your own fleet.

Helix Dumper brochure in Finnish:

Breakthrough Performance with the Helix Dumper System

Paper presented at the International Heavy Haul Association (IHHA) conference in Narvik, 2019, by Bengt Bolsöy, Senior Product & System Consultant at Kiruna Wagon. The paper compares the logistic performance of the Helix Dumper system (HD) with the traditional and commonly used Rotary Car Dumper solution (RCD).