Hot Sand Conveying
Magaldi Ecobelt®

The Magaldi Superbelt® is a steel belt made of partially overlapping steel pans bolted onto a steel double-wire mesh, that forms a virtually sealed conveyor belt.
The patented method of connecting the pans to the mesh belt leaves all elements free to thermally expand in any direction without permanent deformation. As a result, the Superbelt® withstands temperatures higher than any other known conveyor. Its design is based on a multi-link concept. Even if the double-wire mesh is severely damaged, the conveyor continues to run without sudden failures and the plant operators can schedule its maintenance according to operation needs.
Moreover, the steel belt is supported by carrying idlers across its entire width in order to withstand heavy mechanical loads. Next to the loading points, the idlers can be closely spaced or mounted onto a shock absorber frame.
The Superbelt® conveys materials very slowly without any vibrating or shaking, thus no dust is released externally and noise is at minimum levels. This contributes to a healthy and more comfortable working environment for plant operators.
In the foundry sector, the Magaldi Superbelt® “E type” is designed to be completely enclosed in a steel casing, suitable for preventing dust dispersion to the environment. This is the so called Magaldi Ecobelt® conveyor, generally used for hot sand conveying.

The Ecobelt® is equipped with a simple mechanical self-cleaning device, that removes the fine residuals from the bottom of the casing, and the O-chain®, which is a chain conveyor enclosed in an independent casing and tailored around the Ecobelt® tail section. Its function is to receive the fine residuals, collected by the self-cleaning device, and to reload them onto the Ecobelt®.
The supports, both of the carrying and return idlers, are installed external to the casing and are equipped with special seals to protect the internal bearings from heat and dust, thus ensuring continuous operation and avoiding dust dispersion to the environment.

The main advantages of the Magaldi Ecobelt® as applied for hot sand conveying are: 

  • contrarily to conventional vibrating technologies, the Ecobelt® does not generate or disperse any dust to the environment, thus effectively contributing to lowering the crystalline silica problem in foundries. Usually installed below ground level, it substantially reduces the cleaning workload in foundries;
  • the Ecobelt® is capable of steep inclinations, thus reducing the engineering interventions usually required underneath the shakeout machines;
  • the Ecobelt®, completely enclosed in a steel casing, is equipped on the bottom with a self-cleaning device to recover any sticky sand;
  • low demand in maintenance and spare parts if compared to pneumatic conveying systems;
  • noise and power demand are at minimum levels compared to alternative solutions.