STEEL BELT CONVEYORS FOR SEVERE CONDITIONS since 1929

CEMENTI DELLA LUCANIA

THE CHALLENGE

The Client was looking for a trouble-free operation weighing feeder to handle hot clinker at about 400°C. The weighing feeder should be designed to operate without any problem at high temperature and with heavy loads, while providing excellent performance and accuracy (mostly ±1÷2% on the conveyed volume).

In 2002, Magaldi was awarded a contract for the design and supply of a weighing feeder for hot clinker conveying. The equipment was designed ad hoc for that specific application in order to meet the Client’s requirements.

 

THE CUSTOMER

Founded in 1892 by Michele Marroccoli, Cementi della Lucania SpA has been one of the main players in the cement industry in Italy.
In 2014, the Company was forced to close due to the economic crisis which hit the sector.

 

THE SOLUTION

From a rotary kiln, 45 t/h of hot clinker at about 400 °C were unloaded onto a Magaldi Superbelt®. The conveyor, 5 m long, transported the clinker to a Tsubaki bucket elevator installed by Magaldi under an exclusive license from Tsubaki.
At a height of 4 m, the material was unloaded onto a further Magaldi Ecobelt® conveyor. At the discharge of the Ecobelt® there was the weighing feeder, 3.5m long and 650 mm wide.
The weighing system was similar to a conventional weighing feeder placed under hoppers but, instead of a rubber belt or a vibrating feeder, it was equipped with the Magaldi Superbelt®. The latter can be easily converted into a weighing feeder by means of load cells installed on the supporting structure of the carrying idlers, whose signal is processed by a PLC along with a specific software. The size (length and width) of the weighing feeder depends on the layout specification and the required capacity. The actual feed rate is determined by integrating the belt speed, monitored by an encoder, and the weight signal given by the load cells. The controller compares the actual feed rate with the desired one and it adjusts the belt speed to deliver a constant feed rate.

 

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