Yamama Saudi Cement Company counts on Aumund machines

Yamama Saudi Cement Company, one of the biggest cement producers in Saudi Arabia, will start up two turnkey clinker production lines in 2018 at a new site to the south west of the capital city, Riyadh. The two lines, with a combined capacity of 20 000 t/d, are being built by ­thyssenkrupp Industrial Solutions, a subsidiary of thyssenkrupp. In 2016, Aumund Fördertechnik GmbH won the order to supply the complete clinker conveying equipment for both lines, including 16 trough chain conveyors for the transport of dust.

The large supply package for Yamama Saudi Cement Company includes 29 chain bucket elevators and 18 belt bucket elevators, in heavy-duty and lighter designs, for these two lines in the Gulf. For raw meal, Aumund belt bucket elevators will be used. Filter dust will be conveyed by Aumund chain bucket elevators optimal designed for low capacity.

Two Aumund double chain bucket elevators with a capacity of 2300 t/h were ordered per line as recirculating bucket elevators in the cement mill. Double chain bucket elevators are specially designed by Aumund for capacities above 1300 t/h, by combining two standard central chain bucket elevators. Both bucket strands run over the same drive shaft which is held by pillow block bearings and driven by double drive units. The symmetrical distribution of weight means that the chain and drive shaft will have long lifetimes. There is no mechanical connection between the two bucket strands. The chain wheels and tension shafts have separate bearings so that any lengthening of a chain that might occur after a long running time can be adjusted independently of the other.

The supply package for the two lines also includes six Aumund pan conveyors as well as various flat gates, silo discharge gates, telescopic chutes and cleaning conveyors.

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