crushing plant Description
HAZEMAG & EPR GmbH has supplied the Argentine company Cementos Minetti in Cordoba not only with a new primary crushing plant but also a secondary crushing plant with screen . Cementos Minetti is part of the Holcim Group.
The crushing plant essentially comprises a feed hopper, a rugged apron feeder and an impact crusher . The raw material is brought by dump truck to a 160 m³ capacity hopper, from where it is extracted by a heavy-duty apron conveyor with a variable drive. The impact crusher is fitted with the patented HAZEMAG GSK-type rotor, an extremely robust, heavy-duty cast steel unit.
As the limestone is a particularly hard and abrasive material which results in extremely high wear rates, it puts great demands on the wear parts of the crusher. Beside selection of a big size GSK rotor, one specific measure taken to prolong the life of the blow bars of the rotor was to increase their mass to a maximum, which naturally resulted also in a higher moment of inertia of the rotor supporting the crushing process.
During the handling of the project, HAZEMAG was requested to bring forward the delivery date of the equipment following a sudden rise in the demand for cement. This request was met thanks to speedy re-disposition within the manufacturer’s own fabricating facilities. As a result the fabrication of plant components could be brought forward so that they could be dispatched separately in advance. In this way, however, the plant parts were made available on site punctually to fit in with the progress of erection of the plant. The final component to be delivered ahead of time was the rugged GSK rotor, which had to be lowered by crane into the crusher.
Crushing Plant Technical Data
Feed material: Limestone
Feed size: max. 1,500 x 1,200 x 1,000 mm
Plant capacity: 1,100 t/h
Apron feeder: Width: 2.5 m, length: 13.1 m
Spillage Conveyor: Width: 2.5 m, length: 13.1 m
Crusher: HAZEMAG Impactor Type AP-PM 2225
Rotor: GSK 2225
Installed drive rating: 1,250 kW
Crusher product: 95 % < 75 mm