Sbm Crushing Plant In Iran

By Author: Jiasteven
Total Articles: 50
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This plant for the Abyek Cement Company is just one example of a considerable number of primary crushing plants already supplied to the Islamic Republic of Iran. The cement works in question is being extended to produce 8,500 tons of clinker per day. The crushing plant will process two components - marl (60%) and limestone (40%). The plant has been designed to handle a total throughput of 2,400 tons/hr. The desired product as feed for the downstream vertical shaft mill is around 90% minus 75 mm or 99.5 % minus 100 mm. The marl is characterised by a high Si02 content and a sometimes high H20 content of up to 10%.
Both components are fed by dump truck into separate hoppers of 400 m3 and 250 m3 capacity respectively for the marl and limestone. The raw material is extracted from the hoppers by apron feeders fitted with caterpillar chains. After the limestone has been fed onto the marl apron conveyor, scalping of the fines minus 80 mm is effected by SBM roller grate (wobbler). In this way, sticky material fines by-pass the impact ...
... crusher, increasing the operating safety and at the same time reducing the necessary design size of the crusher and the wear rate thereof. The composition of the marl/limestone mixture is measured online downstream of the impact crusher. On the basis of the measuring results, the speed of the two electric motor-driven apron conveyors is controlled so that the mixture is always in accordance with the requirements. The crushing of the two components together in the Impact crusher results in an intensive mixing process which relieves the downstream mixing bed.
The main plant component is the hydraulically controlled impact crusher, which has a rotor width of 2,500 mm and a diameter of 2,500 mm and is the second-largest Impact crusher available. It has an installed power rating of 2,200 kW. Integrated into the hydraulic cylinders of the crusher is a gap measuring system which allows the gap settings to be adjusted continually via the plant control. Servicing and adjustment is effected by push- button, so that the operation does not need to be interrupted, guaranteeing a correspondingly high degree of availability.