Evaluating increasing capacity of steel hot rolling line to 4.2 million ton per year

ABSTRACT

There is complex logistic operation to transfer slabs which are being produced with continuous casting machines to hot rolling in MobarakehSteelComplex. First the slabs should get cooled and then there will be quality control and scarf operation is needed for some of them. Then slabs get transferred via conveyor to warehouse & then transferred to 4 furnaces. The conveyor is bottleneck. The simulation model proved if a parallel conveyor gets used to increase transferring rate because next warehouse will get bottleneck, it will not increase production. Then Hot Charge technology gets evaluated which there is no need to cool the slabs & then again making them hot. So the slabs will be transferred to furnace area with out losing temperature & considerable energy will be saved. Simulation has been used to evaluate what kind of facility is needed & how to assigning the furnaces to Hot Charge & cooled slabs.