... with an objective function. This process is repeated until convergence is reached. Mines Maintenance Mathematical modelling A mining production system should operate at a minimum acceptable level to accommodate safety and contractual commitments. Because of possible failure and disturbances...

... The findings of the optimal replacement time resulted in higher mill productivity, lower specific power consumption, reduced spare parts cost and reduced production loss for unjustified mill stoppages. Originality/value Develops a mathematical model for cement mill shell liners' life to determine...