Per: GUSTAVO BAUMGRATZ DE OLIVEIRA (samarco mineração), Kellerson Fernando Peixoto Santos (samarco mineração), Ataide José Dias (samarco mineração), Juliano Cunha (samarco mineração)
Abstract:
The Samarco Crushing area (Crushing 03), in the Germano Mining Complex, is responsible for one of the stages of the comminution process of iron ore mined in its mines. Located in this production process, after mineral extraction and before the Concentration Plant (C3), it is made up of a set of Crushers, Vibrating Screens and Belt Conveyors that, together, operate to reduce the granulometry of the mined ore to technically adequate levels. to subsequent processing and concentration processes.
In a mining company, in order to maintain high quality standards and safe operation, at low costs, capable of guaranteeing market competitiveness, its equipment requires high robustness and operational reliability. Samarco's Crushing 03, the target of the study presented in this report, showed instability in reliability, with a recurrence of scheduled corrective maintenance and, consequently, negative impacts on its physical availability, with no tendency to change. To identify and act to resolve this instability, work based on the PDCA methodology was conducted by a multidisciplinary technical team that, with tool discipline and a robust action plan, made it possible to achieve good results and exceed the target of increasing availability. of Crushing 03 of 1.1% in seven months of work. In addition to the increase in physical availability, avoided losses exceeded R$78MM.