Influência das características do ROM no dimensionamento de equipamentos de fragmentação – britagem

Abstract

Demand for equipment to maintain acceptable efficiency and deterioration over the life of a mine is the reality of the developers / equipment suppliers and their customers. For the crushing operations, this quest is even more evident since these equipment are known to be big, expensive and if it be poorly sized it can raise operating costs, lower the plant's productivity besides currently are the largest energy consumers in the mineral processing plants. To achieve a balanced performance during the extraction of the whole ore mine, it’s necessary have a detailed knowledge of the mineral raw material to be processed in the ore processing plant and the equipment available in the market for right-sizing. Another important point to keep efficiency at a satisfactory level, would be the development of new equipment using new technologies expanding the coverage in regard to service to a wider range of ores, hardnesses and grain sizes in order to fill the gaps opened by changes in the characteristics throughout the extraction. At this work will be addressed a changing situation in ROM’s characteristics during the extraction of a mine to evidence the influence that these changes have on efficiency, wear and aspects of the fragmentation equipment. The fragmentation mechanisms, the operation principles and the energy aspects related to them will be addressed.