Blasting Fragmentation Study Using 3D Image Analysis of a Hard Rock Mine

Rock blasting with explosives is the first stage of rock fragmentation and plays a key role in results mining chain. Fragmentation optimization achieved by considering energy efficiency explosive, optimal distribution explosive rocky mass, programmed controlled release during blasting. The quality usually performed using tools that estimate sizes fragments via analysis two- or three-dimensional images. This article presents study very compact itabirites, based on four tests, different way from conventional design. was PortaMetricsTM tool, compared Kuznetsov Rosin–Rammler particle size model, to compare reliability this tool. Finally, mine productivity after estimated obtained tests. model presented idealistic technical parameters used equations. However, tool suggests good performance for preliminary evaluation blast