Characterization of the susceptibility of ore particles to breakdown in high voltage pulse breakage and the influencing factors

• Breakdown delay time (Td) is a more suitable indicator than breakdown strength (Eb) for characterizing ore particle susceptibility to electrical breakdown in HVP breakage. • A probabilistic model based on the Weibull distribution effectively describes the relationship between breakdown probability and Td. • Regression analyses reveal significant influences of operating parameters and particle properties on Td and size reduction degree in HVP breakage. • The developed models show potential for predicting metallic mineral content and HVP breakage degree from operational and material parameters.