Investigating the influence of mineral characteristics on induced effect of high-voltage pulse discharge by synthetic minerals

• Published in: Minerals engineering Vol. 153; p. 106380
• Main Authors: Yan, Guanghui, Zhang, Bo, Zhao, Pengfei, Zhuang, Shiming, Zhou, Enhui, Zhao, Yuemin
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.07.2020
• Subjects: Breakage rate; High voltage pulse; Induced effect; Relativity; Synthetic minerals; Synthetic minerals; Breakage rate; Induced effect; High voltage pulse; Relativity
• ISSN: 0892-6875; 1872-9444
• DOI: 10.1016/j.mineng.2020.106380

[Display omitted] •The induced effect of inter-granular and intra-granular on high voltage pulse discharge are explored.•Main influencing factors and the tendency of induced effect are obtained.•The induced effect is relative and identical with the dielectric difference.•The induced effect is reflected by the breakage rate and the progeny size distributions after breakage. Synthetic minerals consisting of cement with different added components were used to investigate the breakage effect induced by high-voltage pulses in metallic and non-metallic components. Both inter- and intra-mineral induced effects were investigated. The results showed that the main determining factors on the induced effects were mineral properties and distance from the electrodes. For single-ball embedded synthetic minerals, the induced effect was mainly affected by the ball size and location in synthetic minerals. For multi-ball embedded synthetic minerals, there were no obvious differences in the induced effects, although the number of balls does affect the direction and density of current beams. The induced effect was mainly affected by the dielectric differences in the mineral components and it showed the characteristic of relativity. Its breakage behavior is mainly influenced by minerals associated with him. The induced effect was also shown by non-metallic components under specific conditions.