- مبلغ: ۸۶,۰۰۰ تومان
- مبلغ: ۹۱,۰۰۰ تومان
Blasting is the most frequently used means of quarrying and mining rock excavation, and the quality of the fragmentation of rock mass is a major concern of any blasting operation (Latham and Lu 1999). The prediction and assessment of the rock size distribution produced by blasting are important concerns in understanding the blasting process. The rock fragmentation distribution influences downstream processes such as load and haul rates, crushing and grinding performance, and also ore recovery in beneficiation processes (Michaud et al. 1997). In the studies at Que´bec Cartier Mines, MacKenzie (1966) found that the efficiency of all the subsystems of mining is dependent on the fragmentation. Additionally, uniform particle size distribution also eliminates the need for secondary blasting of large boulders.