Blasting influence on comminution

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ABSTRACT

The total comminution and processing of hard ores to concentrate consumes a large amount of electrical energy and is theatrically reviewed. In the past two decades, research and case studies have demonstrated a beneficial relationship between explosive consumption and the grindability of ores. Blasting energy and the distribution of that energy appears to affect subsequent comminution beyond crushing. This experience has prompted researchers to attempt to understand and quantify the mechanisms involved. This paper discusses the relationship of drilling and blasting practices to fragment size, particle internal micro cracking, and the energy consumption and throughputs for crushing and grinding.

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