ENERGY efficiency is the key to success at modern mines and quarries and the most potential for energy and cost savings can be realised in the comminution process, where ore is ground and crushed into smaller particles, say diversified engineering and mining group Metso. The company's HRC 8000, which it says is the largest fully operating high-pressure grinding roll (HPGR) in the world, provides an energy efficient solution for the mining industry, The HRC 3000 is the result of four vears of close collaboration between Metso and US-based diversified miner Freeport-McMoRan (FCX).
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