| 1. |
- Bearman, Richard, et al.
(författare)
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Crushers - An Essential Part of Energy Efficient Comminution
- 2011
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Ingår i: METPLANT 2011 - Metallurgical Plant Design and Operating Strategies. - 9781921522444 ; , s. 66-85
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Konferensbidrag (refereegranskat)abstract
- The importance of crushers in the mining industry declined with the predominance of SAG based circuits, butthe move to consider more energy efficient circuit has caused the industry to re-consider the role of crushers.To fully understand how crushers can contribute to optimizing the energy application in comminution circuits,detailed models of process performance are required. Such models need to take into account themechanical design factors and how the crusher performance changes in response to feed conditions, thecontrol strategy utilized and the wear of the crusher liners.It is also critical to analyze the total circuit, not just the individual crushers. To fully understand theperformance of the entire circuit, dynamic simulation should be applied. Without the holistic understandingof the total circuit and the incorporation of transient effects, the full circuit performance cannot be adequatelydetermined and the true energy picture will not be quantified.Based on detailed mechanistic modeling of crushers by the authors and the application of dynamicsimulation, the opportunities to optimize the use of crushers for energy efficiency are examined
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| 2. |
- Evertsson, Magnus, 1967, et al.
(författare)
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Investigation of Interparticle Breakage as Applied to Cone Crushing
- 1997
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Ingår i: Minerals Engineering. - 0892-6875. ; 10, s. 199-214
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Tidskriftsartikel (refereegranskat)abstract
- The breakage of material in cone type gyratory crushers is traditionally regarded as relying upon single particle breakage. In the last ten years the emphasis has shifted with manufacturers trying to generate higher degrees of interparticle breakage. Increasing the degree of interparticle crushing is claimed to improve crushing efficiency and product shape. The current study uses form conditioned crushing tests (geometry controlled compression) to investigate how multiple particles respond to crushing loads. By variation of test parameters the breakage characteristics of a rock material can be determined and compared to traditional single particle crushing. The selection function, S (probability of crushing a single particle), seems to be related to the ratio between stroke and bed height, s/b, with a second order polynomial in s/b. An analysis of a given crusher chamber gives selection values in the range 0.05
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