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为了研究静载荷作用下磷矿石多颗粒的破碎规律,用岩石破裂过程分析系统RFPA2D建立了在静载荷作用下多颗粒磷矿石在破碎腔内破坏的数值模型,分析探讨了静载荷和破碎腔的约束作用对磷矿石多颗粒试样的破碎效果和能量消耗的影响。数值模拟结果表明,静载荷破碎多颗粒磷矿石时,在破碎腔中间的磷矿石颗粒的破坏单元数相对较多;破碎腔内磷矿石在一定的压缩变形范围内破碎单元消耗的能量相对较少。因此,为了获得较好的破碎效率和节能效果,在设计破碎机时应考虑颗粒的破碎行为。
In order to study the crushing of multi-granularity of phosphate rock under static load, a numerical model of multi-granularity phosphate rock destruction in the crushing cavity under static load was established by the rock burst process analysis system RFPA2D. The static load and crushing Effect of Cavity Constraints on the Breaking Effect and Energy Consumption of Phosphate Rock Multiparticle. The results of numerical simulation show that when the static load is used to break down the multiparticulate phosphate rock, the number of destroyed units of the phosphate rock in the middle of the crushing chamber is relatively large. The energy consumed by the crushing unit in the crushing chamber within certain compression deformation range Relatively small. Therefore, in order to obtain better crushing efficiency and energy saving effect, the crushing behavior of granules should be considered when designing the crusher.