ABSTRACT Optimisation studies on integrating different procedures in mining and mineral processing have an increasing popularity in recent years, and most of them focus on the mine-mill or mine-flotation integration. However, few optimisation studies on integrating mining with gravity separation are found. The gravity separation plays a vital role in coal preparation, which also makes the related integration study necessary. In this work, an optimisation study on integrating mining with gravity separation is first carried out, which contributes to proposing the optimal cut point (the density at which 50% of the feed report to underflow) for gravity separation and the coal seam mass ratio for mining. Specifically, a simplified optimisation model includes separations in dense medium cyclones, dense medium shallow grooves, and spiral separators is developed. Then the Differential Evolution algorithm is employed to obtain the solution that has the maximum economic profit. Finally, the organic efficiency is utilised to evaluate this optimisation. The validation results indicate that the developed optimisation model and the adopted algorithm are applicable. Even though it is a simplified model, it is supposed to provide a preliminary optimisation scheme for integrating mining with gravity separation.

中文翻译：

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采矿与重选一体化的初步优化研究

摘要 近年来，在采矿和选矿中整合不同程序的优化研究越来越受欢迎，其中大部分集中在矿-磨或矿-浮选一体化。然而，很少有关于将采矿与重选相结合的优化研究。重选在选煤中起着至关重要的作用，这也使得相关的综合研究成为必要。在这项工作中，首先进行了采矿与重选相结合的优化研究，这有助于提出重选的最佳切割点（50％的进料报告底流时的密度）和煤层质量比。矿业。具体来说，一个简化的优化模型包括重介质旋风分离、重介质浅槽、开发出螺旋分离机。然后采用差分进化算法得到具有最大经济收益的解。最后，利用有机效率来评估这种优化。验证结果表明，所开发的优化模型和采用的算法是适用的。尽管它是一个简化的模型，但它应该为采矿与重选相结合提供初步的优化方案。