The current mining climate has seen a steady increase in research and development of less energy-intensive ore mining and processing pathways, particularly for low-grade abrasive ores. Invariably, mine operators are continually seeking innovative capital and operating cost reduction options for energy- and capital-intensive unit operations such as comminution to stay competitive. In this study, the performance of a novel laboratory-scale superfine crusher and a ball mill, in terms of comminution energy requirement and mineral liberation characteristics, is investigated for magnetite ore beneficiation. The impact of particle size reduction using the superfine crusher and ball mill on specific energy input, particle size distribution, mineral liberation, and the response of their respective discharge products to magnetic separation was also probed. The study demonstrated the ability of the novel superfine crushing technology to produce ultrafine particle sizes historically executed by milling and grinding technologies, with a corresponding improved mineral liberation and frugal energy use.

中文翻译：

---

推动超细破碎的前沿及其对粉碎能和矿物释放的影响

在当前的采矿环境中，能源密集度较低的矿石开采和加工途径的研发稳步增加，特别是对于低品位的磨蚀性矿石。矿山运营商总是在不断为能源和资本密集型单元运营（如碎磨）寻求创新的资本和运营成本降低方案，以保持竞争力。在本研究中，研究了新型实验室规模的超细破碎机和球磨机在磁铁矿选矿方面的碎能量需求和矿物释放特性方面的性能。此外，还研究了使用超细破碎机和球磨机减小粒度对比能量输入、粒度分布、矿物释放以及它们各自排放产物对磁选的响应的影响。该研究证明了新型超细粉碎技术能够生产历史上通过研磨和研磨技术实现的超细粒度的颗粒，并相应地改善了矿物释放和节俭的能源使用。