Ultrafine grinding using high speed stirred mills

加拿大采矿业面临着从矿物学日益复杂的矿床中回收金属的问题。为了开采这些矿石，矿物加工必须通过超细磨来释放有价值的矿物，然后使用浮选来浓缩它们。粉碎到细粒度需要大量的能量，专门的浮选分离技术往往使加工变得不实用或不经济。拟议的研究基于NSERC和行业支持的以前的研究，旨在推进超细磨技术。研究人员之前的研究集中在调查操作变量对能源使用的影响和影响下游加工的参数。基金会将支持两项相互关联的基础研究，最终将导致改进细磨技术的设计和操作并降低能源消耗。第一项研究的目的是提出功率输入之间的基本关系，能量强度和颗粒破碎。第二项研究将为一系列矿石矿物学的粉碎操作条件的选择制定标准。此外，研究将定义可用于支持其他研究的参数，以模拟高速搅拌磨机的粉碎。

The Canadian mining industry is faced with the recovery of metals from deposits with increasingly complex mineralogy.  To exploit these ores, mineral processing must liberate the valuable minerals using ultra-fine grinding followed by their concentration using flotation.  Comminution to fine particle sizes requires large amounts of energy and specialized flotation separation technologies often making processing unpractical or uneconomic.The proposed research is based on previous studies supported by NSERC and industry and is aimed at advancing ultra-fine grinding technologies.  Previous studies by the researcher have focused on investigating the effect of operating variables on energy usage and parameters that influence downstream processing.Funding will support two interrelated fundamental research studies that will ultimately result in improved design and operation of fine grinding technologies and lower energy usage.  The first study is aimed at advancing the fundamental relationship between power input, energy intensity and particle breakage.  The second study will develop criteria for the selection of comminution operating conditions for a range of ore mineralogies.  The research will define parameters that can be used to support other research to model comminution in high speed stirred mills.