Development of novel 100 kW microwave-assisted rock excavation system for large scale proof-of-concept

开发用于大规模概念验证的新型 100 kW 微波辅助岩石开挖系统

• 批准号: RTI-2019-00198
• 负责人: Sasmito, Agus
• 金额: $ 10.9万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=664325
• 关键词: Development; novel; 100; kW; microwave

The future of mining industry is believed to be continuous, automated, real-time monitoring and control, consistent product, efficient, conserve energy and reduce environmental footprint. Currently, most of mining process are in batch mode using drill and blast technique, albeit some soft-rock and coal mines started implementing continuous mining method using continuous miner, shearer and other rock cutting tools. In hard-rock mine, however, continuous mining method still faces many challenges and far from efficient due to low penetration rate of mechanical cutters, high wear of mechanical tools, unpractical size of equipment (if it is in underground mines) and high energy consumption of the tools. Started in 2008, our team has explored various possible method of continuous mining using explosive free rock breaking techniques. It was concluded that the most feasible technique to pre-condition (weaken) the rock using microwave irradiation coupled with mechanical rock cutting tool. This conclusion drew the attention of mining companies and resulted in securing an NSERC Collaborative Research and Development (CRD) grant in 2011 – 2016 (Phase II). Basic parameters affecting the irradiation of rocks samples and its influence on the reduction of rock strength has been demonstrated. This study investigated and proved the feasibility of using microwave-assisted rock breaking technology in excavation. Also, this previous NSERC CRD grant enabled the applicants to build a state-of-the-art 15 kW microwave-assisted rock breakage test rig, unique to McGill University in Canada and one of the few in the world. Currently, our rock-microwave research is entering Phase III. NSERC Collaborative Research and Development (CRD) grant supported by mining companies is underway. The objective of Phase III is large scale in-field tests for proof of concept of microwave assisted rock excavation tool. The equipment requested through NSERC RTI is a 100 kW rock-microwave system to upgrade our existing 15 kW rock-microwave system. Note that our existing 15 kW rock-microwave system was successfully used for lab-scale proof of concept; however, stronger microwave irradiation power of 100 kW is essential for large scale in-field tests, i.e. rocks are much larger and confined naturally in the mining bench or mining face as well as the stochastic nature of the heterogeneity of rock particles composition under real mining environment coupled with rock cutting tool equipment.

采矿业的未来被认为是连续的、自动化的、实时监控的、一致的产品、高效的、节约能源的和减少环境足迹的。目前，大多数采矿过程都是采用钻爆技术的间歇模式，尽管有些采矿过程是采用钻孔和爆破技术的。软岩和煤矿开始采用连续采煤机、采煤机和其他岩石切削工具的连续采矿方法，但在硬岩矿山，由于机械截齿的穿透率较低，连续采矿方法仍然面临许多挑战，而且效率很低。机械工具磨损严重，尺寸不切实际设备（如果是在地下矿山）和工具的高能耗从 2008 年开始，我们的团队探索了使用无爆炸岩石破碎技术进行连续采矿的各种可能方法。使用微波辐射结合机械岩石切割工具来调节（弱化）岩石这一结论引起了矿业公司的注意，并在 2011 年至 2016 年获得了 NSERC 合作研究与开发 (CRD) 资助。 （第二阶段）。影响岩石样品辐照的基本参数及其对岩石强度降低的影响已经得到证实。这项研究还研究并证明了在开挖中使用微波辅助岩石破碎技术的可行性。这笔赠款使申请人能够建造最先进的 15 kW 微波辅助岩石破碎试验台，这是加拿大麦吉尔大学独有的，也是世界上为数不多的试验台之一。目前，我们的岩石微波研究正进入第三阶段。 。由矿业公司支持的 NSERC 协作研究与开发 (CRD) 资助正在进行中，第三阶段的目标是对微波辅助岩石开挖工具的概念进行大规模现场测试，NSERC RTI 要求的设备是 100 kW 岩石。 -升级我们现有的 15 kW 岩石微波系统的微波系统 请注意，我们现有的 15 kW 岩石微波系统已成功用于实验室规模的概念验证；但是，微波辐射功率更强。 100 kW 的功率对于大规模现场测试至关重要，即岩石更大且自然限制在采矿台或采矿工作面中，以及在实际采矿环境下与岩石切削工具相结合的岩石颗粒成分的不均匀性的随机性质设备。