MICROWAVE ASSISTED MECHANICAL BREAKAGE OF ROCKS FOR MINING APPLICATIONS

CIM Edmonton 2008
Ferri Hassani, Peter Radziszewski,
Abstract Rock drilling and mechanized boring operations have gone through numerous evolutionary developments over the last century. However, these technologies could be dramatically improved by combining advanced technologies with traditional drilling techniques. The implementation of more effective drilling technologies integrating microwaves energy may yield substantial improvements in rock excavation as well as in mining processes. In essence, the electromagnetic energy from microwaves is used in weakening the rock ahead of the mechanical rock boring equipment. The hard rock is literally transformed into a soft rock increasing efficiency of the boring equipment and even lending itself amenable to techniques normally only applicable in soft rock conditions. Potentially, all the techniques developed for excavating soft rock such as road headers in mechanized mining or tunnelling machines could become applicable in hard rock conditions such as the basaltic rock used in the applicant’s experiments. This opens very interesting avenues for deep mining applications. In these instances, conventional methods using explosives and large openings are not amenable due to the very high stresses conditions. Mechanized rock breakage in hard rock is not efficient. But combining electromechanical and mechanical energies for such conditions could prove very beneficial.
This development could lead to significant cost savings to the Canadian mining industry, to more energy efficient processes and provide a benefit to an overburdened national energy inventory. The authors have designed a patented rock drilling prototype combining microwaves energy with a conventional drilling unit. But this development opens very promising development avenues in tunnel boring machines design as well as mechanized mining. In this paper preliminary results of rock drilling experiments conducted with the microwave drill will be presented and discussed. Potential extensions of this innovative technique toward tunnel boring, raise boring and mechanized mining applications will be commented.

Keywords: Rock breakage, Tunnel boring, Excavation, Deep Mining, Electromagnetic Energy, Mechanical Energy, Drilling, Rock mechanics, Mechanized mining, Microwaves
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Author(s): David M. Fisk
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Author(s): Jessica Barber
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Summary: This presentation reviews how a mining school can structure the means to interface efficiently with mining companies.
Proceedings: CIM Edmonton 2008
Keywords: Mining Education, student work experience, HR recruitment
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Proceedings: CIM Edmonton 2008
Author(s): Ian Bedard, Chantale Doucet, Daniel Fynn
Keywords: Scale effects, Empirical Relationships, Sample Geometry, Specimen Dimensions, Backfill, Scale Factors
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Proceedings: CIM Edmonton 2008
Author(s): Anetta Banas, Jennifer Burgess, Mike Baumgartner
Keywords: Nunavut, Kimberlite, Pyrope, Dykes, Churchill Diamond Project, Till sampling, Exploration, Diamonds
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Summary: To come
Proceedings: CIM Edmonton 2008
Year: 2008
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Summary: will present the report of the Alberta Chamber of Resources, "LEARNING FROM EXPERIENCE - Aboriginal Programs in the Resource
Industries".
Proceedings: CIM Edmonton 2008
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Summary: will speak about the Government of Canada's perspective and its role in supporting the involvement of First Nations in the economy.
Proceedings: CIM Edmonton 2008
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Proceedings: CIM Edmonton 2008
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Summary: I will be referencing several of our projects in IGCC and post combustion CCS, specifically the ZeroGen project. I will also discuss the status of several Key Carbon Sequestration projects that are demonstrating long term sustainability.
Proceedings: CIM Edmonton 2008
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Proceedings: CIM Edmonton 2008
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Proceedings: CIM Edmonton 2008
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rush not seen since the 1960's. Even though Saskatchewan has a huge
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Proceedings: CIM Edmonton 2008
Year: 2008
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Proceedings: CIM Edmonton 2008
Year: 2008
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Summary: A truck/shovel users group has been established wherein mining companies compare operating and maintenance performance towards addressing common issues and sharing best practices. The group provides a networking forum to learn about innovative approaches and improvement opportunities through dialogue and presentation, and site tours hosted by member companies through their respective mining sites.
Proceedings: CIM Edmonton 2008
Keywords: Truck, Shovel, Mining, Group
Year: 2008
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Summary: Inversion of magnetotelluric data in three dimensional environments has been mainly limited to two dimensional inversion of the TM mode impedance and/or bandwidth limited TE phase and tipper. While still requiring memory intensive workstations, full three dimensional inversion of magnetotelluric data is becoming more routine and extracts the maximum amount of information from the data in the most appropriate fashion. Both 2D and 3D inversions of a small transient magnetotelluric dataset will...
Proceedings: CIM Edmonton 2008
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Summary: This presentation will describe the energy management journey that De Beers Canada embarked on during the construction of a diamond mine in the Northwest Territories, including a discussion of the drivers for getting started early with energy conservation, challenges encountered during project development, and energy audit findings together with lessons learned for the next mine construction project. The presentation will also address how De Beers plans to build on initial successes for...
Proceedings: CIM Edmonton 2008
Keywords: Energy management, diamond mine construction, NWT
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Summary: There are a number of emerging opportunities to apply robotics in oil sands operations to address chronic issues in environments that can be hazardous to workers. This paper will describe technology options and potential benefits for several application areas, including bitumen production, maintenance, and reclamation. Issues of risk mitigation and operability and reliability will be discussed.
Proceedings: CIM Edmonton 2008
Year: 2008
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Proceedings: CIM Edmonton 2008
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Proceedings: CIM Edmonton 2008
Year: 2008
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Proceedings: CIM Edmonton 2008
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Proceedings: CIM Edmonton 2008
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Proceedings: CIM Edmonton 2008
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Proceedings: CIM Edmonton 2008
Year: 2008
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Proceedings: CIM Edmonton 2008
Author(s): Ben Thompson, Morteza Amoorezaei, Murray Grabinsky
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Proceedings: CIM Edmonton 2008
Keywords: Railcar Weighing, Productivity, Safety, Loadout Operations
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Summary: The Canadian mineral exploration, mining and related technology, service and supplier industries, working with academia, research organizations and governments, have created a new research and innovation network, the Canadian Mining Innovation Council (CMIC). CMIC is a consortium of industry, academic and government leaders whose purpose is to strengthen the competitiveness of a responsible Canadian mining industry by rebuilding mining research excellence across Canada.
The paper will...
Proceedings: CIM Edmonton 2008
Author(s): Stephen Lucas, Ferri Hassani, Gordon Peeling, Jon Baird
Keywords: Human Resources, Innovation, Mining industry, Research funding, Research and Development
Year: 2008
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Summary: The mining industry faces many challenges in the environmental and social-license areas, among others. In addressing these challenges, it is important that the industry communicate a positive and accurate message to the public - at the local community level and in a broader national or international context. The industry produces products that are essential to modern life. The industry employs thousands of people, buys from hundreds of suppliers, invests hundreds of millions in exploration...
Proceedings: CIM Edmonton 2008
Keywords: Benefits, economic, Employment, Environment, social, Investment, taxes
Year: 2008
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Summary: A simple method is presented for the synthesis of straight Y-shaped SiO2 nanorods with a diameter of about 200nm with smooth surface. These SiO2 nanorods were synthesized by thermal evaporation method at 1300?. The synthesized samples were characterized by means of scanning electron microscopy, transmission electron microscopy and Raman spectroscopy. The results suggested that the growth of such SiO2 nanorods may be a result of the fluctuation of external conditions causing a change in the...
Proceedings: CIM Edmonton 2008
Author(s): Guang Zhu
Keywords: synthesis conditions, Y-shaped SiO2 nanorods, thermal chemical evaporation method
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Proceedings: CIM Edmonton 2008
Keywords: industry, Teck Cominco, Partnership, student, UBC, participation, retainment, Recruitment
Year: 2008
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Summary: Human excellence in all areas of endeavour is acknowledged and recognized. Establishing role models and spreading the word on best practices helps broader audiences. For on-the-job safety, recognition programs are a component of successful programs. In Canada’s mining industry since 1941, the John T. Ryan Safety Trophies initiative has contributed to the sector’s improving record in this area. The much sought after and rich in history John T. Ryan trophies are recognized symbols of safety...
Proceedings: CIM Edmonton 2008
Keywords: excellence, recognition, Mining, John T. Ryan, Safety
Year: 2008
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Summary: Energy SavingsOver the years, Inco now Vale Inco, has earned a very good reputation in implementing energy efficiency programs to reduce cost and consumption. An ongoing effort on energy continues to reduce costs, generate saving and pay dividends. There are strong justifications in applying learned energy efficiency techniques from past knowledge and experience to new growth projects or installations that may result in even greater future energy cost and consumption reductions. Vale Inco...
Proceedings: CIM Edmonton 2008
Keywords: Energy savings, Vale Inco
Year: 2008
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Summary: The expanding use of computing and network technology systems in the mining industry on large mining equipment and for mine control systems has been beneficial for productivity improvements. The need to be able to quickly utilize and apply computing and networking technology in the mine has been inhibited by several issues. In 2005 a movement began within the mining industry to address and improve the situation. The movement started with an informal group of mining companies and evolved...
Proceedings: CIM Edmonton 2008
Keywords: Surface mining, One Voice, Technology Standards
Year: 2008
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Summary: Discovered in 1978, Areva Resources Canada Inc’s. rich Midwest uranium orebody precluded exploitation for 30 years due to the project’s economic, technical, social and environmental challenges. After completing mine development studies for three different mining methods under the direction of four different operating companies and the submission of no less than five Environmental Impact Statements, Areva plans to bring the Midwest project into production as an open pit development in 2010. ...
Proceedings: CIM Edmonton 2008
Keywords: Midwest, Mining, Uranium, Project development
Year: 2008
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Summary: Mining organizations throughout the world have raised awareness and action around
energy management initiatives. This has been achieved through various techniques from
extensive application of automation technologies to discussion forums with employees.
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This paper will present methods used within mining operations to leverage existing
technologies for decision support and knowledge transfer relating...
Proceedings: CIM Edmonton 2008
Keywords: Mining, Sustainability, Energy savings, Existing technologies
Year: 2008
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Summary: The large tire users group has been in operation for some time, and is currently focused on sharing best operating/maintenance practices, monitoring techniques and repair options to maximize equipment tire life across the mining industry. Members return with valued information that gets the most from equipment tires to support continued mine operations.

Presentation will focus on brief history of the LTUG, past successes (including minesite testimonials) and an overview of the current focus...
Proceedings: CIM Edmonton 2008
Year: 2008
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Summary: A number of mining technologies have been widely introduced over the last few decades or are under development. These include heap leaching of low grade copper and gold ores, remote mining, driverless (autonomous) trucks, etc. Adoption of these technologies is typically based on technical and economic feasibilities and not a broader sustainability evaluation. This presentation will demonstrate how a broader sustainability assessment may impact implementation decisions and deployment of the...
Proceedings: CIM Edmonton 2008
Year: 2008
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Summary: In order to spur innovation, sometimes a grand vision is required to motivate and align the forces and resources. "Mining on the Moon" presents mind boggling opportunities for technological innovation - from autonomous vehicles to intelligent control systems to advanced communications - and the promise to apply those innovations to create real value for Canadian mining companies. But does Canada have the courage to lead the challenge? The potential of intelligent systems will be used to as a...
Proceedings: CIM Edmonton 2008
Year: 2008
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Summary: The control system at Highland Valley Copper is being upgraded to extend the lifecycle of system to the foreseeable future of the mine. 2 of the 5 lines have been converted to the Schneider Control System so far, with the remaining three areas schedule for conversion in the next year. The conversion of the two areas was accomplished during normally scheduled maintenance periods resulting in the mine maintaining full planned production due to the essentially transparent nature of the...
Proceedings: CIM Edmonton 2008
Author(s): Mike Elsinga, Jamie Hargreaves
Keywords: system, Technology, Control, Copper, upgrade
Year: 2008
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Summary: In July 2007 the International Finance Corporation of the World Bank Group released for public comment it’s updated Draft of Environmental Health and Safety (EHS) Guidelines for Mining . The new Mining EHS Guidelines are the result of a two and a half year review process to update guidelines for all sectors of IFC activity. These mining guidelines serve to condense the previous open pit, underground and Draft Precious Minerals Mining guidelines into a single document. They cover Industry-S...
Proceedings: CIM Edmonton 2008
Author(s): Mike Rankin, Brian Griffin
Keywords: Exploration, Construction, closure, World Bank, global guidelines, Development, Operation, Health & Safety, Environmental, post-closure
Year: 2008
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Summary: Swing and Hoist gearboxes are one of the most critical mechanical systems on a dragline. Pall Corporation over the past 5 years have developed filtration skids specifically for dragline swing and hoist gearboxes. First designed in Australia, the skids are designed to be instaled perminantly to the gearbox lube systems to continually recirculate the high viscosity oil to maintain very low ISO Cleanliness Levels. The results have proven to extend gearbox reliability and maintenance schdules and...
Proceedings: CIM Edmonton 2008
Author(s): Bradley Mark Crook
Year: 2008
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Summary: This paper presents an evaluation of underground-to-surface haulage options for a relatively large deposit. Specifically, it presents a recommended haulage option to provide the greatest value to the Project. Options considered included conventional truck, trolley-truck, conveying and shaft hoisting. The work was done to the level of a scoping study as input to an internal pre-feasibility study.

The base case for the option analysis in the study was a Long Hole Open Stoping option (LHOS)...
Proceedings: CIM Edmonton 2008
Keywords: Truck, conveyor, Haulage, Shaft, Mining, Underground
Year: 2008
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Summary: The paper is a summary of ongoing research at the Norman B. Keevil Institute of Mining and Goldcorp’s Red Lake Mine on paste sill stability. This paper focuses on the performance on an instrument fill fence that was tested above the design load of the fence to understand the stress-strain response of the fence. The fill fence was a standard fill fence that is comprised of 10cm of shotcrete applied to a rebar skeleton spaced nominally 60cm apart. The fence was instrumented with rebar and...
Proceedings: CIM Edmonton 2008
Author(s): Paul Hughes, Cristian Caceres, Ray Wilkins, Rimas Pakalnis
Keywords: Paste, Pull Testing, Fill Fence, Red Lake
Year: 2008