Triboelectric Separator for Beneficiation of Fine Minerals

CIM MEMO 2011
James D. Bittner, Frank J. Hrach,
Abstract Separation Technologies, LLC (ST) has developed a dry processing system based on triboelectric charging and electrostatic separation for mineral processing. Since 1995, ST has utilized this technology to produce over 8 million tons of low carbon content coal fly ash for use as a cement substitute in the production of concrete. Fly ash with carbon levels up to 30% have been used to produce a concrete grade ash with a controlled carbon level of 2 ± 0.5%, a high value material for the construction industry. Eighteen ST carbon separators are in place with over 100 machine-years of operation at locations in the US and Europe. A carbon rich product is simultaneously produced, which can be introduced to the utility boiler to recover the fuel value of the carbon. ST’s success in the fly ash industry has enabled further development of the technology, including improvements in operation, maintenance and production rates. The technology has been successfully applied to the beneficiation of a variety of minerals including calcium carbonates, talc, and potash.
Keywords: triboelectric, Beneficiation, Separation
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Summary: Mines must manage variability from within their operations as well as those imposed upon them by external forces. This paper provides a framework to manage both internal and external variability through the review and adjustment of the mine plan where applicable to minimize lost production and maintain operational safety.
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Summary: "Downtime systems" are ubiquitous, but these systems have today evolved into sophisticated delay accounting systems. Iron ore and coal miners in particular are utilizing delay accounting systems not as "equipment failure" systems, but rather as an indicator of the health of their overall processes.

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Summary: In North America the demographics of the workforce population is beginning to have a major impact on all organizations. This presentation provides a review of demographic statistics that impact the Canadian mining industry. Trends in the workforce are discussed, including delayed retirement and the shortage of qualified mid-career individuals. These are identified as critical human resources who have key skills required to complete industry projects. Methods of planning that account for...
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Summary: Potential problems associated with groundwater inflows are a major concern to many Northern Saskatchewan mining operations. Rock mass behaviour and stability have been linked to groundwater inflow potential. An estimate of the hydraulic conductivity of the rock mass is an important factor for assessing groundwater inflow potential.

This paper presents the procedure taken and the results obtained from air permeability tests which have been done to estimate the hydraulic conductivity of...
Proceedings: CIM MEMO 2011
Author(s): Stephen Klemmer, Doug Milne, Rashid Bashir, Jarret Thomson
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Summary: The chicken and egg scenario where adverse truck motions cause ground deterioration and poor ground profiles that in turn cause adverse truck motions is a downward deterioration spiral that dominates in our industry. If we can remove one action, the reaction must stop and vice-versa. A simple 'truck to excavator' load data analysis and wireless communication system is outlined in this paper; that will provide visual assistance to the excavator operator in achieving improved load placement...
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Summary: The Roy Lloyd Mine in northern Saskatchewan is a high-grade underground gold mine which is currently supplying ore to Golden Band Resources’ Jolu mill. Prior to the operation of the mine an underground exploration program was conducted intermittently at the site. During both the underground exploration phase and mining, Golden Band Resources (Golden Band) has been investigated ways to reduce freshwater usage within the mine by recycling mine water.
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Author(s): Paul Michael Kip, Richard Cober Snider
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Summary: Underground Sumps made Clean

Bryan D. Wilson
Construction Coordinator
Xstrata Nickel – Sudbury
Nickel Rim South

Abstract

Sumps have been a long standing issue in the underground environment,
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The initial task was to avoid to exposing equipment to these conditions and to reduce the amount of solids being sent to the main dewatering pumps to help protect and...
Proceedings: CIM MEMO 2011
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Summary: We will present the summary of a number of case
studies in which mining organizations have
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Keywords: Maintenance, Spare Parts, Inventory
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Summary: Francois Charette, Dynamic Rock Support NA
Michael Hill, Dynamic Rock Support NA

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High stresses conditions in underground mines push the performance envelope of support system to their limit. In weak rock masses those conditions lead to large deformation and breakdown of the rock material, while stress release events in hard rock mines can lead to sudden and usually violent rock and support failure. In most typical support systems, different reinforcement and support mechanisms...
Proceedings: CIM MEMO 2011
Author(s): Michael Hill
Keywords: Mining, high stress, Stability, Support, Rockbolt
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Proceedings: CIM MEMO 2011
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Summary: Cameco's McArthur River Mine, the highest grade uranium mine in the world, is located 600 km north of Saskatoon, Saskatchewan. Due to the high grade of the ore and proximity to water bearing structures, McArthur employs development and mining methodologies that are unique to the Canadian mining industry. A description of the mining plan for the Zone 4 North orebody, scheduled to begin production in 2013, will describe the mythologies and controls planned for the area. Prior to productio...
Proceedings: CIM MEMO 2011
Author(s): Kerry McNamara, Greg Murdock
Keywords: McArthur, Uranium, freeze, wall, Controls, Development, River, Raisebore, Mining, Ventilation
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Summary: An Investigation in the Stand up Time of Stopes for Birchtree Mines in Thompson, Manitoba

Matthew Violot, Doug Milne, Denis Thibodeau, Cecile Kelly

Abstract

Vale Canada’s Birchtree Mine, located in Thompson, Manitoba, has been experiencing problems with dilution within their open stopes. They employ a VBM (vertical block mining) method, which on average uses three lifts to extract the block. The hanging wall, footwall, and stope block backs are all areas of concern for potential...
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Summary: Separation Technologies, LLC (ST) has developed a dry processing system based on triboelectric charging and electrostatic separation for mineral processing. Since 1995, ST has utilized this technology to produce over 8 million tons of low carbon content coal fly ash for use as a cement substitute in the production of concrete. Fly ash with carbon levels up to 30% have been used to produce a concrete grade ash with a controlled carbon level of 2 ± 0.5%, a high value material for the...
Proceedings: CIM MEMO 2011
Author(s): James D. Bittner, Frank J. Hrach
Keywords: triboelectric, Beneficiation, Separation
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Summary: Cost evaluation models constructed specifically to evaluate the economic potential of an individually motorized railcar system of ore and waste transport demonstrate that the approach may be considerably more cost effective than traditional rubber-tired haulage methods. The system design places a motorized drive unit on each railcar, as opposed to the more common configuration where a series of un-motorized cars trail behind a single locomotive. These motorized railcars are directed to...
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Summary: Over the past decade, there has been a widespread adoption of risk based asset integrity programs by the mining industry to address issues with mechanical equipment and structures, moving from reactive maintenance to predictive planning. In most mining operations, corrosion plays a primary role in the loss of integrity, and is most effectively combated by protective coatings. It is generally recognized that upkeep of protective coatings is a much less costly approach to maintaining asset...
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Summary: Tooth-wear on mining shovels requires continuous monitoring. Worn teeth impede excavation performance, increase energy usage, and increase the risk of lost or broken teeth and adapters. A machine-vision-based automated tooth-wear monitoring system is presented. The system employs a rugged boom or stick-mounted camera to capture images of the shovel teeth. An onboard computer processes the images in real-time to determine the length of each tooth. The current wear state is available via a...
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Summary: Modern surface mines are among the world's largest single consumers of diesel fuel. A typical mine site can consume in excess of 200 million liters of diesel fuel per year. Delivered diesel fuel is not necessarily clean. Depending on the mode of transportation, handling practices and local climate, incoming bulk fuel can contain up to 20 mg/L suspended solid contaminants and also significant quantities of free water.
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Summary: Improving the value created by a brownfield portfolio requires more than optimizing the slate of projects according to best overall business value. Attention should be paid to improving the flow of work, to maximizing productivity of resources assigned to develop and deliver projects, and to addressing systemic weaknesses, conflicts and constraints that threaten every project.

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Summary: Plastic cable carriers guide and protect moving
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Summary: Belt conveyor design involves the evaluation of belt tensions, drive selection, pulley configuration and other technical issues. The conveyor belt tensions vary with conveyor layout, drive pulley configuration, belt selection, and idler selection. The decisions for the belt conveyor construction always take all technical, commercial and maintenance issues into consideration. A good conveyor design shall provide required operational features and at the same time be cost effective. The common...
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Proceedings: CIM MEMO 2011
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Proceedings: CIM MEMO 2011
Author(s): Dino Philopoulos, Bruce Peberdy
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Summary: Brunswick Mine, an underground lead and zinc mine located near Bathurst, New Brunswick, has been in operation since 1964. Due to improved metal prices and advancements in mining technologies, our average stope size was decreasing and our percent of total drilling of up holes was increasing. As drill patterns for up holes produce fewer tonnes per meter drilled; an increase in productivity and availability of the drills was required. Smaller stopes means more stopes need to be mined per year...
Proceedings: CIM MEMO 2011
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Summary: Abstract

The process of relationship management that is required for operating an industry in Aboriginal territories is part of legal framework in the crowns duty to consult and accommodate. In meeting this requirement Cameco has turned community relationships into a business case to promote recruitment, business and growth.

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Proceedings: CIM MEMO 2011
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Summary: Failure to meet quality objectives during the execution of any industrial project has lasting negative impacts on facility life cycle performance. Cost overruns, schedule delays, and rework are characteristics of project quality issues that arise during the project. Commissioning and start-up problems, low production, production bottlenecks, breakdowns and the necessity for operational work-arounds are characteristics of project quality issues that appear after project completion. Risks...
Proceedings: CIM MEMO 2011
Author(s): Richard J. Craig, George W. Lochhead, Lucien Nel
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Summary: Economic viability of base metal mining is complicated by a volatile market that can cause fluctuations in the growth and stability of the mining industry. Nickel is mined primarily for use in manufacturing industrial stainless steel and plating materials. It is essential that nickel production be sufficient to respond to current and future market demand. A Post-Pillar cut and fill mining complex is currently producing nickel sulfide in Northern Manitoba. From 2006 this area has shown a...
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Proceedings: CIM MEMO 2011
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Summary: A collaborative research project involving industry, government and small and medium enterprises to assess the benefits that ventilation on demand (VOD) can provide to new and existing mines, and to assess the viability of moving to a quality based control criteria has recently been completed.

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Summary: Today, manufacturing all over the world is being impacted by highly fluctuating supply – demand, extreme price volatility and tremendous market uncertainty. In particular, the mining and metal processing industry has to make informed investment decisions in this uncertain economic environment.

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