Identifying species and planting conditions to revegetate mixed mine tailings at the Whabouchi site operated by Nemaska Lithium in Northern Québec

The long term objective of this project is to develop methods of revegetating mine tailings sites (in this case, a very large tailing mound in northern Quebec) using natural vegetation, and without transporting soil long distances. The specific objective of this project over the next year is to (i) conduct field trials to determine the causes of mortality of transplanted tree saplings using our method and (ii) to identify easily-measured traits of naturally growing plant species that increase the likelihood of such species surviving in these harsh environment.

Fluoride Removal from Brine Solutions

NORAM Engineering and Constructors have a technology called salt splitting. This technology is used to produce caustic soda and sulfuric acid. However, the presence of fluoride in this technology can cause the breakdown of the coating on the titanium anode, which can cause premature anode failure. As replacing these titanium anodes can incur significant costs, purification in this technology to reduce its fluoride concentration is imperative.

Using a digital camera to monitor dust emissions at mine sites

Minerals industry has a considerable responsibility to implement effective dust management plans, thereby controlling the mine dust emissions. In dust management plans, the monitoring of dust emissions is an indispensable part in both mine sites and process plants. However, mine sites cover a wide range of locations where conventional monitoring instruments cannot be all installed. These locations are still under interests, but there is a lack of technology to monitor their dust emissions to the environment.

Material Point Method Modeling of Soil Liquefaction in Cyclic Loading

Large deformation problems represent a new issue in the current Canadian engineering practice since the current numerical methods cannot adequately address these problems. Material point method (MPM) is a modern numerical technique with many potentials for applications in large deformation problems in geotechnical engineering. The main benefit of addressing large deformation problems is the estimation of risk since as an example this methodology provides the opportunity to know the run-out distance in dam failures.

Neutral and alkaline bio-heap oxidation of refractory gold ores with adaptive moderate-thermophilic and mesophilic microorganisms

The project has been defined to address the growing concerns of the mining industry towards sustainable copper production with low cost and environmentally friendly process option. The current processes for copper extraction are either expensive or have detrimental impact on the environment. This proposed project pertains to the development of a technology that applied green energy (electricity) as well as ultrasonic technology to recover copper from the main copper minerals (chalcopyrite and enargite) with minimum cost and highest efficiency.

Stabilization of Mine Tailings with Inorganic Polymer Binder

The project aims to refine a process developed by Terra CO2 Technologies to use a small proportion of geopolymer cement made from mine tailings to solidify and stabilize a bulk volume of tailings against leaching and water contamination.

Conceptual study of the techno-economic effects of straight drilling on mining operations

Conventional mining activities are composed of four distinct operation coming together. These operations are called; drilling, blasting, loading and hauling. As being the first step in this chain of operations, drilling quality and preciseness is very vital for the success and effectiveness of remaining components. Accurate drilling not only saves time to the company but also saves from costs and resources. In this sense, mining machinery manufacturing leaders have been working on the best technology available to better drilling accuracy with sophisticated tools and expertise.

Assessing bioremediation coupled with adsorption for treatment of arsenic released from mine waste rock

Arsenic (As) is a toxic metalloid that is widespread in the environment. Anthropogenic mining activities result in As being released from rock via mining activities in mine tailings, waste rock and process waters. ORANO has a proposed mine site expected to produce waste rock containing As and other metals/metalloids. This waste rock needs to be stored appropriately and the release of it’s As into groundwater must be limited to minimize environmental impacts.

An Investigation into Determining the Source of Elevated Metals in Seepage at Mount Polley Mine

After identifying elevated metal concentrations in two seepages from a waste rock pile at Mount Polley Mine, an investigation was launched to determine the potential source as well as the implications for potential treatment. Evidence points to a previously unidentified source of acid mobilizing metals from the waste rock pile and being neutralized along the way, before daylighting at the base of the pile. The most likely source that was identified was a sulphur pile, which was stockpiled on site as a source of acid for leach pad research.

Recovery of nickel from awaruite: froth flotation and atmospheric acid leaching behavior of the natural nickel-iron alloy

The Decar Nickel District is located in British Columbia. With more than 2 million tonnes of Ni, the district represents a significant resource. The nickel occurs in an uncommon mineral awaruite which is an alloy of nickel and iron. Due to its strong ferro-magnetic properties and high density (SG 8.0) it should be easily recoverable using magnetic separation followed by gravity concentration. However, the presence of significant amounts of magnetite which as similar physical properties makes it difficult to separate the awaruite from the magnetite.