Structure of sediments formed in tailings treatment

This project will combine filtration characterization and advanced 3D imaging and modelling of material structures to find ways to improve the recovery of process water from difficult-to-treat tailings that are the by-product of mining and mineral processing. This process is called solid-liquid separation and it is a critical area for the reduction of oil sands tailings volumes. Due to the chemistry and solids composition of oil sands tailings, they are extremely resistant to dewatering.

Geochemical analysis of low-sulphidation epithermal deposits on the La Victoria property in the Ancash Department of the Republic of Peru

This research project will focus on analytical techniques related to determining the gold geochemistry of the La Victoria property in the western Peruvian Andes. The La Victoria property is found along a major gold belt that is host to some world class deposits such as Yanacocha, Lagunas Norte, La Arena and Shahuindo. Based on initial exploration techniques, two major mineralized areas (San Markito and Rufina) have been identified as important for gold exploration.

Development of Artificial Intelligence Algorithms For Improved Correlation of Sensor Responses to Ore Grade

The benefit of ore sorting is rejecting waste material prior to downstream processing. This results in reducing material handling costs and environmental liability, lowering energy consumption, and feeding more consistent and higher ore grades to the concentrator. Sorting allows for a lower cost bulk mining method resulting in lowering the cut-off grade and increasing the resource size. Despite the potential benefits, sorting is not widely applied due to barriers in the current technology.

Study on the hydro-geotechnical properties and establishment of a numerical model for waste rocks

Mines produce large amount of waste rocks, mostly disposed on ground surface in form of pile. In underground mines, waste rocks are increasingly used to construct barricades to retain mining backfill in the stopes. Waste rocks can also be used as inclusions to accelerate the drainage and consolidation of tailings. To properly evaluate the stability of these infrastructures, numerical models are needed. However, the existing numerical models suffer from two major limitations.

Development of Advanced Comminution and Gravity Concentration Technologies for Low Water and Energy Consumption

Mineral extraction and processing by mining operations is land, energy and water intensive. Mineral processing is both the single largest end-use of electricity, as well as the most water-intensive stage in the mining value chain. This research will help to tackle the issues of power and water consumption and lead to the development of reductions in land, energy and water intensity at mining operations.

Green technology use in gold recovery: Deer Cove

The Deer Cove gold mine is located approximately 4.2 km north of Ming's Bight near Baie Verte, north-central Newfoundland. Free gold has also known to occur in the surrounding till.

Preliminary Investigation of Innovative Processes to Recover Nickel from the Decar Deposit

The Decar nickel deposit is located in British Columbia. With more than 2 billion tons of reserves grading 0.2% Ni the deposit represents a significant resources. 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 readily 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.

Assessing bioremediation potential for 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. AREVA has a proposed mine site expected to produce up to 6 million tonnes of waste rock containing As. This waste rock needs to be stored appropriately and the release of it’s As into groundwater must be limited to minimize environmental impacts.

Mechanisms and Application of MFD Catalyst on the Leaching of Secondary Copper Sulfide - Year two

Cu and Ni minerals that have great economic value mostly exist in the form of sulfides, making them difficult to extract using hydrometallurgical processes. Currently, heap leaching is the most economical way to extract these metals from low grade ores. Copper recoveries of many chalcocite heap leaches report around 70% copper recovery. However, the chalcocite leaching reaction has several stages. The first stage leach is characterized by 50% copper extraction and the conversion of chalcocite into a second stage of covellite (CuS) which is very difficult to leach at ambient temperature.

Development of forest legacy-based mine reclamation techniques for recolonizing the soil food web and promoting vegetation establishment

The August 2014 tailings dam breach at the Mount Polley Mine, BC severely disturbed downstream forest ecosystems through erosion and tailings deposition. The impacted area presents an opportunity to research using ecosystem legacies (components that survive a disturbance) to rehabilitate disturbed sites.