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Use of High Pulsed Powers (HPP) in improving ore concentration processes

Strategic Area

Mining – Technology and Innovation
Energy Efficiency




Quebec Regions
Ministry of Economy and Innovation
Université de Sherbrooke


Clean Growth Program



CGP Contribution

$ 442,600

Project Total

$ 1,533,500



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Centre Technologique des Résidus Industriels (available in French only)

Lead Proponent

Centre Technologique des Résidus Industriels

Project Objectives

The objective of this project is to develop Canadian expertise in the use of a new fragmentation and grinding technology based on the use of high pulsed power (HPP), and to assess the effectiveness of this technology on mineral ores, refractory gold and ores containing low contents of strategic metals such as lithium.

The pilot-scale project will determine the efficiency and economic viability of this technology and provide the mining sector an alternative to conventional crushing and grinding circuits. Specifically, this project aims to study the potential of using HPP technology in improving the energy efficiency of the comminution stage (comminution is the reduction of solid materials from one average particle size to a smaller average particle size, by crushing, grinding, cutting, vibrating, or other processes), as well as improving the recovery rates of refractory gold and lithium.

Expected Results

This novel process could significantly reduce GHG emissions, and reduce energy use by up to 20 percent in subsequent grinding steps.

Technology, already proven for comminution of other materials, will be adapted for comminution of low grade minerals.  By allowing for treatment of larger feedstock and reduced energy costs, the technology will improve the economics of mining operations.

If successful, this will lead to the creation of a swiss-Canadian subsidiary dedicated to development of HPP.

Anticipated Environmental Benefits: Improved energy efficiency, reduced GHG emissions.

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