Tag Archives: energy efficiency

Mining energy benchmarking platform released for Canada’s miners

MiTRAQ and Natural Resources Canada have unveiled the Mining Energy Benchmarking Platform aimed at transitioning Canada’s mining industry to a low carbon future.

The platform enables analysis of power generation and consumption at mine sites and provides data-driven insight into energy use productivity, according to MiTRAQ.

Developed through the collaboration of MiTRAQ and Natural Resources Canada’s CanmetMINING subsidiary and the Office of Energy Efficiency, the platform provides mining companies with a multi-dimensional understanding of their relative performance within the industry to improve operations and increase their competitive advantage, according to MiTRAQ.

MiTRAQ ensure all data is secure, utilising the latest 2FA (2 Factor Authentication) tokenised data and military grade encryption. At the same time as this, only the mining company representatives can access their own raw data, making all outputs completely anonymous.

Miners with assets in Canada can start using this for free and, in the framework of cooperation, NRCan will subsidise licences so that mining companies can access the platform until June 2021.

Los Andes Copper commits to HPGR comminution route for Vizcachitas

Los Andes Copper says additional comminution test work has confirmed the selection of high pressure grinding rolls (HPGR) circuit technology for use in the processing circuit at its Vizcachitas copper project in Chile.

The use of HPGR, and the adoption of the previously announced dry-stack tailings, reinforces the company’s commitment to the environment and designing a sustainable operation with low energy and water consumption, it said.

At early stages of the Vizcachitas prefeasibility study (PFS), HPGR technology had been identified as the most attractive grinding alternative, given the data obtained from preliminary test work conducted in 2009, and in 2017-2018. As part of the PFS metallurgical test work, four representative samples from the mine plan were sent to a laboratory for pressure bed testing. The results of this test work confirmed the equipment sizing and its performance for a PFS-level study.

The results provided specific energy consumption readings of 2.17 kWh/t in the case of a HPGR circuit, which results in a global specific energy consumption of the comminution circuit of approximately 14 kWh/t. As compared with the semi-autogenous grinding alternative, the HPGR showed a reduction of up to 20% in energy and up to 50% in grinding media consumption, Los Andes Copper said. These results confirm the advantages of adopting this technology at the project.

The comminution circuit at Vizcachitas, where the HPGR circuit will be incorporated, is a three-stage crushing circuit using a gyratory primary crusher, three cone crushers in open circuit and two HPGR as a tertiary stage arranged in a closed circuit followed by ball mills. Through this process, and in addition to the lower energy consumption, the use of HPGR will reduce dust emissions related to dry crushing due to the removal of coarse recirculation in the secondary crushing stage, the company said.

Fernando Porcile, Executive Chairman of Los Andes, said: “I am pleased that the results from the test work carried out to date have confirmed the advantages of using HPGR in terms of enhancing project economics, lowering energy consumption and increasing operational flexibility.

“The use of HPGR technology favours the stability of the dry stacked tailings operation, as well as reducing the environmental impact by minimising energy usage, water consumption and dust emissions.”

Hudbay invests in comminution energy efficiency research with CEEC sponsorship

The Coalition for Energy Efficient Comminution (CEEC) has announced new sponsorship from base and precious metals mining company, Hudbay Minerals Inc.

Hudbay, a diversified mining company producing copper, zinc, gold and silver, owns three polymetallic mines, four ore concentrators and a zinc production facility in Canada and Peru (Constancia, pictured), as well as copper projects in the US. Its vision is to be a responsible, top-tier operator of long-life, low-cost mines in the Americas, CEEC says.

CEEC CEO, Alison Keogh, said that with growing global demand for minerals such as copper to support the shift towards low-carbon technologies, the need for lower footprint mineral processing was becoming even more critical.

“Rock crushing and grinding can typically account for more than half of a mine’s energy consumption,” she said. “By working together as an industry to understand and optimise comminution challenges, we have the opportunity to improve efficiency and environmental outcomes.

“We’re delighted that Hudbay has joined our list of visionary sponsors, each committed to collaborating with CEEC’s global network of miners, suppliers and researchers to advance efficient, cost-effective, lower footprint mining.”

Peter Amelunxen, Hudbay Vice President of Technical Services, said increasing performance and delivering sustainable value involves a combination of operational know-how and technical sophistication.

“We recognise that collaboration with CEEC is a positive step in our commitment to continuous improvement.”

Amelunxen said Hudbay was particularly interested in “adding a metric to our success” by contributing to the CEEC Energy Curves database. This free tool allows users to benchmark the energy efficiency of sites and visually assess potential energy and cost benefits through various operational scenarios.

“We’ve always approached what we do in terms of improving cost and energy efficiencies,” he said. “However, we’re most excited about using the Energy Curves to quantify, pound for pound, the energy reduction piece.

“This will help inform our decisions around targeted enhancements to existing sites and plan best practice operations in future mines. The bottom line is that this tool will enable us to demonstrate how we are improving environmental management while also improving returns for shareholders.”

David Clarry, Hudbay Vice President of Corporate Social Responsibility, said data sharing through the CEEC Energy Curves, and broader initiatives such as participation in the CDP (formerly Carbon Disclosure Project), were important for the industry.

“By being transparent and sharing knowledge, we can learn from each other and find novel approaches for achieving environmental benefits in a cost-effective way,” Clarry said. “Tapping into all the resources that CEEC offers gives us cutting-edge learnings so we can continue to pursue economically viable opportunities to improve energy efficiencies, reduce greenhouse gas emissions and better manage climate-related risks.”

Keogh said with the COVID-19 pandemic affecting many businesses around the world, Hudbay’s sponsorship during this time was commendable.

“As a lean, virtual not-for-profit, we thank all our sponsors for their continued support during this period of uncertainty,” she said. “This ongoing commitment will help CEEC and the industry to weather the storm and come out stronger and more sustainable on the other side.”