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New Report Identifies Major Carbon Reduction Opportunities in Global Mining
by Philippine Resources - May 11, 2021
- New analysis lays out the scale of the mining industry’s energy use and identifies ways it can be reduced using currently available technologies
- Materials such as copper, lithium and nickel play an essential role in the technologies like electric vehicles and renewables that will help the world meet its decarbonisation targets
- As demand for these metals increases, the mining industry must itself become more efficient and environmentally sustainable
The global mining industry must move away from legacy systems and processes if it is to meet the challenge of decarbonisation, according to a new report released today which calculates mining’s share of global energy consumption and identifies ways the industry can aid the transition to net zero emissions needed to limit temperatures in line with the Paris Agreement.
The report, commissioned by the Weir Group plc, analyses mine energy data from over 40 published studies to give a comprehensive understanding of where energy is consumed in mining and minerals processing. It shows that the total amount of power used by the mining industry – which plays an essential role providing the metals used at the heart of the modern economy – is equal to c.3.5% of global energy use.
The metals produced by mining are critical for enabling the global transition to low-carbon infrastructure. But without action, energy use in mining itself is set to trend higher in the coming years as demand increases for metals like copper, nickel and zinc. The report suggests there are technologies available today that could make a significant difference to this trend. For example, it highlights that comminution – i.e. crushing and grinding processes – is the single biggest user of energy at mine sites, typically accounting for 25% of mining’s final energy consumption. This is equivalent to the power used by 221 million typical UK homes, or c.1% of total consumption globally. Comminution is therefore a natural target for the most impactful energy savings opportunities.
Small improvements in comminution technologies can lead to relatively large savings in both energy consumption and greenhouse gas emissions. For example, a 5% incremental improvement in energy efficiency across comminution could result in greenhouse gas emissions reductions of more than 30m tonnes of CO2-e. The replacement of traditional comminution equipment with new grinding technology also reduces indirect emissions in the mining value chain, for example by removing the need for the manufacture of emission-intensive steel grinding balls.
Of the remaining energy consumption by the mining industry, diesel in varied forms of mobile equipment accounts for 46%, electricity in mining (ventilation) 15% and “other electricity” 14%.
Other significant opportunities identified by the report for reducing mining’s energy consumption include optimisation, big data and artificial intelligence. In addition, if zero emissions energy sources are deployed for mining equipment – e.g., renewable energy, energy storage and alternative fuels – then the industry may well be able to achieve zero emissions, leaving a relatively small role for offsets and carbon credits to play.
The report comes as the mining industry is under ever-greater pressure to produce essential minerals that
support some of the biggest global structural trends, from population growth to urbanisation and decarbonisation. Copper, nickel, steel and lithium are core components of electricity transmission and storage, electric vehicles and renewable energy infrastructure. The move to a decarbonised economy will result in increased primary consumption of these mined commodities, even after factoring for recycling, so it is important that mining itself becomes more sustainable.
Download the independent Mining Energy Consumption 2021 report here: www.energysavingsinmining.com
Commenting, Weir Group Chief Executive Jon Stanton said:
“The mining industry is central to economic development globally, with critical minerals enabling the low-carbon transition required in the rest of the economy. But the environment in which it will operate in future will be very different from the past, requiring comprehensive change and investment. In short: mining needs to become more sustainable and efficient if it is to provide essential resources the world needs for decarbonisation while reducing its own environmental impact.This report is an important contribution to that debate which we hope will spark thoughtful conversations around the world on the way forward.”
Alison Keogh, Chief Executive of the Coalition for Energy Efficient Comminution, said:
“This report highlights both a challenge and an opportunity to revitalize cross-industry discussion and actions on decarbonisation and ESG solutions. We invite industry leaders to actively contribute and collaborate through mining-vendor-research partnerships and share knowledge. Together, we can accelerate improved energy, emissions and water footprint across industry faster.”
Ricardo Garib, Weir Minerals Divisional President commented:
“Weir Minerals is focused on making mining more efficient and sustainable by leading technology change in the industry. Our Enduron HPGRs are increasingly replacing conventional milling systems in comminution (crushing, screening and grinding) circuits because of their substantially lower energy consumption, finer rock reduction requiring less water downstream and potential for significant total cost of ownership reductions.”
Stuart Hayton, Managing Director of Weir Minerals Netherlands, where the Enduron® HPGRs are designed and manufactured, added: “Not only do Enduron HPGRs require as much as 40% less energy than traditional alternatives, their wearable components last much longer and the maintenance time required to replace worn out parts is significantly lower. The estimated carbon saving of each Enduron HPGR in operation is equivalent to taking more than 3,600 petrol fuelled cars off the roads each year.”
- The report quantifies energy use in five commodities: copper, gold, iron ore, nickel and lithium. Bringing together mine energy use data from more than 40 published studies (each of which references dozens more studies) from 2007 to 2020 into a single narrative, the report aims to build a more comprehensive understanding of energy use in the mining industry.
- Using the current production rates of the commodities in question, and the energy intensities for each of the commodities, a total of 1,68 EJ/a (1,680,000,000,000,000,000 joules per year) has been calculated. This is approximately 0.5% of total final energy consumption globally. Published information indicates that the entire mining industry consumes approximately 12 EJ per year – or 3.5% of total final energy consumption globally.
- Assuming that present trends continue, there will be 250m electric vehicles on the road by 2030. To meet this demand, production of cobalt, lithium, graphite and nickel will need to be scaled up significantly.
- Current projections show that the current rate of decarbonisation globally is far below what is required to meet the goals of the Paris Agreement. A sustained decarbonisation rate of up to 7% per year, year on year should be sufficient to achieve the goal of a temperature increase of well below 2°C by 2100. For the mining industry, there are multiple ways to achieve decarbonisation including energy efficiency and fuel/energy switching. Many of these opportunities are starting to be explored by both the mining companies and the mining services providers, who see decarbonisation and energy reduction as a key way to reduce exposure to the risks of climate change.
Philippine Resources - May 24, 2021
Weir Minerals announces major order of Enduron® HPGR with IAMGOLD
Weir Minerals is proud to announce another major order of Enduron® HPGR in Gold application with our valued Customer IAMGOLD. An Enduron® HPGR with rolls measuring 2.4 m x 2.4 m (length : diameter) will be installed at IAMGOLD's Côté Gold Project. This will be the largest HPGR in Canada and the largest in the world in a gold hard rock application. Weir Minerals’ Enduron® HPGR unique design is perfectly suited to IAMGOLD’s Côté Gold operations to achieve industry-leading particle size reduction and with the lowest total operating costs. Enduron® HPGR is the market proven HPGR with the mechanical design to support efficient and durable skewing thanks to its unique bearing arrangement and control philosophy Enduron® HPGR has a unique roll diameter-width ratio which maximizes throughput at the desired product grind Enduron® HPGR self-adjusting cheek plates provide equal sealing distance as flanges at minimum costs Enduron® HPGR is the market leader in large format, high tonnage hard rock HPGR Tim Lundquist, HPGR Regional Sales Manager North America: “Our Enduron® HPGR design will create energy savings of up to 40% compared to an equivalent SABC comminution circuit, while also significantly reducing the need for downstream grinding media. This power and grinding media savings will optimize total ownership cost and also account for a significant reduction in carbon emissions”. Weir Minerals prides itself in being close to its customers at all times. Our Weir Minerals Canada team and purpose-built facilities will be providing full HPGR service for the Côté Gold operations. For more information about Enduron® HPGR please visit enduronhpgr.weir
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Abe Almirol - June 23, 2021
Cagayan River Rehabilitation: Initiatives from Ridge to Reef
After two severe weather disturbances that took place in the first half of November 2020 heavily hit eight regions in the Philippines, Pres. Rodrigo Duterte immediately signed Executive Order No. 120 creating the Task Force Build Back Better (TF-BBB) to initiate a comprehensive and integrated recovery. Cagayan and Marikina valleys suffered the heaviest damage and human casualties as floods and its aftermath landslides placed many parts of the country in a state of calamity for weeks. Typhoon Rolly (international name: Goni) made its landfall on 1 November 2020 and several days after its onslaught and in almost the same path, Typhoon Ulysses (international name: Vamco) carried with it heavy rains as it reached the Philippine shorelines on 11 November 2020. Tuguegarao and Marikina cities were in deep floods as Ulysses traversed the Philippine area of responsibility. The National Disaster Risk Reduction Management Council reported over 2.3 million people affected across eight regions in the country. Reports indicated that 23,089 individuals displaced were moved to evacuation centres while 46,987 individuals displaced stayed outside evacuation centres. The death toll from Ulysses has reached more than 70. It has severely damaged property and infrastructure in some areas. Videos circulating in social media showed floods reaching the roofs in some parts of Cagayan and Marikina City. Two agencies, the Department of Environment and Natural Resources (DENR) and the Department of Public Works and Highways (DPWH), were given the lead role in a task force working on an operational mode adopting the “whole-of-society approach”. All government agencies and instrumentalities were mandated by EO 120 to take part. After eight months of work, the TF-BBB has made significant gains in pursuing rehabilitation and post-recovery initiatives. DENR has realised that problems such as this needs to consider all factors affecting the whole watershed catchment basin where floods occur. Environmental advocates and experts often refer to this approach as the ridge-to-reef initiative. "In the months since we set out to work in November last year, we have now set into motion significant post-disaster recovery initiatives in three priority geographic areas involving the restoration of Cagayan, Marikina, and Bicol River basins," DENR Secretary and TF-BBB chair Roy A. Cimatu said. Cagayan River Dredging: Agencies in Action Cimatu and TF-BBB co-chairperson Secretary Mark A. Villar of the Department of Public Works and Highways (DPWH) led the ceremonial dredging of sandbars along Cagayan River’s constricted midstream and planting of Bamboo seedlings on the riverbank of Barangay Bangag in the town of Lal-lo, Cagayan last 2 February 2021. After removing the sandbar obstacles that impede water from flowing freely, the roots of planted Bamboos should serve as a soil binder to keep the riverbank intact in the future. There are three priority sandbars to remove near the Magapit bridge, measuring about 235 hectares with an estimated volume of seven million cubic meters, according to TF-BBB statements captured by the media. The first phase of DPWH dredging operations targeted this choke point which a past study identified as the cause of flooding in Tuguegarao City and other settlements near the riverbanks. TF-BBB in Region 2 is chaired by Regional Executive Director Gwendolyn Bambalan of the DENR and co-chaired by Regional Director Loreta Malaluan of the DPWH. In her message during one of the virtual sessions of the task force, Director Bambalan lauded the different government agencies for their support to the Build Back Better initiatives in the region. "The regional TF-BBB is not only addressing the protection and conservation of the environment but also the welfare of barangays and families affected by the restoration of the Cagayan River," Director Bambalan said. In that meeting, the DPWH discussed the dredging operation and riverbank protections works. The Department of Human Settlement and Urban Development gave an update on the status of resettlement projects while the Office of Civil Defence reviewed the improvement of systems and essential services. The Department of Trade and Industry also presented its accomplishments on livelihood projects. For its part, the Department of the Interior and Local Government presented its agenda for strengthened governance and mainstreaming of disaster-risk reduction and climate change action. Representatives of the Land Registration Authority also attended the meeting. The LRA will be the partner agency of the DENR for the easement recovery along the Cagayan River. The Technical Education and Skills Development Authority (TESDA) has trained residents who were eventually hired as laborers and equipment operators to help carry out the dredging operations. TF-BBB has also engaged the Department of Labour and Employment (DOLE) to provide employment assistance to 120 residents for the planting and nurturing of bamboo trees in Tuguegarao City and the towns of Alcala, Enrile, and Gattaran. This will be implemented through DOLE's "Tulong Panghanapbuhay sa Ating Disadvantaged/Displaced Workers" or TUPAD program. Magat Dam blamed In many reports published and echoed in mainstream media and social media, the opening of the Magat Dam floodgates was blamed as the cause of flooding. The National Irrigation Administration (NIA) came out with a fact check to clear its liability. Even the Senate initiated moved to investigate the matter. NIA’s acting department manager of Public Affairs and Information Office, Eden Victoria Selva, came up with a comprehensive technical response, explaining that the Magat river is just one of the many river systems draining to the Cagayan River. “It is noted that the carrying capacity of the Cagayan River is 25,400 m3/s while the maximum volume of water released from the Magat Dam is only 6,706 m3/s indicating that water discharge of Magat Dam due to Typhoon Ulysses is not the main cause of massive flooding in the provinces of Isabela and Cagayan,” Selva said in an article that appeared in INQUIRER.net on 10 June 2021. The controversial statements blaming the Magat Dam’s release of water also aroused public perception that points responsibility to the occupants of watershed areas in the upstream of Magat River. Those affected by the floods were quick to call for punitive actions against watershed occupants, including calls to ban mining in the province of Nueva Vizcaya, including those issued with legitimate permits to operate. Sharing the Burden of Watershed Restoration and Protection In the watersheds upstream of the Magat River, a 10-year project co-funded by the Republic of the Philippines and the Japan International Cooperation Agency is nearing completion. It is called the Forestland Management Project (FMP), a sequel of the several forestry sector projects implemented by the DENR’s Forest Management Bureau in the last 30 years. FMP is a holistic approach in Community Based Forest Management Agreement (CBFMA) areas in sub-watersheds in the upper areas of the Cagayan River, particular the provinces of Nueva Vizcaya, Ifugao and Quirino. FMP is also present in the Upper Pampanga River in Nueva Ecija and in Jalaur River in Iloilo. Anselmo Cabrera, an Institutional Development Specialist working at the Central Project Management Office of the FMP at the DENR Central Office, has proposed a cost sharing mechanism that Watershed Management Councils should develop for mainstreaming. He said there must be a system where every citizen or institution using water can pay for environmental services performed by duty-bearers protecting and maintaining watersheds. Through a cost sharing mechanism, communities living in critical watershed areas will be compensated for their efforts to ensure there is sufficient forest cover. With this scheme, upland farmers could minimize soil erosion by planting permanent crops instead of clearing spots to plant vegetables and other short-term cash crops. The FMP has so far initiated several hundred of hectares planted with coffee, Guyabano, Rambutan, and other fruit bearing trees. About 35 people’s organizations benefitting over 5,000 households, mostly from Kalanguya, Ibaloi, Isinai, Iwak and Ifugao indigenous cultural communities, LGUs were also called to take a more active role in watershed protection. Cabrera welcomes the favourable result of the Mandanas Ruling, where local governments won in getting their share in revenues collected outside the Bureau of Internal Revenue. The Supreme Court has ruled that LGUs can now get a share from the collection of the Bureau of Customs and other national revenues. Information available from the Department of Budget Management (DBM) revealed LGUs, which include provinces, municipalities, and barangays, could get as much as 37% increase in their internal revenue allotments from the national government in 2022. A DBM advisory directed LGUs to use these additional money to fund the full devolution of services, of which, integrated social forestry is one. Nueva Vizcaya Governor Carlos M. Padilla made a friendly overture when nasty comments were posted over social media by angry residents of Tuguegarao City who wallowed in deep floods for several days after Typhoon Ulysses. Some people accused people in Nueva Vizcaya of denuding the watersheds. Relief goods from Nueva Vizcaya were immediately sent in flood-stricken areas, a gesture that Cagayan Governor Manuel Mamba deeply appreciated publicly. He also called for collaboration between people downstream and upstream of the Cagayan River to understand and take actions together. During the last Watershed Management Council meeting, Gov. Padilla reiterated the importance of collaboration and networking to save watershed commons. He recalled a 2018 agreement with stakeholders which includes big water users such as SN Aboitiz and NIA, the two institutions managing the Magat hydropower and irrigation dam in Ramon, Isabela. Also included in the public pledge of support to the 2018 Nueva Vizcaya Declaration on Water are thousands of farmer’s organizations using water resources for irrigation and water utilities, like Solano Water and other entities providing services to majority of urban households. Watershed Management Councils were potent avenues for collaboration in watershed protection and maintenance. In Davao, a bulk water project implemented by Apo Agua Infrastructura, Inc. mentioned in a webinar that the Watershed Management Council has played a crucial role in mobilising communities and people. The TF-BBB in Cagayan Valley experience could be one of the best in the current administration’s whole-of-society approach in big projects. By mobilising both government agencies and communities, it has covered all areas of concern from the top of mountain ridges to the reefs in the sea. It would be exciting to measure if the impacts are indeed better ten years from now.
Philippine Resources - June 22, 2021
DENR studies possible lifting of ban on open-pit mining
The Department of Environment and Natural Resources (DENR) is still studying the possible lifting of the ban on open-pit mining, Malacañang said on Thursday. Presidential Spokesperson Harry Roque clarified that Executive Order No. 130, signed by President Rodrigo Duterte on April 14, does not include a lifting of the ban on open-pit mining. EO 130, which lifts the nine-year moratorium on mineral agreements, is to spur economic growth and support projects and programs of the government. “There is nothing in the executive issuance on mining which is EO No. 130 which lifts the ban on open-pit mining. I have conferred with [DENR] USec. Benny Antiporda and he says the matter is still being studied by the DENR,” Roque said in a Palace press briefing. He, however, reiterated that open-pit mining remains unacceptable for Duterte. In November 2017, Duterte said he agreed with the open-pit mining ban given the environmental damage it causes. Duterte, in his third State-of-the-Nation Address (SONA) on July 23, 2018, also warned the mining industry not to destroy the environment, saying environmental protection is one of his government’s priorities. “To the mining industry, I say this once again and maybe for the last time, do not destroy the environment or compromise our resources; repair what you have mismanaged,” Duterte said. Roque reiterated Duterte’s call to the mining industry to find other ways to extract minerals without destroying the environment. “But I understand from USec. Benny Antiporda that both the President and Secretary [Roy] Cimatu agreed that the mining industry must reinvent mining in a manner that would ensure that it is sustainable and would cost the least damage to the environment,” he added. Open-pit mining is allowed under Philippine law, but Duterte has rejected previous recommendations to lift the ban. The Philippines is the world’s biggest supplier of nickel ore and also among the top producers of copper and gold.
Philippine Resources - June 21, 2021
Villar: Estrella-Pantaleon Bridge On-Track for July 2021 Opening
Photo Credit: Department of Public Works and Highways Public Works and Highways Secretary Mark Villar reassured on Friday, June 18, 2021 that remaining civil works are being fast-tracked to open the new and modernized Estrella-Pantaelon Bridge by next month. “We are here on-site to show you that all substructure and superstructure of the Estrella-Pantaelon Bridge have been constructed and we are confident that we will be able to finish remaining works on approach road and ancillary/miscellaneous works by July 2021,” said Secretary Villar. Secretary Villar together with BCDA President & CEO and Presidential Adviser for Flagship Programs and Projects Secretary Vince Dizon, Transportation Secretary Arthur Tugade and DPWH Undersecretary for Unified Project Management Office (UPMO) Operations Emil K. Sadain inspected the substantially completed Estrella Pantaleon Bridge following an on-site Press Conference on Progress Update of Build, Build, Build Program. Citing a report from Undersecretary Sadain, Secretary Villar noted that the ongoing bridge project across Pasig River linking Estrella Street in Makati City and Barangka Drive in Mandaluyong City is now 93 percent complete. When completed, the new Estrella-Pantaleon Bridge widened from two (2) lanes to four (4) lanes is expected to accommodate as much as 50,000 cars daily, improving traffic situation in the area and decongesting the Epifanio delos Santos Avenue. The bridge-modernization project is implemented by the DPWH-UPMO Roads Management Cluster 1 (Bilateral) and is funded under a Chinese Grant together with Binondo-Intramuros Bridge. Article Courtesy of the Department of Public Works and Highways