Environmental Management Strategies in the Copper Mining Industry in Chile to Address Water and Energy Challenges—Review
Abstract
:1. Introduction
- (1)
- What are the water and energy challenges that Chile’s copper mining industry is facing?
- (2)
- What are the relevant EMIs that the copper mining industry in Chile uses to address the identified challenges?
- (3)
- How can mining companies benefit from EMIs?
- (4)
- The results of this research were outlined according to these research questions.
2. Literature Review
2.1. The Mining Industry in Chile
2.2. Sustainability Effort
3. Materials and Methods
3.1. Scope of the Study, Data, and Method
3.2. Database Selection
Topic | Relevant Aspects | Authors |
---|---|---|
Environmental management strategies | Evidence regarding the use of seawater in mining with an emphasis on its use in Chile. | [9] |
Relevance of water-related data disclosures presented in corporate sustainability reports. Use the water footprint as a tool to standardise the impact associated with the mining process. | [45] | |
Potential water supply solution to an integrated system. One relevant alternative is to improve the recirculation water system from tailings storage. | [46] | |
Assessment of water risk and the climate change exposition. Relevance of the resilience that mining companies need to create. | [10] | |
A review of sustainable development in the Chilean mining industry: past, present, and future. | [17] | |
Diverse and sustainable strategies for the Chilean mining industry through a local model according to the region. | [26] | |
Diverse study cases regarding sustainable practices and efficient use of water in the mining industry. | [7] | |
Innovation as a drive to keep the competitiveness in the mining industry in Chile, and the need to encourage public–private partnerships. | [47] | |
A study regarding the minerals industry’s response to sustainable development in waste disposal. | [48] | |
Discussion for diverse issues and drivers to implement solar technologies in the mining industry in Chile. | [13] | |
A study of Life Cycle Assessment (LCA) regarding the impact of energy production and the analysis of the integration of solar technologies. | [12] | |
This research compares and studies the corporate-sponsored community development and social legitimacy of two mining operations as a study of cases in Chile. | [25] | |
A study of solar thermal technologies. | [49] | |
Mining sector in Chile | This work presents a multi-objective optimisation approach to designing integrated water supply systems for the mining industry. | [50] |
Potential model to predict copper demand which evaluates challenges of the industry such as ore grades, energy and water consumptions, GHG emissions, and generation and disposal of tailings. | [51] | |
Cost analysis regarding water consumption and diverse alternatives. | [52] | |
Water and energy challenges | Lack of water in the northern territory in Chile and desalination plants can be an alternative to supplying water. | [32] |
Problems regarding water scarcity and sustainability, which generate the conflict between diverse stakeholders regarding water access. | [53] | |
Information about the decline of the copper ore grade, which will continue. Thus, because of the ore grade reduction, the energy requirements will increase. | [54] | |
Study regarding water conflict between different stakeholders and the lack of water availability. | [20] | |
Study regarding mining and glaciers. | [55] | |
Scientific evidence about glacier changes and the conflict because of the Pascua Lama mining project. | [56] | |
Two industries that generate a decline in water quality in Elqui River are the mining and agriculture industry—Water Quality Assessment. | [57] | |
Different legal problems related to conflicts between different stakeholders because of the use of water. | [58] | |
Proofs that climate change, and mining activity, can put these water sources at risk. | [59] | |
Study of glaciers and the sustainability issues with mining operations. | [60] | |
Water conflict between diverse stakeholders, especially mining and agricultural industries. An analysis of the water scarcity index for different regions in Chile. | [8] | |
An analysis of the fossil fuel dependency of the energy system in Chile. | [15] | |
Impact of the mining industry on settlements and communities, a mining space characterisation. | [5] |
3.3. Analysis of Data
4. Results
4.1. Water and Energy Challenges of Chilean Mining Companies
4.2. Water Challenges
4.3. Energy Challenges
4.4. Initiatives Taken by the Companies to Address Water and Energy Challenges
4.4.1. Initiatives for Water Challenges
4.4.2. Initiatives for Energy Challenges
5. Discussion
5.1. Initiatives for Water Challenges and Their Benefits
5.2. Initiatives for Energy Challenges and Their Benefits
6. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
Appendix A. Diagram for the Research Process
References
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Organisation | Operation | Environmental Management Initiatives | Water Scarcity | Collaboration with Stakeholders in Hydric Aspects | Improve Glaciers’ Management | Water Pollution | Water Quality |
---|---|---|---|---|---|---|---|
Anglo American | All operations | WM system | √ | - | - | √ | √ |
Application SEAT | - | √ | - | √ | √ | ||
El Soldado | Community strategic plan | √ | √ | - | - | √ | |
Coarse particle flotation (CPF) | √ | - | - | - | - | ||
Los Bronces | Water recirculation system | √ | - | - | √ | - | |
Water balance | √ | - | - | - | √ | ||
Improvement in a rural water system | √ | √ | - | - | √ | ||
Collahuasi | Collahuasi | WM system | √ | - | - | √ | √ |
Water recirculation system | √ | - | - | √ | - | ||
Community strategic plan | √ | √ | - | √ | √ | ||
Seawater use | √ | √ | - | √ | √ | ||
Antofagasta Minerals | All operations | Community strategic plan | √ | √ | - | √ | √ |
WM system | √ | - | - | √ | √ | ||
Water balance | √ | - | - | - | √ | ||
Monitoring quality of water | - | √ | - | √ | √ | ||
Water recirculation system | √ | - | - | √ | - | ||
A pilot project to protect glaciers | - | - | √ | - | - | ||
Antucoya | Seawater use | √ | √ | - | √ | √ | |
Centinela | Seawater use | √ | √ | - | √ | √ | |
Thickened tailings technology | √ | - | - | √ | - | ||
Los Pelambres | Research new treatment of acidic water | - | - | - | √ | √ | |
Seawater use—project | √ | √ | - | √ | √ | ||
BHP Chile | All operations | WM system | √ | - | - | √ | √ |
Water balance | √ | - | - | - | √ | ||
Monitoring quality of water | - | √ | - | √ | √ | ||
Escondida | Seawater use | √ | √ | - | √ | √ | |
Cerro Colorado | Wetland recovery | √ | √ | - | - | - | |
Spence | Seawater use—project | √ | √ | - | √ | √ | |
CODELCO | All operations | Environmental risks management system | √ | - | - | √ | √ |
Monitoring quality of water | - | √ | - | √ | √ | ||
Water recirculation system | √ | - | - | √ | - | ||
Seawater use—project | √ | √ | - | √ | √ | ||
Andina | Modification of current open pit | - | √ | √ | - | - | |
Community strategic plan | √ | √ | - | √ | √ | ||
Salvador | Community strategic plan | √ | √ | - | √ | √ | |
Radomiro Tomic | Use of thermal film—water reduction | √ | - | - | - | - | |
Thickened tailings technology—project | √ | - | - | √ | - | ||
Teck Chile | All operations | Environmental Management System | √ | - | - | √ | √ |
Community strategic plan | √ | √ | - | √ | √ | ||
Quebrada Blanca | Seawater use—project | √ | √ | - | √ | √ | |
KGHM International | Sierra Gorda | Seawater use without desalination process | √ | √ | - | √ | √ |
Thickened tailings technology—project | √ | - | - | √ | - |
Operation | Continental Water (Millions of m3) 1 | Seawater (Millions of m3) 1 | Total Water Use (Millions of m3) 1 | Water Reuse | The Main EMIs to Face Water Challenges Detected | Benefits Associated to EMIs |
---|---|---|---|---|---|---|
Anglo American. All global operations | 34.24 | - | 34.24 | 89% | Work with communities and authorities program. | Reduction in water conflicts with stakeholders—enhance the relationship. |
Water Management System. | By 2017 1.4 million m3 less than in 2017. | |||||
Anglo American, El Soldado | 6.56 | - | 6.56 | 80% | Coarse particle flotation (CPF). | It is expected to save around 20% of water consumption. |
Anglo American, Los Bronces | 26.5 | - | 26.54 | 85% | Improvement in a rural water system. | In 2020, water availability for communities incremented by 20%. |
Recirculation System from concentrator plant to grinding process—pumping system. | Reduction in water consumption was around 48% by 2013. | |||||
Anglo American, Chagres | 1.14 | - | 1.14 | 99% | - | - |
Collahuasi | 33 | - | 33.17 | 76.7% | A new project of a desalination plant. | By 2025, it expects to reduce by 70% the water extraction rates from the water basin. |
TTD technology | To reduce the percentage of water in tailings. | |||||
Project to enhance drinking water and irrigation systems for communities under the influence. | 14 Km of irrigation canals for communities, reducing water conflicts with diverse stakeholders. | |||||
Community strategic plan. | Reduction in water conflicts with stakeholders—enhance the relationship. | |||||
Antofagasta Minerals, all global operations | 30.6 | 34.7 | 65.4 | 80–96% | The seawater as the focus for reducing continental water use. | The seawater use will account for 90% of total water consumption in 2025. It helps to reduce the hydric stress and conflict with water rights. |
Community strategic plan. | Reduction in water conflicts with stakeholders—enhance the relationship. | |||||
Antofagasta Minerals, Antucoya | 0.0 | 5.8 | 5.78 | - | Seawater use. Antucoya uses 100% without desalination for all the operation. | Reduce the hydric stress and conflict with water rights. |
Antofagasta Minerals, Centinela | 2.7 | 29.0 | 31.62 | - | Seawater—around 90% from desalination process. | Reduce the hydric stress and conflict with water rights. |
TTD technology | Increase the percentages of solids in the tailings to around 65%, reducing water consumption in the tailing dam. | |||||
Antofagasta Minerals, Los Pelambres | 21.2 | - | 21.25 | - | Desalination plant with a capacity of 800 L/s by 2025. | Reduction to 100% of the use of continental water and the dependency of water rights. |
The project “Somos Choapa” with local communities. | Enhanced water access for communities under the influence—34 Km of irrigation canals for communities. Reduction in water conflicts with stakeholders—enhance the relationship. | |||||
Research a new treatment of acidic water. | Define a long-term sustainable treatment system—competitive advantages. | |||||
Antofagasta Minerals, Zaldivar | 6.7 | - | 6.72 | - | - | - |
BHP, Global all operation | 14.4 | 96.7 | 111.2 | - | Management system based on water stewardship framework from ICMM. | Risk identification and associated action plans. |
Water balance for all operations in Chile. | To improve stakeholder collaborations and transparency. | |||||
Monitoring systems in diverse points. | Reduction in water conflicts with stakeholders—ensure no polluted water, avoid fines. | |||||
BHP, Escondida | 3.9 | 96.7 | 100.68 | - | Seawater use—two desalination plants—one of the largest in South America 2500 L/s. | Reduction in superficial and/or underground water consumption—ensuring water availability and reducing problem with water rights. |
BHP, Cerro Colorado | 4.1 | - | 4.07 | - | To recover an aquifer, ensuring the ecology flow. | Reduction in water conflicts with stakeholders—enhance the relationship. |
BHP, Spence | 6.4 | - | 6.41 | - | Seawater use. Project to build a new desalination plant, 1000 L/s. | Reduction in superficial and/or underground water consumption—ensuring water availability for the expansion project. |
CODELCO, all global operations | 186.4 | - | 186.4 | 76.9% | WM strategy to ensure efficient use of the hydric resources. | Plan strategies to reduce 10% of freshwater consumption. |
Monitoring systems in diverse extraction points. | Reduction in water conflicts with stakeholders—ensure no polluted water, avoid fines. | |||||
Project to build a new desalination plant, 800 L/s to supply water to the northern operations. | Reduction in freshwater consumption—ensuring water availability. | |||||
CODELCO, Teniente | 59.6 | - | 59.65 | - | - | - |
CODELCO, Chuquicamata | 65.3 | - | 65.30 | 87% | - | - |
CODELCO, Gaby | 5.9 | - | 5.90 | 87% | - | - |
CODELCO, Andina | 25.9 | - | 25.88 | Modification of the current open-pit mine—moving it to another area. | To avoid the destruction of glaciers—ensuring a sustainable operation and avoid fines. | |
Improvement in the rural drinking water system for some communities. | Reduction in water conflicts with stakeholders—enhance the relationship. | |||||
CODELCO, Salvador | 20.2 | - | 20.17 | - | ||
CODELCO, Radomiro Tomic | 9.5 | - | 9.50 | 90% | Use of thermal film on the dynamic leach piles. | Save around 70% to 80% of the water used to leach. |
Thickened tailings technology—percentages of solid can reach 67%. | More stable tailings and higher percentages of water recovery. | |||||
TECK, all global operations | 12.4 | - | 12.4 | - | Cooperation with stakeholders regarding hydric resources. | Improve the water scarcity condition in the area with different stakeholders. |
TECK, Quebrada Blanca | 1.7 | - | 1.74 | - | Project to build a new desalination plant, 1300 L/s. | Reduction in continental water consumption. |
TECK, Carmen de Andacollo | 10.7 | - | 10.67 | - | - | - |
Sierra Gorda | 0.95 | 30.6 | 31.59 | - | The use of seawater, without desalination in its process, from the cooling operation of a thermoelectric plant. | 100% of the total water from the sea—a reduction in hydric stress. |
Organisation | Operation | Environmental Management Initiatives | Reduction in Energy Consumption | Energy Cost Reduction | Improve Energy Efficiency | Reduce Fossil Fuels Dependency | Climate Change |
---|---|---|---|---|---|---|---|
Anglo American | All operations | Energy and climate change management system | √ | √ | √ | √ | √ |
NCRE agreements | - | - | - | √ | √ | ||
El Soldado | Optimisation of processes | √ | √ | √ | - | - | |
Los Bronces | Optimisation of processes | √ | √ | √ | - | - | |
Innovation project | √ | √ | √ | √ | √ | ||
Energy efficiency plan | √ | √ | √ | - | - | ||
Pilot floating photovoltaic | √ | √ | - | √ | √ | ||
Chagres | Plan of reduction in energy consumption | √ | √ | √ | - | √ | |
Collahuasi | Collahuasi | Energy and climate change management system | √ | √ | √ | √ | √ |
Platform—online measurement of variables | √ | - | √ | - | - | ||
Use of NCRE | - | √ | - | √ | √ | ||
Carbon footprint measure | - | - | - | √ | √ | ||
Antofagasta Minerals | All operations | Energy and climate change management system | √ | √ | √ | √ | √ |
Use of NCRE | - | √ | - | √ | √ | ||
Los Pelambres | Use of NCRE | - | √ | - | √ | √ | |
Use of NCRE | - | √ | - | √ | √ | ||
Innovation project | √ | √ | √ | √ | √ | ||
Optimisation of processes | √ | √ | √ | - | √ | ||
Centinela | Use of NCRE | - | √ | - | √ | √ | |
NCRE agreements | - | - | - | √ | √ | ||
Optimisation of processes | √ | √ | √ | - | √ | ||
Zaldivar | Use of NCRE | - | √ | √ | √ | √ | |
NCRE agreements | - | - | - | √ | √ | ||
Antucoya | Optimisation of processes | √ | √ | - | √ | √ | |
BHP Chile | All operations | Climate change management system | √ | √ | √ | √ | √ |
Escondida | Electric central to natural gas | - | - | - | - | √ | |
Energy efficiency plan | √ | √ | √ | - | - | ||
Energy balance | √ | √ | √ | - | - | ||
Optimisation of processes | √ | √ | √ | - | - | ||
NCRE agreements | - | √ | - | √ | √ | ||
Spence | NCRE agreements | - | √ | - | √ | √ | |
Energy efficiency plan | √ | √ | √ | - | - | ||
CODELCO | All operations | Energy and climate change management system | √ | √ | √ | - | √ |
NCRE agreements | - | - | - | √ | √ | ||
Electric vehicles | - | √ | - | √ | √ | ||
Teniente | Innovation project | √ | √ | √ | √ | √ | |
Hybrid LHD | - | √ | - | √ | √ | ||
Chuquicamata | Use of NCRE | - | √ | - | √ | √ | |
Optimisation of processes | √ | √ | √ | - | √ | ||
Andina | Optimisation of processes | √ | √ | √ | - | √ | |
Gaby | Use of NCRE | √ | √ | - | √ | √ | |
Salvador | Innovation project | - | √ | - | √ | √ | |
Teck Chile | All operations | Energy efficiency plan | √ | √ | √ | - | - |
Quebrada Blanca | Use of NCRE | - | √ | - | √ | √ | |
Carmen de Andacollo | Optimisation of processes | √ | √ | √ | - | √ | |
Use of NCRE | - | √ | - | √ | √ |
Operation | Energy Consumption Miles GJ 2,3 | Energy Efficiency GJ/tCu 1,2 | GHG Emissions tCO2e 2 | GHG Emissions Intensity tCO2e/tCu 1,2 | The Main EMIs to Face Energy Challenges Detected | Benefits Associated to EMIs |
---|---|---|---|---|---|---|
Anglo American, All global operations | 11,337.0 | 30.6 | 1,065,008.0 | 2.9 | NCRE agreement, 3 terawatt-hours per year. | CO2 emissions by around 70%. |
Anglo American, El Soldado | - | - | Improvement in the energy efficiency of haul trucks by reducing RPM of the engine. | Reduce operational cost and improve energy efficiency. | ||
Anglo American, Los Bronces | - | - | - | - | Energy Management System. | Reduction of 4.9% in its energy during 2017. In addition, it helps to reduce GHG by 4.0%. |
A prototype of start/stop for trucks. | A reduction in fuel consumption of 0.5% by 2016. | |||||
Photovoltaic plant on a tailings dam. | By 2020 it generated 510 GJ and reduced 54 tCO2e. | |||||
Big Data—computational tools. | By 2017 a reduction of 3% in energy consumption. | |||||
Anglo American, Chagres | - | - | Energy efficiency plan. | A reduction of 6.4% energy consumed and 4.4% in tCO2e by 2017. | ||
Collahuasi | 11,576.0 | 20.5 | 1,853,287.0 | 2.9 | Increased boiler efficiency by 10%. | Expected reduction of 700,000 kWh/year. |
NCRE agreement. | By 2025, 100% of the electrical energy will be from renewable energy. It would allow the company to reduce around 394 thousand tons of GHG from scope 2. | |||||
Antofagasta Minerals, all global operations | 24,121.0 | 31.3 | 2,345,212.0 | 3.2 | Use of NCRE. | Around 21% of the company’s total energy comes from NCRE. |
Antofagasta Minerals, Antucoya | 2143.0 | 29.8 | 272,664.0 | 3.4 | Reduction in fuel consumption in the mining haul trucks by a logistic strategy. | A reduction of 2161 m3 of diesel a year, which is around 6461 tCO2e/year. |
A reduction in the size of ore feed by optimizing its processes. | An energy saving of 2744 MWh and a reduction in emissions of 1088 tCO2e per year. | |||||
Antofagasta Minerals, Centinela | 10,398.0 | 37.6 | 1,034,516.0 | 4.2 | Solar thermal—substitution of around 55% of the diesel consumed for solar energy. | Saving around USD 2,000,000 per year. |
NCRE agreement. | All its energy from renewable sources by 2022. | |||||
Optimization of processes by Mine to Mill initiative. | A reduction of 58,148 MWh/year in electricity and 23,421 tCO2e a year. | |||||
Antofagasta Minerals, Los Pelambres | 8120.0 | 22.3 | 722,293.0 | 2.0 | Solar energy—energy generation from a photovoltaic plant. | Solar and wind energy produce 59% of the total energy required—reduction in GHG of the mining production |
Wind energy—energy generation from a wind farm “El Arrayan”. | Solar and wind energy produce 59% of the total energy required—reduction in GHG of the mining production. | |||||
Innovative system, energy generation by its conveyor belts. | Around 10% of the total energy requirement. | |||||
VFD installed on one of the impulsion pumps. | This strategy represented a saving of 1548 MWh/year and a reduction of 587 tCO2e/year in emissions. | |||||
Optimization of processes with different actions such as a performance increment SAG or in the efficiency of the coarse ore transport system. | A reduction of 87,463 MWh/year in electricity, 37,764 tCO2e/year and 674,409 L of diesel a year. | |||||
Antofagasta Minerals, Zaldivar | 3460.0 | 29.8 | 315,028.0 | 3.3 | Biomass—creation of centre called CEADA. | Reducing the GHG and generating adaptation for some species in arid zones. |
Renewable energy agreement with Colbun S.A (electricity generator and distributor). | From 2020, the operation uses only electricity from renewable sources. Reduction in scope 2 GHG emissions by 67,615 tCO2e. | |||||
BHP, all global operations | 39,668.8 | 28.91 | 5,024,000.0 | 3.7 | Management system—to identify different risks and implement activities to reduce GHG Emission. | Reduce cost and GHG emissions—seeking new energy resources. |
BHP, Escondida | 32,334.1 | 27.97 | 4,180,000.0 | 3.9 | The organization modified the project into a natural gas combined-cycle unit (Kelar). | By 2017, they Reduced around 203,344 tCO2e per year. |
Hecker project cathode—alternating current for the copper deposition (electrowinning process). | A reduction of around 11 GWh a year. | |||||
An agreement with an electricity supplier to ensure a 100% renewable power source. | A reduction in GHG, seeking zero GHG emissions from scope 2. This change would reduce around 3320 k tCO2e. | |||||
Change to the design and materials of ball mills. | Energy consumption reduction between 3 to 5%, which represents 30,000 MWh/year. | |||||
BHP, Cerro Colorado | 2976.0 | 43.19 | 244,000.0 | 3.7 | - | - |
BHP, Spence | 4358.7 | 29.73 | 600,000.0 | 3.4 | Energy efficiency strategy to improve the EW process. | Savings of 5% per year in electrical energy in the EW process, which is around 7,431,026 kWh/year. |
Change in mining trucks to Komatsu 980E electric trucks. | Saving of 7% in fuel for trucks. | |||||
An agreement with an electricity supplier to ensure a 100% renewable power source. | A reduction in GHG, seeking zero GHG emissions from scope 2. This change would reduce around 400 k tCO2e. | |||||
CODELCO, all global operations | 51,954 | 32.11 | 4,532,359 | 2.8 | KPIs regarding energy efficiency and a corporate regulation about this topic for new projects. | Reduce cost and GHG emissions—seeking new energy resources and to foster energy efficiency. |
The organization modified some agreements of electric supply for the northern operations. | Around 22.5% of the total energy consumed will be from renewable energy sources. | |||||
CODELCO, Teniente | 9642 | 21.8 | 888,081.0 | 2.0 | Use of renewable energy—a runoff river mini-power plant which uses tailing as an energy source. | Plant produces 2.4 MW (around 20,000 MWh/year). |
Hybrid LHD. | A reduction in diesel consumption of over 25% and operational cost of 30%. | |||||
CODELCO, Chuquicamata | 12,988 | 32.4 | 1,155,199 | 2.9 | Solar energy—energy generation from a solar plant (Calama Solar 3). | Plants provide 1.1 MWp and a reduction of 1680 tons of CO2 a year. |
VOD—automatically distributes the air according to the instant demand in the mine. | Reduction of around 20% to 50% of the energy consumed. | |||||
NCRE agreement for the electricity supply contract. | 80% of the supply comes from NCRE and it allows a reduction in GHG from scope 2. | |||||
CODELCO, Gaby | 3212 | 31.5 | 269,019 | 2.6 | Solar thermal—a solar thermal plant called Pampa Elvira Solar. | Reduction of around 15,000 tons of CO2 annually. |
CODELCO, Andina | 4982 | 27.0 | 444,227 | 2.41 | VOD—automatically distributes the air according to the instant demand in the mine. | Reduction of around 25% of the energy consumed. |
CODELCO, Salvador | 2688 | 47.7 | 300,059 | 5.33 | New technology through hydrogen as a catalyst in mining haul trucks’ engines—hybrid use of diesel | A reduction of around 10 to 20% of the cost. |
CODELCO, Radomiro Tomic | 9840 | 37.8 | 752,756 | 2.89 | - | - |
CODELCO, Vetanas | 3004 | - | 211,206 | - | - | - |
CODELCO, Ministro Hales | 5597 | 32.8 | 511,812 | 3.00 | - | - |
Teck, Quebrada Blanca | - | 49.7 ** | - | 5.99 ** | Solar energy—agreement with AES Gener to supply energy from renewable sources. | 30% of the total energy consumed for Quebrada Blanca—reduce GHG. |
NCRE agreement for the electricity supply contract. | For the new project QB2, 50% of total operational needs will come from renewable resources. A reduction of 800,000 tCO2e per year. | |||||
Teck, Carmen de Andacollo | 2104 | 34.5 | 211,316 | 3.46 | Optimization in grinding and blasting process—identifies the different hardness in the rock. | Saving around 600,000 USD per year and 2060 tCO2e. |
NCRE agreement for the electricity supply contract. | 100% of renewable energy for the operation. A reduction of 200,000 tCO2e per year. | |||||
Change in medium to fine liners in the lining of the 20 K Plant cone crushers. | A reduction of 4.1 TJ and 471 tCO2e per year. | |||||
The installation of a sizer-type crusher. | An energy reduction of 8.9 TJ and 1042 tCO2e per year. | |||||
Optimization of the lifter angle of the SAG mill. | A reduction of 12.2 TJ of energy and 1413 tCO2e per year. |
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Leiva González, J.; Onederra, I. Environmental Management Strategies in the Copper Mining Industry in Chile to Address Water and Energy Challenges—Review. Mining 2022, 2, 197-232. https://doi.org/10.3390/mining2020012
Leiva González J, Onederra I. Environmental Management Strategies in the Copper Mining Industry in Chile to Address Water and Energy Challenges—Review. Mining. 2022; 2(2):197-232. https://doi.org/10.3390/mining2020012
Chicago/Turabian StyleLeiva González, Jorge, and Italo Onederra. 2022. "Environmental Management Strategies in the Copper Mining Industry in Chile to Address Water and Energy Challenges—Review" Mining 2, no. 2: 197-232. https://doi.org/10.3390/mining2020012
APA StyleLeiva González, J., & Onederra, I. (2022). Environmental Management Strategies in the Copper Mining Industry in Chile to Address Water and Energy Challenges—Review. Mining, 2(2), 197-232. https://doi.org/10.3390/mining2020012