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Willy Andrés Kracht Gajardo

Director/Associate Professor

Universidad de Chile

Santiago, Chile

Integration of Renewable Energies to Mining and Metallurgical Processes; Climate Change and Mining; Mineral Processing; Process Modelling;

Mining and Materials Engineering, MCGILL UNIVERSITY. Chile, 2008
Ciencias de la Ingeniería, Mención Metalurgia Extractiva, UNIVERSIDAD DE CHILE. Chile, 2004
Ingeniero Civil Químico, UNIVERSIDAD DE CHILE. Chile, 2004
Licenciado en Ciencias de la Ingeniería, Mención Química, UNIVERSIDAD DE CHILE. Chile, 2002

Associate Professor Full Time

Universidad de Chile

Faculty of Physical and Mathematical Sciences

Santiago, Chile

2018 - At present
Assistant Professor Full Time

UNIVERSIDAD DE CHILE

Faculty of Physical and Mathematical Sciences

Santiago, Chile

2009 - 2017
Instructor Full Time

UNIVERSIDAD DE CHILE

Faculty of Physical and Mathematical Sciences

Santiago, Chile

2005 - 2008

Subsecretario Full Time

Ministerio de Minería

Santiago, Chile

2022 - 2023
Director (Board of Directors) Other

ENAMI

Chile

2022 - 2023
Director (Board of Directors) Other

Center for Copper and Mining Studies - CESCO

Santiago, Chile

2019 - 2022
Director (Board of Directors) Other

Institute of Clean Technologies

Chile

2024 - At present

Díaz, K. (2024). Port infrastructure for hydrogen in Chile: Evaluation of regulations for its export. Master's thesis. Universidad de Chile. Supervised

Moraga, C. (2023). Geometallurgical modelling of water consumption in mineral processing. PhD thesis, Universidad de Chile. Supervised

Araya, C. (2023). Development of a procedure to prioritize technologies for the reduction of CO2 emissions in the copper mining industry in Chile. Master’s thesis, Universidad de Chile. Supervised

Yanten, C. (2022). Application of deep learning to complement phenomenological modelling of flotation process at industrial scale. Master’s thesis, Universidad de Chile. Supervised

Vergara, J. (2022). Design of a solar-biogas hybrid energy system for a mining process in Chile considering technical, economic and environmental aspects. Master’s thesis, Universidad de Chile. Co-supervised

Sepulveda, D. (2022). Development of a methodology for copper extraction using hydrogen peroxide at laboratory scale to estimate maximum recovery in heap bioleaching. Master’s thesis, Universidad de Chile. Co-supervised

Avalos, S. (2021). Advanced predictive methods applied to geometallurgical modelling. PhD thesis, Queens University, Canada. Co-supervised

Ebisu, Y. (2018). Behaviour of locked fine particles of the copper sulfides in the deposit of Arqueros project. Master’s thesis, Universidad de Chile. Supervised

San Martín, F. (2018). Biodepression of pyrite with acidithiobacillus ferrooxidans in seawater flotation. PhD thesis, Universidad de Chile. Supervised

Fuenzalida, O. (2018). Model predictive control of froth flotation processes aided by a dynamic simulator. Master’s thesis, Universidad de Chile. Supervised

Pamparana, G. (2017). Simulating the operation of a copper SAG mill, integrated with photovoltaic solar energy and a battery energy storage system. Master’s thesis, Universidad de Chile. Supervised

Morales A., F. (2017). Studying the interaction between seawater and lime in mineral processing systems. Master’s thesis, Universidad de Chile. Supervised

Schwarze, J. F. (2017). Pre-treatment of bituminous copper ore previous to froth flotation. Master’s thesis, Universidad de Chile. Co-supervised

Álvarez, M. (2016). Water/rock interaction and physical-chemical controls in mineral processing: effect of aluminium, calcium and magnesium ions. Master’s thesis, Universidad de Chile. Supervised

Montes, H. (2015). Geometallurgical modelling of the flotation process based on mineralogy and metallurgical tests. Master’s thesis, Universidad de Chile. Supervised

Mesa, D. (2015). Study of the effect of frother type and concentration on froth formation in presence of clays. Master’s thesis, Universidad de Chile. Supervised

Lois, P. (2015). Study of the water-rock interaction during grinding and the physicochemi- cal/geochemical impacts on flotation: Case study on Escondida porphyry. Master’s thesis, Universidad de Chile. Co-supervised

Guarda, N. (2015). Effect of controlled cooling on the energy consumption and recovery of valuable elements in copper smelter slag processing. Master’s thesis, Universidad de Chile. Supervised

Sepúlveda, F. (2015). Evaluation of the use of solar energy in copper electro-wining. Bachelor’s thesis, Universidad de Chile. Supervised

Rothen, R. (2015). Insertion of renewable energies in mining processes. Bachelor’s thesis, Universidad de Chile. Co-supervised

Moraga, C. (2014). Measurement of bubble size using sound and determination of critical coalescence concentration curves at laboratory scale. Master’s thesis, Universidad de Chile. Supervised

Lorca, J. (2014). Technical economical evaluation of using seawater in a concentrator. Bachelor’s thesis, Universidad de Chile. Supervised

Osses, B. (2014). Methodology for generating a spatial model of copper rougher concentrate grade. Bachelor’s thesis, Universidad de Chile. Co-supervised

Kracht, W., Salinas, B., 2021. Minería y Cambio Climático (Mining and Climate Change), Santiago, Chile. ISBN 978-95619-1210-6.

Ortiz, J.M., Kracht, W., 2020. Big Data en geometalurgia: casos aplicados. in Big Data en Minería, 102-129, Santiago, Chile. ISBN 978-956-19-1185-7.

Díaz-Ferrán, G., Haas, J., Chudinzow, D., Moreno-Leiva, S., Pamparana, G., Eltrop, L., Palma-Behnke, R., Kracht, W., 2019. Carpe Solem: Solar Mining Opportunities for Chile: A review from science, Santiago, Chile. ISBN 978-956-19-1166-6.


Flexible copper: Exploring capacity-based energy demand flexibility in the industry Moreno-Leiva, Simon; Haas, Jannik; Nowak, Wolfgang; Kracht, Willy; Eltrop, Ludger; Breyer, Christian Article ISI ENERGY (2024)
Chile: On the road to global sustainable mining Guzman, Juan Ignacio; Karpunina, Alina; Araya, Constanza; Faundez, Patricio; Bocchetto, Marcela; Camacho, Rodolfo; Desormeaux, Daniela; Galaz, Juanita; Garces, Ingrid; Kracht, Willy; Lagos, Gustavo; Marshall, Isabel; Perez, Victor; Silva, Javier; Toro, Ignacio; Vial, Alejandra; Wood, Alejandra Article ISI RESOURCES POLICY (2023)
Water consumption assessment in mineral processing integrating weather information and geometallurgical modeling MORAGA-VERGARA, CARLOS; Kracht, W.; ORTIZ-CABRERA, JULIAN MAXIMILIANO Article ISI SCOPUS MINERALS ENGINEERING (2023)
Heating Pre-Treatment of Copper Ores and Its Effects on the Bond Work Index Cisternas, Nataly; Tobosque, Pablo; Sbarbaro, Daniel; Munnier, Carlos; Kracht, Willy; Carrasco, Claudia Article ISI Minerals (2022)
Integration of renewable energy into the copper mining industry: A multi-objective approach Vergara-Zambrano, J.; Kracht, W.; Diaz-Alvarado, Felipe A. Article ISI JOURNAL OF CLEANER PRODUCTION (2022)
Process simulation to determine blending and residence time distribution in mineral processing plants Moraga, Carlos; Kracht, Willy; Ortiz, Julian M. Article ISI MINERALS ENGINEERING (2022)
Biodepression of Copper-Activated Pyrite with Acidithiobacillus ferrooxidans in Flotation with Fresh and Seawater San Martin, Francisca; Valles, Ignacio; Kracht, Willy; Vargas, Tomas; Aguilar, Claudio Article ISI Minerals (2021)
Electrochemical Characterization of Sulphide Minerals-Halophilic Bacteria Surface Interaction for Bioflotation Applications Gonzalez-Poggini, Sergio; Consuegra, Guillermo Luque; Kracht, Willy; Rudolph, Martin; Colet-Lagrille, Melanie Article ISI METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE (2021)
Integration of seawater pumped storage and desalination in multi-energy systems planning: The case of copper as a key material for the energy transition Moreno-Leiva, Simon; Haas, Jannik; Nowak, Wolfgang; Kracht, Willy; Eltrop, Ludger; Breyer, Christian Article ISI APPLIED ENERGY (2021)
The use of solar energy in the copper mining processes: A comprehensive review Behar, O.; Pena, R.; Kouro, S.; Kracht, W.; Fuentealba, E.; Moran, L.; Sbarbaro, D. Article ISI CLEANER ENGINEERING AND TECHNOLOGY (2021)
An LSTM Approach for SAG Mill Operational Relative-Hardness Prediction Avalos, Sebastian; Kracht, Willy; Ortiz, Julian M. Article ISI Minerals (2020)
Attachment of Acidithiobacillus ferrooxidans to pyrite in fresh and saline water and fitting to Langmuir and Freundlich isotherms San Martin, Francisca; Kracht, Willy; Vargas, Tomas Article ISI BIOTECHNOLOGY LETTERS (2020)
Copper mining: 100% solar electricity by 2030? Haas J.; Moreno-Leiva S.; Junne T.; Chen P.-J.; Pamparana G.; Nowak W.; Kracht W.; Ortiz J.M. Article ISI SCOPUS (2020)
Machine Learning and Deep Learning Methods in Mining Operations: a Data-Driven SAG Mill Energy Consumption Prediction Application Avalos, Sebastian; Kracht, Willy; Ortiz, Julian M. Article ISI MINING METALLURGY & EXPLORATION (2020)
Mechanisms of pyrite biodepression with Acidithiobacillus ferrooxidans in seawater flotation San MartÃn F.; Kracht W.; Vargas T.; Rudolph M. Article ISI SCOPUS (2020)
Optimization of a SAG Mill Energy System: Integrating Rock Hardness, Solar Irradiation, Climate Change, and Demand-Side Management Ortiz J.M.; Kracht W.; Pamparana G.; Haas J. Article ISI SCOPUS MATHEMATICAL GEOSCIENCES (2020)
Change of support using non-additive variables with Gibbs Sampler=> Application to metallurgical recovery of sulphide ores Garrido, M; Ortiz, JM; Villaseca, F; Kracht, W; Townleye, B; Miranda, R Article Computers and Geosciences (2019)
Exploring the effect of the geological texture at meso and micro scale on grinding performance DÃaz E.; Pamparana G.; Voisin L.; Kracht W.; MartÃnez P. Article ISI SCOPUS MINERALS ENGINEERING (2019)
Studying the integration of solar energy into the operation of a semi-autogenous grinding mill. Part I=> Framework, model development and effect of solar irradiance forecasting Pamparana G., Kracht W.; Haas J., Ortiz J.M.; Nowak W., Palma-Behnke R. Article Minerals Engineering (2019)
Studying the integration of solar energy into the operation of a semi-autogenous grinding mill. Part II=> Effect of ore hardness variability, geometallurgical modeling and demand side management Pamparana G., Kracht W.; Haas J., Ortiz J.M.; Nowak W., Palma-Behnke R. Article Minerals Engineering (2019)
The influence of seawater on magnetite tailing rheology Reyes, Cristian.; Alvarez, Matias; Ihle, Christian F.; Contreras, Matias; Kracht, Willy Article ISI SCOPUS MINERALS ENGINEERING (2019)
Biodepression of pyrite using Acidithiobacillus ferrooxidans in seawater San Martin, F.; Kracht, W.; Vargas, T. Article ISI SCOPUS MINERALS ENGINEERING (2018)
The relevance of water recirculation in large scale mineral processing plants with a remote water supply Ihle, Christian F.; Kracht, Willy Article ISI SCOPUS JOURNAL OF CLEANER PRODUCTION (2018)
Using advanced mineral characterisation techniques to estimate grinding media consumption at laboratory scale Diaz, E.; Voisin, L.; Kracht, W.; Montenegro, V. Article ISI SCOPUS MINERALS ENGINEERING (2018)
Integrating photovoltaic solar energy and a battery energy storage system to operate a semi-autogenous grinding mill Pamparana, G.; Kracht, W.; Haas, J.; Díaz-Ferrán, G.; Palma-Behnke, R.; Román, R. Article ISI SCOPUS JOURNAL OF CLEANER PRODUCTION (2017)
Towards solar power supply for copper production in Chile: Assessment of global warming potential using a life-cycle approach Moreno-Leiva S.; Díaz-Ferrán G.; Haas J.; Telsnig T.; Díaz-Alvarado F.A.; Palma-Behnke R.; Kracht W.; Román R.; Chudinzow D.; Eltrop L. Article ISI SCOPUS JOURNAL OF CLEANER PRODUCTION (2017)
Acoustic measurement of the bubble Sauter mean diameter d32 Kracht, W.; Moraga, C. Article Minerals Engineering (2016)
Effect of surfactant type on the entrainment factor and selectivity of flotation at laboratory scale Kracht, W.; Orozco Y.; Acuna, C Article ISI SCOPUS MINERALS ENGINEERING (2016)
Indirect measurement of frother concentration based on l-CCC curves Kracht, W.; Hunt, C. Article ISI SCOPUS MINERALS ENGINEERING (2016)
Textural image classification of foams based on variographic analysis Mesa, D.; Kracht, W.; Díaz, G. Article Minerals Engineering (2016)
A stochastic approach for measuring bubble size distribution via image analysis Kracht, W.; Emery, X; Paredes C. Article ISI SCOPUS International Journal of Mineral Processing (2013)
Study of the local critical coalescence concentration (l-CCC) of alcohols and salts at bubble formation in two-phase systems Kracht, W.; Rebolledo H. Article ISI SCOPUS Minerals Engineering (2013)
Using Two-Point Set Statistics to Estimate the Diameter Distribution in Boolean Models with Circular Grains Emery, X; Kracht, W.; Egana, A.; Garrido, F Article ISI SCOPUS Mathematical Geosciences (2012)
Effect of frother on initial bubble shape and velocity Kracht, W.; Finch, JA Article ISI SCOPUS International Journal of Mineral Processing (2010)
Geometallurgical modelling of the Collahuasi flotation circuit Suazo, CJ; Kracht, W.; Alruiz, OM Article ISI SCOPUS Minerals Engineering (2010)
Influence of frothers on bubble shape and velocity close to the generation point Kracht, W.; Finch J. Article SCOPUS XXV International Mineral Processing Congress 2010, IMPC 2010 (2010)
Bubble break-up and the role of frother and salt Kracht, W.; Finch, JA Article ISI SCOPUS INTERNATIONAL JOURNAL OF MINERAL PROCESSING (2009)
Using sound to study bubble coalescence Kracht, W.; Finch, JA Article ISI SCOPUS JOURNAL OF COLLOID AND INTERFACE SCIENCE (2009)
Controlling bubble size using a grit and sleeve sparser Kracht, W., Gomez, C.O., Finch, J.A. Article MINERALS ENGINEERING (2008)
Comparing the effect of salts and frother (MIBC) on gas dispersion and froth properties Quinn, J.J., Kracht, W., Gomez, G.O., Gagnon, C., Finch, J.A. Article MINERALS ENGINEERING (2007)
Characterization and modeling of bubbles size distribution in mechanical flotation cells Vallebuona G.; Casali, A.; Kracht, W. Article ISI REVISTA DE METALURGIA (2005)
Rate constant modelling for batch flotation, as a function of gas dispersion properties Kracht, W.; Vallebuona G.; Casali, A. Article ISI SCOPUS MINERALS ENGINEERING (2005)


Workflows in geometallurgical prediction: Challenges and outlook Ortiz J.M.; Kracht, W.; Townley B.; Lois, P; Cardenas, E.; Miranda, R.; Alvarez M. ConferencePaper SCOPUS Proceedings of IAMG 2015 - 17th Annual Conference of the International Association for Mathematical Geosciences (2015)


Development of tools for scouting risk management scenarios for climate change and develop adaptation strategies in mining Kracht, Willy Proyecto Develop a procedure to assess the risk of climate change and propose adaptation strategies for the mining sector. (2021)
Advanced Mining Technology Center (AMTC) PIA (AFB180004) Proyecto 2019-2022 Inv. Principal
Chilean-Australian solar mining network PCI (REDES18019) Proyecto 2018-2020 Director(a)
Caracterización y modelamiento geo minero metalúrgicos predictivos=> camino a la minería del futuro. FONDEF (IT16M10002) Proyecto 2017-2019 Subdirector(a)
Geo-mining-metallurgical characterization and predictive modelling: towards the future mining Brian Townley; Willy Kracht Proyecto Integration of geometallurgical characterization, process modelling, geostatistical tools, and image textural/structural analysis, to develop predictive models in extractive metallurgy and mineral processing. (2017)
Bioflotation of sulfides in seawater=> evaluation of potential application of biocomponents in copper ore processing with seawater (BS2) PCI (BMBF150026) Proyecto 2016-2019 Director(a)
LOFTING FLOWS OF CONCENTRATED SLURRIES FONDECYT (1160971) Proyecto 2016-2020 Coinvestigador(a)
Solar Mining Rodrigo Palma-Behnke; Willy Kracht; Roberto Román Proyecto Development of a roadmap for the integration of solar energy and mining. The project is a joint project between Universidad de Chile and the University of Stuttgart. (2015)
Solar Mining Chile PCI (BMBF201419) Proyecto 2015-2018 Coinvestigador(a)
FONDAP=> Solar Energy Research Center (SERC-CHILE) FONDAP (15110019) Proyecto 2013-2023 Coinvestigador(a)
Desarrollo de un sensor continuo para medir distribución de tamaño de burbujas en celdas de flotación en base a emisiones sonoras. Corfo Innova (11IDL2-10687) Proyecto 2012-2014 Director(a)
Study of bubble coalescence prevention in the presence of frothers by means of bub- ble acoustic emissions in flotation systems Willy Kracht Proyecto Studying, both theoretically and experimentally, bubble coalescence in presence of frothers and other agents, e.g., mineral particles and salts. (2011)
Study of bubble coalescence prevention in the presence of frothers by means of bubble acoustic emissions in flotation systems FONDECYT (1110173) Proyecto 2011-2013 Inv. Principal
Advanced Mining Technology Center, AMTC PIA (FB0809) Proyecto 2009-2019 Subdirector(a)


Renewable energy in copper production: A review on systems design and methodological approaches Moreno-Leiva S.; Haas J.; Junne T.; Valencia F.; Godin H.; Kracht W.; Nowak W.; Eltrop L. Review ISI SCOPUS (2020)