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Ricardo Iván Jeldres Valenzuela

Profesor Asistente

UNIVERSIDAD DE ANTOFAGASTA

Concepción, Chile

Thickening and flotation operations, and rheological studies, in particular, related to the impact of liquor ionic composition on interfacial processes.

Doctorado en Ciencias de la Ingeniería c/m en Ingeniería Química, UNIVERSIDAD DE CONCEPCION. Chile, 2015

Profesor Asistente Full Time

UNIVERSIDAD DE ANTOFAGASTA

2016 - A la fecha

Accademic Part Time

Universidad de Concepción

Chile

2009 - 2009
Scientific Researcher Full Time

CSIRO Chile

Chile

2014 - 2016
Accademic Full Time

University of Antofagasta

Chile

2016 - A la fecha

Dr. Jeldres has collaborated as directed over 10 underground theses in the career of Mineral Processing Engineering of the University of Antofagasta, 2 MSc theses, an currently is supervisor of 4 Ph.D. students.


Improved dispersion of clay-rich tailings in seawater using sodium polyacrylate Jeldres, Matias; Robles, Pedro; Toledo, Pedro G.; Saldana, Manuel; Quezada, Luciano; Jeldres, Ricardo I. Article ISI COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2021)
Temporal evolution of the structure of tailings aggregates flocculated in seawater Leiva, Williams H.; Fawell, Phillip D.; Gon, Christian; Toro, Norman; Jeldres, Ricardo I. Article ISI MINERALS ENGINEERING (2021)
Understanding the flocculation mechanism of quartz and kaolinite with polyacrylamide in seawater: A molecular dynamics approach Quezada, Gonzalo R.; Jeldres, Matias; Toro, Norman; Robles, Pedro; Toledo, Pedro G.; Jeldres, Ricardo, I Article ISI COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2021)
Analysis of Kaolin Flocculation in Seawater by Optical Backscattering Measurements: Effect of Flocculant Management and Liquor Conditions Jeldres, Ricardo I.; Jeldres, Matías; MacIver, Michael R.; Pawlik, Marek; Robles, Pedro; Toro, Norman Article Minerals (2020)
Analysis of the flocculation process of fine tailings particles in saltwater through a population balance model Quezada, Gonzalo R.; Ramos, Jahir; Jeldres, Ricardo I.; Robles, Pedro; Toledo, Pedro G. Article ISI SCOPUS (2020)
Assessment of Silica Recovery from Metallurgical Mining Waste, by Means of Column Flotation Salinas-Rodriguez, Eleazar; Flores-Badillo, Javier; Hernandez-Avila, Juan; Cerecedo-Saenz, Eduardo; Gutierrez-Amador, Ma. del Pilar; Jeldres, Ricardo I.; Toro, Normam Article ISI SCOPUS METALS (2020)
Depression of Pyrite in Seawater Flotation by Guar Gum Castellón, César I.; Piceros, Eder C.; Toro, Norman; Robles, Pedro; López-Valdivieso, Alejandro; Jeldres, Ricardo I. Article ISI SCOPUS METALS (2020)
Describing Mining Tailing Flocculation in Seawater by Population Balance Models: Effect of Mixing Intensity Quezada; Ayala Á.; Leiva Á.; Toro; Toledo; Robles; Jeldres Article ISI SCOPUS METALS (2020)
Dissolution of pure chalcopyrite with manganese nodules and waste water Toro, Norman; Perez, Kevin; Saldana, Manuel; Jeldres, Ricardo, I; Jeldres, Matias; Canovas, Manuel Article ISI SCOPUS JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T (2020)
Enhancing the sedimentation of clay-based tailings in seawater by magnesium removal treatment Jeldres, Matías; Piceros, Eder C.; Toro, Norman; Robles, Pedro; Nieto, Steven; Quezada, Gonzalo R.; Jeldres, Ricardo I. Article ISI SCOPUS SEPARATION AND PURIFICATION TECHNOLOGY (2020)
Improving the Flocculation Performance of Clay-Based Tailings in Seawater: A Population Balance Modelling Approach Quezada, Gonzalo R.; Jeldres, Matias; Robles, Pedro; Toro, Norman; Torres, David; Jeldres, Ricardo I. Article ISI Minerals (2020)
Initial investigation into the leaching of manganese from nodules at room temperature with the use of sulfuric acid and the addition of foundry slag-Part II Perez, Kevin; Villegas, Angelo; Saldana, Manuel; Jeldres, Ricardo I.; Gonzalez, Javier; Toro, Norman Article ISI SCOPUS Separation Science and Technology (Philadelphia) (2020)
Leaching Chalcopyrite with an Imidazolium-Based Ionic Liquid and Bromide Rodríguez, Marcelo; Ayala, Luís; Robles, Pedro; Sepúlveda, Rossana; Torres, David; Carrillo-Pedroza, Francisco Raul; Jeldres, Ricardo I.; Toro, Norman Article ISI SCOPUS METALS (2020)
Leaching Chalcopyrite with High MnO2 and Chloride Concentrations Torres, David; Ayala, Luis; Jeldres, Ricardo I.; Cerecedo-Saenz, Eduardo; Salinas-Rodriguez, Eleazar; Robles, Pedro; Toro, Norman Article ISI SCOPUS METALS (2020)
Leaching of Pure Chalcocite in a Chloride Media Using Waste Water at High Temperature Pérez, Kevin; I. Jeldres, Ricardo; Nieto, Steven; Salinas-Rodríguez, Eleazar; Robles, Pedro; Quezada, Víctor; Hernández-Ávila, Juan; Toro, Norman Article ISI SCOPUS METALS (2020)
Leaching of Silver and Gold Contained in a Sedimentary Ore, Using Sodium Thiosulfate; A Preliminary Kinetic Study Roldán-Contreras, Edmundo; Salinas-Rodríguez, Eleazar; Hernández-Ávila, Juan; Cerecedo-Sáenz, Eduardo; Rodríguez-Lugo, Ventura; I. Jeldres, Ricardo; Toro, Norman Article ISI METALS (2020)
Manganese Nodules in Chile, an Alternative for the Production of Co and Mn in the Future-A Review Toro, Norman; Jeldres, Ricardo I.; Ordenes, Javier A.; Robles, Pedro; Navarra, Alessandro Article ISI Minerals (2020)
Novel treatment for mixed copper ores: Leaching ammonia – Precipitation – Flotation (L.A.P.F.) Conejeros, Víctor; Pérez, Kevin; Jeldres, Ricardo I.; Castillo, Jonathan; Hernández, Pía; Toro, Norman Article ISI SCOPUS (2020)
Partial desalination of seawater for mining processes through a fluidized bed bioreactor filled with immobilized cells of Bacillus subtilis LN8B Arias, Dayana; Villca, Grecia; Pánico, Antonio; Cisternas, Luis A.; Jeldres, Ricardo I.; González-Benito, Gerardo; Rivas, Mariella Article ISI SCOPUS Desalination (2020)
Partial seawater desalination treatment for improving chalcopyrite floatability and tailing flocculation with clay content Cruz C.; Ramos J.; Robles P.; Leiva W.H.; Jeldres R.I.; Cisternas, L.A Article ISI SCOPUS (2020)
Reducing the Magnesium Content from Seawater to Improve Tailing Flocculation: Description by Population Balance Models Quezada, Gonzalo R.; Jeldres, Matías; Toro, Norman; Robles, Pedro; Jeldres, Ricardo I. Article ISI SCOPUS METALS (2020)
Reducing-Effect of Chloride for the Dissolution of Black Copper Torres, David; Perez, Kevin; Trigueros, Emilio; Jeldres, Ricardo I.; Salinas-Rodriguez, Eleazar; Robles, Pedro; Toro, Norman Article ISI SCOPUS METALS (2020)
Seabed mineral resources, an alternative for the future of renewable energy: A critical review Toro, Norman; Robles, Pedro; Jeldres, Ricardo, I Article ISI ORE GEOLOGY REVIEWS (2020)
Seawater flocculation of clay-based mining tailings: Impact of calcium and magnesium precipitation Ramos, Jahir J.; Leiva, Williams H.; Castillo, Claudia N.; Ihle, Christian F.; Fawell, Phillip D.; Jeldres, Ricardo I. Article Minerals Engineering (2020)
Statistical Study for Leaching of Covellite in a Chloride Media Pérez, Kevin; Toro, Norman; Saldaña, Manuel; Salinas-Rodríguez, Eleazar; Robles, Pedro; Torres, David; Jeldres, Ricardo I. Article METALS (2020)
Use of Radial Basis Function Network to Predict Optimum Calcium and Magnesium Levels in Seawater and Application of Pretreated Seawater by Biomineralization as Crucial Tools to Improve Copper Tailings Flocculation Villca, Grecia; Arias, Dayana; Jeldres, Ricardo; Panico, Antonio; Rivas, Mariella; Cisternas, Luis A. Article ISI Minerals (2020)
A Stochastic Model Approach for Copper Heap Leaching through Bayesian Networks Saldana, Manuel; Gonzalez, Javier; Jeldres, Ricardo, I; Villegas, Angelo; Castillo, Jonathan; Quezada, Gonzalo; Toro, Norman Article ISI SCOPUS METALS (2019)
Analysis of Silica Pulp Viscoelasticity in Saline Media: The Effect of Cation Size Jeldres, Ricardo, I; Piceros, Eder C.; Leiva, Williams H.; Toledo, Pedro G.; Quezada, Gonzalo R.; Robles, Pedro A.; Valenzuela, Julio Article ISI SCOPUS Minerals (2019)
Analysis of sodium polyacrylate as a rheological modifier for kaolin suspensions in seawater Robles, Pedro; Piceros, Eder; Leiva, Williams H.; Valenzuela, Julio; Toro, Norman; Jeldres, Ricardo, I Article ISI SCOPUS APPLIED CLAY SCIENCE (2019)
Chemometric Optimisation of a Copper Sulphide Tailings Flocculation Process in the Presence of Clays Castillo, Claudia; Ihle, Christian E.; Jeldres, Ricardo, I Article ISI SCOPUS Minerals (2019)
Copper Tailing Flocculation in Seawater: Relating the Yield Stress with Fractal Aggregates at Varied Mixing Conditions Jeldres, Matias; Piceros, Eder C.; Toro, Norman; Torres, David; Robles, Pedro; Leiva, Williams H.; Jeldres, Ricardo I. Article ISI SCOPUS METALS (2019)
Extraction of Mn from Black Copper Using Iron Oxides from Tailings and Fe2+ as Reducing Agents in Acid Medium Perez, Kevin; Toro, Norman; Campos, Eduardo; Gonzalez, Javier; Jeldres, Ricardo, I; Nazer, Amin; Rodriguez, Mario H. Article ISI SCOPUS METALS (2019)
Leaching Manganese Nodules in an Acid Medium and Room Temperature Comparing the Use of Different Fe Reducing Agents Torres, David; Ayala, Luis; Saldana, Manuel; CANOVAS, MANUEL; Jeldres, Ricardo I.; Nieto, Steven; Castillo, Jonathan; Robles, Pedro; Toro, Norman Article ISI SCOPUS METALS (2019)
Remoción de Calcio y Magnesio en Agua de Mar para Mejorar la Concentración de Sólidos en la Descarga de Espesadores Ricardo I. Jeldres; Eder C. Piceros; Julio A. Valenzuela; Pedro A. Robles Article SCIELO SCOPUS Información tecnológica (2019)
Using Partial Desalination Treatment To Improve the Recovery of Copper and Molybdenum Minerals in the Chilean Mining Industry Cruz, Constanza; Reyes, Arturo; Jeldres, Ricardo, I; Cisternas, Luis A.; Kraslawski, Andrzej Article ISI INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2019)
Viscoelasticity of Quartz and Kaolin Slurries in Seawater: Importance of Magnesium Precipitates Jeldres, Matias; Piceros, Eder; Robles, Pedro A.; Toro, Norman; Jeldres, Ricardo, I Article ISI SCOPUS METALS (2019)
Dynamic moduli of flocculated kaolinite sediments: effect of salinity, flocculant dose, and settling time Jeldres R.I.; Piceros E.C.; Wong L.-S.; Leiva W.H.; Herrera N.; Toledo, P. G. Article ISI SCOPUS Colloid and Polymer Science (2018)
Use of molecular dynamics to study the conformation of an anionic polyelectrolyte in saline medium and its adsorption on a quartz surface Quezada G.R.; Jeldres R.I.; Fawell P.D.; Toledo, P. G. Article ISI SCOPUS Minerals Engineering (2018)
Zeta potential and viscosity of colloidal silica suspensions: Effect of seawater salts, pH, flocculant, and shear rate Romero, CP; Jeldres, RI; Quezada, GR; Concha, F; Toledo, PG Article ISI SCOPUS COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2018)
An improved flotation test method and pyrite depression by an organic reagent during flotation in seawater Jeldres, R.I. Article ISI SCOPUS Journal of the Southern African Institute of Mining and Metallurgy (2017)
The impact of seawater with calcium and magnesium removal for the flotation of copper-molybdenum sulphide ores Jeldres, Ricardo I.; Arancibia-Bravo, Mar?a P.; reyes, Arturo; Aguirre, Claudia E.; Cortes, Lorena; Cisternas, Luis A. Article ISI SCOPUS MINERALS ENGINEERING (2017)
Viscoelastic behaviour of flocculated silica sediments in concentrated monovalent chloride salt solutions Quezada, Gonzalo; Jeldres, Ricardo I.; Go?i, Christian; Toledo, Pedro G.; Stickland, Anthony D.; Scales, Peter J. Article ISI SCOPUS MINERALS ENGINEERING (2017)
Viscoelasticity and yielding properties of flocculated kaolinite sediments in saline water Jeldres, Ricardo I.; Leiva, Williams H.; Toledo, Pedro G.; Piceros, Eder C.; Herrera, Nelson Article ISI SCOPUS COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2017)
Effect of Seawater on Sulfide Ore Flotation: A Review Jeldres, Ricardo; Forbes, Liza; Cisternas, Luis A. Article ISI SCOPUS MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW (2016)
A non-linear viscoelastic model for sediments flocculated in the presence of seawater salts Goni C.; Jeldres, RI; TOLEDO, PG; Stickland, AD; Scales, PJ Article ISI SCOPUS Colloids and Surfaces A: Physicochemical and Engineering Aspects (2015)
Population balance modelling of particle flocculation with attention to aggregate restructuring and permeability Jeldres, RI; Concha, F; TOLEDO, PG Article ISI SCOPUS Advances in Colloid and Interface Science (2015)
Impact of seawater salts on the viscoelastic behavior of flocculated mineral suspensions Jeldres, RI; TOLEDO, PG; Concha, F; Stickland, AD; Usher, SP; Scales, PJ Article ISI SCOPUS COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2014)
Nanoscale adhesive forces between silica surfaces in aqueous solutions Troncoso P.; Saavedra, JH; Acuna, SM; Jeldres, R.; Concha, F; TOLEDO, PG Article ISI SCOPUS JOURNAL OF COLLOID AND INTERFACE SCIENCE (2014)


Effect of different saline water on floatability of copper-molybdenum ores. Jeldres, Ricardo I.; Calisaya, Daniel.; Cisternas, Luis A. ConferencePaper (2015)
Impact of different saline water on floatability of copper-molybdenum ores. Jeldres, Ricardo I.; Cortes, Lorena.; Cisternas, Luis A. ConferencePaper (2015)
Improving testing of copper ore flotation in seawater through novel flotation cell. Jeldres, Ricardo I.; Cortes, Lorena.; Cisternas, Luis A. ConferencePaper (2015)
Impact of seawater salts on the viscoelastic behaviour of flocculated mineral suspensions Jeldres, R.; Scales P.; Usher S.; Stickland A.; Toledo, P; Concha, F ConferencePaper SCOPUS IMPC 2014 - 27th International Mineral Processing Congress (2014)


Flotation of copper-molybdenum ores in seawater and pyrite depression by reagents alternatives to lime. Jeldres, Ricardo I.; Cortes, Lorena.; Cisternas, Luis A. ConferencePoster (2015)


Improving the tailings management and water recovery in mineral processing through novel polymers of advanced architecture Jeldres, Ricardo I. Proyecto (2021)
Understanding the phenomena of particle flocculation to address the current scientific challenges of thickening and tailings transport in Chilean operations Ricardo Jeldres Proyecto (2017)
Centro de Recusos Hidricos para la Agricultura y Mineria (CRHIAM) FONDAP (15130015) Proyecto 2013-2022 Tesista
Flotación de minerales de cobre con aguas salinas INNOVA CORFO (08CM01-18-INNOVA) Proyecto 2010-2013 Tesista
Pore-scale modeling of flow in deformable porous media. Application to iodine leaching of a cylindrical core plug. FONDECYT (1101023) Proyecto 2010-2012 Tesista
Flotation of copper minerals with seawater Concha, Fernando.; Castro, Sergio.; Toledo, Pedro G. Proyecto (0)


The effect of clay minerals on the process of flotation of copper ores - A critical review Jeldres, RI; Uribe, L; Cisternas, LA; Gutierrez, L; Leiva, WH; Valenzuela, J Review ISI SCOPUS APPLIED CLAY SCIENCE (2019)
Population balance modelling to describe the particle aggregation process: A review Jeldres, RI; Fawell, PD; Florio, BJ Review ISI SCOPUS POWDER TECHNOLOGY (2018)

Ricardo Jeldres

Profesor Asistente

UNIVERSIDAD DE ANTOFAGASTA

Concepción, Chile

Norman Toro

Director de Investigación e Innovación FIA

Facultad de Ingeniería y Arquitectura

Universidad Arturo Prat

Iquique, Chile

PEDRO ROBLES

Academico

Pontificia Universidad Católica de Valparaíso

Valparaíso, Chile

Pedro Toledo

Profesor Titular

Departamento Ingeniería Química

UNIVERSIDAD DE CONCEPCIÓN - DEPARTAMENTO DE INGENIERÍA QUÍMICA

Concepción, Chile

Williams Leiva

Académico Docente-Investigador

Universidad San Sebastián

Concepción, Chile

Eder Piceros

Académico

Facultad de Ingeniería y Arquitectura

Universidad Arturo Prat

Iquique, Chile

Gonzalo Quezada

Academico

Departamento de ingeniería en maderas

Universidad del Bío-Bío

concepcion, Chile

Kevin Pérez

Ingeniero de Procesos

SQM

San Pedro de Atacama, Chile

DAVID TORRES

Superintendente de Producción en SQM

SQM

San Pedro de Atacama, Chile

Manuel Saldaña

Académico

Facultad de Ingeniería y Arquitectura

Universidad Arturo Prat

Iquique, Chile

Dayana Arias

Profesora Asistente

FACSA, Biomedico

Universidad de Antofagasta

antofagasta, Chile

Luis Cisternas

Professor

Mineral Process and Chemical Engineering

Universidad de Antofagasta

Antofagasta, Chile

Jonathan Castillo

docente

Ingeniería en metalurgia

Universidad de Atacama

Copiapó, Chile

MANUEL CANOVAS

PROFESOR ASOCIADO

INGENIERÍA METALÚRGICA Y MINAS

UNIVERSIDAD CATOLICA DEL NORTE

ANTOFAGASTA, Chile

Arturo Reyes

Académico

Ingeniería en Minas

Universidad de Antofagasta

Antofagasta, Chile

Grecia Villca

INVESTIGADOR

INGENIERÍA

Universidad de Antofagasta

ANTOFAGASTA, Chile

Mariella Rivas

Profesor Asistente

Biotecnología

Universidad de Antofagasta

Antofagasta, Chile

Constanza Cruz

Académica

Ingeniería Química

Universidad Católica del Norte

Antofagasta, Chile

Leopoldo Gutierrez

Profesor Asociado

Ingeniería Metalúrgica

Universidad de Concepción

Concepción, Chile

Víctor Quezada

Académico

De Ingeniería Metalúrgica y Minas

Universidad Católica del Norte

Antofagasta, Chile

Pía Hernández

Académico

Ingeniería Química y Procesos de Minerales

UNIVERSIDAD DE ANTOFAGASTA

Antofagasta, Chile

eduardo campos

Profesor Asociado

Ciencias Geológicas

UNIVERSIDAD CATÓLICA DEL NORTE

Antofagasta, Chile

MARIA ARANCIBIA

Postdoc

Química

Universidad Católica del Norte

Antofagasta, Chile

Claudia Castillo

Investigadora asociada

AMTC

santiago, Chile

Christian Ihle

Profesor Asociado

Ingeniería de Minas

UNIVERSIDAD DE CHILE

Santiago, Chile

LINA URIBE

Académica

Ingeniería

Universidad deTalca

Curicó, Chile

César Castellón

Postdoctorante

Departamento de Ingeniería Química y Procesos de Minerales

Universidad de Antofagasta

Antofagasta, Chile

Daniel Calisaya

Académico

Departamento de Ingeniería Metalúrgica y de Minas

Universidad Católica del Norte

Antofagasta, Chile

Jorge Saavedra

Académico

Departamento de Ingeniería en Maderas

UNIVERSIDAD DEL BIO-BIO

Concepción, Chile

Amin Nazer

Académico

Ingeniería en Construcción

Universidad de La Serena

La Serena, Chile

Ricardo Iván Jeldres Valenzuela

Líneas de Investigación

Educación

Doctorado en Ciencias de la Ingeniería c/m en Ingeniería Química, UNIVERSIDAD DE CONCEPCION. Chile, 2015

Experiencia Académica

Profesor Asistente Full Time

Experiencia Profesional

Accademic Part Time

Scientific Researcher Full Time

Accademic Full Time

Formación de Capital Humano

Article (48)

ConferencePaper (4)

ConferencePoster (1)

Proyecto (6)

Centro de Recusos Hidricos para la Agricultura y Mineria (CRHIAM)

Flotación de minerales de cobre con aguas salinas

Pore-scale modeling of flow in deformable porous media. Application to iodine leaching of a cylindrical core plug.

Review (2)