Man

Ricardo Iván Jeldres Valenzuela

Profesor Asistente

UNIVERSIDAD DE ANTOFAGASTA

Concepción, Chile

Líneas de Investigación


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

Educación

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

Experiencia Académica

  •   Profesor Asistente Full Time

    UNIVERSIDAD DE ANTOFAGASTA

    2016 - A la fecha

Experiencia Profesional

  •   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

Formación de Capital Humano


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.



 

Article (48)

Improved dispersion of clay-rich tailings in seawater using sodium polyacrylate
Temporal evolution of the structure of tailings aggregates flocculated in seawater
Understanding the flocculation mechanism of quartz and kaolinite with polyacrylamide in seawater: A molecular dynamics approach
Analysis of Kaolin Flocculation in Seawater by Optical Backscattering Measurements: Effect of Flocculant Management and Liquor Conditions
Analysis of the flocculation process of fine tailings particles in saltwater through a population balance model
Assessment of Silica Recovery from Metallurgical Mining Waste, by Means of Column Flotation
Depression of Pyrite in Seawater Flotation by Guar Gum
Describing Mining Tailing Flocculation in Seawater by Population Balance Models: Effect of Mixing Intensity
Dissolution of pure chalcopyrite with manganese nodules and waste water
Enhancing the sedimentation of clay-based tailings in seawater by magnesium removal treatment
Improving the Flocculation Performance of Clay-Based Tailings in Seawater: A Population Balance Modelling Approach
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
Leaching Chalcopyrite with an Imidazolium-Based Ionic Liquid and Bromide
Leaching Chalcopyrite with High MnO2 and Chloride Concentrations
Leaching of Pure Chalcocite in a Chloride Media Using Waste Water at High Temperature
Leaching of Silver and Gold Contained in a Sedimentary Ore, Using Sodium Thiosulfate; A Preliminary Kinetic Study
Manganese Nodules in Chile, an Alternative for the Production of Co and Mn in the Future-A Review
Novel treatment for mixed copper ores: Leaching ammonia – Precipitation – Flotation (L.A.P.F.)
Partial desalination of seawater for mining processes through a fluidized bed bioreactor filled with immobilized cells of Bacillus subtilis LN8B
Partial seawater desalination treatment for improving chalcopyrite floatability and tailing flocculation with clay content
Reducing the Magnesium Content from Seawater to Improve Tailing Flocculation: Description by Population Balance Models
Reducing-Effect of Chloride for the Dissolution of Black Copper
Seabed mineral resources, an alternative for the future of renewable energy: A critical review
Seawater flocculation of clay-based mining tailings: Impact of calcium and magnesium precipitation
Statistical Study for Leaching of Covellite in a Chloride Media
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
A Stochastic Model Approach for Copper Heap Leaching through Bayesian Networks
Analysis of Silica Pulp Viscoelasticity in Saline Media: The Effect of Cation Size
Analysis of sodium polyacrylate as a rheological modifier for kaolin suspensions in seawater
Chemometric Optimisation of a Copper Sulphide Tailings Flocculation Process in the Presence of Clays
Copper Tailing Flocculation in Seawater: Relating the Yield Stress with Fractal Aggregates at Varied Mixing Conditions
Extraction of Mn from Black Copper Using Iron Oxides from Tailings and Fe2+ as Reducing Agents in Acid Medium
Leaching Manganese Nodules in an Acid Medium and Room Temperature Comparing the Use of Different Fe Reducing Agents
Remoción de Calcio y Magnesio en Agua de Mar para Mejorar la Concentración de Sólidos en la Descarga de Espesadores
Using Partial Desalination Treatment To Improve the Recovery of Copper and Molybdenum Minerals in the Chilean Mining Industry
Viscoelasticity of Quartz and Kaolin Slurries in Seawater: Importance of Magnesium Precipitates
Dynamic moduli of flocculated kaolinite sediments: effect of salinity, flocculant dose, and settling time
Use of molecular dynamics to study the conformation of an anionic polyelectrolyte in saline medium and its adsorption on a quartz surface
Zeta potential and viscosity of colloidal silica suspensions: Effect of seawater salts, pH, flocculant, and shear rate
An improved flotation test method and pyrite depression by an organic reagent during flotation in seawater
The impact of seawater with calcium and magnesium removal for the flotation of copper-molybdenum sulphide ores
Viscoelastic behaviour of flocculated silica sediments in concentrated monovalent chloride salt solutions
Viscoelasticity and yielding properties of flocculated kaolinite sediments in saline water
Effect of Seawater on Sulfide Ore Flotation: A Review,
A non-linear viscoelastic model for sediments flocculated in the presence of seawater salts
Population balance modelling of particle flocculation with attention to aggregate restructuring and permeability
Impact of seawater salts on the viscoelastic behavior of flocculated mineral suspensions
Nanoscale adhesive forces between silica surfaces in aqueous solutions

ConferencePaper (4)

Effect of different saline water on floatability of copper-molybdenum ores.
Impact of different saline water on floatability of copper-molybdenum ores.
Improving testing of copper ore flotation in seawater through novel flotation cell.
Impact of seawater salts on the viscoelastic behaviour of flocculated mineral suspensions

ConferencePoster (1)

Flotation of copper-molybdenum ores in seawater and pyrite depression by reagents alternatives to lime.

Proyecto (6)

Improving the tailings management and water recovery in mineral processing through novel polymers of advanced architecture
Understanding the phenomena of particle flocculation to address the current scientific challenges of thickening and tailings transport in Chilean operations
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.
Flotation of copper minerals with seawater

Review (2)

The effect of clay minerals on the process of flotation of copper ores - A critical review
Population balance modelling to describe the particle aggregation process: A review
58
Ricardo Jeldres

Profesor Asistente

UNIVERSIDAD DE ANTOFAGASTA

Concepción, Chile

18
Norman Toro

Académico

Departamento de Ingeniería Metalúrgica y Minas

Universidad Católica del Norte

Antofagasta, Chile

15
Pedro Toledo

Profesor Titular

Departamento Ingeniería Química

UNIVERSIDAD DE CONCEPCIÓN - DEPARTAMENTO DE INGENIERÍA QUÍMICA

Concepción, Chile

9
Gonzalo Quezada

Investigador Postdoctoral

Departamento de ingeniería química

Universidad de Concepción

concepción, Chile

9
Eder Piceros

Académico

Facultad de Ingeniería y Arquitectura

Universidad Arturo Prat

Iquique, Chile

5
Manuel Saldaña

Académico

Ingeniería Industrial

Universidad Arturo Prat

Antofagasta, Chile

4
Luis Cisternas

Professor

Mineral Process and Chemical Engineering

Universidad de Antofagasta

Antofagasta, Chile

3
Dayana Arias

Investigadora Postdoctoral Fondecyt ANID n° 3210675

FACIMAR

Universidad de Antofagasta

antofagasta, Chile

2
Arturo Reyes

Académico

Ingeniería en Minas

Universidad de Antofagasta

Antofagasta, Chile

2
Constanza Cruz

Académica

Ingeniería Química

Universidad Católica del Norte

Antofagasta, Chile

2
MANUEL CANOVAS

PROFESOR ASOCIADO

INGENIERÍA METALÚRGICA Y MINAS

UNIVERSIDAD CATOLICA DEL NORTE

ANTOFAGASTA, Chile

2
Grecia Villca

INVESTIGADOR

INGENIERÍA

Universidad de Antofagasta

ANTOFAGASTA, Chile

2
Mariella Rivas

Profesor Asistente

Biotecnología

Universidad de Antofagasta

Antofagasta, Chile

1
Víctor Quezada

Académico

De Ingeniería Metalúrgica y Minas

Universidad Católica del Norte

Antofagasta, Chile

1
Pía Hernández

Académico

Ingeniería Química y Procesos de Minerales

UNIVERSIDAD DE ANTOFAGASTA

Antofagasta, Chile

1
eduardo campos

Profesor Asociado

Ciencias Geológicas

UNIVERSIDAD CATÓLICA DEL NORTE

Antofagasta, Chile

1
Claudia Castillo

Investigadora asociada

AMTC

santiago, Chile

1
Leopoldo Gutierrez

Profesor Asociado

Ingeniería Metalúrgica

Universidad de Concepción

Concepción, Chile

1
LINA URIBE

Académica

Ingeniería

Universidad deTalca

Curicó, Chile

1
Christian Ihle

Profesor Asociado

Ingeniería de Minas

UNIVERSIDAD DE CHILE

Santiago, Chile

1
Amin Nazer

Director Departamento de Construcción

Construcción

Universidad de Atacama

Copiapó, Chile

1
Jorge Saavedra

Académico

Departamento de Ingeniería en Maderas

UNIVERSIDAD DEL BIO-BIO

Concepción, Chile

1
César Castellón

Ph.D.

Universidad de Antofagasta

Antofagasta, Chile