Julio César Juárez Tapia
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View article: Physicochemical characterization and expansive-porous evolution of green obsidian from cerro de las navajas under controlled thermal treatments
Physicochemical characterization and expansive-porous evolution of green obsidian from cerro de las navajas under controlled thermal treatments Open
This work presents the first systematic study on the behavior of green obsidian from Cerro de las Navajas (Mexico) under controlled thermal treatments, considering temperature, sample size, and holding time as the main variables. Two types…
View article: La3+/Bi3+ Co-Doping in BaTiO3 Ceramics: Structural Evolution and Enhanced Dielectric Properties
La3+/Bi3+ Co-Doping in BaTiO3 Ceramics: Structural Evolution and Enhanced Dielectric Properties Open
La3+/Bi3+ co-doped BaTiO3 ceramics were synthesized via ball milling followed by heat treatment at 1200 °C according to the Ba1−3xLa2xTi1−3xBi4xO3 formula, with dopant levels ranging from x = 0.0 to 0.006. X-ray diffraction and Rietveld re…
View article: Selective Removal of Arsenic and Antimony by Alkaline Leaching with Sodium Sulfide: Remediation of Metalloids-Contaminated Concentrates from Zimapán, Hidalgo, Mexico
Selective Removal of Arsenic and Antimony by Alkaline Leaching with Sodium Sulfide: Remediation of Metalloids-Contaminated Concentrates from Zimapán, Hidalgo, Mexico Open
Selective alkaline leaching was evaluated to remove arsenic (As) and antimony (Sb) from a polymetallic copper concentrate from Zimapán, Mexico, where these metalloids cause environmental risk and smelter penalties. Batch tests used sodium …
View article: Microstructure and dielectric properties of tetragonal solid solutions type Ba1-3xGd2xTi1-3xEu4xO3 (x = 0.0, 0.0015, 0.01 and 0.05 wt. %)
Microstructure and dielectric properties of tetragonal solid solutions type Ba1-3xGd2xTi1-3xEu4xO3 (x = 0.0, 0.0015, 0.01 and 0.05 wt. %) Open
Solid solutions type Ba1-3xGd2xTi1-3xEu4xO3 whit x = 0.0, 0.0015, 0.01 and 0.05 (wt. %) were synthesized using the solid-state reaction method. The precursors powders were dried at 200°C, decarbonated at 900°C for 12 hours and sintered at …
View article: Polymer-Assisted Tailings Dewatering in Seawater and Continental Water for Copper Flotation
Polymer-Assisted Tailings Dewatering in Seawater and Continental Water for Copper Flotation Open
This study evaluates the use of seawater and continental water in tailings thickening and copper flotation at laboratory scale, focusing on water reuse in mining operations in arid regions. The tailings had a mean particle size of 10 µm, w…
View article: The Effect of Particle Size and Dodecylamine Concentration on the Flotation of Lepidolite in Alkaline Medium
The Effect of Particle Size and Dodecylamine Concentration on the Flotation of Lepidolite in Alkaline Medium Open
Currently, lepidolite is considered an important natural alternative for obtaining lithium, given the difficulty in processing other species containing this metal. However, its mechanical preparation and beneficiation present considerable …
View article: Industrial-Scale Application of Polymer Dewatering for Fine Tailings Disposal
Industrial-Scale Application of Polymer Dewatering for Fine Tailings Disposal Open
The treatment and safe disposal of mining tailings represent one of the main technical and environmental challenges in the contemporary mining industry. The present study aims to evaluate, at laboratory scale, three dewatering techniques a…
View article: Optimization of Sustainable Copper Leaching Using Glycine and Oxidizing Agents in an Alkaline Medium
Optimization of Sustainable Copper Leaching Using Glycine and Oxidizing Agents in an Alkaline Medium Open
The increasing global demand for copper has driven the search for more efficient and sustainable extraction methods, particularly due to the environmental concerns associated with conventional processes. This study investigated the leachin…
View article: Evaluation of Silver Recovery from High-Sulphur Mining Waste Using Thiourea–Oxalate System
Evaluation of Silver Recovery from High-Sulphur Mining Waste Using Thiourea–Oxalate System Open
Mine tailings are a byproduct of mineral extraction and often pose an environmental challenge due to the contamination of soil and water bodies with dissolved metals. However, this type of waste offers the opportunity for the recovery of v…
View article: Evaluation of Silver Recovery from High Sulphur Mining Waste Using the Thiourea-Oxalate System
Evaluation of Silver Recovery from High Sulphur Mining Waste Using the Thiourea-Oxalate System Open
Mine tailings are a byproduct of mineral extraction and often pose an environmental challenge due to the contamination of soil and water bodies with dissolved metals. However, this type of waste offers the opportunity for the recovery of v…
View article: Kinetics of Thermal Decomposition of Carbon Nanotubes Decorated with Magnetite Nanoparticles
Kinetics of Thermal Decomposition of Carbon Nanotubes Decorated with Magnetite Nanoparticles Open
Magnetite nanoparticles were synthesized using the green chemistry technique; ferric chloride was used as a precursor agent and Moringa oleifera extract was used as a stabilizer agent. A black powder, characteristic of magnetite, was obtai…
View article: Dissolution of Lithium Contained in Lepidolite Using Ascorbic Acid: Kinetic and Modeling Analysis
Dissolution of Lithium Contained in Lepidolite Using Ascorbic Acid: Kinetic and Modeling Analysis Open
In this work, a kinetic study and modeling of the decomposition of a rock sample in an ascorbic acid medium with a high content of lepidolite phase were carried out, the results of which are of great importance due to the sample’s high lit…
View article: Residual fly ash from pyrometallurgical processes as a partial replacement for Portland cement in mortars: a study of structural evolution and determination of compressive strength
Residual fly ash from pyrometallurgical processes as a partial replacement for Portland cement in mortars: a study of structural evolution and determination of compressive strength Open
Mortar mixtures were prepared by partial replacement of Portland cement with 0%, 10%, and 15% of residual fly ash to determine the structural evolution and compressive strength at 3, 7, 14, and 28 days. Portlandite, calcite, ettringite, ir…
View article: Depression of Arsenopyrite during Collectorless Flotation in Presence of Aqueous Metal Ions and Inorganic Compounds
Depression of Arsenopyrite during Collectorless Flotation in Presence of Aqueous Metal Ions and Inorganic Compounds Open
Currently, the depression of arsenopyrite during the flotation of base metal mineral sulfides is being continuously studied to reduce its presence in sulfide concentrates of economic interest. In this work, the influence of aqueous metal i…
View article: Structural Evolution and Compressive Strength at 3, 7, 14 and 28 Days of Mixtures of Mortars Substituting Portland Cement for 0, 10 and 15% Fly Ash
Structural Evolution and Compressive Strength at 3, 7, 14 and 28 Days of Mixtures of Mortars Substituting Portland Cement for 0, 10 and 15% Fly Ash Open
Samples of mortar mixtures were prepared substituting the cement Portland (CPC-30R) by 0 (standard), 10 and 15% of fly ash and the structural evolution and compressive strength at 3, 7, 14 and 28 days were determined. The results for stand…
View article: Silver(I) Recovery by Ion Flotation Process from Aqueous Solutions in Cells with Spargers
Silver(I) Recovery by Ion Flotation Process from Aqueous Solutions in Cells with Spargers Open
Extractive metallurgy has recently turned its attention to waste treatment for the recovery of precious metals through innovative metallurgical processes, such as ion flotation. This work studied the influence of several chemical and physi…
View article: Surface Spectroscopy of Pyrite Obtained during Grinding and Its Magnetisation
Surface Spectroscopy of Pyrite Obtained during Grinding and Its Magnetisation Open
During grinding with forged steel media, sulphides such as pyrite undergo surface changes due to the occurrence of oxidation–reduction reactions, which affect its depression during the concentration process. For this reason, in this work, …
View article: Raw data of silver extraction from sodium-silver jarosite using three different lixiviants in alkaline medium
Raw data of silver extraction from sodium-silver jarosite using three different lixiviants in alkaline medium Open
This article presents the raw data of silver concentration ([Ag]) obtained as a function of time (t) from silver leaching experiments, which were conducted using a synthetic sodium-silver jarosite and different complexing agents: thiosulfa…
View article: Decreasing the value of the cell potential using nPt/C|Ti and RuO2|Ti as cathodes in a reactor for electro leaching of electronic e-waste
Decreasing the value of the cell potential using nPt/C|Ti and RuO2|Ti as cathodes in a reactor for electro leaching of electronic e-waste Open
This work has to purpose decrease the value of the cell potential (Ecell) of an electrochemical reactor with a separate compartment with an anionic membrane designed for electro-leaching electronic waste (E-waste). In the anodic compartmen…
View article: STOICHIOMETRY OF THE REACTION OF A POTASSIUM-ARSENIC JAROSITE IN NaOH MEDIUM
STOICHIOMETRY OF THE REACTION OF A POTASSIUM-ARSENIC JAROSITE IN NaOH MEDIUM Open
The jarosite sample was subjected to characterization by dichromatometry, gravimetric analysis, XRD, AAS, ICP, SEM and EDS.The particles of this compound are spherical and made up of rhombohedral microcrystals.The density of potassium jaro…
View article: Effect of Particle Size and Sintering Temperature on the Formation of Mullite from Kyanite and Aluminum Mixtures
Effect of Particle Size and Sintering Temperature on the Formation of Mullite from Kyanite and Aluminum Mixtures Open
The effect of particle size and sintering temperature of the mixtures of kyanite and metallic aluminum related to the thermal transformation of kyanite into primary mullite and free silica was studied. In addition, the reaction between α ‐…
View article: Kinetics of the Thermal Decomposition of Rhodochrosite
Kinetics of the Thermal Decomposition of Rhodochrosite Open
Manganese is a widely used element in the steel industry; its main source is a mineral named rhodochrosite (MnCO3). For industrial usage, rhodochrosite is reduced to different manganese oxides by means of nodulation furnaces. In this study…
View article: CHARACTERIZATION AND STOICHIOMETRY OF THE CYANIDATION REACTION IN NaOH OF ARGENTIAN WASTE TAILINGS OF PACHUCA, HIDALGO, MÉXICO
CHARACTERIZATION AND STOICHIOMETRY OF THE CYANIDATION REACTION IN NaOH OF ARGENTIAN WASTE TAILINGS OF PACHUCA, HIDALGO, MÉXICO Open
A chemical, mineralogical and granulometric characterization of the waste tailings of Pachuca, Hidalgo, Mexico, was conducted.Characterization results indicate that these argentian wastes contain 56 g Ag ton -1 in a quartz matrix, where si…
View article: Kinetic Analysis of the Thermal Decomposition of a Synthetic Mercury Jarosite
Kinetic Analysis of the Thermal Decomposition of a Synthetic Mercury Jarosite Open
Jarosites are widely used in the hydrometallurgical industry of zinc to eliminate iron and other impurities contained in the concentrates. However, these compounds can also incorporate elements of significant environmental concern such as …
View article: Influence of Temperature on the Formation of Ag Complexed in a S2O32−–O2 System
Influence of Temperature on the Formation of Ag Complexed in a S2O32−–O2 System Open
Metallic elements of higher economic value, occurring in the mineralogy of Zimapán, are Pb, Zn, Cu, and Fe; said elements are sold as concentrates, which, even after processing, generally include significant concentrations of Mo, Cd, Sb, A…
View article: Influence of Temperature on the Formation of Ag Complexed in S<sub>2</sub>O<sub>3</sub><sup>2-</sup>-O<sub>2</sub> System
Influence of Temperature on the Formation of Ag Complexed in S<sub>2</sub>O<sub>3</sub><sup>2-</sup>-O<sub>2</sub> System Open
Metallic elements of higher economic value occurring in the mineralogy of Zimapán are Pb, Zn, Cu and Fe, said elements are sold as concentrates, which, even after processing, generally include significant concentrations of Mo, Cd, S…