A5102866936- Building materials and conservation
- Geological and Geophysical Studies Worldwide
- Archaeological and Historical Studies
- Medieval Architecture and Archaeology
- Archaeological and Geological Studies
- Cultural Heritage Materials Analysis
- Minerals Flotation and Separation Techniques
- Conservation Techniques and Studies
- Rock Mechanics and Modeling
- Historical Studies of Medieval Iberia
- Mineral Processing and Grinding
- Geological and Geochemical Analysis
- Extraction and Separation Processes
- Metallurgical Processes and Thermodynamics
- Mineralogy and Gemology Studies
- 3D Surveying and Cultural Heritage
- Metal Extraction and Bioleaching
- Maritime and Coastal Archaeology
- Mining and Resource Management
- Drilling and Well Engineering
- Cardiac, Anesthesia and Surgical Outcomes
- Geology and Paleoclimatology Research
- Occupational and environmental lung diseases
- Lichen and fungal ecology
- Pharmacovigilance and Adverse Drug Reactions
Instituto Geológico y Minero de España
2014-2025
Universidad de Salamanca
2017-2024
Bureau de Recherches Géologiques et Minières
2023
Fundación Ramón Domínguez
2019
Red de Investigación Cardiovascular
2017
Patrimonio Nacional
2017
Junta de Andalucía
2017
Hospital Universitario de La Princesa
2008
A procedure to recognize individual discontinuities in rock mass from measurement while drilling (MWD) technology is developed, using the binary pattern of structural characteristics obtained in-hole images for calibration. Data two underground operations with different and are considered, which generalizes application methodology sites ensures full operational integration MWD data analysis. Two approaches followed site-specific model building: a discontinuity index (DI) built variations...
This paper describes a practical application of support vector machine (SVM) for ore grading in an underground fluorite mine. It covers all aspects from the inception experiments, data collection, input preparation, model description and results. Forty-eight drilling chips samples are collected while six pseudo-horizontal boreholes at depth intervals half meter their chemical composition determined through X-Ray fluorescence; response drill rig is used to accurately define each sample along...
Chemical X-ray fluorescence (XRF) analyses of drill cuttings and measurement-while-drilling (MWD) records were jointly collected in two production levels with different mineralogical characteristics a narrow vein underground mine. More than 840 chemical samples 23,000 MWD geological geotechnical accompanying data constitute the database used this study. A classification methodology site-specific model developed following approaches: k-means clustering heuristic algorithm to define rock...
Serpentinites are metamorphic rocks constituted primarily by serpentine-group minerals (antigorite, chrysotile, lizardite) resulting from the transformation and low-temperature hydration of previous olivine-rich ultramafic rocks, such as dunite, lherzolite, wehrlite, harzburgite. The peculiar features serpentinites greenish color intricate vein mesh-like texture, well their role in CO2 sequestration when carbonated, have hugely increased interest studying these over recent decades. Moreover,...
Serpentinites are used in both exterior and interior locations, but not all serpentinites equal: they vary physical-mechanical behavior suitable for similar uses. The most commonly worldwide come from India, Pakistan or Egypt. Spain has traditionally quarried two ultramafic massifs, one Galicia (Verde Pirineos) Andalucía Macael). Some of these quarries were small family-run businesses. In cases, rocks commercially available as “green marble.” These have a high degree carbonation, the process...
Abstract Serpentinites from Sierra Nevada (Granada, south of Spain) have traditionally been used as ornamental elements in historical buildings, both indoors and outdoors. The cathedral, the Palace Charles V, Royal Chancellery Granada some others are good examples their use. Outside Granada, serpentinites seen at monastery El Escorial, convent Las Salesas Reales, all them part Madrid's architectural heritage, although there much more to be found across country. There two quarries located...
Serpentinites are characterized by highly variable mineralogical, physical, and mechanical properties. from Moeche (North Western Spain) have been studied to establish their petrographic, textural characteristics, as well physical parameters the factors influencing rock failure, evaluate possible use of these rocks either for new construction or conservation-restoration architectonic heritage region. In this paper, we highlight importance a detailed mineralogical petrographic...
The marble from Macael is one of the most important ornamental stones found in Spain. It has been used not only as a building material but also decorative element, especially type known "White Macael". There evidence its use dating back over 4000 years. One prominent examples Courtyard Lions Alhambra (Granada), it possible to see some elements Roman amphitheatre Mérida (Badajoz), Italica (Sevilla), palace Medina Azahara (Córdoba) and Royal Palace Madrid, amongst dozens palaces churches...
Alternative processes have been proposed for selective separation of fluorite and gangue minerals (carbonates silicates) present in fluorspar ores. Calcination gravity are methods that low efficiency high cost. Flotation is a chemical process becomes important when ore grades required; however, the selectivity inhibited by superficial similarity composition minerals. Accordingly, interactions between dissolved ionic species fluorite, carbonates, silicates with some reagents under determinate...
In this study, two new collectors for fluorite flotation DP-OMC-1033 (DP-I) and DP-OMC-1234 (DP-II) were tested compared with oleic acid (OA), sodium oleate (SO) potassium (PO). According to grade metallurgical recovery, the effect of each collector was determined, both in mechanical pneumatic cell flotation. The temperature on from 25 55 °C studied. Flotation tests showed that best results terms recovery 82.8% 87.9% DP-I DP-II respectively, a dosage 100 g/t using cell. Additionally, grade,...
Fluorite is an important industrial mineral composed of calcium and fluorine (CaF2). This widely distributed through different deposits. However, in most cases, fluorite tightly associated with gangue, such as calcite quartz. In this paper, depressants are tested the flotation two laboratory configurations—cell column. Quebracho tree (QT) was main depressant combination white dextrin (WD), potato starch (PT), carboxymethyl cellulose (CMC), sodium hexametaphosphate (SHMP). The optimum pulp pH...