A5066647600- Minerals Flotation and Separation Techniques
- Geography and Environmental Studies
- Coagulation and Flocculation Studies
- Iron oxide chemistry and applications
- Extraction and Separation Processes
- Bauxite Residue and Utilization
- Tailings Management and Properties
- Clay minerals and soil interactions
- Mineral Processing and Grinding
- Natural Fiber Reinforced Composites
- Fish biology, ecology, and behavior
- Pigment Synthesis and Properties
- Mine drainage and remediation techniques
- biodegradable polymer synthesis and properties
- Membrane Separation Technologies
- Metal Extraction and Bioleaching
- Academic Research in Diverse Fields
- Advanced Cellulose Research Studies
- Fluid Dynamics and Mixing
- Chemistry Education and Research
- Microplastics and Plastic Pollution
- Aluminum Alloy Microstructure Properties
- Dental materials and restorations
- Aluminum Alloys Composites Properties
- Blind Source Separation Techniques
Centro de Tecnologia Mineral
2016-2025
Universidade do Estado do Rio de Janeiro
2024
Universidade Estadual da Zona Oeste
2020
Ministério da Ciência e Tecnologia
2010
Universidade Federal do Rio de Janeiro
1999
Abstract This paper summarizes international state-of-the-art applications and opportunities for employing deploying hydrological, geochemical, isotopic tools in an integrated manner investigations of mining operations. It is intended to aid formulation more approaches evaluating the overall sustainability projects. The focus particularly on mine waters, including: environmental water sources, dynamics, as a source vector pollution wider environment. guidance generic projects not just...
The lithium market has been expanding due to the high demand for lithium-ion batteries, which are essential electric and hybrid vehicles as well portable devices. This driven search new ore deposits development of more efficient extraction processing technologies. main methods used from hard rock ores include acid process, alkaline chlorination roasting. study investigated a process applied α-spodumene extracted in Brazil chloride (LiCl) production. underwent thermal treatment presence...
Abstract In the industrial production of aluminum through Bayer process, two main pollutants are generated, red mud and carbon dioxide (CO2). Conventional processes for treating polluting waste include neutralization with hydrochloric acid (HCl) capture CO2 ethanolamine (CH2(NH2)CH2OH). However, generated can be used to neutralize mud, allowing simultaneous treatment harmful substances reducing amount HCl required mud. The solvent present in is residual alkaline liquor from which absorbs a...
Polyhydroxybutyrate (PHB) is a crystalline and linear biopolymer that biodegradable biocompatible. However, due to its high crystallinity, PHB rigid brittle, limiting applications. The brittleness of can be reduced by incorporating reinforcing fillers. In this context, study aimed produce composites based on matrix mica, as filler. Scanning electron microscopy (SEM) revealed the lamellar structure mica within matrix. Fourier-transform infrared spectroscopy (FTIR) confirmed characteristic...
As propriedades químicas e mineralógicas do flogopitito, uma rocha que contém flogopita,
Composites based on recycled high-density polyethylene (rHDPE) and muscovite mica, with different rHDE/mica ratios (100/0, 95/5, 90/10, 85/15 80/20, weight percentage) were prepared in an internal mixer roller-type rotors at temperature of 170 ºC for 10 minutes. The materials obtained characterized by tests density, Shore hardness D melt-flow index, along infrared spectroscopy, thermogravimetry, differential scanning calorimetry electron microscopy. analysis confirmed the action mica as a...
In this work muscovite was ultrasonically treated to obtain composites with post-industrial wood plastic residues. The ultrasonicated for 30 or 60 min and mixed the polymeric matrix at a constant level of 15% (weight percentage). were prepared in single-screw extruder formed into flat films characterization. SEM images revealed occurrence delamination, while particle size distribution results suggested decrease longer sonication time. FTIR spectra also indicated delamination material....
Muscovite from a Brazilian natural source was beneficiated using knife mills and an ultrasound treatment. It possible to achieve mica with particle size of below 100 above 45 μm thickness between 0.5 1 μm. This product could be used for the synthesis intensely coloured pearlescent pigments based on muscovite covered rare earth oxides (CeO 2 , PrO Ce 0.95 Pr 0.05 O ). Pigments were prepared by hydrolysis characterised X‐ray diffraction, thermal analyses (thermogravimetric/differential...
Mining activities worldwide are subject to serious geotechnical accidents involving tailings dams. Therefore, many studies have focused on dewatering before their deposition. This article the rheological properties of flocculated and thickened nickel in order determine effect initial solid concentration type rheology modifying agents (two anionic polymeric flocculants) stability for disposal The sediment was submitted tests, with vane technique, slump obtain information about static dynamic...