Results 1 to 10 of about 695 (179)
Extraction of scandium from bauxite residue by high-pressure leaching in sulfuric acid solution [PDF]
Heliyon, 2023 Rare earth elements, such as yttrium, scandium, neodymium, and praseodymium, have been reported to be associated with minerals in bauxite and transferred to the refining residue when bauxite is refined to alumina (Al2O3) by Bayer Process.
M.R. Kanekaputra, M.Z. Mubarok
doaj +2 more sources
Bioleaching for critical metal recovery from bauxite residue- unlocking waste valorization [PDF]
Frontiers in Bioengineering and BiotechnologyThe increasing problem of waste from alumina refineries endangers ecosystems and local communities. With over 4 billion tons of bauxite residue stored globally, more than 140 million tons generated annually, and less than 3% currently reused, the ...
Fernanda Soto-Montandon +7 more
doaj +2 more sources
Modes of occurrences of scandium in Greek bauxite and bauxite residue
Minerals Engineering, 2018 Abstract Bauxite and bauxite residue, a by-product of alumina production, were studied using a combination of microanalytical techniques — electron microprobe wavelength dispersive spectrometry, laser ablation inductively coupled plasma mass spectrometry and μ-Raman spectroscopy.
Dimitrios Panias +2 more
exaly +2 more sources
Technospheric Mining of Rare Earth Elements from Bauxite Residue (Red Mud): Process Optimization, Kinetic Investigation, and Microwave Pretreatment [PDF]
Scientific Reports, 2017 Some rare earth elements (REEs) are classified under critical materials, i.e., essential in use and subject to supply risk, due to their increasing demand, monopolistic supply, and environmentally unsustainable and expensive mining practices.
Sable Reid +3 more
doaj +2 more sources
High Temperature Reduction of Bauxite Residue
Materials Proceedings, 2022 The present study focused on investigating the high-temperature reduction of bauxite residue, also known as red mud. A series of reduction experiments on red mud was performed to investigate the influences of temperature (1400, 1450, and 1500 °C ...
Lanjar Grahita +2 more
doaj +2 more sources
Heat-resistant cementitious composites based on binders derived from cement and metallurgical waste [PDF]
Scientific ReportsOne of the main aspects of consideration in building safety and durability in fire and extreme conditions is the high-temperature performance of cementitious composites.
Samal Akimbekova +4 more
doaj +2 more sources
Eco-efficient treatment of hazardous bauxite liquid-residue using acid-activated clays
Cleaner Chemical Engineering, 2022 The alumina industry requires a material capable of reducing the high levels of iron and alkalinity in bauxite liquid-residue in an eco-efficient manner while producing fewer by-products.
Daniel Dodoo +5 more
doaj +1 more source
Heliyon, 2023 Large amounts of bauxite-liquid residue are generated during the production of aluminium, which has detrimental effects on human and environmental health.
Daniel Dodoo +3 more
doaj +1 more source
Journal of Materials Research and Technology, 2023 Bauxite residue, which is a solid waste generated during the production of alumina, contains significant amounts of iron (Fe) and titanium (Ti) resources.
Yuguan Zhang +7 more
doaj +1 more source
Viable Scandium Extraction from Bauxite Residue at Pilot Scale
Materials Proceedings, 2022 Scandium extraction from the Greek bauxite residue has been demonstrated at an industrial pilot plant at MYTILINEOS. This work comes as the result of the H2020 SCALE collaborative research project.
Panagiotis Davris +6 more
doaj +1 more source