Influence of free silica in the production of synthetic aggregates from bauxite residue
Cerâmica, 2023 The residue from the Bayer process has physicochemical characteristics that allow its use in the production of synthetic aggregate, although some characteristics such as low plasticity and water absorption still need better control.
M. B. de Vilhena +3 more
doaj +1 more source
Rare Earths and the Balance Problem: How to Deal with Changing Markets? [PDF]
, 2018 The balance between the market demand and the natural abundance of the rare-earth elements (REEs) in ores, often referred to as the Balance Problem (or the Balancing Problem), is a major issue for REE suppliers.
Binnemans, Koen +3 more
core +2 more sources
Formation, properties and revegetation prospects for bauxite processing residue and the effects of seawater neutralization [PDF]
, 2017 Partial neutralisation of bauxite residue (by treatment with seawater) prior to its deposition in land-based lagoons or impoundments minimises the need to treat the alkaline, sodic drainage both during operation of the alumina refinery and following its ...
Haynes, Richard J., Li, Yaying
core +1 more source
Radiological assessment of the bauxite residue valorization chain [PDF]
Journal of Radioanalytical and Nuclear Chemistry, 2019 The behavior of radionuclides in the bauxite residue valorization chain has been analyzed, and accumulation ratios have been measured for secondary residues produced after recovery of valuable metals. Key analysis outcomes are valid specifically for the processes and raw materials in use at the Aluminium of Greece plant and are as follows: the ...
Andrei Goronovski, Alan H. Tkaczyk
openaire +2 more sources
Comparison of advanced hydraulic properties between treated and untreated bauxite residue [PDF]
E3S Web of Conferences, 2020 Advanced hydraulic characteristics of treated and untreated Bauxite Residue (Red Mud) are studied and compared using a Steady-State Centrifugation (SSC) Unsaturated Flow Apparatus (UFA).
Machado Joao A. R. +3 more
doaj +1 more source
Advances in Understanding Environmental Risks of Red Mud After the Ajka Spill, Hungary [PDF]
, 2016 In the 5 years since the 2010 Ajka red mud spill (Hungary), there have been 46 scientific studies assessing the key risks and impacts associated with the largest single release of bauxite-processing residue (red mud) to the environment.
A Anton +43 more
core +3 more sources
Carbothermic Reduction of Bauxite Residue.
Shigen-to-Sozai, 1999 A recovery method of iron component as metallic phase from bauxite residue (red mud) discharged from Bayer process was examined. Tablets prepared with fine mixtures of red mud and carbonaceous materials were heated up to various temperatures to reduce iron oxides in the red mud.
KITAJIMA, Takaya, KASAI, Eiki
openaire +2 more sources
Optimization of Microwave Reductive Roasting Process of Bauxite Residue
Metals, 2020 In this study, microwave-assisted heating is presented as a suitable method to transform the hematite and goethite contained in bauxite residue into magnetite, wüstite, and metallic iron, with a short processing time.
Chiara Cardenia +2 more
doaj +1 more source
Romanian Journal of Ecology & Environmental Chemistry, 2022 This paper is describing a careful study on content and distribution of rare elements in the fluid and solid phases involved in dry and classified aluminum hydroxide production through Bayer process at Alum SA, Tulcea, Romania.
Lidia Kim +7 more
doaj +1 more source
A review of the potential for rare earth element resources from European red muds: examples from Seydişehir, Turkey and Parnassus-Giona, Greece [PDF]
, 2016 ArticleRare earth elements (REE) are viewed as ‘critical metals’ due to a complex array of production and political issues, most notably a near monopoly in supply from China.
Deady, EA +4 more
core +1 more source