Results 31 to 40 of about 7,380 (225)

Co-Calcination of Bauxite Residue With Kaolinite in Pursuit of a Robust and High-Quality Supplementary Cementitious Material

Frontiers in Materials, 2022
The present article investigates the potential of co-calcination with kaolinite as a sector-wide solution for the transformation of bauxite residue into an effective supplementary cementitious material (SCM).
Arne Peys, Tobias Hertel, Ruben Snellings   +2 more
doaj   +1 more source

Alkali-reduced Bauxite Residue as Novel SCM

Nordic Concrete Research, 2020
Bauxite residue is a major waste stream available in large volumes globally that can cause risks to the surrounding environment (e.g. ecotoxicity) when disposed and stored by conventional methods.
Danner Tobias, Sletnes Malin, Justnes Harald   +2 more
doaj   +1 more source

Recovery of Scandium, Aluminum, Titanium, and Silicon from Iron-Depleted Bauxite Residue into Valuable Products: A Case Study

Crystals, 2022
Bauxite residue is a high-iron waste of the alumina industry with significant contents of scandium, aluminum, and titanium. This study focuses on the recovery of Sc, Al, Ti, and Si from iron-depleted bauxite residue (IDBR) into valuable products.
Pavel Grudinsky, Liliya Pasechnik, Anfisa Yurtaeva, Valery Dyubanov, Dmitry Zinoveev   +4 more
doaj   +1 more source

Modification of bauxite residue with oxalic acid for improved performance in intumescent coatings [PDF]

, 2021
Valorization of bauxite residue (BR) enhances the dynamics of its application in intumescent coating for fire retarding systems. This BR, an alumina production waste could contain up to 45% ferrous oxide along with residual aluminous minerals.
Ahmad, Ambikadevi, Antunes, Arogundade, Aziz, Borra, Cao, Chen, Couperthwaite, Couperthwaite, De Silva, Deelwal, Dittrich, Duquesne, Evans, Hawthorne, Hoekstra, Jayalatharachchi, Johnstone, Kaußen, Kawashima, Khalili, Khalili, Khatibi, Kong, Lee, Mariappan, Ortelli, Panias, Qian, Rai, Ruan, Saikia, Scribot, Smičiklas, Thompson, Ullah, Wang, Xue, Yan, Yang, Yasir, Yew, Zhang   +43 more
core   +1 more source

Reduction behavior of iron in the red mud [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy, 2021
Red mud or bauxite residue contains significant quantities of industrial metals such as Fe, Al, and Ti, as well as rare earth elements such as Sc, Ce, and La.
Eray S., Keskinkilic E., Topkaya Y.A., Geveci A.   +3 more
doaj   +1 more source

The aggregation effect of organic matter on bauxite residue particles and its improvement mechanism

Frontiers in Environmental Science, 2023
Introduction: Understanding organic amendment and the agglomeration of bauxite residue particles is vital to soil amelioration of bauxite residues. In this study, a pot culture experiment was conducted to illustrate the aggregation of organic amendment ...
Mengyang Dong, Guizhen Wang, Zafran Gul Wazir, Jing Liu, Guoqin Hou, Xinyu Gao, Liang Chao, Fangxu Rong, Yuzhi Xu, Mingyue Li, Kai Liu, Aiju Liu, Hongliang Liu   +12 more
doaj   +1 more source

Direct Phosphoric Acid Leaching of Bauxite Residue for Selective Scandium Extraction

Metals, 2022
Bauxite residue, the high alkaline and fine-grained byproduct of Bayer process for alumina’s production, is a material rich in numerous minerals and elements of high value and techno-economical interest in high tech applications such as rare earths ...
Lamprini-Areti Tsakanika, George Panagiotatos, Theopisti Lymperopoulou, Elias Chatzitheodoridis, Klaus Ochsenkühn, Maria Ochsenkühn-Petropoulou   +5 more
doaj   +1 more source

The effects of leaching from alkaline red mud on soil biota: modelling the conditions after the Hungarian red mud disaster [PDF]

, 2013
A soil column experiment was set up to investigate the effect of red mud from Ajka (Hungary) on a typical soil profile from the concerned area. The chemical changes caused by the leachate of the red mud and the effects of these changes on living ...
András Makó, Attila Anton, Benedetti A, Bulich AA, Katalin Gruiz, Kádár I, Lakanen E, Lorch HJ, Márk Rékási, Nikolett Uzinger, Németh T, Szépvölgyi J, Tyurin IV, Viktória Feigl, Wiles JA   +14 more
core   +1 more source

An Investigation on Reduction of Calcium Added Bauxite Residue Pellets by Hydrogen and Iron Recovery through Physical Separation Methods

Metals, 2023
This study investigates the properties of H2-reduced calcium-added bauxite residue, self-hardened pellets, and the feasibility of iron recovery through electrostatic and magnetic separation methods.
Ahmad Hassanzadeh, Manish K. Kar, Jafar Safarian, Przemyslaw B. Kowalczuk   +3 more
doaj   +1 more source

Microbially-driven strategies for bioremediation of bauxite residue [PDF]

Journal of Hazardous Materials, 2015
Globally, 3 Gt of bauxite residue is currently in storage, with an additional 120 Mt generated every year. Bauxite residue is an alkaline, saline, sodic, massive, and fine grained material with little organic carbon or plant nutrients. To date, remediation of bauxite residue has focused on the use of chemical and physical amendments to address high pH,
Santini, Talitha C., Kerr, Janice L., Warren, Lesley A.   +2 more
openaire   +5 more sources