Results 21 to 30 of about 7,334 (224)

Structure of amorphous aluminosilicates obtained from mineral transformation: Potential path for partial remediation of alkaline bauxite residues

Environmental Advances, 2021
Highly alkaline wastes known as bauxite residue are the abundant byproducts of refining bauxite into alumina through the Bayer process, and worldwide estimates of these bauxite residue stockpiles exceed 3 billion tons, with hundreds of millions of tons ...
David L. Bollinger, Jessica Erickson, Nicholas Stone-Weiss, Arumala Josiah Lere-Adams, Sam Karcher, Idil Deniz Akin, John S. McCloy   +6 more
doaj   +1 more source

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

The Nature of Thorium in Bauxite and Bauxite Residue from Greece [PDF]

, 2015
Gamaletsos, Platon, Godelitsas, Athanasios, Göttlicher, Jörg, Kasama, Takeshi, Kuzmin, Alexei, Pontikes, Yiannis, Steininger, Ralph   +6 more
core   +2 more sources

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

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

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

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

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

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.
Takaya KITAJIMA, Eiki KASAI
openaire   +2 more sources