Results 11 to 20 of about 695 (179)

A calculator for valorizing bauxite residue in the cement industry

Cleaner Materials, 2021
A computational tool using Microsoft Excel was developed to identify opportunities to repurpose bauxite residue as a raw material in the production of Portland cement.
Michael Di Mare, Valerie Nattrodt Monteiro, Victor Brial, Claudiane M. Ouellet-Plamondon, Sébastien Fortin, Katy Tsesmelis, Marcelo Montini, Diego Rosani   +7 more
doaj   +1 more source

The Efficient Use of Sulfuric Acid in Bauxite Residue Leaching

Materials Proceedings, 2023
Bauxite residue (BR), an alkaline industrial waste, is a major byproduct of the alumina production process known as the Bayer process. The Bayer process generates a byproduct known as bauxite residue (red mud). This residue was leached with sulfuric acid
Aikaterini Toli, Dimitrios Kotsanis, Maria Psoma, Danai Marinos, Panagiotis Davris, Efthymios Balomenos, Dimitrios Panias   +6 more
doaj   +1 more source

Treatment of bauxite residues: Acidic leaching: First part

Vojnotehnički Glasnik, 2023
Introduction/purpose: Bauxite residue as a waste product from the aluminium industry produced through the Bayer process is mainly composed of iron oxide, titanium oxide, silicon oxide and undissolved alumina together with a wide range of other oxides and
Srećko R. Stopić, Vladimir Damjanović, Radislav Filipović, Mary D. Kamara, Bernd G. Friedrich   +4 more
doaj   +1 more source

Comparative kinetics study of different iron-containing pellets with hydrogen at isothermal conditions

Journal of Materials Research and Technology, 2023
Using hydrogen to produce iron is a promising way for the steel industry to achieve the goal of carbon neutrality. The reducibility of iron-bearing oxides by hydrogen significantly impacts the productivity and energy consumption during the reduction ...
Manish Kumar Kar, Mengyi Zhu, Jafar Safarian   +2 more
doaj   +1 more source

Exploration of Large-Scale Application of Efficient and Clean Utilization of Low-Grade Bauxite

Separations, 2023
In recent years, the rapid development of the domestic alumina industry has greatly accelerated the consumption of high-alumina–silica-ratio bauxite resources in China.
Yang Chen, Fei Long, Xuejiao Cao, Yibing Li, Weiguang Zhang, Tingan Zhang, Guozhi Lv   +6 more
doaj   +1 more source

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

Bauxite Residue Sinter Phase Transformations [PDF]

Proceedings of 5th International Slag Valorisation Symposium (5th ISVS 2017), 2017
We acknowledge the funding by Rio Tinto and from European Community's Horizon 2020 Programme ([H2020/2014–2019]) under Grant Agreement no. 636876 (MSCAETN REDMUD, http://www.etn.redmud.org), as well as Aluminium of Greece for the support of this project.
Hodge, Harrison, Tam, Pritii, Vaughan, James, Panias, Dimitrios   +3 more
openaire   +2 more sources

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