Results 51 to 60 of about 695 (179)

High Temperature Treatment of Selected Iron Rich Bauxite Ores to Produce Calcium Aluminate Slags

Materials Proceedings, 2021
The Pedersen process is a method to produce alumina from Al-containing sources, and it is a more material-efficient method than the current commercial Bayer process, since the formation of bauxite residue (red mud) is avoided, and the bauxite can be ...
Adamantia Lazou, Casper van der Eijk, Michail Vafeias, Amalia Bempelou, Efthymios Balomenos, Leiv Kolbeinsen, Dimitrios Panias, Jafar Safarian   +7 more
doaj   +1 more source

Hydrogen in Treatment of Bauxite Residues

Metallurgical and Materials Data
This study explores pyrometallurgical and hydrometallurgical methods for decarbonizing and recovering valuable metals from bauxite residue, with direct hydrogen reduction in a rotary kiln without smelting and dissolution of solid residues under high pressure in an autoclave.
Srećko Stopić, Duško Kostić, Vladimir Damjanović, Radislav Filipovic, Nenad Nikolić, Mitar Perušić   +5 more
openaire   +1 more source

The Impact of Russia–Ukraine War in Maritime Data

The World Economy, EarlyView.
ABSTRACT This study analyses weekly port calls from 2019 to 2026 to evaluate the Russia–Ukraine war's impact on maritime trade. The data reveals clear structural shifts that Ukrainian traffic moved from high‐risk areas like Odesa to safer Danube River ports.
Daiki Sera, Kenmei Tsubota, Yujiro Wada
wiley   +1 more source

Kinetics Study on the Hydrogen Reduction of Bauxite Residue-Calcite Sintered Pellets at Elevated Temperature

Metals, 2023
In this study, the isothermal reduction of bauxite residue-calcite sintered pellets by hydrogen at elevated temperatures and different gas flow rates was investigated.
Manish Kumar Kar, Casper van der Eijk, Jafar Safarian   +2 more
doaj   +1 more source

A Generalized Predictive Model for Displacement Washing of Partially Reslurried Filter Cakes

Chemical Engineering &Technology, Volume 49, Issue 8, August 2026.
During displacement washing, partial reslurrying of the filter cake surface frequently occurs as an undesired side effect of wash liquid application, causing premature contamination of the wash liquid through mixing with cake impurities. This contamination can limit both washing efficiency and the achievable washing result.
Hendrik Simon Henn, Florian Sauer, Bernhard Hoffner   +2 more
wiley   +1 more source

Enhancing solidification in one-part geopolymer systems through alkali-thermal activation of bauxite residue and silica fume integration

Case Studies in Construction Materials
This work describes the synthesis of geopolymers, a family of amorphous alumino-silicates, employing Silica fume and bauxite waste as precursor materials in an alkali-activated polycondensation reaction and the investigation of their properties.
Harini Konduru, S Karthiyaini
doaj   +1 more source

Home Range and Habitat Selection of the Endangered Red Goshawk (Erythrotriorchis radiatus) Across Australia's Tropical Savannas

Ecology and Evolution, Volume 16, Issue 8, August 2026.
We used long‐term GPS tracking to quantify home‐range size and habitat selection of the endangered Red Goshawk across tropical savannas of northern Australia. Red Goshawks occupied extensive overall home ranges, with well‐defined core ranges centred on nest sites.
Christopher MacColl, Richard Seaton, Nicholas P. Leseberg, David A. Stewart, Stephen A. Murphy, James E. M. Watson   +5 more
wiley   +1 more source

Distribution of Selected Trace Elements in the Bayer Process

Metals, 2018
The aim of this work was to achieve an understanding of the distribution of selected bauxite trace elements (gallium (Ga), vanadium (V), arsenic (As), chromium (Cr), rare earth elements (REEs), scandium (Sc)) in the Bayer process.
Johannes Vind, Alexandra Alexandri, Vicky Vassiliadou, Dimitrios Panias   +3 more
doaj   +1 more source

Nordgren PINNs to VQE: Advancing Hydraulic Fracturing Simulations in Shale Reservoirs

International Journal for Numerical and Analytical Methods in Geomechanics, Volume 50, Issue 12, Page 4863-4878, 25 August 2026.
ABSTRACT This study advances hydraulic fracturing simulations in shale reservoirs using two computational paradigms, Physics‐Informed Neural Networks (PINNs) and the Variational Quantum Eigensolver (VQE). PINNs were employed to solve Nordgren's equation, which governs fracture width evolution, by embedding physical laws into the neural network ...
Dennis Delali Kwesi Wayo, Sonny Irawan, Mohd Zulkifli Bin Mohamad Noor, Mudasar Zafar, Shynar Juziyeva, Camila Martins Saporetti, Leonardo Goliatt, Randy Hazlett   +7 more
wiley   +1 more source

Exhumed eo‐Alpine High‐Pressure Rocks Fed Campanian Turbidites in Eastern Sardinia

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract This study investigates the detrital record of the early orogenic evolution of the Sardinia‐Calabria system, preserved in Upper Cretaceous arenites exposed in eastern Sardinia. Sardinia and Corsica form a continental block that includes a segment of the Alpine orogen and of its former foreland basin.
Francesco Massari, Maria Giuditta Fellin, Cristina Stefani, Eva Enkelmann, Iginio Dieni, Stefano Sanchetti   +5 more
wiley   +1 more source