Publications

Safe use of hydrogen for lab and pilot scale

The purpose of this document is to supply necessary information for safe handlingof hydrogen for lab and pilot scale applications of HARARE project. Whenhydrogen is oxidized with oxygen, the only by-product is water vapor, making itan ideal energy carrier and oxidizing agent for a green environmentally friendlyand sustainable economy. Hydrogen is however commonly viewed as […]

Published student work!

Published student work! Olivia Bogen Skibelid, Frida Vollan and Sander Ose Velle have published their work on extracting minerals from Red Mud (Bauxite Residue) in Materials. Materials is a peer-reviewed, open access journal of materials science and engineering. Congratulations! Meet the students here: Students extracting metals from Red Mud Download their paper: Bauxite Residue Agglomerate at Elevated […]

Bauxite Residue Agglomerate at Elevated Temperatures for Iron and Alumina Recovery

Bauxite Residue Agglomerate at Elevated Temperatures for Iron and Alumina Recovery The hydrogen reduction of bauxite residue lime pellets at elevated temperatures was carried out to recover iron and alumina from the bauxite residue in a new process route. Prior to the H2 reduction, oxide pellets were initially prepared via the mixing of an industrial […]

Climate-friendly metal production – why is it difficult?

Climate-friendly metal production – why is it difficult? Most people know that metals are made from ore, but how do we make gold from gravel? That’s the process we must understand to be able to make the metal industry climate friendly. Here are some alternatives for CO2-free metal production. Read this article if you want […]

Hydrogen reduction of bauxite residue and selective metal recovery

Hydrogen reduction of bauxite residue and selective metal recovery Ganesh Pilla, Stergi V. Kapelari, Tobias Hertel, Bart Blanpain, Yiannis PontikesDepartment of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44, 3001 Leuven, Belgium Abstract: Bauxite residue (BR) is an industrial by-product generated during the production of alumina from bauxite ores in the Bayer process. BR is environmentally […]

Recovery of Copper, Iron, and Alumina from Metallurgical Waste by Use of Hydrogen

Recovery of Copper, Iron, and Alumina from Metallurgical Waste by Use of Hydrogen Abstract: Substituting carbon with hydrogen is one of the few ways metal production can potentially become free of CO2 emissions. Moreover, the metallurgical industry produces significant amounts of waste. The present work presents a circular concept that will be pursued in the HARARE […]

Hydrogen as reductant – What does that mean?

Hydrogen as reductant – What does that mean?   Metals exist in the earth’s crust mainly as oxides. It means that every metal atom is attached to one or more oxygen atoms. They form very strong bound, like a marriage. To break these bounds, we need a reductant to steal the oxygen atoms from the metal atoms. Normally carbon is used […]

Let’s talk about Red Mud (Bauxite Residue)

Let’s talk about Red Mud (Bauxite Residue) Global annual production of red mud (bauxite residue) is about 150 million tonnes. It contains raw materials for the production of iron, silicon and aluminium, and is dumped as waste in spite of the availability of recycling technologies. This is because it is cheaper to dump bauxite residue as […]