Fabian Imanasa Azof

 

Alumina Production

The metallography characterization, chemical reactions, and leaching mechanism of calcium aluminate-slags for alumina production are investigated. The slags are produced from the smelting reduction of bauxite ore. This project employs pyro-hydrometallurgical technique, as known as Pedersen process that yields pure alumina and saleable by-product, i.e. pig iron and grey mud. It is worth to note, this process do not yield high alkaline and low utilized by-product; red mud.

The red mud has been a problem since the renowned Bayer process is practiced by over 95 % of world’s commercial production of alumina to date. Iron oxide constitutes the major compound (~ 60 wt.%) of red mud slurry, which is insoluble during digestion of bauxite in Bayer process. On dry basis, the production amount of red mud is as same as alumina, which was 120 million tons per year in 2015. Consequently, the storage size and secure location are very well concerned. Therefore, this project is believed will benefit region that has huge reserves of bauxite ore with high-iron content, i.e. central Europe.

Supervisor: Jafar Safarian (NTNU)

Contact: fabian.i.azof@ntnu.no 

 

Students at Metal Production

 

Post Doctorial
 

Sebastien Letout, RD1
Modelling Metallurgical Production Process
 

Heiko Gaertner, RD4
PAH Standardization

 

 

PhD
 

Pyunghwa Kim, RD2
Reduction Mechanisms in the SiMn Process
 

Massoud Hassanabadi, RD3
Ceramic Foam Filters Used in Molten Al Filtration

Erlend Lunnan Bjørnstad, RD3
Si Refining

 

Håkon Olsen, RD4
Dust Formation and Clustering

 

 

Associated PhD

Rune Stana
Titanium Slag
 

Karin Fjeldstad Jusnes
Quartz
 

Caoimhe Rooney
Modelling
 

Raghed Saadieh
FeSi

 


 

Kai Erik Ekstrøm, RD3
Recycling and Refining of Metallurgical
Waste Streams

 

 

 

 

 

 

Sethulaksmy Jayakumari, RD2
SiC Formation in Silicon Processes
 

Nicholas Smith, RD3
Effect of Minor Elements on Al Oxidation
 

Daniel Clos, RD4
Scaling in Al off-gas Channels/heat Exchangers
 

Romain Billy, RD5
Material Flow of Al


 

 

Hamideh Kaffash
Manganese

 

Mads Fromreide
Modelling
 

Fabian Imanasa Azof
Alumina Production
 

Benedicte Hovd
Charcoal for Manganese Production