| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ni-Co 2021: The 5th International Symposium on Nickel and Cobalt
|
| Presentation Title |
Alkaline Leaching of Nickel from Electric Arc Furnace Dust Using Ammonia-ammonium Glutamate as Lixiviant |
| Author(s) |
Erik Prasetyo |
| On-Site Speaker (Planned) |
Erik Prasetyo |
| Abstract Scope |
Electric arc furnace dust (EAFD) is a potential secondary source of nickel (Ni). Although Ni content (0.5%) is much lower than traditional ore i.e. laterites, EAFD as raw material has advantage in terms of straightforward processing. It was demonstrated that Ni could directly recovered from EAFD by leaching using glutamate in alkaline condition. In this study, ammonia-ammonium glutamate system as lixiviant would be tested for Ni recovery in terms of kinetic under different leaching parameters, which include stirring speed, oxidant concentration (H2O2), ammonia concentration, glutamic acid concentration and temperature. The results demonstrated that stirring speed had negative effect on Ni rate dissolution. Addition of H2O2 substantially increased the rate since the addition imparted oxidative condition, which was favorable for Ni dissolution. Kinetic modelling using several models indicated the dissolution process was affected by interface transfer and diffusion. Calculated activation energy indicated the effect of temperature on Ni leaching was minimal. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Hydrometallurgy, Copper / Nickel / Cobalt, Recycling and Secondary Recovery |