| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2025 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-6: Study of Thermodynamic for Effective Ni Extraction From Nickel Pig Iron (NPI) via Carbonyl Process |
| Author(s) |
Seoung Uk Bae, Namhun Kwon, Dong Hyun Kim, JaeJin Sim, Kyoung-Tae Park, Jae Hong Shin |
| On-Site Speaker (Planned) |
Seoung Uk Bae |
| Abstract Scope |
Nickel is essential for cathode materials in secondary batteries, driving its demand in medium and large battery markets amidst the transition to electric vehicles and renewable energy. This study investigates nickel extraction from Nickel Pig Iron (NPI) via the carbonyl process using thermodynamic analysis with Factsage 8.2 software. NiO(s) and Fe2O3(s) in NPI are reduced to Ni(s) and Fe(s) through hydrogen reduction, enabling subsequent carbonylation reactions: 1) Ni(s) + 4CO(g) = Ni(CO)4(g), 2) Fe(s) + 5CO(g) = Fe(CO)5(g). These reactions are influenced by temperature and pressure, enabling reversible reactions through controlling parameters. Since both nickel and iron form carbonyls, fractional distillation is employed to separate Ni(CO)4 and Fe(CO)5 base on difference of boiling points between Ni(CO)4 and Fe(CO)5. Secondary purification further enhances nickel purity. This study confirms the feasibility of nickel extraction via the carbonyl process, offering a sustainable and efficient method for processing NPI and recovering valuable metals. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Extraction and Processing, Pyrometallurgy, Phase Transformations |