|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||REWAS 2022: Decarbonizing the Materials Industry
||Tecno-economic Pre-feasibility Study of a Hydrogen Plasma Based Ferromanganese Plant
||Halvor Dalaker, Nils Henrik Eldrup, Roar Jensen, Rannveig Kvande
|On-Site Speaker (Planned)
Hydrogen is a candidate to replace carbon in metal production, as it can reduce some metal ores (e.g. iron ore);
MeO<sub>x</sub> + XH<sub>2(g)</sub> = Me + XH<sub>2</sub>O(g).
However, many metals, like manganese (Mn), cannot easily be reduced by H<sub>2</sub>(g) since very high activation energies are required to break the metal-oxide bond. By using hydrogen in the plasma state rather than the gas-phase, the reactivity of the hydrogen species increase significantly. For example, reduction of manganese by monoatomic hydrogen is thermodynamically favourable:
MnO + 2H = Mn + H<sub>2</sub>O
A prerequisite for the introduction of hydrogen plasma in metal production is a good financial case. In this work we present a scheme for a possible industrial scale ferromanganese plant based on hydrogen plasma reduction. Through mass and energy balances we demonstrate that such a plant can be economically competitive with current industrial state of the art.
||Extraction and Processing, Other, Other