🧲 Magnetizing Roast of Hematite: 2D Grain Cross-Section and Gas Equilibrium Lab

2D companion of Magnetic Jet of Hematite: a shrinking-core model of a hematite grain roasted in CO and CO2 gas, with Baur-Glaessner gas equilibria, chemical and diffusion kinetics, wustite over-reduction and a magnetic recovery estimate. Change temperature, gas and grain size.