The　spontaneous　combustion　of　sulfide　ore　piles　poses　a　significant　threat　to　miners＇　health　and　mining　safety.　In　this　work,　numerical　simulations　of　the　temperature,　velocity,　and　concentration　field　during　the　self-heating　of　sulfide　ore　piles　were　conducted　using　COMSOL　Multiphysics.　A　self-heating　model　was　established　based　on　porous　media　fluid　dynamics　and　heat　transfer　theory.　The　simulation　parameters　were　determined,　and　the　numerical　solution　of　the　heat　conduction　equation　for　sulfide　ores　was　obtained.　The　results　indicate　a　three-stage　temperature　progression:　slow　oxidation　(0–10　days,　with　temperatures　below　335　K),　rapid　heating　(10–16　days,　with　a　peak　temperature　of　926　K),　and　gradual　cooling　(16–24　days).　The　stacking　method　significantly　influences　the　self-heating　temperature　field.　Larger　cross-sectional　areas,　stack　heights,　and　stack　angles　of　ore　piles　lead　to　higher　temperatures　and　shorter　safe　stacking　times.　Furthermore,　the　lower　the　porosity　and　the　slower　the　ambient　wind　velocity,　the　greater　the　risk　of　spontaneous　combustion　in　a　stockpile　due　to　heat　accumulation.　This　work　can　provide　a　predictive　framework　for　optimizing　ore　pile　geometry　and　ventilation　strategies,　offering　practical　insights　to　mitigate　spontaneous　combustion　risks　in　mining　operations.　©　2025　The　Institution　of　Chemical　Engineers