Aluminothermic reaction
（重定向自Aluminothermy）
![An aluminothermic reaction using iron(III) oxide. The sparks flying outwards are globules of molten iron trailing smoke in their wake.](/Images/godic/202412/20/ThermiteReaction4100.jpg")
![rail track welding by thermite](/Images/godic/202412/20/Velp-thermitewelding-14100.jpg")
![Thermit (Al und Fe2O3)](/Images/godic/202412/20/ThermiteFe2O34100.JPG")
![Réaction aluminothermique sur une pièce en fer](/Images/godic/202412/20/Thermite_skillet4100.jpg")
Aluminothermic reactions are exothermic chemical reactions using aluminium as the reducing agent at high temperature. The process is industrially useful for production of alloys of iron. The most prominent example is the thermite reaction between aluminium and iron oxides: