Thermite welding of railways rails : Heat balance

Heat balance
Thermite welding of railways rails

Author : Raymond DEROCHE

Review date: February 13, 2026 | Lire en français

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3. Heat balance

Let the reaction be :

3 FeO + 2 AI = 3 Fe + {AI}_{2} O_{3}

The free energy of this reaction at temperature T is :

Δ G^{0} = - 402 400 + 77,52 \times T {par mole d'O}_{2}

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Heat balance

(1) - BENARD (J.) - Oxydation des métaux. - Tome 1 (1962).
(2) - LEVENSPIEL (O.) - Chemical reaction engineering. - Illinois Institute of Technology, Dpt. of Chemical Engineering (1965).

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