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ACIERvrai ou fauxL'élaboration de l'acier peut se faire dans trois types de fours, des fours à sols, des convertisseurs à oxygène, des fours à arcs. Dans les fours à oxygènes, l'air ou l'oxygène va être injecté dans le métal en fusion, ou alors on va utiliser des fours à arcs qui eux sont alimentés par de la ferraille ou par des boulettes de fer spongieux
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