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| Keywords: Siemens's direct reduction continuous furnace.png Réduction directe inventé par Carl Wilhelm Siemens Le système de chauffe de ce four à réverbère est à gauche Le minerai mélangé au charbon est charge à droite Le laitier coule continuellement par un trou le métal est coulé à intervalles réguliers Carl Wilhelm Siemens The heating system of this open-hearth furnace is at the left The iron ore miwed with coal is loaded at the right The slag continuously runs by a hole the liquid steel is tapped from time to time 1890 https //archive org/details/metallurgyofstee00howerich The metallurgy of steel p 288 Henry Marion Howe 1848-1922 other versions PD-old-70-1923 Carl Wilhelm Siemens Direct reduction Images from The metallurgy of steel by H E Howe Uploaded with UploadWizard | ||||
