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C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
C21C5/04—Manufacture of hearth-furnace steel, e.g. Siemens-Martin steel
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FR618661D1926-07-071926-07-07Procédé pour protéger les métaux contre l'oxydation et empêcher l'absorption degaz pendant la fusion et l'affinage
ExpiredFR618661A
(fr)
Procédé pour obtenir l'agglomération des minerais de zinc dans les fours de supergrillage et pour éviter les effets nuisibles des gaz produits par cette opération