Patent ID: 9347108
Filing Date: 2016-05-24
CPC Classification: B22D,C21B,C21C,C22C,F27B,F27D,Y02P,Y02W

Claim Text:
1. Method for producing ferro-chrome alloys comprising a stoichiometric charge and a stoichiometric slag calculation step, a step of making a plant and a crucible furnace to operate, steps of casting of metal and slag, a step of collecting molten metal in modular molds made from spheroidal graphite cast iron, a step of removing ingots contained in modular molds using pincer means, a step of collecting the slag in non-refractory bells or ladles, wherein metal-slag separation takes place directly inside said furnace and wherein said castings of metal and slag take place in successive steps so as to allow tapping in an amount formed between one casting and the next; and wherein said slag is made up of: Cr SiO Al MgO in a concentration of between 34.0-36.0% of slag volume, CaO in a concentration of between 1.0-2.0% of slag volume, FeO in a concentration of between 0.6-0.8% of slag volume.