Advanced technology for iron-chrome alloys production and related plant
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United States of America Patent
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May 24, 2016
Grant Date -
Aug 27, 2015
app pub date -
Feb 25, 2014
filing date -
Jul 30, 2009
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Abstract
A method for producing ferro-chrome alloys comprising a stoichiometric charge and stoichiometric slag calculation step, a step of making the plant and the crucible furnace operate at normal regime, steps of casting the metal and the slag, a step of collecting the molten metal in suitable modular molds made from spheroidal graphite cast iron, a step of removing the ingots contained in the molds with suitable pincer means, a step of collecting the slag in suitable nonrefractory bells or ladles, characterized in that the metal-slag separation takes place directly inside the furnace and in that said castings of metal and slag take place in successive steps so as to allow the drawing off of the liquids in the amounts formed between one casting and the next.
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