METHOD AND SYSTEM FOR PRODUCING LOW CARBON FERROCHROME FROM CHROMITE ORE AND LOW CARBON FERROCHROME PRODUCED THEREBY
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United States of America Patent
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Oct 17, 2024
app pub date -
Jun 27, 2024
filing date -
Jun 27, 2024
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Abstract
A method and system for recovering low carbon ferrochrome from feed materials including chromite ore and aluminum granules in a chamber of an arc furnace using an aluminothermic smelting process carried out in the presence of an inert gas, e.g., Argon. The aluminothermic smelting process produces a bath of molten low carbon ferrochrome metal with molten slag floating thereon in the chamber. The molten low carbon ferrochrome metal and molten slag are extracted individually and processed to provide a solidified low carbon ferrochrome metal product and a solidified slag particles product, respectively. A method for the recirculation, recovery and reuse of the inert gas, and a system for accomplishing the recirculation, recovery and reuse of the inert gas.
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