Device and method for treating chromite to smelt ferrochrome through fluidized suspension roasting electric furnace
The invention relates to a device and a method for smelting ferrochrome by treating chromite through a fluidized suspension roasting electric furnace, and belongs to the technical field of metallurgy and mineral processing suspension fluidized roasting. The device comprises a fire coal combustion un...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention relates to a device and a method for smelting ferrochrome by treating chromite through a fluidized suspension roasting electric furnace, and belongs to the technical field of metallurgy and mineral processing suspension fluidized roasting. The device comprises a fire coal combustion unit, a crushing and feeding unit, a heating and preheating unit, a suspension roasting unit, a desulfurization, denitrification and dust removal unit, a returned material recovery unit and an electric furnace smelting unit. The method for smelting the ferrochrome comprises the following steps: providing reaction heat for the suspension roasting system and the electric furnace through coal-based combustion, heating and preheating ferrochrome ore in a suspension state, reducing the ferrochrome ore in a high-temperature environment by using a reducing agent coke, and efficiently recycling gas generated by heat storage reduction and product cooling gas. According to the method, secondary energy electricity is replaced b |
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