Process and device for melting laterite-nickel ore in oxygen-enriched reinforcement melting pool to obtain ferronickel
The invention relates to a process and a device for melting laterite-nickel ore in an oxygen-enriched reinforcement melting pool to obtain ferronickel. According to the process, the laterite-nickel ore is dried first; the dried laterite-nickel ore, a solvent and conny are subjected to burdening; the...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention relates to a process and a device for melting laterite-nickel ore in an oxygen-enriched reinforcement melting pool to obtain ferronickel. According to the process, the laterite-nickel ore is dried first; the dried laterite-nickel ore, a solvent and conny are subjected to burdening; the materials subjected to burdening are added into a melting pool melting furnace for melting, and oxygen-enriched air with the oxygen content of 85%-99% at the temperature between 600 DEG C and 800 DEG C is blown into melt in the furnace; the melt output from the melting pool melting furnace flows into a melting pool reduction furnace, a reducing agent is added, oxygen-enriched air with the oxygen content of 60%-85% at the temperature between 600 DEG C and 800 DEG C is blown into the melt in the furnace, the coefficient of excess of the oxygen-enriched air to the reducing agent is controlled between 0.4 and 0.5, and slag and a ferronickel alloy containing 15-30% of nickel are generated through a reaction of the melt |
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