FIELD: metallurgy.
SUBSTANCE: method involves pre-heating of nickel ore in a tubular rotary furnace and reduction smelting in the electric arc furnace. At the same time, the nickel ore is preheated with or without fluxing agents at temperature below 700 °C without obtaining liquid melts. Before reduction smelting, the nickel ore is melted with fluxing agents in a smelting furnace producing ore-flux melt, which is directed to reduction smelting in an electric arc furnace of alternating or direct current. Gases of the smelting and electric arc furnaces are used for heating the nickel ore.
EFFECT: reduced energy consumption for smelting of ferronickel out of oxidised nickel ores in the electric arc furnace.
2 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PROCESSING OXIDISED OF NICKEL ORES | 2015 |
|
RU2624880C2 |
| METHOD OF PYROMETALLURGICAL PROCESSING OF OXIDATED NICKEL ORE | 2018 |
|
RU2682197C1 |
| PROCESSING METHOD FOR OXIDIZED NICKEL ORE | 2023 |
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RU2808305C1 |
| METHOD FOR PYROMETALLURGICAL PROCESSING OF OXIDIZED NICKEL ORE | 2017 |
|
RU2639396C1 |
| METHOD OF PYROMETALLURGICAL PROCESSING OF OXIDISED NICKEL ORE TO OBTAIN FERRONICKEL IN A MELTING UNIT | 2018 |
|
RU2688000C1 |
| PROCEDURE FOR PROCESSING OXIDATED NICKEL ORE | 2009 |
|
RU2401873C1 |
| METHOD OF PROCESSING NICKEL-CONTAINING IRON ORE MATERIAL | 2004 |
|
RU2280704C1 |
| METHOD TO PROCESS METALLURGICAL RAW MATERIALS AND DEVICE FOR IMPLEMENTING SAME | 1993 |
|
RU2038385C1 |
| METHOD OF PROCESSING RAW MATERIALS CONTAINING NONFERROUS METALS AND IRON | 2000 |
|
RU2194781C2 |
| METHOD AND DEVICE TO PROCESS OXIDISED ORE MATERIALS CONTAINING IRON, NICKEL AND COBALT | 2011 |
|
RU2463368C2 |
