Flash Smelting of Nickel Sulfide Concentrates
2011
Flash smelting oxidizes and melts pentlandite concentrates. The principal product is a molten Ni-Fe-S matte that is considerably richer in nickel (20%-60% Ni) than the concentrate feed (12%-20% Ni). This matte product is transferred to converting ( slag (with silica flux); and, (iii) removing the gangue rock in the concentrate by dissolving it in the molten slag. The main advantage of flash smelting over roasting/electric furnace melting is its small energy requirement, due to its efficient use of heat from the oxidation of sulfur and iron. The main disadvantage of flash smelting is the greater loss of nickel and other metals to slag-which almost always requires subsequent settling of matte from slag in a purpose-built electric settling furnace.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
3
References
4
Citations
NaN
KQI