Niquelândia ferronickel plant (Codemin)
Goiás, Brazil (Central-West ultramafic complexes), Brazil
Mine tailings and waste rock
- Type
- Mine tailings and waste rock
Rotary-kiln calcination near 900 °C (fly ash), electric-furnace reduction at 1600 °C (ferronickel and reduction slag), refining (white and black slags). Heavy nickel stays in the slag, ferronickel keeps the feed composition; fly ash is not fractionated either. Fly ash stored for decades in immersed ponds; slag dumps in direct contact with the soil. Indicative coordinates.
δ60Ni in ‰ (per mil) Values of the same system
Standard : NIST SRM 986
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.06 ± 0.07 ‰ | 0.01 / 0.2 ‰ | 9 | fly ash (settling ponds and electrostatic filter) Mean and standard deviation recalculated from 9 values. F1 to F9. | Ratié et al. (2016), Nickel isotope fractionation during laterite Ni ore smelting and ref… |
| 0.18 ± 0.06 ‰ | 0.11 / 0.27 ‰ | 5 | reduction slag (electric furnace) Mean and standard deviation recalculated from 5 values. SS1 to SS5, old and recent. | Ratié et al. (2016), Nickel isotope fractionation during laterite Ni ore smelting and ref… |
| 0.04 ± 0.05 ‰ | 1 | ferronickel FeNi1, 34 % Ni. | Ratié et al. (2016), Nickel isotope fractionation during laterite Ni ore smelting and ref… | |
| 1.72 ± 0.13 ‰ | 1.63 / 1.81 ‰ | 2 | filtered fly-ash pond water (0.2 µm) Mean and standard deviation recalculated from 2 values. Fly-ash pond waters (F_W_1 and F_W_2), 60 to 80 µg/L Ni: clearly heavier than the ash, light nickel staying in the solid. | Ratié et al. (2016), Nickel isotope fractionation during laterite Ni ore smelting and ref… |
Deposits of the same type
- Barro Alto ferronickel plant Brazil
- Vinto smelter slag Bolivia
- San José mine waste Bolivia
- Antamina experimental waste rock drainage Peru
- Hourcade metallurgical site slags France
- Viviez plant metallurgical tailings (Dunet and Igue de Mas heaps) France
- Black Angel mine tailings (Affarlikassaa fjord) Greenland
- Nikel smelter (Zapolyarny concentrate and slag) Russia
Cite this page
IsoFind Atlas (2026). Niquelândia ferronickel plant (Codemin), isotope signatures. https://www.isofind.tech/isotopes/en/sites/usine-de-ferronickel-de-niquelandia-codemin/ (accessed 2026-10-13).
@misc{isofind2026niquelandiaferronickelplantco,
title = {Niquelândia ferronickel plant (Codemin), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/usine-de-ferronickel-de-niquelandia-codemin/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13