| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
11th International Symposium on High Temperature Metallurgical Processing
|
| Presentation Title |
Production of a Cobalt-Nickel-Iron Alloy from Low Grade Ore |
| Author(s) |
Yotamu Hara, Shadreck Chama, Stephen Parirenyatwa, Kennedy Chikontwe, Douglas Mazwi Musowoya, Haggai Simfukwe, Choolwe Muchindu, Golden Kaluba |
| On-Site Speaker (Planned) |
Yotamu Hara |
| Abstract Scope |
A novel way of producing a cobalt–nickel–iron alloy containing 55% Co, 9% Ni and 36% Fe from an oxide ore with 1.8% copper, 0.26% cobalt, 2.8% iron and 0.08% nickel has been established. The ore is initially treated hydrometallurgically via leaching and precipitation steps to upgrade copper, cobalt, iron and nickel as a bulk sulphide concentrate. Precipitation is carefully carried out to lower down iron in the bulk sulphide concentrates. The sulphide concentrate is smelted at 1220 degrees celcius to produce blister copper and slag containing 11% Co, 1.8% Ni and 7.2% Fe. The effects of basic and acidic fluxes in promoting good metal / slag separation were studied. The slag is then smelted under reducing environment at 1400 degrees celcius to yield cobalt – nickel – iron alloy. There is broad agreement between thermodynamic prediction and experimental results. The alloy was characterised using scanning electron microscopy (SEM) technique. |
| Proceedings Inclusion? |
Planned: |