| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Electrode Technology for Aluminum Production
|
| Presentation Title |
Charcoal and Use of Green Binder for Use in Carbon Anodes in the Aluminium Industry |
| Author(s) |
Camilla Sommerseth, Ove Darell, Barte Øye, Anne Støre, Stein Rørvik |
| On-Site Speaker (Planned) |
Camilla Sommerseth |
| Abstract Scope |
Carbon anodes for aluminium production are made of calcined petroleum coke (CPC) and coal tar pitch (CTP). The CO2 produced upon anode consumption contributes to a substantial amount of the carbon footprint. Charcoal from wood is suggested to partly replace coke in anodes but has some highly undesirable properties: low electrical resistivity, high porosity, and high ash content. Siberian larch and spruce charcoal were produced by heat treatment to 800°C, 1200°C and 1400°C and acid-washed with H2SO4, resulting in decreasing impurity content and porosity. Pilot anodes were made from CTP, CPC and charcoal, some with CTP replaced by a green binder. A reference anode was produced with CTP and CPC. Electrochemical consumption of anodes containing green binder, larch and spruce were all higher compared to the reference anode. CO2 reactivity was higher for anodes containing spruce and green binder, but comparable to the reference for anodes containing larch. |
| Proceedings Inclusion? |
Planned: Light Metals |