About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
2020 Technical Division Student Poster Contest
|
Presentation Title |
SPG-4: Microwave Drying of a Nickel Laterite Ore |
Author(s) |
Wei Lv, Xuewei Lv, Yindong Yang, Alexander McLean, Mansoor Barati |
On-Site Speaker (Planned) |
Wei Lv |
Abstract Scope |
The microwave drying of a nickel laterite was investigated to assess its potential as an alternative for drying of laterite ores prior to further pyrometallurgical processing. The water content of the raw ore used in this study (35.11%) is present as both free water (28.35%) and hydroxylated minerals (6.76%); the principle water-bearing minerals are goethite FeO·OH and lizardite Mg3Si2O5(OH)4. The effect of sample thickness and power on the specific energy consumption and effective diffusivity were assessed. The effective diffusivity increases with increasing thickness of the nickel laterite and with increasing power. The removal of crystalline water is much more energy intensive than the removal of free water. The inferred temperatures of the sample during the drying process are obtained by combining with the TG-DSC data and the mass loss curves during the microwave drying process. The energy consumption of drying nickel laterite by microwaves and a rotary kiln is compared. |
Proceedings Inclusion? |
Undecided |