TY - GEN
T1 - Investigation into the rheological characteristics of aerated Flyash powder
AU - Chen, Wei
AU - Williams, Kenneth C.
AU - Jones, Mark G.
AU - Bunn, Thomas F.
PY - 2013
Y1 - 2013
N2 - Although numerous studies have been conducted to obtain rheological behaviour of the aerated granular material, the rheology of fine powder materials (10 μm50< 100 μm) remain poorly understood. To improve the understanding of aerated fine powder rheological behaviours, this research has focussed on experimentally determining rheological properties using a modified rotary viscometer. The modified device comprises a fluidisation vessel and a common rotary viscometer (based on circular Couette flow). Flyash powder was selected as testing material. Experimental results indicate that the aerated Flyash can be characterised as a Yield Power-law fluid or a Power-law fluid, depending on the aeration level. Consequently, this research provides a significant increase in the understanding of rheological behaviours within fine air-powder mixtures.
AB - Although numerous studies have been conducted to obtain rheological behaviour of the aerated granular material, the rheology of fine powder materials (10 μm50< 100 μm) remain poorly understood. To improve the understanding of aerated fine powder rheological behaviours, this research has focussed on experimentally determining rheological properties using a modified rotary viscometer. The modified device comprises a fluidisation vessel and a common rotary viscometer (based on circular Couette flow). Flyash powder was selected as testing material. Experimental results indicate that the aerated Flyash can be characterised as a Yield Power-law fluid or a Power-law fluid, depending on the aeration level. Consequently, this research provides a significant increase in the understanding of rheological behaviours within fine air-powder mixtures.
KW - Aeration and rotary viscometer
KW - Fine powder
KW - Rheology
UR - http://www.scopus.com/inward/record.url?scp=84890052379&partnerID=8YFLogxK
M3 - Conference Proceeding
AN - SCOPUS:84890052379
SN - 9780858259836
T3 - ICBMH 2013 - 11th International Conference on Bulk Materials Storage, Handling and Transportation
BT - ICBMH 2013 - 11th International Conference on Bulk Materials Storage, Handling and Transportation
T2 - 11th International Conference on Bulk Materials Storage, Handling and Transportation, ICBMH 2013
Y2 - 2 July 2013 through 4 July 2013
ER -