XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 3737
CONCLUSION
Industrial scale SAG mill modelling work presented in
this paper was using ANSYS Rocky’s newly developed
coupled SPH-DEM technique. The newly implemented
SPH-DEM technique captured the charge dynamics inside
the mill. It also captured the slurry flow through the grate
apertures into the pulp lifters and discharge quite well, that
compared with previews work. The modelling showed good
agreement with industrially measured data. This work also
demonstrated that the new implementation of IISPH is
running much faster with increased fidelity compared to
the traditional WCSPH. It also showed that this technique
is capable of capturing complex flow structures present in
SAG mills and discharge through its grates and pulp lifters.
This showed that this tool is suitable in reviewing industrial
scale grinding mills internal design which generates very
complex flow structures.
REFERENCES
Ihmsen M., Cornelis J., Solenthaler B., Horvath C.,
Teschner M. 2013. Implicit incompressible SPH. IEEE
Transactions on Visualization and Computer Graphics 19.
Mitchell, D. (2015). Improved relationships for discharge
in SAG/AG mills (Master’s thesis), The University of
Queensland, Australia. doi: 10.14264/uql.2015.941.
Monaghan, J.J., Simulating Free Surface Flows with SPH,
Journal of Computational Physics, Volume 110, Issue 2,
pp 399–406, Feb. 1994.
Potapov, A.V., Hunt, M.L., and Campbell, C.S., Liquid–
solid flows using smoothed article hydrodynamics and
the discrete element method, Powder Technology 116,
pp 204–213, 2001.
Rocky SPH technical manual, Version 2023 R1, 2023.
Vijayakumar, N (2015). Development of an AG/SAG
mill batch test methodology (Master’s thesis), The
University of Queensland, Australia.
Weerasekara, N. S. &Town, S., (2019). Optimising pulp
lifter design using SPH Simulation: Tritton story,
In: Proc. SAG 2019, 57, 22–26th September 2019,
Vancouver, Canada.
Weerasekara, N. S., Hanhiniemi, J., Rivett, T., Heo, J.,
Erepan, P., Barrow, J., &Hayes, S. (2022). SPH mod-
elling based SAG mill pulp lifter design improvement
at Tritton mine and its performance on grinding cir-
cuit, IMPC Asia-Pacific 2022, Melbourne, Australia.
Weerasekara, N. S., Hanhiniemi, J., Bharadwaj, R., Potapov,
A., &Daroz, V. (2023). SPH-DEM techniques to
solve complex flow structures in AG/SAG mills due
to slurry and rock particle flows, Comminution ‘23,
17–20 April 2023, Cape Town, South Africa.
Figure 8. Mill power against number of mill revolutions
CONCLUSION
Industrial scale SAG mill modelling work presented in
this paper was using ANSYS Rocky’s newly developed
coupled SPH-DEM technique. The newly implemented
SPH-DEM technique captured the charge dynamics inside
the mill. It also captured the slurry flow through the grate
apertures into the pulp lifters and discharge quite well, that
compared with previews work. The modelling showed good
agreement with industrially measured data. This work also
demonstrated that the new implementation of IISPH is
running much faster with increased fidelity compared to
the traditional WCSPH. It also showed that this technique
is capable of capturing complex flow structures present in
SAG mills and discharge through its grates and pulp lifters.
This showed that this tool is suitable in reviewing industrial
scale grinding mills internal design which generates very
complex flow structures.
REFERENCES
Ihmsen M., Cornelis J., Solenthaler B., Horvath C.,
Teschner M. 2013. Implicit incompressible SPH. IEEE
Transactions on Visualization and Computer Graphics 19.
Mitchell, D. (2015). Improved relationships for discharge
in SAG/AG mills (Master’s thesis), The University of
Queensland, Australia. doi: 10.14264/uql.2015.941.
Monaghan, J.J., Simulating Free Surface Flows with SPH,
Journal of Computational Physics, Volume 110, Issue 2,
pp 399–406, Feb. 1994.
Potapov, A.V., Hunt, M.L., and Campbell, C.S., Liquid–
solid flows using smoothed article hydrodynamics and
the discrete element method, Powder Technology 116,
pp 204–213, 2001.
Rocky SPH technical manual, Version 2023 R1, 2023.
Vijayakumar, N (2015). Development of an AG/SAG
mill batch test methodology (Master’s thesis), The
University of Queensland, Australia.
Weerasekara, N. S. &Town, S., (2019). Optimising pulp
lifter design using SPH Simulation: Tritton story,
In: Proc. SAG 2019, 57, 22–26th September 2019,
Vancouver, Canada.
Weerasekara, N. S., Hanhiniemi, J., Rivett, T., Heo, J.,
Erepan, P., Barrow, J., &Hayes, S. (2022). SPH mod-
elling based SAG mill pulp lifter design improvement
at Tritton mine and its performance on grinding cir-
cuit, IMPC Asia-Pacific 2022, Melbourne, Australia.
Weerasekara, N. S., Hanhiniemi, J., Bharadwaj, R., Potapov,
A., &Daroz, V. (2023). SPH-DEM techniques to
solve complex flow structures in AG/SAG mills due
to slurry and rock particle flows, Comminution ‘23,
17–20 April 2023, Cape Town, South Africa.
Figure 8. Mill power against number of mill revolutions