XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 3873
Regarding the PSDs of the different sampling points
most of the observed results are reasonable. During dry
milling the product is showing comprehensible reactions,
the higher the milling pressure and table speed the finer the
product. The screening products shown ambiguous trends
in dependence of the milling parameters. That’s reasonable
because the screening performance is mainly related to the
set throughput as long as its feed PSD is relatively the same.
Unfortunately, the results revealed also some errors which
have to concerned intensively in the future. Possible solu-
tions are normalized calculations in dependence the feed
materials PSD such as specific surface energy or specific size
energy.
Nevertheless, the presented tests and their results show-
ing that wet grinding with a vertical roller mill is possible.
These tests represent only the first part of a more compre-
hensive test series, especially for the wet milling. In addition,
for the dry milling not all reasonable parameter variations
have been tested so far. It is also planned to conduct tests
with higher mill throughputs. Beside the changing of the
mill parameters, changing the feed moisture is intended for
the wet milling tests.
REFERENCES
Altun, D., Gerold, C., Benzer, H., Altun, O. and
Aydogan, N., Copper ore grinding in a mobile ver-
tical roller mill pilot plant. International Journal of
Mineral Processing, 2015, 136, 32–36. doi:10.1016/j.
minpro.2014.10.002.
Ballantyne, G.R. and Lane, G., Comparison of dry VRM
or HPGR circuits to wet milling circuits. In IMPC
Asia-Pacific 2022, Melbourne. 22.08.2022, 2022,
pp. 93–99.
Bätz, A., Keyßner, M. and Meyer, U., Wälzmühle:
Patentschrift, B02C 23/10 B02C 15/04, 2005.
Energy Transitions Commission (ed.), Material and
Resource Requirements for the Energy Transition, 1st
edn., The Barriers to Clean Electrification Series, 2023.
Gagnon, C., Rosa, A., Makni, S., McIvor, R., Klein, B.,
Kumar, A., Fisher, W., Gong, D. and Saud, C.,
Replacement of Wet Ball Milling with High-Pressure
Grinding Ahead of Mineral Seperation. Corem
University of British Columbia, 2021, 9 pp.
Gleeson, D., OZ Minerals, Loesche team up following
West Musgrave vertical roller mill test work, 2020
https://im-mining.com/2020/06/25/oz-minerals
-loesche-team-following-west-musgrave-vertical-roller
-mill-test-work/.
Harder, J., Trends in the mining industry -
Aufbereitungstechnik, 2022 https://www.at-minerals
.com/de/artikel/at_Trends_in_the_mining
_industry_3596020.html.
International Energy Agency, The Role of Critical Minerals
in Clean Energy Transitions: World Energy Outlook
Special Report, 2021.
Krausmann, F., Gringrich, S., Eisenmenger, N., Erb, K.-H.,
Haberl, H. and Fischer-Kowalski, M., Growth in
global meaterial use: GDP and population during the
20th century. Ecological Economics, 2009, 68 (10),
2696–2705.
Lebioda, S., Werkzeuge für das Studium: Verteilungsnetze.
RRSB https://www.hs-merseburg.de/lebioda/.
Leonida, C., Mining to Energy Efficiency and Beyond, 2020
https://www.e-mj.com/features/mining-to-energy
-efficiency-and-beyond/.
Lieberwirth, H., DFG -GEPRIS -Mahlkreislaufversuchs-
stand mit Wälzmühle, 2023 https://gepris.dfg.de
/gepris/projekt/361116310?context=projekt&task
=showDetail&id=361116310&.
Marques, M. and Donda, J., Comminution Process for
Iron Ore or Iron Ore Products at Natural Humidity:
European Patent Application, C22B 1/00, 2019.
McKinsey &Company, Bridging the copper supply gap,
2023.
Meyer, U., Felipe, C., Smit, J.T. and Vilijoen, R.M.,
Verfahren zur Zerkleinerung von Material, insbeson-
dere Erzen, und Wälzmühle zur Durchführung des
Verfahrens: Offenlegungsschrift, B02C 15/04, 1992.
Mudd, G.M., Weng, Z. and Jowitt, S.M., A Detailed
Assessment of Global Cu Resource Trends and
Endowments. Economic Geology, 2013 (108),
1163–1183.
Norgate, T. and Jahanshahi, S., Reducing the greenhouse
gas footprint of primary metal production: Where
should the focus be? Minerals Engineering, 2011, 24
(14), 1563–1570. doi:10.1016/j.mineng.2011.08.007.
Ogilvie, Y., OZ Minerals (WKN: A0Q657) gibt grünes
Licht für die Erschließung von Projekt West Musgrave
in Westaustralien. The Market Herald, 2022 https://
themarketherald.de/oz-minerals-wkn-a0q657-gibt
-gruenes-licht-fuer-die-erschliessung-von-projekt
-west-musgrave-in-westaustralien-2022-09-23/.
Ogonowski, S., Wołosiewicz-Głąb, M., Ogonowski, Z.,
Foszcz, D. and Pawełczyk, M., Comparison of Wet
and Dry Grinding in Electromagnetic Mill. Minerals,
2018, 8 (4), 138. doi:10.3390/min8040138.
Regarding the PSDs of the different sampling points
most of the observed results are reasonable. During dry
milling the product is showing comprehensible reactions,
the higher the milling pressure and table speed the finer the
product. The screening products shown ambiguous trends
in dependence of the milling parameters. That’s reasonable
because the screening performance is mainly related to the
set throughput as long as its feed PSD is relatively the same.
Unfortunately, the results revealed also some errors which
have to concerned intensively in the future. Possible solu-
tions are normalized calculations in dependence the feed
materials PSD such as specific surface energy or specific size
energy.
Nevertheless, the presented tests and their results show-
ing that wet grinding with a vertical roller mill is possible.
These tests represent only the first part of a more compre-
hensive test series, especially for the wet milling. In addition,
for the dry milling not all reasonable parameter variations
have been tested so far. It is also planned to conduct tests
with higher mill throughputs. Beside the changing of the
mill parameters, changing the feed moisture is intended for
the wet milling tests.
REFERENCES
Altun, D., Gerold, C., Benzer, H., Altun, O. and
Aydogan, N., Copper ore grinding in a mobile ver-
tical roller mill pilot plant. International Journal of
Mineral Processing, 2015, 136, 32–36. doi:10.1016/j.
minpro.2014.10.002.
Ballantyne, G.R. and Lane, G., Comparison of dry VRM
or HPGR circuits to wet milling circuits. In IMPC
Asia-Pacific 2022, Melbourne. 22.08.2022, 2022,
pp. 93–99.
Bätz, A., Keyßner, M. and Meyer, U., Wälzmühle:
Patentschrift, B02C 23/10 B02C 15/04, 2005.
Energy Transitions Commission (ed.), Material and
Resource Requirements for the Energy Transition, 1st
edn., The Barriers to Clean Electrification Series, 2023.
Gagnon, C., Rosa, A., Makni, S., McIvor, R., Klein, B.,
Kumar, A., Fisher, W., Gong, D. and Saud, C.,
Replacement of Wet Ball Milling with High-Pressure
Grinding Ahead of Mineral Seperation. Corem
University of British Columbia, 2021, 9 pp.
Gleeson, D., OZ Minerals, Loesche team up following
West Musgrave vertical roller mill test work, 2020
https://im-mining.com/2020/06/25/oz-minerals
-loesche-team-following-west-musgrave-vertical-roller
-mill-test-work/.
Harder, J., Trends in the mining industry -
Aufbereitungstechnik, 2022 https://www.at-minerals
.com/de/artikel/at_Trends_in_the_mining
_industry_3596020.html.
International Energy Agency, The Role of Critical Minerals
in Clean Energy Transitions: World Energy Outlook
Special Report, 2021.
Krausmann, F., Gringrich, S., Eisenmenger, N., Erb, K.-H.,
Haberl, H. and Fischer-Kowalski, M., Growth in
global meaterial use: GDP and population during the
20th century. Ecological Economics, 2009, 68 (10),
2696–2705.
Lebioda, S., Werkzeuge für das Studium: Verteilungsnetze.
RRSB https://www.hs-merseburg.de/lebioda/.
Leonida, C., Mining to Energy Efficiency and Beyond, 2020
https://www.e-mj.com/features/mining-to-energy
-efficiency-and-beyond/.
Lieberwirth, H., DFG -GEPRIS -Mahlkreislaufversuchs-
stand mit Wälzmühle, 2023 https://gepris.dfg.de
/gepris/projekt/361116310?context=projekt&task
=showDetail&id=361116310&.
Marques, M. and Donda, J., Comminution Process for
Iron Ore or Iron Ore Products at Natural Humidity:
European Patent Application, C22B 1/00, 2019.
McKinsey &Company, Bridging the copper supply gap,
2023.
Meyer, U., Felipe, C., Smit, J.T. and Vilijoen, R.M.,
Verfahren zur Zerkleinerung von Material, insbeson-
dere Erzen, und Wälzmühle zur Durchführung des
Verfahrens: Offenlegungsschrift, B02C 15/04, 1992.
Mudd, G.M., Weng, Z. and Jowitt, S.M., A Detailed
Assessment of Global Cu Resource Trends and
Endowments. Economic Geology, 2013 (108),
1163–1183.
Norgate, T. and Jahanshahi, S., Reducing the greenhouse
gas footprint of primary metal production: Where
should the focus be? Minerals Engineering, 2011, 24
(14), 1563–1570. doi:10.1016/j.mineng.2011.08.007.
Ogilvie, Y., OZ Minerals (WKN: A0Q657) gibt grünes
Licht für die Erschließung von Projekt West Musgrave
in Westaustralien. The Market Herald, 2022 https://
themarketherald.de/oz-minerals-wkn-a0q657-gibt
-gruenes-licht-fuer-die-erschliessung-von-projekt
-west-musgrave-in-westaustralien-2022-09-23/.
Ogonowski, S., Wołosiewicz-Głąb, M., Ogonowski, Z.,
Foszcz, D. and Pawełczyk, M., Comparison of Wet
and Dry Grinding in Electromagnetic Mill. Minerals,
2018, 8 (4), 138. doi:10.3390/min8040138.