The stirred mill was found to be more efficient (lower grinding time and lower energy consumption) in ultrafine grinding.
📌 3 Key Takeaways
🎯
Objective & Hypothesis:The mining industry has a requirement to treat fine (<30 µm) and ultrafine (<10 µm) feed materials, a target difficult or ineffective for traditional milling processes such as conventional tumbling ball milling.
📊
Key Findings & Data:In this study, bauxite samples were grinded to ultrafine size (~5 µm) by a laboratory scale stirred mill and its performance was compared with a laboratory scale conventional ball mill.
💡
Conclusion & Impact:The stirred mill was found to be more efficient (lower grinding time and lower energy consumption) in ultrafine grinding.
The mining industry has a requirement to treat fine (<30 µm) and ultrafine (<10 µm) feed materials, a target difficult or ineffective for traditional milling processes such as conventional tumbling ball milling. The favoured route has been the use of stirred mills. Stirred mills are primarily used for ultrafine grinding applications in the mining industry. In this study, bauxite samples were grinded to ultrafine size (~5 µm) by a laboratory scale stirred mill and its performance was compared with a laboratory scale conventional ball mill. The stirred mill was found to be more efficient (lower grinding time and lower energy consumption) in ultrafine grinding.
HACIFAZLIOĞLU, H. (2018). Ultrafine Grinding of Kokaksu Bauxite ore via Stirred Mill and Ball Mill. Open Journal of Nano, Cilt: 3 - Sayı: 1, 1–4. https://ajindex.com/articles/794622
Mankosa, M. J., Adel, G.T. and Yoon, R.H., (1986). Effect of media size in stirred ball mill grinding of coal, Powder Technology, 49, 75-82
Underle, U., Woodall, P., Duffy, M., Johnson, N.W., (1997). Stirred mill technology for regrinding McArthur river and Mount Isa zinc/lead ores. In: Proceedings of XX IMPC––Aachen, 21–26 September, 71–78
Burgess, F., McGuire, I., Willoughby, R. (2001). Operation of sand mill detritors at Pasminco operations. In: Fine Particle Processing and Tailing Summit, July, Perth, Australia [4] Ellis, S., Gao, M., (2002). The development of ultra fine grinding at KCGM. In: SME Annual Meeting. 25–27 February, Phoenix, Arizona, preprint 02-072
Jankovic, A., (2003). Variables affecting the fine grinding of minerals using stirred mills, Minerals Engineering, 16, 337-345
Mankosa, M. J., Adel, G.T. and Yoon, R.H., (1989). Effect of operating parameters in stirred ball mill grinding of coal, Powder Technology, 59,255-260
Gao, M. W. and Forssberg, E., (1993). A study on the effect of parameters in stirred ball milling, International Journal of Mineral processing, 37, 45-59
Kwade, A.,Blecher, L. and Schwedes, J., (1996). Motion and stress Intensity of grinding beads in a Stirred media mill. Part 2: stress intensity and its effect on comminution, Powder Technology, 86, 69-76
Jankovic, A., Valery, W. (2004). Fine and ultra fine grinding — the facts and myths Proceedings of the 6th Annual I.I.R. Crushing and Grinding Conference, Perth
Kwade, A., (1999). Wet comminution in stirred media mills-research and its practical application, Powder Technology, 105. 14-20
Napier-Munn, T.J, Morrell, S, Morrison, R.D, Kojovic, T., (2005). Mineral Comminution Circuits, Their Operation and Optimization, JKMRC, Australia
Prziwara,P., Hamilton, L.D., Breitung-Faes, S., Kwade,A. (2018). Impact of grinding aids and process parameters on dry stirredmedia milling, Powder Technology 335, 114-123
Hasan, M., Palaniandy, S.,Hilden, M., Powell, M.(2017) Calculating breakage parameters of a batch vertical stirred mill, Minerals Engineering, 111, 229-237.