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Title: ALUMINIUM SMELTER ANODE WASTE BOND INDEX DETERMINATION
ALUMINIUM SMELTER ANODE WASTE BOND INDEX DETERMINATION

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Surracco Marco; Tilocca Maria Caterina
10.5593/sgem2024/1.1/s04.54
10.5593/sgem2024/1.1
1314-2704
978-619-7603-67-5
English
24
1.1
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
4.Mineral Processing
As part of the experimental studies carried out in the Department of Civil, Environmental Engineering and Architecture of the University of Cagliari, to identify the best techniques for recovering of combustible materials, contained in the waste resulting from the dismantling of the anodes of spent electrolytic cells used in the production of primary aluminium, to be concentrated by flotation, work was first carried out to reduce the size of the waste, in order to give it a particle size that would allow it to be fed to a flotation process and to improve the liberation degree of the carbon particles to be separated. Since the Bond’s work index is an important factor in the design of the comminution circuits, in order to evaluate the grindability characteristics of the aluminium smelter anode scrap and, consequently optimize the grinding step, we proceeded to determine its Bond Index using the standard method. Bond's work index represents the energy required to reduce one short ton (907 kg) of a solid from an infinite size to 100 microns. Bond's energy law uses this index to predict the energy required to reduce the solid's size, which is the sum of the energy used to fracture the material and energy losses, such as mechanical losses occurring in comminution equipment or energy lost in the form of heat generated by attrition. A value of 11.07 kWh/sht was obtained for the Wi. This value is characteristic of rocks of medium hardness in terms of resistance to comminution. The Bond index obtained is valid for an industrial wet grinding process using a ball mill operating in a closed circuit with a mechanical classifier and a circulating charge of 250%.
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https://doi.org/10.5593/sgem2024/1.1/s04.54
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Proceedings of 24th International Multidisciplinary Scientific GeoConference SGEM 2024
24th International Multidisciplinary Scientific GeoConference SGEM 2024, 1 - 7 July, 2024
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.
417-424
1 - 7 July, 2024
website
9881
Bond work index, comminution, grindability, ball mill, carbon anode scrap

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