- Title
- A case study of grinding coarse 5 mm particles into sand grade particles less than 2.36 mm
- Creator
- Reed, Aaron; Koroznikova, Larissa; Khandelwal, Manoj
- Date
- 2021
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/176158
- Identifier
- vital:15080
- Identifier
-
https://doi.org/10.15625/0866-7187/15701
- Identifier
- ISBN:2615-9783 (ISSN)
- Abstract
- This paper presents the viability study of utilising a rod or ball mill to grind a ‘5 mm grit’ to 100% passing 2.36 mm and fit in with a desired particle size analysis. The aim is to introduce this grit into the concrete grade sand produced at the Hanson owned Axedale Sand & Gravel quarry to reduce generated waste and improve the process efficiency. A ball mill and rod mill were used to grind the samples at an interval of 5 and 10 minutes. From the laboratory experimental analysis, it was found that a ball mill with 5 minutes grinding time in closed-circuit using a classifier to remove undersize and reintroduce oversize to the mill would be a viable option in an industrial setting. A Bond Ball Mill Grindability Test was undertaken to determine the grindability of the 5 mm grit, which served to determine the power (kWh/t) required to grind it to 100% passing 2.36 mm. The bond ball mill grindability test showed that the grit had a work index value of 17.66 kWh/t. This work index gives an actual work input of 13.54 kWh/t, meaning that for every ton of feed material introduced to the mill, 13.54 kWh of work input is required to grind it to 150 microns. © 2021 Vietnam Academy of Science and Technology.
- Publisher
- Publishing House of Natural Science and Technology, VAST
- Relation
- Vietnam Journal of Earth Sciences Vol. 43, no. 1 (2021), p. 57-70
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- Copyright @ 2021 Vietnam Academy of Science and Technology
- Rights
- Open Access
- Subject
- 04 Earth Sciences; Ball mill; Bond index; Fine grade sand; Grinding
- Full Text
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