- Title
- Moisture/particle interactions under oscillatory motion: model development
- Creator
- Ilic, D; Williams, K; Gurung, V; Lavrinec, A
- Relation
- Iron Ore Conference 2023, Transitioning to a green future. Proceedings of the Iron Ore Conference 2023, Transitioning to a green future (Perth, W.A. 18 -20 September, 2023) p. 623-633
- Relation
- https://www.ausimm.com/conferences-and-events/iron-ore/
- Publisher
- The Australasian Institute of Mining and Metallurgy (AusIMM)
- Resource Type
- conference paper
- Date
- 2023
- Description
- The moisture content of iron ore during handling can range from the dust extinction moisture at the point of arrival at the port to the transportable moisture limit at the point of loading ships for maritime transport. Moisture content and ore composition, specifically fines content, have a large influence on ore flowability. Typically, elevated moisture can result in bottlenecks, downtime and lost productivity due to build-up, conveyor carry-back and blockages, increasing maintenance costs. On the other hand, low moisture can result in increased dust emissions influencing the environmental footprint and product losses. Managing the use of water across the supply chain is therefore critical for service life of equipment, productivity, but also has environmental and social impacts, affecting the social license to operate. Previously, experiments have shown that oscillations induced in iron ore during handling and transport can result in movement of moisture through the ore. This kind of moisture migration depends on the nature of these oscillations, such as the undulation of idlers during conveying, the inherent ore properties and the initial moisture content. Moisture has been observed to move either upwards and/or towards the bottom of the burden. These effects can be exploited to remove excess water from the ore influencing handleability and operation, however, the actual mechanisms of moisture migration are currently poorly understood. The study presented herein involves the use of simulation to examine moisture and ore interactions. Simulations using discrete element method (DEM) and coupled with smoothed particle hydrodynamics (SPH) are implemented to investigate the behaviour of moisture in wet ore in the presence of oscillation. This is conducted at a fundamental level first using glass beads and water which is then compared to iron ore at high moisture content. The results of the modelling are discussed in view of experiments conducted.
- Subject
- model development; moisture content; iron ore; oscillation
- Identifier
- http://hdl.handle.net/1959.13/1500304
- Identifier
- uon:54901
- Identifier
- ISBN:9781922395177
- Language
- eng
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