https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54617 Wed 06 Mar 2024 10:45:58 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54445 Tue 27 Feb 2024 13:51:53 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:9523 Sat 24 Mar 2018 08:35:34 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:28489 Sat 24 Mar 2018 07:39:36 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:22238 80 = 72 μm) and coarse (50 N silica, d₈₀ = 299 μm) silica were used as feed. The influence of collector concentration, air flow rate, froth depth, and the ratio of fine to coarse particles in the feed on both the collection and the froth zone behaviour with respect to particle size has been investigated. The results show that the overall fine particle recovery is much higher than for coarser particles and less favourable conditions for optimum flotation efficiency are sufficient. The significance of the froth barrier to coarse particle flotation is also established. The important finding of this study is that the presence of fine particles can enhance the collection of coarse particles both in the collection and froth zones.]]> Sat 24 Mar 2018 07:17:35 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37540 3. The fluidized sand medium, subjected to vibration, expanded towards the upper screen, permeating strongly through the large Sink-Hole, and to a lesser extent through the finer apertures. In fact, the excess sand on the upper screen then returned back to the lower fluidized bed via the fine screen apertures. The upward movement of the suspension through the Sink-Hole produced a strong density based separation of the larger tracer particles. It was possible to achieve sharp separation at different separation densities under batch conditions. This paper reports the effect of varying air rate and bed mass on the separation performance. Density cut points in the range 2500 to 3200 kg/m³ were obtained, which are significantly higher than the density of fluidised media, at separation efficiency (Ep) values of around 0.15.]]> Fri 26 Feb 2021 09:40:51 AEDT ]]>