https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42031 Wed 17 Aug 2022 11:45:31 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37239 Wed 16 Sep 2020 09:34:02 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34791 Wed 16 Sep 2020 09:18:35 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50872 50%. Over the range of tested conditions, the critical BSL value was appeared to be insensitive to particle size but increased as Re increased. The diminishing bubble surface mobility is believed to be responsible for the observed trend. Further, a drag modification factor as a function of BSL and Reynolds number has been developed. Noticeably, the drag coefficient curves peaked at the corresponding critical BSL values. The drag modification factor may prove to be useful in modelling of the particle separation processes.]]> Wed 16 Aug 2023 11:05:24 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34575 Wed 12 Aug 2020 09:29:43 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:18697 Wed 11 Apr 2018 14:10:10 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13399 Wed 11 Apr 2018 12:39:57 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:12370 Wed 11 Apr 2018 11:10:22 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13398 Wed 11 Apr 2018 10:18:08 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55091 Wed 10 Apr 2024 08:37:48 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:40218 Wed 06 Jul 2022 16:33:48 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46677 Tue 29 Nov 2022 09:28:26 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54389 Tue 20 Feb 2024 20:46:25 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:40818 Tue 19 Jul 2022 09:37:21 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:43103 Tue 13 Sep 2022 12:47:53 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47017 Tue 13 Dec 2022 15:06:51 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46033 Tue 12 Mar 2024 18:50:24 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34130 Tue 12 Feb 2019 15:24:58 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:41381 Tue 02 Aug 2022 15:41:29 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50672 Tue 01 Aug 2023 14:44:49 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45343 Thu 27 Oct 2022 10:29:24 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39151 K₁ for the overall collision efficiency, was found to be optimum at the lower turbulence intensity of 4%. A maximum bubble surface loading, 0.142 was determined by fitting the model-predicted bubble velocity with available experimental data. With this maximum bubble surface loading constraint, the recovery model predicted two regimes namely a loading regime in the early flotation period and a saturated regime wherein the bubble loading capability was entirely exhausted. Simulation of a batch flotation system suggested that loss in bubble surface loading capacity occurred faster in a dense pulp compared to a dilute pulp system and the predicted recovery decreased with increasing solids concentration for the same gas volume fraction. Similar to the collision efficiency, the optimum recovery was obtained at Ti = 4%. Further, the model predicted recovery was compared to a lab scale coal flotation test and reasonable agreement was obtained.]]> Thu 19 May 2022 15:47:37 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47435 Thu 19 Jan 2023 16:47:40 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39937 Thu 14 Jul 2022 12:01:53 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39461 2S–C₃P) during the solidification of basic oxygen steelmaking (BOS) slag. Typically, C₂S–C₃P solidifies first and has a lower density than the remaining liquid slag, suggesting that gravity separation may be possible. This study simulated the cooling behaviour of BOS slag, and predicted the potential for spherical C₂S–C₃P particles to float. A lumped parameter heat transfer model based on ordinary differential equations was developed to predict the temporal variations of slag temperature in a 5 mm diameter Pt crucible. Hydrodynamic calculations were also carried out to study the floating behaviour of the spherical particles. The results showed reasonable agreement between predictions and experimental measurements for the slag’s cooling rate. In the separation experiments, coarse C₂S–C₃P crystals were observed in the upper section of the crucible, while a glassy slag was observed in the lower section. This is consistent with the hydrodynamic calculations that showed the single particles floating up to the interface. Preliminary approximations were also performed for industrial slag pots which showed the higher possibility of separation for a shallow and insulated slag pot. Further studies are required to confirm the nucleation and growth behaviour in the experiments.]]> Thu 09 Jun 2022 09:15:21 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:40303 Thu 07 Jul 2022 16:00:38 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33757 Thu 03 Oct 2019 14:17:55 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42714 Thu 01 Sep 2022 11:33:33 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:36784 Sun 11 Apr 2021 16:19:59 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:31203 d₉₀ = 15.8 μm) closely associated with this CSK sample was the major impurity mineral, which cannot be separated from kaolin by screening and size classification process. This work investigated the separation of fine quartz from kaolin by flotation. Single mineral flotation tests indicated that effective separation of quartz from kaolin was possible with acidic pH value (pH = 3), depressant of starch and collector of dodecyl amine (DDA). Rougher flotation tests of coal-series kaolin revealed that the SiO₂/Al₂O₃ weight ratio of the concentrate was qualified for industrial applications in the presence of 160 g/t starch and 100 g/t DDA, at acidic pH pulp. A specially designed two-stage cleaner flotation flowsheet increased the concentrate recovery from 37.26% to 46.55% compared to a rougher flotation process.]]> Sat 24 Mar 2018 08:44:46 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:8902 Sat 24 Mar 2018 08:36:43 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:7176 Sat 24 Mar 2018 08:34:17 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13339 Sat 24 Mar 2018 08:17:00 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:10707 Sat 24 Mar 2018 08:12:14 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:20781 Sat 24 Mar 2018 08:05:51 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:21383 Sat 24 Mar 2018 08:04:59 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:17742 Sat 24 Mar 2018 07:57:40 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:17144 th of the time required for liquid-liquid mixing in a capillary tube. The rise in the mixing rate was considered to be due to secondary transversal mass transport caused by passive chaotic advection.]]> Sat 24 Mar 2018 07:56:11 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:18347 137Cs radioactive source. Measurements were taken at different axial levels, for different chordal positions. An Eulerian–Eulerian approach was used to simulate the gas–solid flow in the stripper column. The CFD simulations predicted asymmetric solid holdup profiles emphasizing the importance of 3D simulations. The CFD model predictions matched well with the solid holdup data from experiments. The CFD model also clearly predicted the recirculation and dead zones as noticed in the experimental analysis. Local defluidization zones were also noticed near the donut baffle wall regions. The particle axial velocity was low near the baffle walls, indicating that the particles slide down on the baffle walls. The radial and axial variations of solid holdup are discussed in this work, giving new knowledge in the complex countercurrent operation. This work is first of its kind to report detailed 3D study on the hydrodynamics of stripper operation both in cold flow and in the CFD model.]]> Sat 24 Mar 2018 07:52:41 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:27867 Sat 24 Mar 2018 07:41:12 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:27861 Sat 24 Mar 2018 07:41:11 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26729 Sat 24 Mar 2018 07:26:18 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:25536 Sat 24 Mar 2018 07:26:03 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:3294 Sat 24 Mar 2018 07:22:23 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24471 Sat 24 Mar 2018 07:17:21 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24942 Sat 24 Mar 2018 07:14:18 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:23401 Sat 24 Mar 2018 07:13:56 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:6253 Mon 26 Nov 2018 09:58:14 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:32958 s=150, 160 and 170°) to represent the surface hydrophobicity. CFD model predicted interaction outcomes and droplet spread ratios were in reasonable agreement with the experiment at different impact Weber numbers. Increase in particle surface heat flux and corresponding rise in droplet temperature at different impact Weber numbers were also quantified which showed an increasing trend up to a critical Weber number for droplet disintegration.]]> Mon 23 Sep 2019 13:21:24 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:29900 Mon 23 Sep 2019 10:10:22 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:18621 Mon 20 Jul 2015 16:31:13 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:29760 2), with greater movement and reshaping as basicity increased]]> Mon 08 Feb 2021 12:11:20 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45801 Mon 07 Nov 2022 09:58:02 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:35023 Fri 31 May 2019 15:35:49 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45444 Fri 28 Oct 2022 14:01:23 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37603 Fri 26 Feb 2021 11:53:52 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37602 Fri 26 Feb 2021 11:46:53 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37601 20%). One of the main reasons for the low lump utilisation is the perception that the softening and melting (S&M) properties of lump ores are not as good as sinter or pellets. This has been proven to be inaccurate as the interaction between sinter and lump significantly improves the S&M behaviour. Recently, Chinese steel mills are paying more and more attention to lump to cut down the emissions and maximise profits. As an example, the lump ratio for a 1050m3 BF at Shaoguan Steel increased from 17% to ~23% (replacing pellet) whilst coke rate was decreased by 5kg/t hot metal and the productivity was increased from 2.9 to 3.3 t∙m-3∙d-1. In this work, the interaction between a high basicity sinter and Newman Blend Lump (NBLL) were studied, including the S&M behaviour, bed structure and chemical reaction. A global BF model was used to predict the impact of the mixed burden on BF performance.]]> Fri 26 Feb 2021 11:46:52 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47341 Fri 13 Jan 2023 12:16:37 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50921 Fri 11 Aug 2023 14:50:30 AEST ]]>