https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43935 Wed 28 Feb 2024 14:55:05 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:54559 Wed 28 Feb 2024 10:25:37 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:37239 Wed 16 Sep 2020 09:34:02 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34791 Wed 16 Sep 2020 09:18:35 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50307 Wed 13 Mar 2024 07:46:41 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:44395 Wed 12 Oct 2022 12:51:35 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34571 Wed 12 Aug 2020 13:20:43 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34575 Wed 12 Aug 2020 09:29:43 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49302 100°C), and sintered bed. The sintering experiments were conducted in a lab-scale milli-pot (diameter 53 mm, height 500 mm) fitted with six taps and transient variations of pressure-drop in different zones were analysed. The resistance was quantified for the three zones by correlating pressure gradient in each zone (ΔP/L) with the specific kinetic energy of air (v2) during sintering. The high temperature zone was further divided into two sub-zones i.e. pre-melt reaction zone (PMRZ) and granule melting zone. The PMRZ was responsible for the highest pressure gradient in the bed during sintering due to the changes in bed structure and the much greater gas volumetric flow rate due to the high gas temperature. The PMRZ included various physico-chemical processes and it was observed that the resistance in the PMRZ was high at a high suction value across the bed. High productivity was observed for a high suction pressure. The sinter yield was influenced by holding time over 1200°C and an exponential growth function was proposed to estimate the sinter yield.]]> Wed 10 May 2023 16:57:16 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43964 Wed 05 Oct 2022 14:08:23 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:40818 Tue 19 Jul 2022 09:37:21 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:55642 Tue 11 Jun 2024 18:50:56 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:35039 Tue 11 Jun 2019 10:07:53 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:51444 Tue 05 Sep 2023 17:53:44 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:40634 Tue 05 Sep 2023 15:13:06 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:45343 Thu 27 Oct 2022 10:29:24 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39636 Thu 16 Jun 2022 14:27:16 AEST ]]> https://ogma.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://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:42714 Thu 01 Sep 2022 11:33:33 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:54594 Sat 02 Mar 2024 11:25:56 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31473 Mon 23 Sep 2019 11:42:24 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39102 Mon 09 May 2022 15:20:35 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24503 Mon 08 Feb 2021 14:03:23 AEDT ]]> https://ogma.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://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:35023 Fri 31 May 2019 15:35:49 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30550 Fri 30 Aug 2019 13:21:53 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:37607 Fri 26 Feb 2021 13:38:51 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:36247 Fri 26 Feb 2021 13:23:58 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:37608 2 gas mixture at 900°C in a tube furnace thermo-gravimetric analyzer. The degree of reduction of the tablets in this study was found to be controlled by the porosity of the samples, rather than by the morphology or mineralogy of the bonding phase.]]> Fri 26 Feb 2021 13:02:47 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:37603 Fri 26 Feb 2021 11:53:52 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:37602 Fri 26 Feb 2021 11:46:53 AEDT ]]> https://ogma.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://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:37598 Fri 26 Feb 2021 11:25:51 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46601 Fri 25 Nov 2022 15:38:41 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:36244 Fri 17 Nov 2023 11:52:24 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:53192 Fri 17 Nov 2023 11:48:55 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39733 Fri 17 Jun 2022 17:59:03 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:55288 Fri 10 May 2024 16:22:31 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:55918 Fri 05 Jul 2024 14:14:10 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:32547 Fri 05 Feb 2021 15:00:20 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:40259 1200 °C). To quantify the effect of the different process, sintering experiments were conducted in a milli-pot (diameter 53mm, height 500mm) with relatively high spatial resolution of pressure and temperature measurements. Overall, six taps were fitted in the milli-pot with two taps in the upper half at 100mm distance and four taps were fitted in lower half at 50mm distance for better spatial resolution. It was found that in region of maximum resistance, coke combustion contributed to more than 50% of the pressure drop when compared to other processes. The pressure drop contribution of the coke combustion region increased as the coke addition rate increased.]]> Fri 05 Aug 2022 10:46:50 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52976 Fri 03 Nov 2023 15:30:56 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49782 Fri 02 Jun 2023 17:28:43 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49837 Fri 02 Jun 2023 16:18:12 AEST ]]>