https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:40950 Wed 20 Jul 2022 13:51:23 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:55750 Wed 19 Jun 2024 15:57:54 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49011 Wed 03 May 2023 12:24:44 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:35318 Tue 23 Jul 2019 11:43:30 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43461 2O₃), goethite (FeO(OH)) and silica (SiO₂). Pure mineral samples were sieved to the 63 - 90 mum size fraction and tested using our custom-made electrostatic agglomeration rig. A dry particle bed of 2 - 5 mg was formed on a glass slide on a metal charging plate and the bed raised toward a pendent, earthed water droplet at 50 µm·s^-1. The particles transfer, or jump, to the droplet as the electric field between the bed and droplet changes during approach, resulting in a net force on the particles. At applied voltages ranging from 1.5 - 3.0 kV the separation between the bed and particles when the particles were first observed to transfer was monitored. For each mineral the separation increased with applied voltage due to increased electric field strength. Pure goethite transferred most readily at all voltages as the drop-bed separation distance when the first particle was observed to jump was the greatest, whereas haematite and silica behaved similarly. High cohesion between goethite and haematite particles in mixed particle beds of both minerals resulted in particles transferring to the drop at separations between those observed for beds of the pure minerals. Careful determination of mineral composition of the dry bed and the transferred particle sample will indicate whether this approach may have potential application as a "rougher"-type step in the separation of goethite from haematite.]]> Tue 20 Sep 2022 08:42:32 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43172 Tue 13 Sep 2022 16:03:37 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:48658 Tue 06 Feb 2024 15:26:51 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47189 Thu 18 May 2023 14:48:16 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:44450 Thu 13 Oct 2022 14:31:54 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:41706 Thu 11 Aug 2022 15:10:20 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34971 Mon 27 May 2019 16:58:55 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46960 Mon 12 Dec 2022 11:04:27 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49244 Mon 08 May 2023 10:21:31 AEST ]]>