Dr. Daniel Borrow obtained his PhD from the University of Newcastle in 2020. From 2020 to
present, he has been working at the University of Newcastle as a
research associate, focusing on novel mineral beneficiation processes.
Qualifications
Doctor of Philosophy in Chemical Engineering, University of Newcastle
Bachelor of Engineering (Chemical Engineering), University of Newcastle
Keywords
Chemical Engineering
Emulsions
Mineral Processing
Fields of Research
Code
Description
Percentage
401904
Mineral processing/beneficiation
60
400409
Separation technologies
40
Professional Experience
UON Appointment
Title
Organisation / Department
Research Associate
University of Newcastle School of Engineering Australia
A 2 m diameter REFLUX¿ Flotation Cell was fed at roughly 210 m3/h, equivalent to a flux of 1.9 cm/s, about twice the maximum rate used in conventional flotation cells. The coal fe... [more]
A 2 m diameter REFLUX¿ Flotation Cell was fed at roughly 210 m3/h, equivalent to a flux of 1.9 cm/s, about twice the maximum rate used in conventional flotation cells. The coal feed slurry had 59¿64 wt% head ash and nominal size range -0.100 mm (Sauter mean size 0.004 mm). The air, wash water and underflow rates were 180 m3/h, 65 m3/h and 235 m3/h respectively, giving a positive downwards wash water bias flux of 0.2 cm/s. Product ashes of 11¿15 wt% were obtained at combustible recoveries of 58¿75 %, with results on or better than the tree curve. These initial results demonstrate that the beneficial hydrodynamics seen at laboratory scale are realised at full-scale. Also demonstrated is the use of a novel oil-agglomeration technique to obtain detailed performance versus size data, showing that high hydrophobic recoveries were being obtained at sizes down to 0.001 mm.
Van Netten K, Borrow DJ, Galvin KP, 'Fast Agglomeration of Ultrafine Hydrophobic Particles Using a High-Internal-Phase Emulsion Binder Comprising Permeable Hydrophobic Films', Industrial and Engineering Chemistry Research, 56 10658-10666 (2017) [C1]
A novel hydrophobic binder consisting of tightly packed drops of aqueous salt solution, stabilized by thin films of oil, in the form of a high-internal-phase water-in-oil emulsion... [more]
A novel hydrophobic binder consisting of tightly packed drops of aqueous salt solution, stabilized by thin films of oil, in the form of a high-internal-phase water-in-oil emulsion was used to agglomerate ultrafine hydrophobic particles in seconds to a size sufficient for their capture on a 150-µm screen. Almost complete recovery of the particles, extending from sizes of more than 100 µm to less than 500 nm, was achieved. Examination of the process revealed that the agglomeration appears to be governed primarily by the length scale of the thin oil films, on the order of 30 nm, and their ability to quickly and efficiently deliver organic liquid to the particles. Moreover, it appears that the hydrodynamic resistance that develops when a particle is driven toward an interface is reduced because of the permeability of the films. Water permeation driven by osmosis also appears to assist the transport of the particles toward the interface. (Figure Presented).
Borrow DJ, Van Netten K, Galvin KP, 'Ultrafast agglomeration using a novel binder in a continuous plug flow system', IMPC 2018 - 29th International Mineral Processing Congress, Moscow; Russian Federation (2019) [E1]
De Iuliis G, Sahasrabudhe G, Borrow DJ, Galvin KP, 'Investigation of a Novel Emulsion Binder for Recovering Ultrafine Hydrophobic Particles', Chemeca 2019: Chemical Engineering Megatrends and Elements, Sydney (2019) [E1]
