Research Repository

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Production of high purity silica by microfluidic-inclusion fracture using microwave pre-treatment (2018)
Journal Article
Buttress, A., Rodriguez, J., Ure, A., Ferrari, R., Dodds, C., & Kingman, S. (2019). Production of high purity silica by microfluidic-inclusion fracture using microwave pre-treatment. Minerals Engineering, 131, 407-419. doi:10.1016/j.mineng.2018.11.025

Demand for high purity silica used in component manufacture is set to outstrip current supply in the near future. As such, alternative processing routes to feed-stock materials suitable for use in lighting and solar cell fabrication are required, wit... Read More

Realising the environmental benefits of metal–organic frameworks: recent advances in microwave synthesis (2018)
Journal Article
Thomas-Hillman, I., Laybourn, A., Dodds, C., & Kingman, S. W. (in press). Realising the environmental benefits of metal–organic frameworks: recent advances in microwave synthesis. Journal of Materials Chemistry A, doi:10.1039/c8ta02919a. ISSN 2050-7488

Metal–organic frameworks (MOFs) are a broad class of porous crystalline materials that show great potential for a wide-range of applications in areas such as energy and environmental sustainability. MOFscan show significant advantages in gas selectiv... Read More

Microwave assisted hydro-distillation of essential oils from fresh ginger root (Zingiber officinale Roscoe) (2017)
Journal Article
Racoti, A., Buttress, A., Binner, E., Dodds, C., Trifan, A., & Calinescu, I. (2017). Microwave assisted hydro-distillation of essential oils from fresh ginger root (Zingiber officinale Roscoe). Journal of Essential Oil Research, doi:10.1080/10412905.2017.1360216. ISSN 1041-2905

A solvent free in situ microwave hydro-distillation method for extraction of essential oil from fresh ginger root it presented. Extraction was conducted in a TE10n single-mode microwave cavity and variable power 2 kW generator operating at 2.45GHz. T... Read More

Towards large scale microwave treatment of ores: Part 2 - Metallurgical testing (2017)
Journal Article
Batchelor, A., Buttress, A., Jones, D., Katrib, J., Way, D., Chenje, T., …Kingman, S. (2017). Towards large scale microwave treatment of ores: Part 2 - Metallurgical testing. Minerals Engineering, 111, doi:10.1016/j.mineng.2017.05.003. ISSN 0892-6875

A pilot scale microwave treatment system capable of treating 10-150t/h of material at 10-200kW was designed, constructed and commissioned in order to understand the engineering challenges of microwave-induced fracture of ores at scale and generate la... Read More

Calibrated X-ray micro-tomography for mineral ore quantification (2017)
Journal Article
Reyes, F., Lin, Q., Udoudo, O., Dodds, C., Lee, P., & Neethling, S. (2017). Calibrated X-ray micro-tomography for mineral ore quantification. Minerals Engineering, 110, doi:10.1016/j.mineng.2017.04.015. ISSN 0892-6875

Scanning Electron Microscopy (SEM) based assessments are the most widely used and trusted imaging technique for mineral ore quantification. X-ray micro tomography (XMT) is a more recent addition to the mineralogy toolbox, but with the potential to ex... Read More

Towards large scale microwave treatment of ores: Part 1 – Basis of design, construction and commissioning (2017)
Journal Article
Buttress, A., Katrib, J., Batchelor, A., Jones, D., Craig, D., Royal, T., …Kingman, S. (2017). Towards large scale microwave treatment of ores: Part 1 – Basis of design, construction and commissioning. Minerals Engineering, 109, doi:10.1016/j.mineng.2017.03.006. ISSN 0892-6875

Despite over thirty years of work, microwave pre-treatment processes for beneficiation of ores have not progressed much further than laboratory testing. In this paper we present a scaleable pilot-scale system for the microwave treatment of ores capab... Read More

Metal–organic frameworks in seconds via selective microwave heating (2017)
Journal Article
Laybourn, A., Katrib, J., Ferrari-John, R. S., Morris, C. G., Yang, S., Udoudo, O., …Schröder, M. (2017). Metal–organic frameworks in seconds via selective microwave heating. Journal of Materials Chemistry A, 16(5), doi:10.1039/C7TA01493G. ISSN 2050-7488

Synthesis of metal–organic framework (MOF) materials via microwave heating often involves shorter reaction times and offers enhanced control of particle size compared to conventional heating. However, there is little understanding of the interactions... Read More

Statistical description of inhomogeneous samples by scanning microwave microscopy (2017)
Journal Article
Monti, T., Udoudo, O., Sperin, K. A., Dodds, C., Kingman, S., & Jackson, T. J. (2017). Statistical description of inhomogeneous samples by scanning microwave microscopy. IEEE Transactions on Microwave Theory and Techniques, 65(6), doi:10.1109/TMTT.2016.2642940. ISSN 0018-9480

A quantitative analysis of the dielectric properties of a multiphase sample using a scanning microwave microscope (SMM) is proposed. The method is demonstrated using inhomogeneous samples composed of a resin containing micrometric inclusions of a kno... Read More

Electromagnetic heating for industrial kilning of malt: a feasibility study (2016)
Journal Article
Ferrari-John, R., Katrib, J., Zerva, E., Davies, N., Cook, D. J., Dodds, C., & Kingman, S. (in press). Electromagnetic heating for industrial kilning of malt: a feasibility study. Food and Bioprocess Technology, doi:10.1007/s11947-016-1849-0. ISSN 1935-5130

Industrial malting operations use ~800kWh/t of energy to produce the heat required to kiln malt. Electromagnetic heating technologies are suggested as a way to potentially improve the energy efficiency of the kilning processing. In this work, the pot... Read More

Understanding selectivity in radio frequency and microwave sorting of porphyry copper ores (2016)
Journal Article
Ferrari-John, R., Batchelor, A., Katrib, J., Dodds, C., & Kingman, S. (in press). Understanding selectivity in radio frequency and microwave sorting of porphyry copper ores. International Journal of Mineral Processing, 155, doi:10.1016/j.minpro.2016.08.011. ISSN 0301-7516

Continuous high-throughput microwave treatment followed by infrared thermal imaging (MW-IR) has previously been shown to provide attractive separations for a number of porphyry copper ores, leading to rejection of a large proportion of barren fragmen... Read More

Pilot scale microwave sorting of porphyry copper ores: Part 2: pilot plant trials (2016)
Journal Article
Batchelor, A., Ferrari-John, R., Dodds, C., & Kingman, S. (2016). Pilot scale microwave sorting of porphyry copper ores: Part 2: pilot plant trials. Minerals Engineering, 98, doi:10.1016/j.mineng.2016.07.009. ISSN 0892-6875

An experimental pilot plant was constructed, commissioned and operated at a major porphyry copper mine to understand the challenges of microwave infrared thermal (MW-IRT) sorting at scale and to compare batch laboratory performance with pilot-scale c... Read More

Pilot scale microwave sorting of porphyry copper ores: Part 1: laboratory investigations (2016)
Journal Article
Batchelor, A., Ferrari-John, R., Katrib, J., Udoudo, O., Jones, D., Dodds, C., & Kingman, S. (2016). Pilot scale microwave sorting of porphyry copper ores: Part 1: laboratory investigations. Minerals Engineering, 98, doi:10.1016/j.mineng.2016.07.007. ISSN 0892-6875

Microwave treatment followed by infrared thermal imaging (MW–IRT) has been proposed as a potential excitation-discrimination technique to facilitate sorting of porphyry copper ores. A continuous, high throughput (up to 100t/h), belt–based microwave c... Read More

A tool for predicting heating uniformity in industrial radio frequency processing (2016)
Journal Article
Ferrari-John, R., Katrib, J., Palade, P., Batchelor, A., Dodds, C., & Kingman, S. (in press). A tool for predicting heating uniformity in industrial radio frequency processing. Food and Bioprocess Technology, doi:10.1007/s11947-016-1762-6. ISSN 1935-5130

Radio frequency energy is utilised for heating in a wide range of applications, particularly in the food industry. A major challenge of RF processing is non-uniform heating in loads of variable and angular geometry, leading to reduced quality and pro... Read More