All Outputs (17)

Microwave-enhanced heap leaching of porphyry copper ores: Part 1 – The role of mineralogy in microwave-induced fracture networking measured by X-ray computed tomography (2025)
Journal Article
Giyani, B., Batchelor, A., & Kingman, S. (2025). Microwave-enhanced heap leaching of porphyry copper ores: Part 1 – The role of mineralogy in microwave-induced fracture networking measured by X-ray computed tomography. Minerals Engineering, 233, Article 109589. https://doi.org/10.1016/j.mineng.2025.109589

Previous studies have shown that the magnitude of microwave-induced fractures is dependent on ore mineralogy and texture. Those studies were based on quantitative measurements of ore competency through destructive testing or one-dimensional non-destr... Read More about Microwave-enhanced heap leaching of porphyry copper ores: Part 1 – The role of mineralogy in microwave-induced fracture networking measured by X-ray computed tomography.

Microwave-enhanced heap leaching of porphyry copper ores: Part 2 – Leaching studies and flowsheet development (2025)
Journal Article
Giyani, B. F., Batchelor, A. R., Kingman, S. W., & Bearman, R. A. (2025). Microwave-enhanced heap leaching of porphyry copper ores: Part 2 – Leaching studies and flowsheet development. Minerals Engineering, 232, Article 109590. https://doi.org/10.1016/j.mineng.2025.109590

The effect of ore mineralogy and texture on the extent of microwave-induced fractures and leaching performance has been investigated using porphyry copper sulphide ores with differing lithologies to identify potential ore candidates for microwave-ass... Read More about Microwave-enhanced heap leaching of porphyry copper ores: Part 2 – Leaching studies and flowsheet development.

Chemical looping oxygen uncoupling of biochar using CuO: Influence of oxygen carrier on combustion efficiency (2025)
Journal Article
Güleç, F., Moyles, C., Tagg, H., Marshall, A., Craft, J., Batchelor, A., & Duran-Jimenez, G. (2025). Chemical looping oxygen uncoupling of biochar using CuO: Influence of oxygen carrier on combustion efficiency. Fuel, 399, Article 135685. https://doi.org/10.1016/j.fuel.2025.135685

Despite the consensus on the urgent need to mitigate climate change by reducing CO2 emissions, technological advancements lag the escalating levels of CO2. This study investigates the impact of process conditions and oxygen carrier quality on the che... Read More about Chemical looping oxygen uncoupling of biochar using CuO: Influence of oxygen carrier on combustion efficiency.

Assessing surface-level processes during column leaching: A spatiotemporal and multilevel approach combining XPS and SEM-EDS (2025)
Journal Article
Larrabure, G., Batchelor, A., Salinas-Farran, L., Neethling, S. J., & Brito-Parada, P. R. (2025). Assessing surface-level processes during column leaching: A spatiotemporal and multilevel approach combining XPS and SEM-EDS. Minerals Engineering, 228, Article 109359. https://doi.org/10.1016/j.mineng.2025.109359

Surface-level processes play a significant role during leaching. However, few studies have been devoted to studying the surface of samples as part of column leaching experiments. This study proposes a methodology to access information from the surfac... Read More about Assessing surface-level processes during column leaching: A spatiotemporal and multilevel approach combining XPS and SEM-EDS.

Single-step preparation of activated carbons from pine wood, olive stones and nutshells by KOH and microwaves: Influence of ultra-microporous for high CO2 capture (2024)
Journal Article
Duran-Jimenez, G., Rodriguez, J., Stevens, L., Altarawneh, S., Batchelor, A., Jiang, L., & Dodds, C. (2024). Single-step preparation of activated carbons from pine wood, olive stones and nutshells by KOH and microwaves: Influence of ultra-microporous for high CO2 capture. Chemical Engineering Journal, 499, Article 156135. https://doi.org/10.1016/j.cej.2024.156135

Biomass residues are crucial feedstocks for facing climate change challenges due to high-value products, such as producing activated carbons (AC) for carbon capture. Two stages of pyrolysis followed by activation at high temperatures are the most use... Read More about Single-step preparation of activated carbons from pine wood, olive stones and nutshells by KOH and microwaves: Influence of ultra-microporous for high CO2 capture.

Solving the microwave heating uniformity conundrum for scalable high-temperature processes via a toroidal fluidised-bed reactor (2024)
Journal Article
Rodriguez, J., Morona, L., Erans, M., Buttress, A. J., Nicholls, M., Batchelor, A. R., Duran-Jimenez, G., Kingman, S., Groszek, D., & Dodds, C. (2024). Solving the microwave heating uniformity conundrum for scalable high-temperature processes via a toroidal fluidised-bed reactor. Chemical Engineering and Processing: Process Intensification, 202, Article 109838. https://doi.org/10.1016/j.cep.2024.109838

Challenges exist to implementing high-temperature microwave processes with changing dielectric properties that achieve uniform processing. This paper presents a new high-temperature hybrid microwave processing system which overcomes these challenges... Read More about Solving the microwave heating uniformity conundrum for scalable high-temperature processes via a toroidal fluidised-bed reactor.

Multimodal assessment of the curing of agglomerated ores in the presence of chloride ions (2021)
Journal Article
Salinas-Farran, L., Batchelor, A., & Neethling, S. J. (2022). Multimodal assessment of the curing of agglomerated ores in the presence of chloride ions. Hydrometallurgy, 207, Article 105776. https://doi.org/10.1016/j.hydromet.2021.105776

Agglomeration and subsequent curing are widely used as pre-treatment for ore prior to heap leaching as it both improve the permeability of the heap and brings leaching solution into close contact with the ore, initializing the leaching reactions. Des... Read More about Multimodal assessment of the curing of agglomerated ores in the presence of chloride ions.

Microwave digestion of gibbsite and bauxite in sodium hydroxide (2020)
Journal Article
Dillinger, B., Batchelor, A., Katrib, J., Dodds, C., Suchicital, C., Kingman, S., & Clark, D. (2020). Microwave digestion of gibbsite and bauxite in sodium hydroxide. Hydrometallurgy, 192, Article 105257. https://doi.org/10.1016/j.hydromet.2020.105257

It was hypothesized that bauxite digestion may be improved by using microwave heating as it has been shown in literature that some material processes have improved efficiency. To test this hypothesis, a set of digestion experiments were conducted usi... Read More about Microwave digestion of gibbsite and bauxite in sodium hydroxide.

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., Stoll, D., Dodds, C., & Kingman, S. (2017). Towards large scale microwave treatment of ores: Part 2 - Metallurgical testing. Minerals Engineering, 111, 5-24. https://doi.org/10.1016/j.mineng.2017.05.003

© 2017 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 gene... Read More about Towards large scale microwave treatment of ores: Part 2 - Metallurgical testing.

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., Dodds, C., & Kingman, S. (2017). Towards large scale microwave treatment of ores: Part 1 – Basis of design, construction and commissioning. Minerals Engineering, 109, https://doi.org/10.1016/j.mineng.2017.03.006

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 about Towards large scale microwave treatment of ores: Part 1 – Basis of design, construction and commissioning.

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, https://doi.org/10.1016/j.minpro.2016.08.011

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 about Understanding selectivity in radio frequency and microwave sorting of porphyry copper ores.

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, 328-338. https://doi.org/10.1016/j.mineng.2016.07.009

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 about Pilot scale microwave sorting of porphyry copper ores: Part 2 – Pilot plant trials.

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, 303-327. https://doi.org/10.1016/j.mineng.2016.07.007

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 about Pilot scale microwave sorting of porphyry copper ores: Part 1 – Laboratory investigations.

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, https://doi.org/10.1007/s11947-016-1762-6

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 about A tool for predicting heating uniformity in industrial radio frequency processing.

Increasing the grind size for effective liberation and flotation of a porphyry copper ore by microwave treatment (2016)
Journal Article
Batchelor, A., Jones, D., Plint, S., & Kingman, S. (2016). Increasing the grind size for effective liberation and flotation of a porphyry copper ore by microwave treatment. Minerals Engineering, 94, https://doi.org/10.1016/j.mineng.2016.05.011

In this paper, mineralogy, grain size, dissemination, textural consistency and mineral associations were determined for a commercially exploited porphyry copper ore using a Mineral Liberation Analyser (MLA). The ore was subjected to high power densit... Read More about Increasing the grind size for effective liberation and flotation of a porphyry copper ore by microwave treatment.

Understanding microwave induced sorting of porphyry copper ores (2015)
Journal Article
John, R., Batchelor, A., Ivanov, D., Udoudo, O., Jones, D., Dodds, C., & Kingman, S. (2015). Understanding microwave induced sorting of porphyry copper ores. Minerals Engineering, 84, https://doi.org/10.1016/j.mineng.2015.10.006

Global demand for minerals and metals is increasing. It has been established that the impact of mining and mineral processing operations must be reduced to sustainably meet the demands of a low grade future. Successful incorporation of ore sorting in... Read More about Understanding microwave induced sorting of porphyry copper ores.

Deriving the ideal ore texture for microwave treatment of metalliferous ores (2015)
Journal Article
Batchelor, A., Jones, D., Plint, S., & Kingman, S. (2015). Deriving the ideal ore texture for microwave treatment of metalliferous ores. Minerals Engineering, 84, https://doi.org/10.1016/j.mineng.2015.10.007

High power density microwave treatments on metalliferous ores have historically been shown to reduce ore competency prior to beneficiation at economically feasible energy inputs. However, the relationship between mineralogical textural features and t... Read More about Deriving the ideal ore texture for microwave treatment of metalliferous ores.