Xumeng Chen is a Research Fellow at the University of Queensland. He obtained his PhD in JKMRC in 2015. His PhD studies focused on investigating effects of different regrinding conditions on cleaner flotation, including grinding media, particle breakage mechanism, ore mineralogy and content of sulphide gangues. Strategies were developed to optimise regrinding conditions, which have been successfully applied in the participating plant and improved Cu/Au flotation after regrinding pyrite concentrates. This project provided important guidance for the industry when commissioning and operating a regrind-cleaner flotation circuit. Since 2015, he has been working as a Research Fellow and has developed several technologies for the mineral and coal industry, including the management of clay minerals in flotation by applying novel reagents, the tuning of flotation reagents for oxidized coal flotation through online monitoring of surface oxidation, and improving flotation product dewatering through deaeration of tenacious forth. In 2017, he was awarded Advance Queensland Research Fellow by Queensland State Government to develop and implement new chemistries in flotation. He has also lead plant surveys and optimisations in more than 20 plants in base metal, precious metal and coal mines across Australia and South America. His current research focuses on ultrafine grinding and flotation, optimisation of plant pulp chemistry, flotation of low grade and oxidized ores, novel flotation reagents, online chemistry monitoring systems, and froth management.
Journal Article: Correction to “The influence of kaolinite and quartz on stability of coal froths ─ a rheology and structure study”
Zhang, Na and Chen, Xumeng (2023). Correction to “The influence of kaolinite and quartz on stability of coal froths ─ a rheology and structure study”. ACS Omega, 8 (45), 43356-43356. doi: 10.1021/acsomega.3c07634
Journal Article: The influence of kaolinite and quartz on stability of coal froths - a rheology and structure study
Zhang, Na and Chen, Xumeng (2023). The influence of kaolinite and quartz on stability of coal froths - a rheology and structure study. ACS Omega, 8 (37), 33564-33571. doi: 10.1021/acsomega.3c03647
Journal Article: Physically emulsifying oily collectors to produce optimal droplet sizes for flotation
Chen, Xumeng and Peng, Yongjun (2022). Physically emulsifying oily collectors to produce optimal droplet sizes for flotation. Minerals Engineering, 184 107641, 107641. doi: 10.1016/j.mineng.2022.107641
Improving Mineral, Coal and Oil Processing by De-aerating Persistent Froth
(2021–2027) Global Innovation Linkages
(2021–2023) Australian Coal Association Research Program
(2021–2023) Australian Coal Association Research Program
Chemical deaeration of overly stable coal froth
(2022) Doctor Philosophy
(2022) Doctor Philosophy
Diesel emulsification for coal flotation in saline water
(2021) Master Philosophy
Zhang, Na and Chen, Xumeng (2023). Correction to “The influence of kaolinite and quartz on stability of coal froths ─ a rheology and structure study”. ACS Omega, 8 (45), 43356-43356. doi: 10.1021/acsomega.3c07634
The influence of kaolinite and quartz on stability of coal froths - a rheology and structure study
Zhang, Na and Chen, Xumeng (2023). The influence of kaolinite and quartz on stability of coal froths - a rheology and structure study. ACS Omega, 8 (37), 33564-33571. doi: 10.1021/acsomega.3c03647
Physically emulsifying oily collectors to produce optimal droplet sizes for flotation
Chen, Xumeng and Peng, Yongjun (2022). Physically emulsifying oily collectors to produce optimal droplet sizes for flotation. Minerals Engineering, 184 107641, 107641. doi: 10.1016/j.mineng.2022.107641
Chen, Xumeng, Shi, Zhiming and Peng, Yongjun (2022). The development of a novel type of microelectrodes to evaluate the reactivity of fine sulphide mineral particles. Minerals Engineering, 183 107595, 107595. doi: 10.1016/j.mineng.2022.107595
Flotation performance of chalcopyrite in the presence of an elevated pyrite proportion
Lee, Richard Li Jie, Chen, Xumeng and Peng, Yongjun (2022). Flotation performance of chalcopyrite in the presence of an elevated pyrite proportion. Minerals Engineering, 177 107387, 107387. doi: 10.1016/j.mineng.2021.107387
Cao, Liang, Chen, Xumeng and Peng, Yongjun (2022). The interaction of frothers with hydrophobic and hydrophilic sites of coal particles in NaCl solution. Powder Technology, 396 (Part A), 378-384. doi: 10.1016/j.powtec.2021.11.011
Destabilising persistent coal froth using silicone oil
Liu, Shiqi, Chen, Xumeng and Peng, Yongjun (2021). Destabilising persistent coal froth using silicone oil. International Journal of Mining Science and Technology, 31 (6), 1023-1031. doi: 10.1016/j.ijmst.2021.11.005
Deaeration of stable coal froth by surfactants to modify the interfacial properties
Liu, Shiqi, Chen, Xumeng and Peng, Yongjun (2021). Deaeration of stable coal froth by surfactants to modify the interfacial properties. Fuel, 298 120839, 120839. doi: 10.1016/j.fuel.2021.120839
The depression of molybdenite flotation by sodium metabisulphite in fresh water and seawater
Chen, Yang, Chen, Xumeng and Peng, Yongjun (2021). The depression of molybdenite flotation by sodium metabisulphite in fresh water and seawater. Minerals Engineering, 168 106939, 106939. doi: 10.1016/j.mineng.2021.106939
The adsorption and orientation of frother surfactants on heterogeneous wetting surfaces
Cao, Liang, Chen, Xumeng and Peng, Yongjun (2021). The adsorption and orientation of frother surfactants on heterogeneous wetting surfaces. Applied Surface Science, 548 149225, 1-6. doi: 10.1016/j.apsusc.2021.149225
The formation and stabilization of oily collector emulsions – a critical review
Cao, Liang, Chen, Xumeng and Peng, Yongjun (2021). The formation and stabilization of oily collector emulsions – a critical review. Mineral Processing and Extractive Metallurgy Review, 42 (6), 388-405. doi: 10.1080/08827508.2020.1776279
The effect of sodium hydrosulfide on molybdenite flotation in seawater and diluted seawater
Chen, Yang, Chen, Xumeng and Peng, Yongjun (2020). The effect of sodium hydrosulfide on molybdenite flotation in seawater and diluted seawater. Minerals Engineering, 158 106589, 106589. doi: 10.1016/j.mineng.2020.106589
The effect of aliphatic alcohol frothers on the dispersion of oily collector
Cao, Liang, Chen, Xumeng and Peng, Yongjun (2020). The effect of aliphatic alcohol frothers on the dispersion of oily collector. Minerals Engineering, 157 106552, 1-7. doi: 10.1016/j.mineng.2020.106552
Cao, Liang, Chen, Xumeng and Peng, Yongjun (2020). The effect of polyglycol-type frothers on the interfacial characteristics of oily collector dispersion. Minerals Engineering, 157 106579, 1-7. doi: 10.1016/j.mineng.2020.106579
Effects of froth properties on dewatering of flotation products– A critical review
Zhang, Na, Chen, Xumeng and Peng, Yongjun (2020). Effects of froth properties on dewatering of flotation products– A critical review. Minerals Engineering, 155 106477, 106477. doi: 10.1016/j.mineng.2020.106477
Zhang, Na, Chen, Xumeng and Peng, Yonjung (2020). The interaction between kaolinite and saline water in affecting the microstructure, rheology and settling of coal flotation products. Powder Technology, 372, 76-83. doi: 10.1016/j.powtec.2020.05.096
The effect of sodium hydrosulfide on molybdenite flotation as a depressant of copper sulfides
Chen, Yang, Chen, Xumeng and Peng, Yongjun (2020). The effect of sodium hydrosulfide on molybdenite flotation as a depressant of copper sulfides. Minerals Engineering, 148 106203, 106203. doi: 10.1016/j.mineng.2020.106203
Chen, Xumeng, Liu, Sunfangze and Peng, Yongjun (2020). A new approach to selectively reject naturally hydrophobic gangue in the flotation of base metal sulphide minerals. Mining, Metallurgy and Exploration, 38 (2), 713-720. doi: 10.1007/s42461-020-00365-9
The effect of saline water on the settling of coal slurry and coal froth
Zhang, Na, Chen, Xumeng, Nicholson, Timothy and Peng, Yongjun (2019). The effect of saline water on the settling of coal slurry and coal froth. Powder Technology, 344, 161-168. doi: 10.1016/j.powtec.2018.12.036
Chang, Ziyong, Chen, Xumeng and Peng, Yongjun (2019). The interaction between diesel and surfactant Triton X-100 and their adsorption on coal surfaces with different degrees of oxidation. Powder Technology, 342, 840-847. doi: 10.1016/j.powtec.2018.10.047
Liu, Shiqi, Chen, Xumeng, Lauten, Rolf A., Peng, Yongjun and Liu, Qi (2018). Mitigating the negative effects of clay minerals on gold flotation by a lignosulfonate-based biopolymer. Minerals Engineering, 126, 9-15. doi: 10.1016/j.mineng.2018.06.021
The effect of froth on the dewatering of coals – an oscillatory rheology study
Zhang, Na, Chen, Xumeng, Nicholson, Timothy and Peng, Yongjun (2018). The effect of froth on the dewatering of coals – an oscillatory rheology study. Fuel, 222, 362-369. doi: 10.1016/j.fuel.2018.02.168
The role of sodium sulfide in the flotation of pyrite depressed in chalcopyrite flotation
Cao, Zhao, Chen, Xumeng and Peng, Yongjun (2018). The role of sodium sulfide in the flotation of pyrite depressed in chalcopyrite flotation. Minerals Engineering, 119, 93-98. doi: 10.1016/j.mineng.2018.01.029
The effect of saline water on the critical degree of coal surface oxidation for coal flotation
Chang, Ziyong, Chen, Xumeng and Peng, Yongjun (2018). The effect of saline water on the critical degree of coal surface oxidation for coal flotation. Minerals Engineering, 119, 222-227. doi: 10.1016/j.mineng.2018.01.020
Managing clay minerals in froth flotation—a critical review
Chen, Xumeng and Peng, Yongjun (2018). Managing clay minerals in froth flotation—a critical review. Mineral Processing and Extractive Metallurgy Review, 39 (5), 1-19. doi: 10.1080/08827508.2018.1433175
Chang, Ziyong, Chen, Xumeng and Peng, Yongjun (2018). The adsorption behavior of surfactants on mineral surfaces in the presence of electrolytes - A critical review. Minerals Engineering, 121, 66-76. doi: 10.1016/j.mineng.2018.03.002
The effect of amorphous silica on pulp rheology and copper flotation
Chen, Xumeng, Hadde, Enrico, Liu, Shiqi and Peng, Yongjun (2017). The effect of amorphous silica on pulp rheology and copper flotation. Minerals Engineering, 113, 41-46. doi: 10.1016/j.mineng.2017.08.001
Understanding and improving the flotation of coals with different degrees of surface oxidation
Chang, Ziyong, Chen, Xumeng and Peng, Yongjun (2017). Understanding and improving the flotation of coals with different degrees of surface oxidation. Powder Technology, 321, 190-196. doi: 10.1016/j.powtec.2017.08.025
Chen, Xumeng, Chang, Ziyong and Peng, Yongjun (2017). Predicting the degree of surface oxidation on fine coals by measuring the oxygen transfer rate in coal suspensions. Fuel Processing Technology, 159, 313-319. doi: 10.1016/j.fuproc.2017.01.044
The flotation of aluminosilicate polymorphic minerals with anionic and cationic collectors
Jin, Junxun, Gao, Huimin, Chen, Xumeng, Peng, Yongjun and Min, Fanfei (2016). The flotation of aluminosilicate polymorphic minerals with anionic and cationic collectors. Minerals Engineering, 99, 123-132. doi: 10.1016/j.mineng.2016.08.005
The separation of kyanite from quartz by flotation at acidic pH
Jin, Junxun, Gao, Huimin, Chen, Xumeng and Peng, Yongjun (2016). The separation of kyanite from quartz by flotation at acidic pH. Minerals Engineering, 92, 221-228. doi: 10.1016/j.mineng.2016.03.022
The effect of regrind mills on the separation of chalcopyrite from pyrite in cleaner flotation
Chen, Xumeng and Peng, Yongjun (2015). The effect of regrind mills on the separation of chalcopyrite from pyrite in cleaner flotation. Minerals Engineering, 83, 33-43. doi: 10.1016/j.mineng.2015.08.008
Chen, Xumeng, Seaman, David, Peng, Yongjun and Bradshaw, Dee (2014). Importance of oxidation during regrinding of rougher flotation concentrates with a high content of sulfides. Minerals Engineering, 66 (7), 165-172. doi: 10.1016/j.mineng.2014.04.014
The separation of chalcopyrite and chalcocite from pyrite in cleaner flotation after regrinding
Chen, Xumeng, Peng, Yongjun and Bradshaw, Dee (2014). The separation of chalcopyrite and chalcocite from pyrite in cleaner flotation after regrinding. Minerals Engineering, 58 (1-4), 64-72. doi: 10.1016/j.mineng.2014.01.010
The effect of particle breakage mechanisms during regrinding on the subsequent cleaner flotation
Chen, Xumeng, Peng, Yongjun and Bradshaw, Dee (2014). The effect of particle breakage mechanisms during regrinding on the subsequent cleaner flotation. Minerals Engineering, 66, 157-164. doi: 10.1016/j.mineng.2014.04.020
Effect of regrinding conditions on pyrite flotation in the presence of copper ions
Chen, Xumeng, Peng, Yongjun and Bradshaw, Dee (2013). Effect of regrinding conditions on pyrite flotation in the presence of copper ions. International Journal of Mineral Processing, 125, 129-136. doi: 10.1016/j.minpro.2013.08.007
Precipitation supramolecular complex for photoinduced anisotropic material with dual mesogenic units
Chen, Xumeng, Lu, Xuemin, Cui, Kun, Cui, Wei, Wu, Jun and Lu, Qinghua (2011). Precipitation supramolecular complex for photoinduced anisotropic material with dual mesogenic units. Polymer, 52 (14), 3243-3250. doi: 10.1016/j.polymer.2011.02.023
Lu, Xuemin, Xiao, Sufang, Chen, Xumeng and Lu, Qinghua (2011). A photosensitive fluorinated ionic complex with tunable surface wetting properties: Mesostructure and photosensitivity. Polymer Chemistry, 2 (11), 2528-2535. doi: 10.1039/c1py00236h
Fluorescent nanoparticles assembled from poly(ionic liquid) for selective sensing of copper ions
Cui, Kun, Lu, Xuemin, Cui, Wei, Wu, Jun, Chen, Xumeng and Lu, Qinghua (2011). Fluorescent nanoparticles assembled from poly(ionic liquid) for selective sensing of copper ions. Chemical Communications, 47 (3), 920-922. doi: 10.1039/c0cc03900d
Application of ionic self-assembly in preparation of azobenzene photoresposive materials
Xumeng, Chen, Xuemin, Lu and Qinghua, Lu (2010). Application of ionic self-assembly in preparation of azobenzene photoresposive materials. Progress in Chemistry, 22 (6), 1125-1132.
Effect of regrinding conditions on the flotation of sulphide minerals in the cleaner stage
Chen, Xumeng, Peng, Yongjun and Bradshaw, Dee (2014). Effect of regrinding conditions on the flotation of sulphide minerals in the cleaner stage. XXVII International Mineral Processing Congress -IMPC 2014, Santiago, Chile, 20-24 October 2014. Santiago, Chile: Gecamin Digital Publications.
Effect of particle breakage mechanisms during regrinding on surface chemistry and mineral flotation
Chen, X., Bradshaw, D. and Peng, Y. (2013). Effect of particle breakage mechanisms during regrinding on surface chemistry and mineral flotation. Flotation'13: The 6th International Flotation Conference, Cape Town, South Africa, 18-21 November, 2013.
Importance of oxidation during regrinding of rougher concentrate with a high content of sulphides
Chen, X., Bradshaw, D., Seaman, D. and Peng, Y. (2013). Importance of oxidation during regrinding of rougher concentrate with a high content of sulphides. Flotation'13: The 6th International Flotation Conference, Cape Town, South Africa, 18-21 November, 2013.
Chen, X., Peng, Y. and Bradshaw, D. J. (2012). Effect of regrinding conditions on the flotation of chalcopyrite and its separation from pyrite in the cleaner stage. 11th AusIMM Mill Operators' Conference 2012, Hobart, Tasmania, 29-31 October 2012. Carlton, Victoria: AusIMM: Australasian Institute of Mining and Metallurgy.
Effect of regrinding conditions on the rejection of pyrite in the cleaner stage
Chen, Xumeng, Peng, Yongjun and Bradshaw, Dee J. (2012). Effect of regrinding conditions on the rejection of pyrite in the cleaner stage. XXVI International Mineral Processing Congress - IMPC 2012, New Delhi, India, 24-28 September 2012. New Delhi, India: Technowrites.
Peng, Y., Liu, D. and Chen, X. (2012). Selective flotation of ultrafine nickel sulphide from serpentine in saline water by pluronic triblock copolymer. XXVI International Mineral Processing Congress - IMPC 2012, New Delhi, India, 24-28 September 2012. New Delhi, India: International Mineral Processing Congress.
The effect of regrinding chemistry and particle breakage mechanisms on subsequent cleaner flotation
Chen, Xumeng (2015). The effect of regrinding chemistry and particle breakage mechanisms on subsequent cleaner flotation. PhD Thesis, Sustainable Minerals Institute, The University of Queensland. doi: 10.14264/uql.2015.632
Improving Mineral, Coal and Oil Processing by De-aerating Persistent Froth
(2021–2027) Global Innovation Linkages
(2021–2023) Australian Coal Association Research Program
(2021–2023) Australian Coal Association Research Program
Mitigating negative effects of process water on flotation of Lihir ores
(2021–2022) Lihir Gold Limited
Developing on-line oxidation measurement for remote operation of coal mines during pandemic
(2020–2022) Advance Queensland Industry Research Fellowships
Developing Operator Friendly Coal Oxidation Measurement
(2020–2021) Australian Coal Research Limited
Developing a frother decision tree for Australian coal flotation plants.
(2019–2021) Australian Coal Association Research Program
(2019–2021) Australian Coal Association Research Program
Developing and implementing new chemistries to effectively recover fine coals
(2017–2020) Advance Queensland Research Fellowships
Oxidation monitoring tools and new reagents in plants to improve the flotation of oxidised coals
(2017–2018) Australian Coal Association Research Program
Chemical deaeration of overly stable coal froth
(2022) Doctor Philosophy — Associate Advisor
Other advisors:
(2022) Doctor Philosophy — Associate Advisor
Other advisors:
Diesel emulsification for coal flotation in saline water
(2021) Master Philosophy — Associate Advisor
Other advisors:
The emulsification of diesel and the hydrophobization of coal surfaces by frother surfactants
(2021) Doctor Philosophy — Associate Advisor
Other advisors:
The selective flotation of molybdenite in seawater
(2021) Doctor Philosophy — Associate Advisor
Other advisors:
(2020) Doctor Philosophy — Associate Advisor
Other advisors:
The effect of grinding media on pyrite flotation
(2020) Master Philosophy — Associate Advisor
Other advisors:
Improvement of oxidized coal flotation in fresh water and saline water
(2018) Doctor Philosophy — Associate Advisor
Other advisors: