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Micron-sized ore powder production by propulsion and rapid unloading of high-pressure gas

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Abstract

We describe a micron-sized ore powder production by propulsion and rapid unloading of high-pressure gas. The research consists of three parts. Firstly, we obtain the tensile strength parameters and permeability coefficient based on the experiment. Secondly, gas propulsion pressure and gas infiltration pressure of the powdering experiment are confirmed. Thirdly, the ore will be fragmented into micron-sized powder when rapid unloading occurs. The grain size analysis indicates that more particles with smaller sizes are obtained at a higher propulsion gas pressure. Particles less than 0.147 mm obtained at the 65 MPa gas propulsion pressure account for 63% of the sample. The critical gas propulsion pressure is determined to be 55 MPa when the volume ratio is 1:3. Powdering experiments show that this method is suitable for metallic and non-metallic ores.

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Acknowledgements

The authors would like to sincerely thank Guo WX and Liu HQ for their help with the laboratory equipment. We are grateful for the support by the National Key Research and Development Project (2018YFC1505504) and the National Natural Science Foundation of China (11802313).

Funding

The work presented in this paper was supported by the National Key Research and Development Project (2018YFC1505504) and the National Natural Science Foundation of China (11802313).

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Authors and Affiliations

  1. Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China

    Fan Yongbo, Qiao Jiyan, Li Shihai & Feng Chun

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  1. Fan Yongbo
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  2. Qiao Jiyan
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  3. Li Shihai
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  4. Feng Chun
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Correspondence to Fan Yongbo.

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Yongbo, F., Jiyan, Q., Shihai, L. et al. Micron-sized ore powder production by propulsion and rapid unloading of high-pressure gas. J Aust Ceram Soc 57, 1489–1497 (2021). https://doi.org/10.1007/s41779-021-00654-6

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  • DOI: https://doi.org/10.1007/s41779-021-00654-6

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