Environmental Impact of Remanufacturing Mining Machinery

Tomohisa Kanazawa, Mitsutaka Matsumoto, Mitsuhiro Yoshimoto and Kiyotaka Tahara
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Tomohisa Kanazawa: Remanufacturing Division, Hitachi Construction Machinery Co., Ltd., Tsuchiura 300-0013, Japan
Mitsutaka Matsumoto: Advanced Manufacturing Research Institute (AMRI), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8564, Japan
Mitsuhiro Yoshimoto: Remanufacturing Division, Hitachi Construction Machinery Co., Ltd., Tsuchiura 300-0013, Japan
Kiyotaka Tahara: Research Institute of Science for Safety and Sustainability (RISS), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8569, Japan

Sustainability, 2022, vol. 14, issue 13, 1-16

Abstract: In this study, we assessed the environmental impact of the remanufacturing of mining machinery components, by analyzing commonly used parts in a machine setup. No previous studies have conducted a detailed environmental impact assessment of any manufacturing processes for new or remanufactured components used in mining machinery. We analyzed the system boundaries and conducted inventory analysis to understand their function and determine their unit role in the machine. Then, we evaluated the environmental impacts of the manufacturing processes for the subparts and assy parts, along with the impact of logistic and remanufacturing processes. In particular, we assessed hydraulic equipment, which is a common component of mining machinery, and conducted a comparative assessment of the environmental impacts of new and remanufactured components. Our results indicated that the global warming potential (GWP) per mining machine throughout its lifecycle (LC) could be reduced by ~194 ton-CO 2 eq./LC. Assuming that the number of mining machinery in operation at a global scale is 571 machines (or units) per year, the GWP would be reduced by ~110,000 ton-CO 2 eq./year.

Keywords: sustainable development goals; circular economy; remanufacturing; life cycle assessment; mining machinery; hydraulic component; global warming potential; heavy-duty off-road (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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