Assessment of energy conservation potential and cost in open-pit metal mines: Bottom-up approach integrated energy conservation supply curve and ultimate pit limit

被引:5
作者
Liu, Yang [1 ,2 ]
Zhang, Congrui [1 ,2 ]
Xu, Xiaochuan [3 ]
Ge, Yongxiang [1 ]
Ren, Gaofeng [1 ,2 ]
机构
[1] Wuhan Univ Technol, Sch Resource & Environm Engn, Wuhan 430070, Peoples R China
[2] Wuhan Univ Technol, Key Lab Mineral Resources Proc & Environm Hubei P, Wuhan 430070, Peoples R China
[3] Northeastern Univ, Sch Resources & Civil Engn, Shenyang 110819, Liaoning, Peoples R China
基金
中国国家自然科学基金;
关键词
Metal mining; Energy conservation; Greenhouse gas emission; Conservation supply curve; Ultimate pit limit; GREENHOUSE-GAS EMISSIONS; EFFICIENCY IMPROVEMENT; CARBON EMISSION; CHINA; STEEL; IRON; REDUCTION; BENEFITS; MITIGATION; ABATEMENT;
D O I
10.1016/j.enpol.2022.112809
中图分类号
F [经济];
学科分类号
02 ;
摘要
Mitigating energy consumption and greenhouse gas (GHG) emissions in the metal mining industry heavily depends on the employment of energy conservation technologies in each individual metal mine. However, predicting the energy conservation potential and associated cost for a specific mine is difficult, especially considering the interaction between technology employment and open-pit limit variation. Therefore, this study integrates the conventional energy conservation-supply-curve (CSC) approach with the ultimate-pit-limit (UPL) analysis in the estimation of energy conservation potential and cost due to technology application. The results from the case study show that conventional CSC analysis provides overestimated potential with underestimated cost under market-based promotion policy. On the other hand, a target-responsibility-system-based (TRS-based) provides underestimated potential with overestimated cost. Sensitivity analysis shows that energy price has the largest impact on the energy conservation potential and associated cost. The policies that raise energy and carbon prices contribute not only to mitigating energy consumption, but also to reducing associated costs, even though they are accompanied by a reduction in mineral supply. This study suggests that the policy that subsidizes conserved energy should be integrated with a TRS-based policy to mitigate the elimination of energy conservation potential due to expansion of the open-pit limit.
引用
收藏
页数:12
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