"Wrought and cast aluminum flows in China in the context of electric vehicle diffusion and automotive lightweighting
"Wrought and cast aluminum flows in China in the context of electric vehicle diffusion and automotive lightweighting
复制标题
“在电动汽车普及和汽车轻量化的背景下，中国的锻铝和铸铝流动
DOI：
10.1016/j.resconrec.2023.106877
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Kazuyo Matsubae
中科院分区：
文献类型：
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作者：
Binze Wang;Zhengyang Zhang;Guochang Xu;Xianlai Zeng;Wentao Hu;Kazuyo Matsubae
电气化和车辆轻量化趋势正在推动对变形铝合金的需求。鉴于铝废料目前被降级，因为它被回收到铸造铝合金，铝周期的不平衡预计会发生。利用物质流分析方法，通过区分我国铝合金的种类，识别出了二次铝流。考虑到先进回收技术的采用以及电动汽车和汽车轻量化的趋势，我们还估计了汽车对锻造和铸造合金的需求变化，沿着铝废料的产生，以及汽车中原铝用量的减少。结果显示，在管理良好的汽车回收系统中，2019年有可能回收约87 - 183 kt的锻造合金，2050年约为1，054 - 7，152 kt，从而在2019年至2050年期间将汽车生产所需的原铝锭数量减少10 - 37%。
Electrification and vehicle weight reduction (lightweighting) trends are driving demand for wrought aluminum alloys. Given that aluminum scrap is currently downgraded as it is recycled into cast aluminum alloys, an imbalance in aluminum cycles is predicted to occur. We identified secondary aluminum flows by distinguishing alloy type in China with material flow analysis. Considering the adoption of advanced recovery techniques and the trends towards greater use of electric vehicles and vehicle lightweighting, we also estimated changes in the automotive demand for wrought and cast alloys along with aluminum scrap generation, as well as the reduced amount of primary aluminum used in automobiles. The results revealed the potential to recycle about 87−183 kt of wrought alloys in 2019 and about 1,054−7,152 kt in 2050 within a well-managed vehicle recycling system, thereby reducing the amount of primary aluminum ingot required for automobile production by 10−37% between 2019 to 2050.