3892c343-4dd1-49c5-8c23-9355d2f4d68b Alumina production ; Alumina for metallurgy ; Combined process ; Bauxite 氧化铝生产 ; 冶金用氧化铝 ; 联合法 ; 铝土矿 Unit processes Materials production Non-energetic raw materials 氧化铝排放（烧结-铺层组合工艺） ; 原生铝生产 12 Alumina for metallurgy, produced through the combined process from bauxite, is primarily used for the extraction of primary aluminum. The substance is processed in a single operation within the aluminum production units utilizing a sintering-layering combination technique. 冶金用氧化铝通过联合工艺从铝土矿生产，主要用于提取原生铝。该物质在使用烧结-铺层组合技术的铝生产单元中，通过单一操作过程进行加工。 BTQrbyXk8oocBWxIadgclE5UnWd.png Unit process, single operation None 无 None 无 None 无 None 无 None 无 YANG, Y., GUO, Y.-Q., ZHU, W.-S. & HUANG, J.-B. Environmental impact assessment of China’s primary aluminum based on life cycle assessment. Trans Nonferrous Met Soc China 29, 1784–1792 (2019). YANG, Y., GUO, Y.-Q., ZHU, W.-S. & HUANG, J.-B. Environmental impact assessment of China’s primary aluminum based on life cycle assessment. Trans Nonferrous Met Soc China 29, 1784–1792 (2019). Users of this data should consider the specific technological context of alumina production for metallurgical purposes. Attention should be paid to the integrated sintering-layering process when utilizing this data for life cycle assessments or other environmental impact studies. Ensure that the data is applied only to scenarios relevant to primary aluminum production and that any emissions data or energy use is consistent with the sintering-layering combination process. 使用这些数据的用户应考虑冶金用途氧化铝生产的特定技术背景。在利用这些数据进行生命周期评估或其他环境影响研究时，应注意烧结-铺层组合工艺的整合。确保数据仅适用于与原生铝生产相关的情景，并且任何排放数据或能源使用与烧结-铁层组合过程一致。 Inventory: The internal review was done by several iteration steps concerning raw data validation, raw data documentation, representativity, completeness and consistency of modelling with regard to ISO 14040 and 14044. 清单： 内部审查通过几个迭代步骤完成，涉及原始数据验证、原始数据记录、代表性、完整性、与 ISO 14040 和 14044 有关的建模的一致性。 Tiangong LCI Data Working Group 天工LCI数据工作小组 Chenling Fu, fu-chenling@tsinghua.edu.cn 傅晨玲, fu-chenling@tsinghua.edu.cn fu-chenling@tsinghua.edu.cn fu-chenling@tsinghua.edu.cn 2024-01-10T09:04:38+08:00 2024-04-20T15:31:00.111724+08:00 00.01.005 https://lcadata.tiangong.world/showProcess.xhtml?uuid=3892c343-4dd1-49c5-8c23-9355d2f4d68b&version=01.00.000&stock=TianGong Tiangong LCI Data Working Group 天工LCI数据工作小组 false Free of charge for all users and uses electricity, high voltage, aluminium industry Input 1040.4 1040.4 sodium hydroxide, without water, in 50% solution state Input 33.7 33.7 NaOH limestone, crushed, for mill Input 0.25 0.25 sulfur dioxide Output 0.16 0.16 Nitrogen oxides Output 0.17 0.17 particles, unspecified Output 0.37 0.37 natural gas, high pressure Input 85.0 85.0 natural gas bauxite Input 2410.0 2410.0 sodium carbonate Input 210.0 210.0 NaCO3 water Input 3460.0 3460.0 steam, in chemical industry Input 2800.0 2800.0 natural gas, high pressure Input 110.0 110.0 aluminium oxide, metallurgical Output 1000.0 1000.0 carbon dioxide (fossil),carbon dioxide (fossil) Output 1230.0 1230.0 redmud from bauxite digestion Output 1300.0 1300.0 methane (fossil) Output 0.0049900000000000005 0.0049900000000000005