7892951e-a1e9-4ac1-b836-e4fbfef2a4bcRare Earth Flotation;Rare Earth;In-situ leaching;neodymium iron boron (NdFeB) magnet稀土浮选;稀土;原地浸出;钕铁硼（NdFeB）磁铁Unit processesMaterials productionMetals and semimetalsThe described process refers to the extraction and production of neodymium (Nd) and praseodymium (Pr) from the Bayan Obo deposit in China, which are essential components in the manufacture of high-performance neodymium iron boron (NdFeB) magnets. These magnets are commonly used in various applications such as wind turbines, electric vehicle motors, hard disk drives, and other electronics requiring strong permanent magnets.描述的工艺指的是从中国白云鄂博矿床中提取和生产钕（Nd）和镨（Pr），这些是制造高性能钕铁硼（NdFeB）磁铁的必要组分。这些磁铁通常用于风力涡轮机、电动车电机、硬盘驱动器以及其他需要强力永磁体的电子产品中。The functional unit is a 1 kg NdFeB magnet6Bayan Obo (China)The basic process for Nd and Pr production is the same at all three deposits. It is identical for Nd and Pr except for the last solvent extraction step (SX5) where both are separated.所有三个矿床生产 Nd 和 Pr 的基本过程都是相同的。 Nd 和 Pr 是相同的，除了最后的溶剂萃取步骤 (SX5)，其中两者被分离。The described process refers to the extraction and production of neodymium (Nd) and praseodymium (Pr) from the Bayan Obo deposit in China, which are essential components in the manufacture of high-performance neodymium iron boron (NdFeB) magnets. These magnets are commonly used in various applications such as wind turbines, electric vehicle motors, hard disk drives, and other electronics requiring strong permanent magnets.描述的工艺指的是从中国白云鄂博矿床中提取和生产钕（Nd）和镨（Pr），这些是制造高性能钕铁硼（NdFeB）磁铁的必要组分。这些磁铁通常用于风力涡轮机、电动车电机、硬盘驱动器以及其他需要强力永磁体的电子产品中。ZnSwbt4lSo9tUyxMvOZcijcJnSb.pngUnit process, single operationAttributionalNone无Allocation - market valueAllocation - massIn this study, an allocation method based on the market prices of REOs28 is considered. To estimate uncertainties that refer to the allocation method, a mass-based allocation is undertaken as a sensitivity analysisNone无None无None无None无Marx, J., Schreiber, A., Zapp, P. & Walachowicz, F. Comparative Life Cycle Assessment of NdFeB Permanent Magnet Production from Different Rare Earth Deposits. ACS Sustainable Chem. Eng. 6, 5858–5867 (2018).Marx, J., Schreiber, A., Zapp, P. & Walachowicz, F. Comparative Life Cycle Assessment of NdFeB Permanent Magnet Production from Different Rare Earth Deposits. ACS Sustainable Chem. Eng. 6, 5858–5867 (2018).When utilizing this data set for Life Cycle Assessment of NdFeB magnets, it is advised to use the market price-based allocation method for the production of Nd and Pr as the preferred approach. However, recognize the importance of conducting a sensitivity analysis using a mass-based allocation method to estimate uncertainties related to the allocation process. The results should be contextualized within the scope of your study, especially considering geographic and technological specificities. Keep in mind that the functional unit is defined as 1 kg of NdFeB magnet.在使用该数据集进行钕铁硼磁铁的生命周期评估时，建议使用基于市场价格的分配方法作为生产Nd和Pr的首选方法。但是，要认识到使用基于质量的分配方法进行敏感性分析以估计与分配过程相关的不确定性的重要性。结果应在研究范围内进行语境化，特别是考虑地理和技术特异性。请记住，功能单位被定义为1公斤的钕铁硼磁铁。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Tao Wang, twang@iue.ac.cn汪涛, twang@iue.ac.cntwang@iue.ac.cntwang@iue.ac.cn2023-12-17T22:58:19+08:002024-04-20T15:07:15.502825+08:0000.01.005https://lcadata.tiangong.world/showProcess.xhtml?uuid=7892951e-a1e9-4ac1-b836-e4fbfef2a4bc&version=01.00.000&stock=TianGongTiangong LCI Data Working Group天工LCI数据工作小组falseFree of charge for all users and usesElectricityInput4.26964.2696Calculated Bayan Obo: included in milling Bayan Obo: included in millingSodium silicateInput0.2060.206Calculated Sodium silicate. Bayan Obo: based on Metsc Sodium silicate. Bayan Obo: based on Metsc Fatty acid Input0.0860.086CalculatedFatty acid. Bayan OboFatty acid. Bayan OboChemicals organic,Chemicals, organic Input0.0750.075CalculatedChemicals, organic. Bayan Obo: precipitant unknownChemicals, organic. Bayan Obo: precipitant unknowntransport in t*km,transport in t*kmInput0.1340.134Measured Bayan Obo: lorry, organic chemicals 803 km, other chemicals 20 km, lorry, EURO3 Bayan Obo: lorry, organic chemicals 803 km, other chemicals 20 km, lorry, EURO3 tailings (unspecified)Output7132.07132.0Calculated Bayan Obo: calculation from experts of RWTH Aachen University Bayan Obo: calculation from experts of RWTH Aachen University Rare Earth concentrateOutput8.48.4Calculated RE concentrate. Bayan Obo: input for next process, Roasting RE concentrate. Bayan Obo: input for next process, Roasting