de34870a-c925-4020-934b-27687f2ca907 Rare earth filtrate precipitation and HCl leaching;Dysprosium;Ion adsorption clay (IAC);Rare Earth Elements (REE) containing ore 稀土滤液沉淀及HCl浸出;镝;IAC;含稀土元素矿石 Unit processes Materials production Inorganic chemicals The technical use of the process involves the production of Dysprosium (Dy) through the precipitation of rare earth elements from a filtrate and subsequent leaching with hydrochloric acid (HCl). This process is specific to the extraction and refinement of dysprosium from REE containing ores in Southern China and Bayan Obo regions. Dysprosium is a rare earth element commonly used in permanent magnets, which are essential components of modern electronics, electric vehicles, and wind-turbine generators, among other high-tech applications. 该工艺的技术用途涉及通过从滤液中沉淀稀土元素以及随后的盐酸（HCl）浸出来生产镝（Dy）。这个过程专门用于从华南地区和白云鄂博地区含稀土元素矿石中提取和精炼镝。镝是一种常用于永磁体的稀土元素，是现代电子产品、电动车辆和风力发电机等高科技应用中不可缺少的组成部分。 The goal of this investigation is to compare environmental impacts related to the production of 1 kg Dy (functional unit) from IAC (Southern China), from B/M ore (Bayan Obo), and from an eudialyte deposit (Norra Kärr) using the LCA method 16 2010 2019 Southern China and Bayan Obo 华南地区和白云鄂博 The goal of this investigation is to compare environmental impacts related to the production of 1 kg Dy (functional unit) from IAC (Southern China), from B/M ore (Bayan Obo), and from an eudialyte deposit (Norra Kärr) using the LCA method 本次调查的目的是比较 IAC（中国南方）、B/M 矿石（白云鄂博）和 eudialyte 矿床（Norra Kärr）生产 1 千克镝（功能单位）的环境影响，使用生命周期分析法 The technical use of the process involves the production of Dysprosium (Dy) through the precipitation of rare earth elements from a filtrate and subsequent leaching with hydrochloric acid (HCl). This process is specific to the extraction and refinement of dysprosium from REE containing ores in Southern China and Bayan Obo regions. Dysprosium is a rare earth element commonly used in permanent magnets, which are essential components of modern electronics, electric vehicles, and wind-turbine generators, among other high-tech applications. 该工艺的技术用途涉及通过从滤液中沉淀稀土元素以及随后的盐酸（HCl）浸出来生产镝（Dy）。这个过程专门用于从华南地区和白云鄂博地区含稀土元素矿石中提取和精炼镝。镝是一种常用于永磁体的稀土元素，是现代电子产品、电动车辆和风力发电机等高科技应用中不可缺少的组成部分。 QJkUbU1xqovftbx6brScvVp2njb.png Unit process, single operation Attributional None 无 Allocation - mass In this study, an allocation method based on the mass of produced REEs combined with their market prices (based on an international metals market analysis and pricing index company ) are considered, as usual for metals with strongly different prices. As the ores have different compositions, the allocation factor has to be assessed individually for each site. None 无 None 无 None 无 None 无 Zapp, P., Marx, J., Schreiber, A., Friedrich, B. & Voßenkaul, D. Comparison of dysprosium production from different resources by life cycle assessment. Resources, Conservation and Recycling 130, 248–259 (2018). Zapp, P., Marx, J., Schreiber, A., Friedrich, B. & Voßenkaul, D. Comparison of dysprosium production from different resources by life cycle assessment. Resources, Conservation and Recycling 130, 248–259 (2018). When using this data in Life Cycle Assessment (LCA), it is important to consider the allocation method based on the mass of produced Rare Earth Elements (REEs) along with their market prices. Environmental impacts should be compared for the production of 1 kg Dysprosium across different sources, including IAC (Southern China), B/M ore (Bayan Obo), and eudialyte (Norra Kärr). Due to varying compositions of the ores, the allocation factor must be assessed individually for each site. It is also necessary to account for site-specific technological applicability and processing efficiencies in the LCA model. 在使用这些数据进行生命周期评估（LCA）时，重要的是考虑基于生产的稀土元素（REEs）的质量以及它们的市场价格的分配方法。应该比较不同来源（包括中国南方的IAC、白云鄂博的B/M 矿石、Norra Kärr的eudialyte）生产1公斤镝的环境影响。由于矿石成分各异，必须为每个地点单独评估分配因子。在LCA模型中，还必须考虑地点特定的技术适用性和处理效率。 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.cn twang@iue.ac.cn twang@iue.ac.cn 2024-01-04T18:04:08+08:00 2024-04-20T15:07:16.844169+08:00 00.01.005 https://lcadata.tiangong.world/showProcess.xhtml?uuid=de34870a-c925-4020-934b-27687f2ca907&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 Input 1.62 1.62 Calculated Estimated on base of throughput in solvent extractio, electricity mix 2014 Estimated on base of throughput in solvent extractio, electricity mix 2014 Ammonium bicarbonate Input 5.4 5.4 Calculated Ammonium bicarbonate. Stoichiometric calculation with 25 % excess, ammonium bicarbonate, at plant Ammonium bicarbonate. Stoichiometric calculation with 25 % excess, ammonium bicarbonate, at plant sulphuric acid Input 0.66 0.66 0.26 1.06 Measured uniform For adjusting a pH value of 5 for further processing, sulphuric acid, liquid, at plant. Average For adjusting a pH value of 5 for further processing, sulphuric acid, liquid, at plant. Average Lime Input 1.885 1.885 0.74 3.03 Measured uniform Lime production, hydrated, packe, for adjusting a pH value of 10 to separate impurities. Average Lime production, hydrated, packe, for adjusting a pH value of 10 to separate impurities. Average hydrogen chloride Input 11.48 11.48 Measured Hydrochloric acid, 36 % in H2O, from reacting propylene and chlorine, for adjusting a pH value of 4 for REE chloride solution Hydrochloric acid, 36 % in H2O, from reacting propylene and chlorine, for adjusting a pH value of 4 for REE chloride solution water Input 197.0 197.0 Measured For dilution of HCl For dilution of HCl transport in t*km,transport in t*km Input 2.565 2.565 2.07 3.06 uniform Chemicals: 320 km average distance deposit -Guangzhou, carbonate: 200 km deposit - Shaoguan, HCl: 230 km Guangzhou - Shaoguan. Market for transport, freight, lorry >32 metric ton, EURO3, average Chemicals: 320 km average distance deposit -Guangzhou, carbonate: 200 km deposit - Shaoguan, HCl: 230 km Guangzhou - Shaoguan. Market for transport, freight, lorry >32 metric ton, EURO3, average Sludge Output 5.14 5.14 Unknown derivation Assumed to be dumped at the deposit area Assumed to be dumped at the deposit area aluminium Output 0.000146 0.000146 Measured Aluminium [Inorganic emissions to fresh water] Aluminium [Inorganic emissions to fresh water] calcium Output 0.000808 0.000808 Measured Calcium [Inorganic emissions to fresh water] Calcium [Inorganic emissions to fresh water] iron Output 1.7e-06 1.7e-06 Measured Iron [Heavy metals to fresh water] Iron [Heavy metals to fresh water] magnesium Output 7.07e-05 7.07e-05 Measured Magnesium [Inorganic emissions to fresh water] Magnesium [Inorganic emissions to fresh water] manganese Output 2.31e-05 2.31e-05 Measured Manganese [Heavy metals to fresh water Manganese [Heavy metals to fresh water potassium Output 6.72 6.72 Measured Potassium [Inorganic emissions to fresh water] Potassium [Inorganic emissions to fresh water] Activated silica Output 0.000147 0.000147 Measured Activated silica. Silicon dioxide (silica) [Particles to air] Activated silica. Silicon dioxide (silica) [Particles to air] sodium Output 0.000105 0.000105 Measured Sodium [Inorganic emissions to fresh water] Sodium [Inorganic emissions to fresh water] Leaching solution Output 208.0 208.0 Measured Leaching solution. Input for next process: Solvent extraction Leaching solution. Input for next process: Solvent extraction