3517a142-304c-42d8-bd19-83ac87efe846 Rare Earth Elements (REE) leachate production;Rare Earth Elements (REE);Solvent extraction;ion adsorption clay 稀土元素渗滤液生产;稀土元素;溶剂萃取;离子吸附粘土 Unit processes Materials production Inorganic chemicals The rare earth elements (REE) leachate production through solvent extraction and ion adsorption from clay is primarily used in the production of individual rare earth ions, which are subsequently used in various high-technology applications, including electronics, magnets, ceramics, and as catalysts in the chemical industry. The process efficiently separates heavy, medium, and light rare earth ions for the creation of high-purity (>99%) rare earth solutions required in these advanced applications. 稀土元素渗滤液生产通过溶剂萃取和离子吸附粘土主要用于生产单独的稀土离子，随后用于各种高科技应用，包括电子产品、磁体、陶瓷以及作为化学工业中的催化剂。该工艺有效地分离重稀土离子、中稀土离子和轻稀土离子，用于这些先进应用中所需的高纯度（>99%）稀土溶液的创造。 One ton of rare earth chloride aqueous solution processed at a solvent extraction facility in China to produce individual rare earth carbonates was defined as the functional unit. 40 2015 Fujian province 福建省 After the leaching step, using solvent extraction processes, the metal ion solution is separated into heavy, medium, and light rare earth ions. In addition, due to the ability to handle larger volumes of dilute pregnant solutions in industrial scale, solvent extraction has become the common practice to separate individual rare earth ions. It is worth mentioning that since the separation techniques are according to the variation in the potential of complex formation between the extractants (organic solvents) and the rare earth ions, the separation of neighboring rare earth ions by applying traditional solvent extraction approaches is laborious. Moreover, the presence of significant amount of radioactive elements such as thorium and to a marginal level uranium in primary REE resources and co-extraction of these elements make the REE production process more challenging. Additional solvent extraction steps are also mandatory to produce solutions of individual rare earths with purity higher than 99% 浸出步骤后，使用溶剂萃取工艺，将金属离子溶液分离成重稀土离子、中稀土离子和轻稀土离子。此外，由于能够在工业规模上处理大量稀母液，溶剂萃取已成为分离单个稀土离子的常见做法。值得一提的是，由于分离技术是根据萃取剂（有机溶剂）与稀土离子之间形成络合物的潜力的变化而设计的，因此采用传统的溶剂萃取方法分离相邻的稀土离子是费力的。此外，初级稀土元素资源中存在大量放射性元素（例如钍）和微量铀，以及这些元素的共提取使得稀土元素生产过程更具挑战性。为了生产纯度高于 99% 的各种稀土溶液，还必须进行额外的溶剂萃取步骤 The rare earth elements (REE) leachate production through solvent extraction and ion adsorption from clay is primarily used in the production of individual rare earth ions, which are subsequently used in various high-technology applications, including electronics, magnets, ceramics, and as catalysts in the chemical industry. The process efficiently separates heavy, medium, and light rare earth ions for the creation of high-purity (>99%) rare earth solutions required in these advanced applications. 稀土元素渗滤液生产通过溶剂萃取和离子吸附粘土主要用于生产单独的稀土离子，随后用于各种高科技应用，包括电子产品、磁体、陶瓷以及作为化学工业中的催化剂。该工艺有效地分离重稀土离子、中稀土离子和轻稀土离子，用于这些先进应用中所需的高纯度（>99%）稀土溶液的创造。 UFIvbPeEpoZGDkxE6bEc39iDnAc.png LCI result Attributional None 无 Allocation - market value None 无 None 无 None 无 None 无 Vahidi, E. & Zhao, F. Environmental life cycle assessment on the separation of rare earth oxides through solvent extraction. Journal of Environmental Management 203, 255–263 (2017). Vahidi, E. & Zhao, F. Environmental life cycle assessment on the separation of rare earth oxides through solvent extraction. Journal of Environmental Management 203, 255–263 (2017). When using this dataset for Life Cycle Assessment, consider the following: - This dataset is specific to solvent extraction facilities in Fujian province, China, and may not be representative of all solvent extraction processes globally. - Pay attention to the substantial radioactive element content, especially thorium and uranium, that might be found in primary REE resources which affects the environmental impact assessment. - Additional purification steps for achieving >99% purity in individual rare earth solutions must be included in the impact assessment. - The separation of adjacent rare earth ions may involve complex extractants' behaviors which should be modeled carefully in the LCA process. 在使用此数据集进行生命周期评估时，请考虑以下事项： - 该数据集特定于中国福建省的溶剂萃取设施，可能不代表全球所有溶剂萃取过程。 - 注意到初级稀土资源中可能存在的大量放射性元素，尤其是钍和铀，这影响了环境影响评估。 - 必须在影响评估中包括额外的纯化步骤，以实现个别稀土溶液中超过99%的纯度。 - 相邻稀土离子的分离可能涉及复杂萃取剂的行为，这在生命周期评估过程中应谨慎建模。 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 2024-04-19T20:27:13+08:00 2024-04-20T15:07:20.914683+08:00 00.01.005 https://lcadata.tiangong.world/showProcess.xhtml?uuid=3517a142-304c-42d8-bd19-83ac87efe846&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 Barium chloride Input 57.74 57.74 Calculated Barium chloride Barium chloride Electricity Input 1460.0 1460.0 Calculated sodium hydroxide Input 2618.3 2618.3 Calculated Hydrochloric acid Input 5701.0 5701.0 Calculated Hydrochloric acid Hydrochloric acid oxalic acid Input 433.0 433.0 Calculated natural gas,natural gas,natural gas Input 38690.0 38690.0 Calculated Natural gas Natural gas Sodium carbonate Input 315.0 315.0 Calculated Soda ash Soda ash Sulfonated kerosene Input 18.6 18.6 Calculated Sulfonated kerosene Sulfonated kerosene Naphthenic acid Input 8.5 8.5 Calculated Naphthenic acid Naphthenic acid Disooctyl Phosphate (P204) Input 13.8 13.8 Calculated P204 P204 2-Ethylhexanol Input 18.6 18.6 Calculated 2-Ethylhexanol 2-Ethylhexanol water Input 30.84 30.84 Calculated Lanthanum oxidation Output 149.0 149.0 Calculated Lanthanum oxidation Lanthanum oxidation Cerium oxide Output 16.0 16.0 Calculated Cerium oxide Cerium oxide Praseodymium oxide Output 33.0 33.0 Calculated Praseodymium oxide Praseodymium oxide Neodymium oxalate Output 121.0 121.0 Calculated Neodymium oxide Neodymium oxide Samarium oxide Output 26.0 26.0 Calculated Samarium oxide Samarium oxide Gadolinium oxide Output 25.0 25.0 Calculated Gadolinium oxide Gadolinium oxide Dysprosium oxide Output 19.0 19.0 Calculated Dysprosium oxide Dysprosium oxide Erbium oxide Output 10.0 10.0 Calculated Erbium oxide Erbium oxide Ytterbium oxide Output 10.0 10.0 Calculated Ytterbium oxide Ytterbium oxide Yttrium oxide Output 125.0 125.0 Calculated Yttrium oxide Yttrium oxide Metal Oxide Output 13.0 13.0 Calculated EuO, Tb4O7, HoO, TmO, LuO EuO, Tb4O7, HoO, TmO, LuO Low radioactive wastes Output 58.98 58.98 Calculated hazardous waste (unspecified),hazardous waste (unspecified) Output 1.47 1.47 Calculated Sludge Output 1.17 1.17 Calculated municipal waste (unspecified) Output 2.9 2.9 Calculated waste water - untreated Output 29.47 29.47 Calculated chemical oxygen demand Output 2.67 2.67 Calculated ammonia,ammonia Output 0.17 0.17 Calculated chlorine Output 6.97 6.97 Calculated Chlorine ion Chlorine ion Oils, unspecified Output 0.02 0.02 Calculated Suspended solids, unspecified,Suspended solids, unspecified Output 0.44 0.44 Calculated hydrogen chloride Output 0.00763 0.00763 Calculated carbon dioxide (fossil) Output 2101.3 2101.3 Calculated 原文未区分bio和fossil，根据专家判断此处为fossil chlorine Output 0.00117 0.00117 Calculated hydrocarbons (unspecified) Output 0.0129 0.0129 Calculated sulfur dioxide Output 0.00881 0.00881 Calculated particles (> PM10),particles (> PM10),particles (>PM10) Output 0.0522 0.0522 Calculated Particulates Particulates Nitrogen oxides Output 1.27 1.27 Calculated Nitrogen oxide Nitrogen oxide Rare Earth chloride solution Output 1000.0 1000.0 Calculated