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Process Data set: Rare Earth Flotation;Rare Earth;In-situ leaching;neodymium iron boron (NdFeB) magnet (en) en zh

Key Data Set Information
Location NMG-CN
Geographical representativeness description Bayan Obo (China)
Reference year 2014
Name
Rare Earth Flotation;Rare Earth;In-situ leaching;neodymium iron boron (NdFeB) magnet
Use advice for data set 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.
Technical purpose of product or process 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.
Classification
Class name : Hierarchy level
  • ILCD: Unit processes / Materials production / Metals and semimetals
General comment on data set 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.
Copyright No
Owner of data set
Quantitative reference
Reference flow(s)
Functional Unit The functional unit is a 1 kg NdFeB magnet
Technological representativeness
Technology description including background system 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.
Flow diagram(s) or picture(s)
  • ZnSwbt4lSo9tUyxMvOZcijcJnSb.png Image
LCI method and allocation
Type of data set Unit process, single operation
LCI Method Principle Attributional
Deviation from LCI method principle / explanations None
Deviations from LCI method approaches / explanations In 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 analysis
Deviation from modelling constants / explanations None
Data sources, treatment and representativeness
Deviation from data cut-off and completeness principles / explanations None
Deviation from data selection and combination principles / explanations None
Deviation from data treatment and extrapolations principles / explanations None
Data source(s) used for this data set
Completeness
Completeness of product model No statement
Validation
Type of review
Dependent internal review
Reviewer name and institution
Data generator
Data set generator / modeller
Data entry by
Time stamp (last saved) 2023-12-17T22:58:19+08:00
Publication and ownership
UUID 7892951e-a1e9-4ac1-b836-e4fbfef2a4bc
Date of last revision 2024-04-20T15:07:15.502825+08:00
Data set version 00.01.005
Permanent data set URI https://lcadata.tiangong.world/showProcess.xhtml?uuid=7892951e-a1e9-4ac1-b836-e4fbfef2a4bc&version=01.00.000&stock=TianGong
Owner of data set
Copyright No
License type Free of charge for all users and uses

Inputs

Type of flow Classification Flow Location Mean amount Resulting amount Minimum amount Maximum amount
Product flow
Energy carriers and technologies / Electricity 4.2696 MJ4.2696 MJ
General comment Bayan Obo: included in milling
Product flow
Materials production / Inorganic chemicals 0.206 kg0.206 kg
General comment Sodium silicate. Bayan Obo: based on Metsc
Product flow
Materials production / Organic chemicals 0.086 kg0.086 kg
General comment Fatty acid. Bayan Obo
Product flow
Materials production / Organic chemicals 0.075 kg0.075 kg
General comment Chemicals, organic. Bayan Obo: precipitant unknown
Product flow
Transport services / Other transport 0.134 t*km0.134 t*km
General comment Bayan Obo: lorry, organic chemicals 803 km, other chemicals 20 km, lorry, EURO3

Outputs

Type of flow Classification Flow Location Mean amount Resulting amount Minimum amount Maximum amount
Waste flow
Wastes / Mining waste 7132.0 kg7132.0 kg
General comment Bayan Obo: calculation from experts of RWTH Aachen University
Product flow
Materials production / Metals and semimetals 8.4 kg8.4 kg
General comment RE concentrate. Bayan Obo: input for next process, Roasting