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Process Data set: Rare Earth magnetic separation;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 magnetic separation;Rare Earth;In-situ leaching;neodymium iron boron (NdFeB) magnet
Use advice for data set When utilizing this life cycle assessment data for the production of NdFeB magnets, ensure to consider the allocation method based on market prices of rare earth oxides (REOs). Be aware that, for a comprehensive understanding of environmental impacts, a sensitivity analysis through mass-based allocation should also be carried out. This data set is specific to a functional unit of 1 kg NdFeB magnet, and any extrapolation should maintain equivalent ratios or be adjusted according to the actual weight of magnets being assessed.
Technical purpose of product or process The rare earth magnetic separation and in-situ leaching processes described are utilized for the production of neodymium iron boron (NdFeB) magnets. These magnets are commonly used in various high-tech applications including in the manufacturing of electronic devices, wind turbines, electric vehicle motors, and other advanced technological equipment where strong permanent magnets are required.
Classification
Class name : Hierarchy level
  • ILCD: Unit processes / Materials production / Non-energetic raw materials
General comment on data set The rare earth magnetic separation and in-situ leaching processes described are utilized for the production of neodymium iron boron (NdFeB) magnets. These magnets are commonly used in various high-tech applications including in the manufacturing of electronic devices, wind turbines, electric vehicle motors, and other advanced technological equipment where strong permanent magnets are required.
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) 2023-12-17T23:00:59+08:00
Publication and ownership
UUID 70db3953-e6f2-42d0-82df-d2301a8eb9db
Date of last revision 2024-04-20T15:07:15.536348+08:00
Data set version 00.01.005
Permanent data set URI https://lcadata.tiangong.world/showProcess.xhtml?uuid=70db3953-e6f2-42d0-82df-d2301a8eb9db&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 0.3276 MJ0.3276 MJ
General comment Bayan Obo: calculation based on Selection Guide for Process Equipment3

Outputs

Type of flow Classification Flow Location Mean amount Resulting amount Minimum amount Maximum amount
Product flow
Materials production / Inorganic chemicals 265.6 kg265.6 kg
General comment Iron oxide. Bayan Obo: calculation based on ore concentration and yield
Product flow
Materials production / Inorganic chemicals 0.76 kg0.76 kg
General comment Niobium oxide. Bayan Obo: calculation based on ore concentration and yield
Waste flow
Wastes / Mining waste 158.7 kg158.7 kg
General comment Bayan Obo: estimated by experts from RWTH Aachen University
Product flow
Materials production / Metals and semimetals 724.0 kg724.0 kg
General comment Ore pulp. Bayan Obo: input for next process: Flotation