Key Data Set Information | |
Location | CN |
Geographical representativeness description | Seven Southern Provinces |
Reference year | 2014 |
Name |
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Use advice for data set | The life cycle inventory (LCI) data set derived from this study is specific to the solvent extraction of REEs via the bastnaesite route in the Seven Southern Provinces. Care should be taken when comparing this LCI data set with others as variations in mineralogy, radioactivity, and waste treatment processes can lead to inconsistency. Studies exemplifying radioactivity and quantifying waste treatment flows should particularly note the methodology used for these assessments. When considering co-mining impacts, it is important to assess the co-products in addition to REEs. This LCI data represents the environmental inputs and outputs associated with the production of 1 kg of a basket of REO from the specified mineral and processing route. |
Technical purpose of product or process | The described process is utilized in the mining industry for the production of rare earth elements (REEs) via the bastnaesite route. This involves the use of solvent extraction techniques to refine the mined ore after preliminary processes like precipitation and calcination. The mined product is primarily used in various high-tech applications, including electronics, magnets, renewable energy technologies, and as catalysts in chemical synthesis. |
Classification |
Class name
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General comment on data set | The described process is utilized in the mining industry for the production of rare earth elements (REEs) via the bastnaesite route. This involves the use of solvent extraction techniques to refine the mined ore after preliminary processes like precipitation and calcination. The mined product is primarily used in various high-tech applications, including electronics, magnets, renewable energy technologies, and as catalysts in chemical synthesis. |
Copyright | No |
Owner of data set | |
Quantitative reference | |
Reference flow(s) |
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Functional Unit | The functional unit of this study is the production of 1 kg of the basket REO from each corresponding mineralogical and processing route. |
Technological representativeness | |
Technology description including background system | In this study, the REE production system was analyzed from mining up to and including solvent extraction which contains product finishing processes such as precipitation and calcination |
Flow diagram(s) or picture(s) |
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, the REE production system was analyzed from mining up to and including solvent extraction which contains product finishing processes such as precipitation and calcination (Fig. 1). The other categories assessed in the literature review were mineral type, radioactivity, waste treatment, and co-mining. For mineral type, it was noted that the mineralogy accounted for in each study was different, which makes comparison difficult. For radioactivity, we marked with an X those studies which exemplified radioactivity flows in the LCI (if provided). For waste, we distinguished those LCIs which quantified waste treatment flows. For co-mining, since all REE are co-products of each other, this column is meant to highlight the co-products in addition to REE. | ||||
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 | |||||
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Data generator | |
Data set generator / modeller | |
Data entry by | |
Time stamp (last saved) | 2024-01-04T18:21:27+08:00 |
Publication and ownership | |
UUID | 291380a5-0ea1-449e-88f9-b7fea121116e |
Date of last revision | 2024-04-20T15:07:24.894034+08:00 |
Data set version | 00.01.005 |
Permanent data set URI | https://lcadata.tiangong.world/showProcess.xhtml?uuid=291380a5-0ea1-449e-88f9-b7fea121116e&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 | ||
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Product flow | Materials production / Other mineralic materials | 0.0563 kg | 0.0563 kg | ||||||
Product flow | Materials production / Organic chemicals | 0.0253 kg | 0.0253 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 2.67 kg | 2.67 kg | ||||||
Product flow | Materials production / Raw materials | 1.17 kg | 1.17 kg | ||||||
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Elementary flow | Emissions / Emissions to water / Emissions to water, unspecified | 3.23 kg | 3.23 kg | ||||||
Product flow | Energy carriers and technologies / Electricity | 0.9540000000000001 MJ | 0.9540000000000001 MJ | ||||||
Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified (long-term) | 0.791 kg | 0.791 kg | ||||||
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Outputs
Type of flow | Classification | Flow | Location | Mean amount | Resulting amount | Minimum amount | Maximum amount | ||
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Product flow | Materials production / Raw materials | 1.0 kg | 1.0 kg | ||||||
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Waste flow | Wastes / Post consumer waste | 0.00531 kg | 0.00531 kg | ||||||
Elementary flow | Emissions / Emissions to water / Emissions to fresh water | 0.0538 m3 | 0.0538 m3 | ||||||
Product flow | Wastes / Radioactive waste | 0.108 kBq | 0.108 kBq | ||||||
Waste flow | Wastes / Production residues | 0.00268 kg | 0.00268 kg | ||||||
Product flow | Wastes / Other waste | 0.00215 kg | 0.00215 kg | ||||||
Elementary flow | Emissions / Emissions to water / Emissions to water, unspecified (long-term) | 0.00144 kg | 0.00144 kg | ||||||
Elementary flow | Emissions / Emissions to water / Emissions to fresh water | 0.0062 kg | 0.0062 kg | ||||||
Product flow | Materials production / Other mineralic materials | 0.075 kg | 0.075 kg | ||||||
Elementary flow | Emissions / Emissions to water / Emissions to fresh water | 0.0127 kg | 0.0127 kg |