| 关键数据集信息 | |
| 位置 | NMG-CN |
| 参考年 | 2012 |
| 名字 |
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| 数据集使用建议 | 在使用含稀土矿石开采相关数据集时，确保您的生命周期评估考虑了与露天采矿技术（如钻孔和爆破）相关的特定环境影响。在资源耗尽计算中计入高矿石品位4.1% REO，并且对需要稀土元素的产品一致地应用数据集。关注可能改变过程效率或环境影响的技术转变。复查数据集支持信息中详细的LCI、假设和分摊选择，以确保数据质量和代表性。 |
| 产品或过程的技术目的 | 含稀土矿石的开采过程主要用于提取生产稀土元素所必需的原材料。这些元素对于制造高科技设备、电子产品、清洁能源技术、先进的航空航天部件以及专用磁铁（例如用于NdFeB（钕铁硼）磁铁）至关重要。 |
| 分类 |
类名
:
层次结构级别
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| 关于数据集的一般性意见 | 含稀土矿石的开采过程主要用于提取生产稀土元素所必需的原材料。这些元素对于制造高科技设备、电子产品、清洁能源技术、先进的航空航天部件以及专用磁铁（例如用于NdFeB（钕铁硼）磁铁）至关重要。 |
| 版权 | 不 |
| 数据集的所有者 | |
| 参考定量 | |
| 参考流 |
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| 功能单元 | Not Mentationed |
| 技术代表性 | |
| 技术说明，包括后台系统 | 使用传统的露天采矿技术（例如钻孔和爆破）从露天矿中回收矿石。该矿蕴藏矿石 7.5 亿吨，稀土品位 4.1% |
| 生命周期清单方法和分配 | |||||
| 数据集的类型 | Unit process, single operation | ||||
| 生命周期清单方法原理 | Attributional | ||||
| 偏离生命周期清单方法原理/解释 | 无 | ||||
| 与LCI方法方法/解释的偏差 | In this section, we discuss the life cycle inventory (LCI) in detail. Each subsection discusses one process of the LCA. Section 3.1 describes the conventional method of rare earths in China from mineral sources. Section 3.2 describes the production process used to transform neodymium oxide into an NdFeB magnet. Finally, section 3.3 describes two alternative recycling processes that could be used. Detailed information on the LCI, assumptions, and allocation choices can be found in the Supporting Information. | ||||
| 与建模常数/解释的偏差 | 无 | ||||
| 数据来源、处理和代表性 | |||||
| 偏离数据截止和完整性原则/解释 | 无 | ||||
| 偏离数据选择和组合原则/解释 | 无 | ||||
| 偏离数据处理和外推原则/解释 | 无 | ||||
| 用于此数据集的数据源 | |||||
| 完整性 | |||||
| 产品模型的完整性 | No statement | ||||
| 验证 | |||||
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| 数据生成 | |
| 数据集生成/建模 | |
| 数据输入方式 | |
| 时间戳（上次保存） | 2023-12-24T16:06:40+08:00 |
| 出版和所有权 | |
| UUID | 7b497c8c-e1cb-4f8d-9862-a348b761be84 |
| 最后修订日期 | 2024-04-20T15:07:22.067781+08:00 |
| 数据集版本 | 00.01.005 |
| 永久数据集 URI | https://lcadata.tiangong.world/showProcess.xhtml?uuid=7b497c8c-e1cb-4f8d-9862-a348b761be84&version=01.00.000&stock=TianGong |
| 数据集的所有者 | |
| 版权 | 不 |
| 许可证类型 | Free of charge for all users and uses |
输入
| 流类型 | 分类 | 流 | 位置 | 平均量 | 计算量 | 最小量 | 最大量 | ||
|---|---|---|---|---|---|---|---|---|---|
| Product flow | Energy carriers and technologies / Electricity | 16.2 MJ | 16.2 MJ | ||||||
| Product flow | Materials production / Inorganic chemicals | 1.7E-6 kg | 1.7E-6 kg | ||||||
| |||||||||
| Product flow | Systems / Unspecific parts | 5.0E-4 kg | 5.0E-4 kg | ||||||
| |||||||||
| Product flow | Materials production / Organic chemicals | 1.25 kg | 1.25 kg | ||||||
输出
| 流类型 | 分类 | 流 | 位置 | 平均量 | 计算量 | 最小量 | 最大量 | ||
|---|---|---|---|---|---|---|---|---|---|
| Product flow | Materials production / Raw materials | 1.0 kg | 1.0 kg | ||||||
| |||||||||
| Product flow | Materials production / Other mineralic materials | 0.0034 kg | 0.0034 kg | ||||||
| Elementary flow | Land use / Land occupation | 1.2E-4 m2*a | 1.2E-4 m2*a | ||||||
| Elementary flow | Resources / Resources from ground / Non-renewable element resources from ground | 0.3 kg | 0.3 kg | ||||||
| Elementary flow | Resources / Resources from ground / Non-renewable element resources from ground | 0.0164 kg | 0.0164 kg | ||||||
| Elementary flow | Resources / Resources from ground / Non-renewable element resources from ground | 0.00984 kg | 0.00984 kg | ||||||
| Elementary flow | Resources / Resources from ground / Non-renewable element resources from ground | 0.00541 kg | 0.00541 kg | ||||||
| Elementary flow | Resources / Resources from ground / Non-renewable element resources from ground | 0.00172 kg | 0.00172 kg | ||||||
| Elementary flow | Resources / Resources from ground / Non-renewable element resources from ground | 8.14E-5 kg | 8.14E-5 kg | ||||||
| Elementary flow | Resources / Resources from ground / Non-renewable element resources from ground | 4.1E-4 kg | 4.1E-4 kg | ||||||
| Elementary flow | Resources / Resources from ground / Non-renewable element resources from ground | 2.06E-4 kg | 2.06E-4 kg | ||||||
| Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.00513 MJ | 0.00513 MJ | ||||||
| Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.01 kBq | 0.01 kBq | ||||||
| Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.0506 kBq | 0.0506 kBq | ||||||