GB 29435-2025 Norm of energy consumption per unit production of rare earth metallurgical enterprise English, Anglais, Englisch, Inglés, えいご
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ICS
CCS H
National Standard of the People's Republic of China
GB 29435-2025
Norm of energy consumption per unit production of rare earth metallurgical enterprise
稀土冶炼企业单位产品能源消耗限额
Issue date: 2025-12-31 Implementation date: 2027-01-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Energy Consumption Limit Grades
5 Technical Requirements
6 Statistical Scope and Calculation Method
Annex A (Informative) Reference Coefficients for Converting Common Energy Varieties into Standard Coal Equivalent
Annex B (Informative) Reference Energy Equivalents for Common Energy-consuming Working Fluids
The Norm of Energy Consumption per Unit Product of Rare Earth Smelting Enterprises
1 Scope
This document specifies the energy consumption limit grades, technical requirements, statistical scope, and calculation method for the energy consumption per unit product (compounds, metals, and alloys) of rare earth smelting enterprises (hereinafter referred to as energy consumption).
This document applies to the calculation and assessment of energy consumption per unit product (compounds, metals, and alloys) for rare earth smelting enterprises, and to the energy consumption control for new construction, renovation, and expansion projects. This document also applies to rare earth compounds produced through the comprehensive recovery process of NdFeB scrap.
2 Normative References
The following documents contain provisions which, through normative reference in this text, constitute essential provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 2589 General Principles for Calculation of Comprehensive Energy Consumption
GB/T 12723 General Principles for Formulating the Norm of Energy Consumption per Unit Product
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 2589 and GB/T 12723 apply.
4 Energy Consumption Limit Grades
4.1 Energy Consumption Limit Grades for Rare Earth Compounds
4.1.1 The energy consumption limit grades per unit product for rare earth compounds produced from ionic-type rare earth ores are shown in Table 1, where Grade 1 represents the lowest energy consumption.
4.1.2 The energy consumption limit grades per unit product for rare earth compounds produced from mixed-type rare earth ores are shown in Table 2, where Grade 1 represents the lowest energy consumption.
4.1.3 The energy consumption limit grades per unit product for rare earth compounds produced from bastnasite are shown in Table 3, where Grade 1 represents the lowest energy consumption.
4.1.4 The energy consumption limit grades per unit product for rare earth compounds produced through the comprehensive recovery of NdFeB scrap are shown in Table 4, where Grade 1 represents the lowest energy consumption.
4.2 Energy Consumption Limit Grades for Rare Earth Metals and Alloys
4.2.1 The energy consumption limit grades per unit product for rare earth metals and alloys produced by electrolysis and thermal reduction (excluding intermediate alloy method) are shown in Table 5, where Grade 1 represents the lowest energy consumption.
4.2.2 The energy consumption limit grades per unit product for rare earth metals produced by the intermediate alloy method are shown in Table 6, where Grade 1 represents the lowest energy consumption.
5 Technical Requirements
5.1 The Energy Consumption Limit Value per Unit Product
For existing production enterprises of rare earth compounds from ionic-type rare earth ores, mixed-type rare earth ores, bastnasite, comprehensive recovery of NdFeB scrap, rare earth metals and alloys by electrolysis and thermal reduction (excluding intermediate alloy method), and rare earth metals by the intermediate alloy method, their energy consumption per unit product shall respectively meet the Grade 3 requirements specified in Tables 1 through 6.
5.2 The Energy Consumption Access Value per Unit Product
For new construction, renovation, and expansion production enterprises of rare earth compounds from ionic-type rare earth ores, mixed-type rare earth ores, bastnasite, comprehensive recovery of NdFeB scrap, rare earth metals and alloys by electrolysis and thermal reduction (excluding intermediate alloy method), and rare earth metals by the intermediate alloy method, their energy consumption per unit product shall respectively meet the Grade 2 requirements specified in Tables 1 through 6.
6 Statistical Scope and Calculation Method
6.1 Statistical Scope
6.1.1 Overview
The comprehensive energy consumption for rare earth compounds, metals, and alloy products includes all primary energy (e.g., natural gas), secondary energy (e.g., electricity, heat, petroleum products, coke, coal gas) consumed by the production system, auxiliary production system, and subsidiary production system, as well as the energy consumed by purchased energy-consuming working fluids (e.g., water, oxygen, compressed air) used in production. For rare earth products produced on the same production line where energy consumption cannot be measured separately, the energy consumption of each product shall be allocated proportionally based on the rare earth element content of the input raw materials.
6.1.2 Statistical Scope for Various Product Energy Consumption
6.1.2.1 Rare Earth Compound Production System
The various energy consumed from the input of rare earth concentrate raw materials to the output of qualified rare earth oxides and carbonates, including but not limited to energy consumed by units such as concentrate decomposition, leaching, solvent extraction separation, precipitation/crystallization, calcination, packaging, etc.
6.1.2.2 Rare Earth Metal and Alloy Production System
The various energy consumed from the input of rare earth compound raw materials to the output of qualified rare earth metals and alloys, including but not limited to energy consumed by at least one of the production process units such as molten salt electrolysis, metallothermic reduction, reduction-distillation, refining/purification, intermediate alloy method, surface treatment unit, packaging unit, etc.
6.1.2.3 Auxiliary Production System
The various energy consumed by the equipment and facilities required for the normal completion of auxiliary production, including systems supplying air, oil, water, gas, oxygen, etc., for production, as well as energy consumed by fans, dust collection, fume treatment, instrumentation, and environmental protection/energy-saving facilities (excluding multi-effect evaporation and mechanical vapor recompression facilities).
6.1.2.4 Subsidiary Production System
The various energy consumed by the facilities and equipment required to provide services during the auxiliary production process, including energy consumed by raw material testing, laboratory analysis, internal vehicle transport, maintenance, factory canteens, administration, etc.
6.1.2.5 Calculation of Energy Consumption for Waste Heat Utilization
The energy used by waste heat utilization devices is included in energy consumption. The self-used portion of recovered energy is included in the energy consumption of the using
