GB25323-2023
The norm of energy consumption per unit production of nonferrous heavy metals metallurgical enterprises
有色重金属冶炼企业单位产品能源消耗限额
GB 25323-2023 is a current mandatory Chinese national standard for The norm of energy consumption per unit production of nonferrous heavy metals metallurgical enterprises. It appears in the Construction compliance cluster with a energy efficiency focus and has an implementation date of Jun 1, 2024.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to the calculation, assessment, and energy consumption control of nonferrous heavy metals metallurgical enterprises, specifically those producing copper, zinc, lead, nickel, tin, antimony, recycled lead, cobalt, and bismuth. It is applicable to existing facilities as well as newly built or expanded projects. It explicitly excludes certain specialized processes, such as copper smelting from hazardous waste, direct heap leaching of copper ores, and nickel smelting from oxidized nickel ores. Engineers must verify their specific raw materials and processes against the standard's scope to determine applicability.
Technical requirements
The standard establishes a three-tier energy consumption limit system (Level 1, Level 2, and Level 3) for unit products across various heavy metal smelting processes, where Level 1 represents the lowest energy consumption. For existing facilities, the energy consumption per unit product must not exceed the Tier 3 limit. For newly built, renovated, or expanded enterprises, the energy consumption must meet the stricter Tier 2 limit. The standard specifies comprehensive energy consumption requirements for each stage of production, including smelting, refining, and electrolysis. It also details the rules for energy apportionment in mixed smelting processes (e.g., copper-gold or lead-gold-silver mixed smelting) and provides guidelines on calculating energy recovered from waste heat utilization, ensuring that recovered energy is properly accounted for without double-counting.
Testing methods
The standard outlines statistical scopes and calculation methods for each metal category in its normative appendices (Appendix A to I). The primary evaluation method involves calculating the comprehensive energy consumption per unit product (in kgce/t) using a specific formula that incorporates direct energy consumption, auxiliary and affiliated production system energy use, and subtracts externally supplied secondary energy. It also references the use of standard coal conversion coefficients for various energy sources and energy-carrying mediums, as provided in the informative appendices (Appendix J and Appendix K).
FAQs
What products are regulated under GB 25323-2023?
The standard regulates the energy consumption of nonferrous heavy metals metallurgical enterprises, specifically covering the smelting of copper, zinc, lead, nickel, tin, antimony, recycled lead, cobalt, and bismuth.
Are there any updates from the previous version of GB 25323-2023?
Yes, this version consolidates and replaces several previous standards (e.g., GB 21248-2014, GB 21249-2014). Key updates include the addition of cobalt and bismuth smelting enterprises to the scope, the introduction of a three-tier energy consumption limit system, and the relocation of statistical scopes and calculation methods to the appendices.
What is the difference between the energy consumption limits for existing and new facilities?
Existing facilities must comply with the Tier 3 limit, which is the maximum allowable energy consumption. In contrast, newly built, renovated, or expanded projects must meet the more stringent Tier 2 limit to ensure higher energy efficiency.
The summary above provides a high-level overview of GB 25323-2023. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 25323-2023 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Management
- CCS
- F01
- ICS
- 27.010
- Competent department
- Standardization Administration of China
- Technical committee
- National Technical Committee on Energy Fundamentals and Management of Standardization Administration of China
Relationships
Replaces:GB 25323-2010, GB 21248-2014, GB 21249-2014, GB 21250-2014, GB 21251-2014, GB 21348-2014, GB 21349-2014