GB21341-2022
The norm of energy consumption per unit production of ferroalloy
铁合金单位产品能源消耗限额
GB 21341-2022 is a current mandatory Chinese national standard for The norm of energy consumption per unit production of ferroalloy. It appears in the Construction compliance cluster with a energy efficiency focus and has an implementation date of Jan 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 ferroalloy production, including new and expanded projects. It covers 9 specific product types produced via submerged arc furnaces, refining electric furnaces, and blast furnaces, such as ferrosilicon, ferromanganese-silicon, and high-carbon ferrochromium. It is mandatory for all existing and new ferroalloy manufacturers in China. The standard references GB/T 2272 and GB/T 3795 for product definitions.
Technical requirements
The standard establishes a three-tier energy consumption limit grading system, where Grade 1 represents the highest efficiency (lowest consumption). It sets specific limits for smelting electricity consumption, coke consumption, and comprehensive energy consumption per unit product. Existing facilities must not exceed the Grade 3 limits, while new or expanded projects must meet the stricter Grade 2 limits. The standard also provides correction values for energy limits based on the raw material grade (e.g., Mn or Cr content) entering the furnace. It defines benchmark compositions for main elements like Silicon and Manganese to standardize production calculations.
Testing methods
The standard outlines specific statistical scopes and calculation formulas for determining energy consumption. It requires calculating the comprehensive energy consumption by summing smelting electricity, carbon reductants, and power energy, then subtracting recovered secondary energy. The smelting electricity consumption is measured at the high-voltage side of the furnace transformer, excluding furnace drying electricity. Energy conversion to standard coal equivalent (kgce) must follow the principles in GB/T 2589. Manufacturers must convert actual production to a standard tonnage based on the main element's benchmark composition.
FAQs
What products are regulated under GB 21341-2022?
It regulates 9 types of ferroalloys, including ferrosilicon, high-carbon ferromanganese, ferromanganese-silicon, high-carbon ferrochromium, and charge ferrochromium, among others.
Are there any updates from the previous version of GB 21341?
Yes, the 2022 version adds new product varieties like charge ferrochromium and low carbon ferromanganese-silicon, and updates the energy consumption limit values and correction factors.
What are the compliance limits for new ferroalloy projects?
New and expanded facilities must meet the Grade 2 energy consumption limits for smelting electricity, coke consumption, and comprehensive energy consumption.
The summary above provides a high-level overview of GB 21341-2022. 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 21341-2022 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 21341-2017