GB21256-2013
The norm of energy consumption per unit product of major individual-process of crude steel manufacturing process
粗钢生产主要工序单位产品能源消耗限额
GB 21256-2013 is a current mandatory Chinese national standard for The norm of energy consumption per unit product of major individual-process of crude steel manufacturing process. It appears in the Construction compliance cluster with a energy efficiency focus and has an implementation date of Oct 1, 2014.
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 statistical calculation, evaluation, and energy consumption control of new equipment in the sintering process, pelletizing process, blast furnace process, and converter process within steel enterprises. It is mandatory for all existing and newly built or expanded steel manufacturing facilities in China. It does not apply to special-purpose converters such as vanadium extraction, dephosphorization, or stainless steel converters.
Technical requirements
The standard establishes mandatory energy consumption limits for major crude steel manufacturing processes, categorized into limiting values for existing facilities and access values for new or expanded facilities. It also provides recommended advanced values for energy efficiency improvement. The standard specifies energy consumption requirements using the equivalent value of electricity conversion coefficients for mandatory limits, while also providing advanced values using the equivalent value of electricity conversion. Additionally, it outlines advanced values for energy recovery, including top pressure recovery turbine (TRT) power generation in blast furnaces, waste heat recovery in sintering, and gas and steam recovery in converters. Manufacturers must implement energy-saving measures and optimize processes to meet these recovery targets.
Testing methods
The standard defines the statistical scope for each process, covering production systems, auxiliary systems, and excluding ancillary systems. It provides calculation formulas for the energy consumption per unit product for the sintering, pelletizing, blast furnace, and converter processes. The calculation involves subtracting recovered energy from total consumed energy and dividing by the output of qualified products. Energy conversion coefficients should be based on measured calorific values, with recommended values provided in the appendices.
FAQs
What products are regulated under GB 21256-2013?
GB 21256-2013 regulates the energy consumption of major crude steel manufacturing processes, specifically the sintering, pelletizing, blast furnace, and converter processes.
Are there any updates from the previous version of GB 21256-2013?
Yes, compared to GB 21256-2007, this version added energy consumption limits for the pelletizing process, removed limits for the electric furnace process, and revised the classification of limit categories to limiting values, access values, and advanced values.
How does GB 21256-2013 handle special raw materials?
For sintering and blast furnace processes using rare earth ores or vanadium-titanium magnetite, the energy consumption limits are adjusted. For every 1% increase in the proportion of these special ores, the limit increases by a specified amount of kgce/t.
The summary above provides a high-level overview of GB 21256-2013. 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 21256-2013 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