3 Basic Requirements

3.0.1 The blast furnace ironmaking engineering shall be based on the beneficiated material and apply the technologies of pulverized coal injection,high blast temperature,high pressure and oxygen enrichment in pursuit of ironmaking technology featuring high efficiency,low consumption,prime quality,long campaign and environmental friendliness．

3.0.2 The volume of blast furnace should be graded as 1000m ³ ,2000m ³ ,3000m ³ ,4000m ³ and 5000m ³ ,each of which specifies a certain range of effective volume ofthe blast furnace．

3.0.3 The blast furnace ironmaking engineering shall consider the proper feedstock and fuel quality and supply conditions in accordance with this Code．

3.0.4 The blast furnace shall be designedin rather large volume;the new blast furnace plant should hold two or three blast furnaces at its best．

3.0.5 The blast furnace ironmaking engineering shall be decided by making comparisons between and among different technical and economic proposals taking into account the national conditions and plant status．

3.0.6 The blast furnace ironmaking engineering shall consider the by‐product and energy recovery facilities as well as facilities for energy‐efficiency,consumption reduction and environmental protection．

3.0.7 The blast furnace ironmaking engineering shall comply with Safety Code for Gas of Industrial Enterprises (GB 6222)and SafetyRegulation for Ironmaking (AQ 2002)．