|
|
|
| Low Carbon Economy and Iron and Steel Industry |
| |
|
|
|
|
Abstract Despite of natural causes (like volcano, solar activities, etc.), climate warming is also caused by green house gases emitted by applying fossil fuels in the past 250 years since the industrial revolution taking place. Current iron and steel industry is based on carbon -related metallurgical process. Its CO2 emission (hereinafter referred to as "carbon emission" according to international practice) accounts for 5%-6% of the total carbon emission of the world. Since China is in the middle stage of industrialization and urbanization which is characterized by large amount of production and consumption of iron and steel, the carbon emission of iron and steel industry makes up 15% of the China's total carbon emission. The countermeasures of iron and steel industry in many countries before 2020 are energy saving and emission reducing in BF-BOF process and expanding EAF process. Comparing with the international advanced level, the fuel ratio in China's iron and steel industry is 15%-20% lagging behind. Therefore, there are still some spaces for cutting down carbon emission. In the meantime, by applying blast furnace top gas recycle, and injection of coke oven gas after reforming through blast furnace stack to reduce indirectly by H2/CO gas, carbon emission can be further lowered by 10%-20%. By the mid of this century (about the year of 2050) when renewable energy and nuclear power become mainstream energy sources again, it is possible to develop a next generation of iron and steel making -- "hydrogen reduction".
|
|
Received: 03 March 2010
|
|
|
|
| [1] |
Jun Zhao, Hai-bin Zuo, Chao Ling, Wen-tao Guo, Jing-song Wang, Qing-guo Xue. Microstructure evolution of coke under CO2 and H2O atmospheres[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(7): 743-754. |
| [2] |
Sheng-li Wu, Xiao-bo Zhai, Li-xin Su, Xu-dong Ma. Ore-blending optimization for Canadian iron concentrate during iron ore sintering based on high-temperature characteristics of fines and nuclei[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(7): 755-769. |
| [3] |
Feng Zhang, De-qing Zhu, Jian Pan, Zheng-qi Guo, Meng-jie Xu. Improving roasting performance and consolidation of pellets made of ultrafine and super high grade magnetite concentrates by modifying basicity[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(7): 770-781. |
| [4] |
Da‑peng Li, Hua‑zhang Wu, Hai‑feng Wang, Hong Li. Growth of solidified shell in bloom continuous casting mold of hypo-peritectic steel based on a FeS tracer method[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(7): 782-787. |
| [5] |
Jie Yang, Deng‑fu Chen, Miao‑yong Zhu. Crystallization and heat transfer of CaO–SiO2-based slag for high-Mn–high-Al steel[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(7): 788-795. |
| [6] |
Ping‑guo Jiang, Jin‑sheng Liu, Yi‑yu Xiao, Xiao‑heng Tan, Wen‑jie Liu. Recovery of iron from copper slag via modified roasting in CO–CO2 mixed gas and magnetic separation[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(7): 796-806. |
|
|
|
|
2010, Vol. 45 
