The iron and steel industry is the pillar industry in national economic development as well as its energy conservation and carbon reduction are the priority among priorities to achieve the national development goal of “carbon dioxide emission and carbon neutrality”. In this paper, it is briefly introduced the types and characteristics of main low carbon ironmaking technologies with hydrogen metallurgy as well as expounded its progress and current situations at home and abroad. The hydrogen rich reduction technology with blast furnace and hydrogen-based direct reduction technology with shaft furnace are the main technologies of low carbon ironmaking technologies with hydrogen metallurgy. Among them, the ability of carbon reduction for hydrogen rich reduction technology with blast furnace is limited, so it can be as short-term development direction of low carbon ironmaking technologies with hydrogen metallurgy for iron and steel industry. If combine with the carbon capture, utilization and storage (CCUS) technology, CO2 emissions could be further decreased. The hydrogen-based direct reduction technology with shaft furnace is without fossil energy in production process and carbon emissions could be reduced by over 80% compared with traditional production process of “blast furnace-converter”, which is inevitable development trend of technological reform in the iron and steel industry. In order to actively respond to the national green and low carbon development strategy and five major political tasks of Inner Mongolia, Baotou Steel actively implements the green low carbon ironmaking technologies with hydrogen including hydrogen-based mineral phase transformation of medium lean ore in Bayan Obo, hydrogen rich reduction with blast furnace and hydrogen-based direct reduction with shaft furnace so that the low carbon green production process of iron and steel is significantly improved.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |