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The manganese content of molten iron in the production line of steelmaking in Rare Earth Steel Plate Co. is higher so that the highly purified armco iron could not be smelted by converter process. In the paper, it is introduced the demanganization process with double slag in LF is developed through simulating the demanganization condition of converter with LF, starting with such three aspects as basicity of slag, demanganization temperature and oxidability of slag as well as taking full advantage of existing equipment conditions of production line. The slag with high oxidation after tapping of molten steel from converter is utilized in LF, the ingredient of LF clinker is reasonably adjusted to produce efficient slag of demanganization and promote the steel slag reaction through argon stirring so as to create good thermodynamic and dynamical conditions for demanganization. According to the requirements of manganese content of products, double slag and single slag processes are applied in operations to realize the stable batch production of armco iron with the manganese content less than 0.03% and 0.02%.
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| 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 |
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