Full
Outline
Aiming at the problems of 2600 m3 blast furnace in Benxi Steel, the main causes such as long-term furnace wall bonding, low water temperature difference, inactive bosh area and poor economic and technical indicators were analyzed. The causes were identified as the long-term excessive harmful elements in raw fuels, low bin level operation, and untimely adjustment of blast furnace operation. Insufficient blast volume, inadequate blast kinetic energy, hearth accumulation, severe furnace wall bonding and long-term unstable furnace condition were collectively induced by these factors. By adopting measures such as adjusting the charging system, optimizing the wall cooling system, improving the raw fuel quality, conducting manganese ore flushing, plugging tuyere, and adding coke for hot flushing of the hearth, the furnace condition gradually recovered to the normal production state.
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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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