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The effects of number of bottom gas supply component and bottom-blown gas intensity on mixing time of molten pool are studied through the water model test of bottom blowing system for 150 t converter in Steel-making Plant. The mixing time of 6 bottom gas supply components is the shortest with the same bottom-blown gas intensity; the higher the bottom-blown gas intensity, the shorter the mixing time with the same number of bottom gas supply component. The mode of bottom-blown gas supply in the processes of smelting different steel grades with 150 t converter is optimized combining with the results of water model test. As a result, the dephosphorization rate at smelting end-point could reach 92.3% and total iron content of slags at end-point of whole campaign could reach 17.3%, which could provide the technical guidance for improving the economic and technical norms of production.
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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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