Full
Outline
The sintering of high-proportion iron ore concentrate is often plagued by such as poor permeability, inadequate granulation and insufficient liquid phase formation. The result showed that increasing the proportion of active quicklime could significantly enhance the sintering process. The problems mentioned above were systematically investigated and the mechanism by which a high-proportion of active quicklime improved sintering performance was explained in both theory and practice. Due to its high specific surface area and strong reactivity, active quicklime could quickly hydrate and release heat, thereby effectively suppressing the over-wet layer effect, increasing the mixture temperature, and optimizing the granulation structure. Simultaneously, it could promote the formation of key liquid phase minerals such as calcium ferrite and composite ferrites at lower temperatures, consequently improving the mechanical strength of the sinter. Based on sintering production practices at Ansteel's main plant, a process optimization path for applying a high-proportion of active quicklime was further proposed. The research results can provide a theoretical basis and technical guidance for stable and efficient sintering under high-proportion iron ore concentrate conditions, which is of great significance for advacing energy conservation, consumption reduction, and the upgrade of green metallurgical processes in the steel industry.
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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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