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球墨铸造生铁的开发与冶炼
Development and Smelting of Foundry Pig Iron for Nodular Cast Iron
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- DOI:
- 作者:
- 黄宏奇
HUANG Hongqi
- 作者单位:
- 马鞍山钢铁公司
Maanshan Iron & Steel Co., Ltd., Maanshan 243000, China
- 关键词:
- 球墨铸造生铁 冶炼 烧结矿 P含量 高炉
nodular cast pig iron smelting sintered ore P content blast furnace
- 摘要:
- 通过对原料资源的调查和分析,对冶炼球墨铸造生铁进行了可行性研究。选择凹山磁铁矿、氧化铁皮和罗布河铁矿粉作为烧结含铁原料,以降低烧结矿P含量;在生产烧结矿过程中,对碱度、配碳量和其他烧结参数加以调整;在高炉冶炼过程中,为了控制生铁中P含量,采用降低熟料率的方法,即25%大山生矿+75%高碱度烧结矿,再加入一定数量的硅石、锰矿等的炉料结构。最终成功生产出合格的球墨铸造生铁。The feasibility of smelting of foundry pig iron for ductile iron was studied by investigation and analysis of raw material resources. Aoshan magnetite ore, iron oxide scale and Luobohe iron ore powder were selected as the raw materials for sinter to reduce the P content of sinter. In the process of sinter production, alkalinity, carbon content and other sintering parameters were adjusted. In the process of blast furnace smelting, in order to control the P content in pig iron, the method of reducing clinker rate was adopted, that was, 25% of dashanite ore and 75% of high-basicity sinter, and then a certain amount of silica, manganese ore and other charge structure was added. Finally, the qualified foundry pig iron for ductile iron is successfully produced.