Abstract Phosphorus (P) is one of the most deleterious elements in iron ore, it is easy to form iron phosphides that make steel brittle during reduction processes. A new process (direct reduction and flash smelting separation (FSS)) of treating high phosphorus iron ore (HPIO) is introduced in this paper. By limiting the smelting separation between slag and iron to the level of about 1 s, the reduction and migration process of P element was restrained, and the content of P element in the metallic iron obtained after separation was limited to about 0.3 wt%. The effects of flash smelting temperature and ore particle size on the flash smelting process were studied. The migration process of phosphorus was analyzed, and a mathematical model of this smelting process was established to facilitate the visualized understanding and regulation of this process.

中文翻译：

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一种处理高磷铁矿粉的直接还原-闪速熔炼分离新工艺

摘要 磷（P）是铁矿石中最有害的元素之一，在还原过程中容易形成磷化铁，使钢变脆。介绍了一种处理高磷铁矿(HPIO)的新工艺(直接还原闪速熔炼分离(FSS))。通过将渣铁熔炼分离时间限制在1s左右，抑制了P元素的还原和迁移过程，分离后得到的金属铁中P元素的含量限制在0.3wt%左右。研究了闪速熔炼温度和矿石粒度对闪速熔炼过程的影响。分析了磷的迁移过程，建立了该冶炼过程的数学模型，便于对该过程的可视化理解和调控。