Due to the low quality of available iron ore, it is necessary to develop a new technology to produce high quality steel from ore containing a high concentration of phosphorous. In this study, we propose a new process for producing low-P steel by concentrating P in the dicalcium silicate phase through a partial reduction process. High-P iron ore was mixed with varying quantities of CaO and graphite and heated at 1573 K in an Ar atmosphere, and the obtained product was analyzed by electron probe microanalysis. It was found that in the reduced product mixture that was obtained under specific conditions of high basicity and a lower amount of added carbon, more than 95% of P was concentrated in the dicalcium silicate phase, and the P content in metallic iron was sufficiently low.

由于可利用的铁矿石质量低，有必要开发一种新技术，从含有高浓度磷的矿石中生产优质钢。在这项研究中，我们提出了一种通过部分还原工艺将 P 浓缩到硅酸二钙相中来生产低 P 钢的新工艺。将高磷铁矿石与不同数量的 CaO 和石墨混合，在 Ar 气氛中以 1573 K 加热，并通过电子探针微量分析对所得产物进行分析。发现在特定条件下高碱度和较少加碳量下得到的还原产物混合物中，95%以上的P富集在硅酸二钙相中，金属铁中的P含量足够低。 .