以转炉渣为基础渣,在实验室测定了CaF2、P2O5质量分数变化对转炉渣熔点的影响。依据测定结果,利用转炉渣配制适合铁水脱磷要求的脱磷剂进行了铁水预脱磷实验,结合相关的转炉脱磷研究结果,分析了脱磷剂中P2O5对脱磷的影响,提出了对最终外排炉渣中的质量分数要求。在1350℃温度条件下,w(P2O5)=1.66%转炉渣为基础的脱磷剂,对预脱硅处理后的铁水,脱磷剂加入10%时可取得约77%的脱磷率。脱磷剂中w(P2O5)<7.5%时可取得60%以上的脱磷率。 Based on converter slag, the influence of CaF2 and P2O5 mass fraction on the melting point of converter slag was measured in the laboratory. According to the results of the test, the dephosphorization agent suitable for hot metal dephosphorization was prepared by using converter slag to carry out pre-dephosphorization experiments. Combined with the related dephosphorization results, the influence of P2O5 on dephosphorization was analyzed. Final efflux of slag in the mass fraction requirements. Under the temperature of 1350 ℃, the dephosphorization agent based on w (P2O5) = 1.66% converter slag can achieve about 77% dephosphorization rate when adding 10% of pre-desiliconized molten iron and dephosphorization agent. Dephosphorization agent w (P2O5) <7.5% can get more than 60% dephosphorization rate.