The O₂–CaO jet with shrouding combustion flame demonstrates some advantages in quick melting and effective slag foaming by delivering lime powder deeply into the molten bath. Combining the discrete particle model and the eddy dissipation concept model with the detailed chemical kinetic mechanisms (GRI-Mech 3.0), computational fluid dynamics models of the O₂–CaO jet with different shrouding fuel mediums injection were developed. Firstly, the results of the numerical simulation were validated by the measured data of cold test for O₂–CaO injection. Then, the interaction between the particles and the gas jet of the O₂–CaO jet and the effect of shrouding fuel medium species on the fluid flow characteristics of the O₂–CaO jet were analyzed. Results show that the CaO particles can be effectively heated by the shrouding high-temperature combustion flame and compared with the O₂–CaO jet without shrouding gas, the potential core length was increased about 2.5, 3.3 and 4.3 times by the shrouding flame generated from CO, CH₄ and C₃H₈. And with shrouding CH₄ and C₃H₈ injection, the CaO particles can be clustered together in a long distance, which would be helpful to improve the utilization efficiency of CaO particles.

带有覆盖燃烧火焰的O ₂ -CaO射流通过将石灰粉深深地输送到熔池中，在快速熔化和有效的炉渣发泡方面显示出一些优势。将离散粒子模型和涡流消散概念模型与详细的化学动力学机理（GRI-Mech 3.0）相结合，建立了不同喷射燃料介质的O ₂ -CaO射流的计算流体动力学模型。首先，通过对O ₂ -CaO注入的冷试测量数据验证了数值模拟的结果。然后，O ₂ -CaO射流的颗粒与气体射流之间的相互作用以及燃料介质种类对O ₂流体流动特性的影响–分析了CaO射流。结果表明，CaO颗粒可以被罩式高温燃烧火焰有效加热，与不带罩式气体的O ₂ -CaO射流相比，CaO粒子的潜在芯长增加了约2.5、3.3和4.3倍。 CO，CH ₄和C ₃ H ₈。通过注入CH ₄和C ₃ H ₈，CaO颗粒可以长距离聚集在一起，这将有助于提高CaO颗粒的利用效率。