In last decade, the utilization of CO₂ resources in steelmaking has achieved certain metallurgical effects and the technology is maturing. In this review, we summarized the basic reaction theory of CO₂, the CO₂ conversion, and the change of energy-consumption when CO₂ was introduced in converter steelmaking process. In the CO₂-O₂ mixed injection (COMI) process, the CO₂ conversion ratio can be obtained as high as 80% or more with a control of the CO₂ ratio in mixture gas and the flow rate of CO₂, and the energy is saving and even the energy consumption can be reduced by 145.65 MJ/t under certain operations. In addition, a complete route of CO₂ disposal technology is proposed combining the comparatively mature technologies of CO₂ capture, CO₂ compression, and liquid CO₂ storage to improve the technology of CO₂ utilization. The results are expected to form a large-scale, highly efficient, and valuable method to dispose of CO₂.

在过去的十年中，在炼钢中利用CO ₂资源已经取得了一定的冶金效果，技术日趋成熟。在这篇综述中，我们总结了转炉炼钢过程中CO ₂的基本反应原理，CO ₂转化率以及引入CO ₂时的能耗变化。在CO ₂ -O ₂混合注入（COMI）工艺中，通过控制混合气体中的CO ₂比率和CO ₂的流量，可以获得高达80％或更高的CO ₂转化率。，在某些操作下，可以节省能源，甚至可以将能耗降低145.65 MJ / t。此外，结合成熟的CO ₂捕集，CO ₂压缩和液态CO ₂储存技术，提出了一条完整的CO ₂处置技术路线，以提高CO _2的利用技术。预期结果将形成大规模，高效且有价值的处置CO _2的方法。