In this study, the integrated recycle process of basic oxygen furnace slag (BOFS) coupled with concentrated water from electrodeionization (CW-EDI) which was introduced into the direct carbonation process for the first time was investigated. The effects of different operating parameters on carbonation conversions of BOFS were studied and the reaction kinetics were determined via surface coverage model. Meanwhile, the changes of CW-EDI during leaching and carbonation processes were measured. Furthermore, the performance evaluation of BOFS applied as supplementary cementitious materials (SCMs) and a cost and benefits analysis of the whole process was conducted. The results indicated the feasibility of the integrated system to industrial solid waste, sewage, and exhaust treatments and the maximum achievable carbonation conversion of BOFS was approximately 60.9% with R² of 0.958–0.982. A high level of calcium ion and the alkaline solution hindered the leaching of calcium ion from BOFS, whereas sodium ion was absorbed by BOFS simultaneously. The properties of the cement that used BOFS as SCMs met ASTM requirements. The suggested substitution ratios for fresh and carbonated BOFS in cement mortars were 15% and 10%, respectively. The economic results revealed the superiority of the carbonation and utilization process over traditional treatments in CO₂ emission reduction, cost saving and profit gaining.

在这项研究中，研究了碱性氧气炉渣（BOFS）和电去离子浓缩水（CW-EDI）的集成循环工艺，该工艺首次被引入直接碳酸化工艺中。研究了不同操作参数对BOFS碳酸化转化率的影响，并通过表面覆盖模型确定了反应动力学。同时，测定了浸出和碳化过程中CW-EDI的变化。此外，还对BOFS用作辅助水泥材料（SCM）的性能进行了评估，并对整个过程进行了成本和收益分析。结果表明，该集成系统可用于处理工业固体废物，污水，0.958-0.982中的²。高含量的钙离子和碱性溶液阻碍了钙离子从BOFS中的浸出，而钠离子同时被BOFS吸收。使用BOFS作为SCM的水泥的性能满足ASTM要求。水泥砂浆中新鲜和碳酸BOFS的建议替代率分别为15％和10％。经济结果表明，碳化和利用过程在减少CO ₂排放，节省成本和获利方面比传统方法优越。