Sustainable phosphorus supply by phosphorus recovery from steelmaking slag: a critical review
Sustainable phosphorus supply by phosphorus recovery from steelmaking slag: a critical review
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DOI：
10.1016/j.resconrec.2022.106203
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
Huafang Yu;Xin Lu;Takahiro Miki;K. Matsubae;Yasushi Sasaki;T. Nagasaka
中科院分区：
文献类型：
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作者：
Huafang Yu;Xin Lu;Takahiro Miki;K. Matsubae;Yasushi Sasaki;T. Nagasaka
磷对农业和工业至关重要，是一种不可再生资源。尽管这种资源如此重要，但高品位磷矿石矿床正在迅速枯竭，并声称经济上可用的矿床可能在世纪内完全耗尽。因此，寻找替代磷资源是实现可持续磷供应的迫切需要。无论从数量还是质量上看，钢渣都是一种极具吸引力的二次磷资源。它作为替代磷的优点是磷含量较高，供应充足，成分固定，污染小，热化学性质与原生磷矿石相似。为提高对从钢渣中回收磷的认识，综述了钢渣中磷的热力学性质、钢渣中富磷部分的富集以及火法和湿法提取磷的研究进展。此外，还讨论了从钢渣中回收磷的经济性，提出了提高磷回收资源效率的途径。
Phosphorus is essential for agriculture and industry and is a non-renewable resource. In spite of such importance of the resource, high-grade phosphate rock deposits are rapidly being depleted and claim that economically available deposits may be exhausted entirely within a century. Therefore, finding alternative phosphorus resources is urgent for sustainable phosphorus supply. Steelmaking slag is an attractive secondary phosphorus resource from both quantity and quality viewpoints. Its advantages as alternative phosphorus include relatively high phosphorus content, sufficient supply, fairly fixed composition with slight contamination, and similar thermochemical properties as primary phosphate rock. To promote the understanding of phosphorus recovery from steelmaking slags, (1) the thermodynamic properties of phosphorus in steelmaking slags, (2) the enrichment of phosphorus-rich part from steelmaking slags, and (3) the extraction of phosphorus by pyro- and hydro-metallurgical processes are reviewed. Moreover, the economic aspects of phosphorus recovery from steelmaking slag are discussed, the approaches to promote the resource efficiency of phosphorus recovery are proposed.