Innovative Method for Separating Phosphorus and Iron from High-Phosphorus Oolitic Hematite by Iron Nugget Process
Innovative Method for Separating Phosphorus and Iron from High-Phosphorus Oolitic Hematite by Iron Nugget Process
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DOI：
10.1007/s11663-014-0094-z
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发表时间：
2014-06
期刊：
影响因子：
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通讯作者：
H. Han;D. Duan;Xing Wang;Siming Chen
中科院分区：
文献类型：
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作者：
H. Han;D. Duan;Xing Wang;Siming Chen
本研究提出了一种通过块铁法从高磷鲕状赤铁矿中分离磷和铁的新方法。首先，研究了高磷鲕状赤铁矿的物理、化学和微观特征。然后讨论了高磷赤铁矿的反应机理以及铁块法分离磷和铁的可行性。同时，还对高磷赤铁矿用于转底炉块铁工艺的试验进行了研究。研究结果表明，块铁工艺是一种可行、高效的高磷鲕状赤铁矿铁磷分离方法。块铁中的磷含量相对较低。通过工艺参数优化，块铁中磷含量最低为0.22%，脱磷率达到86%以上，块铁工艺铁回收率达到85%以上。本研究旨在为经济合理利用高磷鲕状赤铁矿提供理论和技术依据。
This study puts forward a new method to separate phosphorus and iron from high-phosphorus oolitic hematite through iron nuggets process. Firstly, the physical, chemical, and microscopic characteristics of high-phosphorus oolitic hematite are investigated. Then, the reaction mechanisms of high-phosphorus hematite together with feasibility to separating phosphorus and iron by iron nugget process are discussed. Meanwhile, the experiments of high-phosphorus hematite used in rotary hearth furnace iron nugget processes are studied as well. The results indicate that the iron nugget process is a feasible and efficient method for iron and phosphorus separation of high-phosphorus oolitic hematite. The phosphorus content in iron nuggets is relatively low. Through the optimization of process parameters, the lowest of phosphorus in iron nuggets is 0.22 pct, the dephosphorization rate is above 86 pct, and the recovery of Fe is above 85 pct by the iron nugget process. This study aims to provide a theoretical and technical basis for economical and rational use of high-phosphorus oolitic hematite.