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首页> 外文期刊>Journal of Residuals Science & Technology >Dephosphorization in the Reduction and Melting Separation of High Phosphorus Hematite Carbon Bearing Pellets
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Dephosphorization in the Reduction and Melting Separation of High Phosphorus Hematite Carbon Bearing Pellets

机译：高磷赤铁矿含碳粒料还原和熔融分离中的脱磷

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摘要

The rotary hearth furnace iron nugget process is a new technology with a huge potential to efficiently utilize high phosphorus hematite. In this paper, the influences of the basicity and additives on the phosphorus content and distribution in the iron nuggets and the slag were investigated. At first CaCO3 was added to the pellets and then Na2CO3 and CaF2 were also added in the experiments. The experimental results showed that the increase in the basicity and the addition of Na2CO3 and CaF2 were shown to be effective to inhibit the apatite reduction in high phosphorus iron ores and to reduce the phosphorus content in the nuggets. When the pellets containing 4% Na2CO3 and 4% CaF2 with the basicity at 1.4 were reduced at the temperature of 1400°C for 12 min, the phosphorus content in the iron nuggets was only 0.4% and the dephosphorization rate reached 81.2%.
机译：旋转炉底炉铁块工艺是一项新技术，具有高效利用高磷赤铁矿的巨大潜力。本文研究了碱度和添加剂对铁块和炉渣中磷含量和分布的影响。首先，将CaCO3添加到沉淀中，然后在实验中也添加Na2CO3和CaF2。实验结果表明，增加碱度和添加Na2CO3和CaF2可以有效抑制高磷铁矿石中磷灰石的还原并降低熔核中的磷含量。当在1400℃下将含4％Na2CO3和4％CaF2的碱度为1.4的球团还原12分钟时，铁块中的磷含量仅为0.4％，脱磷率达到81.2％。

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