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在氮气保护气氛下,利用微波加热对转炉钢渣进行碳热还原试验,研究了还原温度、碳当量、粒度、还原时间对磷在渣、铁、气相中分布的影响。结果表明:微波碳热还原钢渣可得到致密的Fe-C-Mn-P铁珠。随着还原温度、碳当量的提高和还原时间的延长,进入铁中和气相的磷增多,残渣的磷减少。随着钢渣粒度的减小,进入铁中的磷增多,残渣和气相的磷减少。还原后残渣的XRD和SEM分析显示无磷存在。为转炉钢渣的高效利用奠定了基础。
The carbon steel thermal reduction test was carried out by microwave heating under nitrogen atmosphere. The effects of reduction temperature, carbon equivalent, particle size and reduction time on the distribution of phosphorus in slag, iron and gas were studied. The results show that compact Fe-C-Mn-P iron beads can be obtained by microwave carbothermal reduction of steel slag. With the reduction temperature, the increase of carbon equivalent and the extension of the reduction time, the amount of phosphorus entering into the iron and gas phase increases and the phosphorus in the residue decreases. With the decrease of the slag size, the phosphorus entering the iron increases, and the phosphorus in the residue and the gas phase decreases. XRD and SEM analysis of the residue after reduction showed the absence of phosphorus. For the efficient use of converter slag laid the foundation.