Composite Dephosphorizer Microwave High-phosphorus Iron Ore Roasting Process
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摘要: 为实现高磷铁矿粉在烧结过程中气化脱磷,促进高磷铁矿的开发利用,试验选用鲕状高磷赤铁矿为原料,采用微波加热方式研究了复合脱磷剂成分及用量对气化脱磷率的影响。结果表明,煤种选用烟煤、配碳量为5%、SiO2加入量为0.75%、CaCl2加入量为1.5%、碱度为1.4时,能使高磷铁矿粉在微波场中气化脱磷率达到20.36%。通过X射线衍射仪(XRD)对焙烧产物进行检测得知,过量加入CaCl2会产生Ca5(PO4)3Cl,不利于气化脱磷的进行。Abstract: In order to achieve high gasification dephosphorization of high-phosphorus iron ore after sintering,promote the development and utilization of high-phosphorus iron ore,the influence of material com-position on the gasification dephosphorization rate had been investigated via microwave heating. When u-sing bituminous coal,5% C/O,0.75% SiO2 addition,1.5% CaCl2 addition and 1.4 of alkalinity, high-phosphorus iron ore fines could be achieved 20.36% of gasification dephosphorization in the microwave field. X-ray diffraction(XRD) results on the calcined product found out that excessive addition of CaCl2 would produce Ca5(PO4)3Cl, and not favorable for gasification dephosphorization.
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