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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%、SiO_2加入量为0.75%、CaCl_2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CaCl_2会产生Ca_5(PO_4)_3Cl,不利于气化脱磷的进行。
In order to realize high-phosphorus iron ore gasification dephosphorization during sintering and promote the development and utilization of high-phosphorus iron ore, the oolitic high-phosphorus hematite ore was selected as raw material and the composition and dosage of the composite dephosphorization agent Impact on gasification dephosphorization. The results show that the high-phosphorus iron ore powder can be gasified and dephosphorized in the microwave field by using 5% coal ash, 0.75% SiO 2, 1.5% CaCl 2, and alkalinity 1.4% Rate reached 20.36%. The calcined product was detected by X-ray diffractometer (XRD). It was found that excessive addition of CaCl 2 produced Ca_5 (PO_4) _3Cl, which was not conducive to the gasification dephosphorization.