复合脱磷剂对微波焙烧高磷铁矿过程的影响

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基金项目:

国家自然科学基金资助项目(51274081)；华北理工大学创新项目(2016S23)；华北理工大学科学研究基金资助(Z201508)

Composite Dephosphorizer Microwave High-phosphorus Iron Ore Roasting Process

Hebei Key Laboratory of Modern Metallurgical Technique, College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063009, Hebei, China

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。
- 烧结 /
- 高磷铁矿粉 /
- 微波 /
- 复合脱磷剂 /
- 气化脱磷
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.
- roasting /
- high phosphorus iron ores /
- microwave /
- composite dephosphorizer /
- gasification dephosphorization