Study of Direct Reduction and Synchronous Dephosphorization for High-phosphorus Oolitic Hematite
Study of Direct Reduction and Synchronous Dephosphorization for High-phosphorus Oolitic Hematite
复制标题
DOI：
--
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Li Zhi-xiang
中科院分区：
文献类型：
--
作者：
Li Zhi-xiang
对鄂西某含铁43.58%、含磷0.83%的宁乡式高磷鲕状赤铁矿进行了直接还原焙烧同步脱磷试验研究，考察了焙烧温度、还原剂用量、焙烧温度、焙烧温度、还原剂用量、焙烧温度、焙烧温度、还原剂用量、焙烧温度、还原剂用量、焙烧温度、焙烧温度、还原剂用量、焙烧温度、焙烧温度、焙烧时间、焙烧温度、焙烧时间、焙烧时间、焙烧温度、焙烧时间、焙烧温度、焙烧时间、焙烧时间、焙烧温度、焙烧时间焙烧时间和脱磷剂用量对DRI指标的影响对直接还原铁进行了研究，在以下条件下进行直接还原焙烧和磁选，可获得铁品位为91.58%、回收率为84.96%、磷品位为0.049%的铁精矿：还原剂用量17.5%，TS用量50%，NCP用量2.5%，焙烧时间60 min，一段磨矿粒度89.56%~ 0.074 mm，磁场强度87.58 kA/m，二段磨矿粒度100%~ 0.025 mm，磁场强度87.58 kA/m。
Experimental studies on direct reduction roasting and synchronous dephosphorizaton were conducted for some Ningxiang type high-phosphorus oolitic hematite with iron content of 43.58%,phosphorus content of 0.83% in west of Hubei Province.The effects of roasting temperature,the reductant dosage,roasting time and dephosphorizer dosage on the index of DRI(Direct Reduced Iron) were investigated.Iron concentrates with iron grade of 91.58%,recovery of 84.96% and phosphorus grade of 0.049% can be obtained through direct reduction roasting and magnetic separation under conditions as follows: reductant dosage of 17.5%,TS dosage of 50%,NCP dosage of 2.5%,roasting time of 60 min,first-stage grinding size of 89.56%-0.074 mm with magnetic field intensity of 87.58 kA/m,second-stage grinding size of 100%-0.025 mm with magnetic field intensity of 87.58 kA/m.