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- W2390228136 abstract "Reduction behavior of high-phosphorus oolitic hematite was evaluated by performing a series of deep reduction tests followed by magnetic separation using coal slime as reductant. The effects of different coal slime,the mineral composition of coal slime ash and the roasting temperature on the iron reduction of deep reduction process were investigated. The results show that the main compositions of coal slime ash are quartz,gypsum and silicate minerals. The optimum iron grade of 91. 35% with recovery of 81. 13% and phosphorus content of the direct reduced iron( DRI) of 0. 076% is obtained using Tianjin( T) coal slime as reductant at dosage of 20%. With the analysis of XRD and SEM-EDS,when the Tianjin and Hongshan( H) coal slime is used as reductant,the iron bearing minerals in raw ore are reduced to metallic iron during deep reduction. The quartz existed in coal slime ash accelerates the reduction of fluorapatite to phosphorus,which significantly increases the P content in DRI and negatively impacts the dephosphorization of DRI." @default.
- W2390228136 created "2016-06-24" @default.
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- W2390228136 date "2015-01-01" @default.
- W2390228136 modified "2023-09-23" @default.
- W2390228136 title "Effects of coal slime types on iron recovery from high-phosphorus oolitic hematite by deep reduction" @default.
- W2390228136 hasPublicationYear "2015" @default.
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