空气加湿对烧结性能指标的影响

Air Humidification Performance of the Sintered Test

为了探索空气加湿对钒钛磁铁精矿烧结性能的影响,在实验室进行了烧结料层表面空气加湿试验,其结果为,增产效果最好的是点火后18 min喷水0.4%,利用系数达到1.31 t/(m2·h),与基准期对比增产率达到15.94%;其次是不喷水的二次点火烧结,利用系数1.281 t/(m2·h),增产率13.40%。综合评价效果最好的是点火后18 min喷水0.4%,综合指数达98.54,其次是实行二次点火烧结(不喷水)综合指数98.50,第三是点火后18min喷水0.3%,其综合指数97.33,这三种组合的综合效果均高于基准期96.25。

In order to explore the effect of air humidification on sintering performance of vanadium-titanium magnetite concentrate,sinter layer surface air humidification test had been carried out in the laboratory. From the experimental results it is found out thatspraying 0. 4% water after 18 minutes of the ignition,generated the maximum yield where utilization coefficient is 1. 31 t /（ m2·h） and yield increases by 15.94% compared with the benchmark; At the same time the second best yield has been achieved when secondary ignition sintering is completed without water spray,consequently utilization coefficient is 1. 281 t /（ m2·h） and yield increases by 13. 40%. On the other hand,when a composite index is used for evaluation,the best result comes from the 0. 4% water spray after 18 minutes ignition with composite index of98. 54,followed by implementation of second ignition sintering（ not spray） with composite index of 98.50,and the worst case is 0. 3% water spray after 18 minutes ignition with its composite index of 97. 33.Nevertheless,all three processes can produce higher composite index than the baseline of 96. 25.