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链篦机-回转窑法氧化球团矿试验研究 总被引:5,自引:0,他引:5
在对程潮磁铁精矿和膨润土的物化性能,造球性能,生球爆裂温度,生球干燥和预热制度,球团焙烧制度进行实验室研究的基础上,进行了链篦机-回转窑焙烧扩大性试验研究,并对球团固结机理进行了研究,确定了生球干燥预热工艺,采用二室三段抽风鼓风相结合的干燥预热制度,采用预热球团入回转窑,焙烧温度为1250-1280℃,焙烧时间15min时,球团矿的TFe65.47%,FeO0.73%,抗压强度3040N/个,转鼓强度95.3%,磨损指数2.67%,球团矿的冶金性能良好。 相似文献
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烧结生产控制专家系统 总被引:6,自引:2,他引:4
通过对专家系统在烧结生产过程中的应用研究,探讨了实时系统知识库和推理机的构成,运行方式及接口设计的实现,阐述了烧结生产操作控制的方法和化学成分控制的方法,并与N-90控制系统相配合,达到了科学整个烧结生产过程的目的。 相似文献
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Burnt lime and serpentine were incorporated into the sinter mix to improve high iron and low silica sintering. Optimization of how to use burnt lime including dosage of burnt lime, moisture of sinter mix, hydrating and granulation time was performed. Evaluations of sinter characteristics including sinter mineralogy, reducibility, low temperature reduction degradation, softening and melting down properties were carried out. Compared with the results of traditional process in base case, the tumbling index (T7) is increased by 1. 53%-2. 33% through proportioning high ratio of burnt lime or adding serpentine in the sinter mix. It is shown that effective granulation, better permeability and improved high temperature reactivity in the sinter bed are achieved, resulting in an increase in 3. 13% - 5. 10% calcium ferrite occurring in acicular and columnar shape and decrease in glass phase, and with the reducibility index(RI) being increased by 1. 65%- 3. 25%. 相似文献
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铁矿烧结过程分为点火段、中间段(点火结束至烟气温度升温前)和升温段(烟气温度开始上升至达到最高温)3个阶段,通过烧结杯模拟实验研究了各阶段烟气中微细颗粒污染物的排放浓度及其特性.研究结果发现,点火段、中间段微细颗粒污染物的质量浓度较低,在升温段则显著上升;各阶段切割粒径d50=0.7μm粒级颗粒表面形貌也存在着差异,其中点火段和中间段的颗粒主要是由球形颗粒组成,颗粒轮廓清晰没有明显的聚结现象,而升温段d50=0.7μm粒级颗粒主要为不规则的絮状体,颗粒之间易聚结形成团聚状;升温段d50=0.7μm粒级颗粒中F、S、K、As、Pb元素的含量明显高于点火段和中间段的含量,而Fe元素则在点火段和中间段的含量较高,在升温段含量相对较低. 相似文献
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