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本文分析和论述了攀枝花链-回球团的干燥、予热、氧化、焙烧和脱硫等几个主要问题的研究结果。例如:精矿必需再磨,不要采用粗细混合的混合精矿;予热可以在900℃以下进行,以便尽可能地提高其氧化程度;回转窑中的氧化阶段非常重要,只有高氧化度才能保证球团结构均匀,防止形成同心裂纹;链一回法工艺脱硫率高,不仅三氧化二铁而且四氧化三铁在熔剂性球团的脱硫过程中均起积极作用;攀枝花球团在低温还原过程中会出现异常膨胀,添加适量的白云石和提高碱度能有效地抑制它。
This paper analyzes and discusses the research results of Panzhihua chain-pellet drying, preheating, oxidation, roasting and desulfurization. For example: the concentrate must be reground, do not use the mixed thickness of the mixed concentrate; preheating can be carried out below 900 ℃, in order to maximize its oxidation degree; oxidation stage in the rotary kiln is very important, only the high degree of oxidation can be guaranteed The pellet structure is uniform, to prevent the formation of concentric cracks; chain back to the process of desulfurization rate is high, not only ferric oxide and ferroferric oxide in the flux of the desulfurization process play a positive role; Panzhihua pellet in the low temperature reduction process In the abnormal expansion will appear, add the right amount of dolomite and improve alkalinity can effectively inhibit it.