This study focused on improving recycling of carbon-bearing dusts from integrated steel plants by the composite agglomeration process (CAP), in which four types of the dusts were prepared as pelletized feed, while the other raw materials were used as matrix feed for sintering to produce agglomeration product as a substitute for traditional iron ore sinter. It was found that the carbon distribution in the pelletized feed and matrix feed and segregation of pelletized feed in the burden layer strongly affected the process. When the total carbon content of the feeds was 3.22 wt%, the proper carbon content ratio of pelletized feed to matrix feed was 1.65–2.48. At this moment, optimizing the segregation of pelletized feed which contained 6.64 wt% carbon (named DP-4) in the sintering burden layer would improve the quality indexes of agglomeration product with higher carbon utilization efficiency, i.e., lower total carbon consumption.

Graphical Abstract

中文翻译：

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铁矿石烧结复合团聚工艺中含碳粉尘的有效利用

本研究的重点是通过复合团聚工艺（CAP）改善综合钢厂含碳粉尘的回收利用，其中四种粉尘作为球团饲料，而其他原料作为基质饲料用于烧结生产烧结产品替代传统的铁矿石烧结矿。发现颗粒饲料和基质饲料中的碳分布以及颗粒饲料在料层中的分离强烈影响了该过程。当饲料的总碳含量为 3.22 wt% 时，颗粒饲料与基质饲料的合适碳含量比为 1.65-2.48。此时，优化含有6的颗粒饲料的分离。

图形概要