Exploration of Preparation and Dezincification Percentage of Metallic Pellets from Sintering Electric Remove Dust
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摘要: 为减少烧结资源的二次浪费, 探索用烧结电除尘灰制备为高冶金性能和低锌含量的金属化球团矿。将烧结电除尘灰配加轧钢皮、活性炭、膨润土以及有机黏结剂的混合料造成生球并经预热、焙烧后, 检测各组球团矿耐压强度及脱锌率。结果表明:随着活性炭配比的增加, 球团矿耐压强度先增加后降低, 在活性炭质量分数为3%时, 达到最高;活性炭含量为1%~4%时, 脱锌率基本不变, 为47%;在活性炭含量为5%时, 脱锌率下降;烧结电除尘灰中配加3%的活性炭能得到较好冶金性能及低锌含量的金属化球团矿。Abstract: In order to reduce the waste of sintering resources,sintering electric removal dust is explored to make metallic pellets with better metallurgical performances by adding certain appropriations of mill scale,activated carbon,bentonite and organic binder.Compressive strength and the dezincification percentage of the pellets of each group were examined after the raw pellets were preheated and baked.It is found out that compressive strength first increases and then decreases with increasing carbon amount into pellets.When the carbon content is 1%~4%,the dezincification percentage of the pellets keeps constant （47%）,but the dezincification percentage decreases at 5% carbon content. With 3% addition of activated carbon into sintering electric removal dust,i metallic pellets can be obtained with better metallurgical performances and low Zn content.
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Key words:
- sintering /
- electric removal dust /
- pellet /
- compressive strength /
- dezincification percentage
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