Abstract

Recently, microwave energy has attracted increasing interest for accelerating thermal reactions. This study investigated the impact of microwave heating on the zinc recovery rate from electric arc furnace (EAF) and chromium converter (CRC) dusts. The results indicated that microwave heating required a lower temperature to recover zinc from EAF and CRC dusts compared with that in conventional thermal heating. For CRC dust, zinc recovery rates of 37.84% and 97.43% were obtained with conventional and microwave heating, respectively, at 850 °C. For EAF dust, zinc recovery rates of 79.88% and 98.20% were obtained with conventional and microwave heating, respectively, at 850 °C. The improved zinc recovery in this study was concluded to results from the rapidity of microwave heating and the interactions between the electromagnetic microwave field and the molecules of heated materials.

Graphical Abstract

中文翻译：

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从常规加热改为微波加热，提高炼钢粉中锌的回收率

摘要

近来，微波能引起越来越多的兴趣以加速热​​反应。这项研究调查了微波加热对电弧炉（EAF）和铬转化器（CRC）粉尘中锌回收率的影响。结果表明，与常规热加热相比，微波加热需要较低的温度才能从EAF和CRC灰尘中回收锌。对于CRC粉尘，在850°C的常规加热和微波加热下，锌的回收率分别为37.84％和97.43％。对于电弧炉粉尘，常规加热和微波加热在850°C时锌的回收率分别为79.88％和98.20％。

图形概要