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Microwave Drying of Nickel-containing Residue: Dielectric Properties, Kinetics, and Energy Aspects by Zhanyong Guo; Fachuang Li; Guang Su; Demei Zhai; Chenhui Liu is a Engineering article available to read on EtoBox.

What is Microwave Drying of Nickel-containing Residue: Dielectric Properties, Kinetics, and Energy Aspects about?

## Abstract Nickel-containing residue (NCR) is a hazardous solid waste from battery production lines. Recently, the interest in recovering valuable metals from NCR has increased because sustainable utilization of resources is more and more valued. Drying is a key part of the recovery process. In this study, we measured the dielectric properties of the NCR for different moisture contents and temperatures using the cavity perturbation method at 2.45 GHz. The microwave absorption characteristics of NCR had a positive correlation with the moisture content, while it was less efficient in the 20-180°C temperature range. Then found that the microwave drying data at different microwave powers (400-700 W) and for different sample weights (60-120 g) have a better fit with the Midilli-Kucuk model. The activation energy (Ea) was received as 9.76 W/g using an exponential expression based on the Arrhenius equation. Finally, the energy consumption reduce 110 W·h/kg than that of drying with a single microwave power by optimizing the microwave drying process.

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Author

Zhanyong Guo; Fachuang Li; Guang Su; Demei Zhai; Chenhui Liu

Publisher

Walter de Gruyter GmbH

Published

2019

Language

EN

Field

Engineering (Physical Sciences)