Abstract
The current global primary zinc stocks are estimated to last for approximately 20 years. For this reason, the recycling and processing of waste (especially steelmaking dust) containing zinc are currently necessary, and this will remain the case in the future. The main objective, we deal with in this article is the experimental research on electric arc furnace dust (EAFD) compounds which may potentially result in the commercial manufacture of products in the electrotechnical industry. In our work we focus on the production of ZnO-based varistors used in surge protection devices (SPD), which are the current trend in the world. ZnO, a resultant product of hydrometallurgical recycling of zinc-containing dust produced by the remelting of steel waste in an EAF, was used for this research. From the resulting product containing 79.04% Zn, five varistor samples were prepared. Subsequently, their electrical characteristics were measured and calculated on these samples. From the measured electrical parameters, the non-linear characteristic typical of voltage-dependent resistors–varistors is evident. Based on the results of the electrical characteristics, we conclude that the ZnO product, which is the output of hydrometallurgical recycling of EAFD, is a potentially suitable material for use in the production of ZnO varistors in the future.
Published Version
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