from the conferences organized by TANGER Ltd.
The paper characterizes selected lead-based wastes occurring in the metalworking industry, such as wire manufacturers using lead baths in the heat treatment process. Attention is focused on the possibility of using the proportion of lead in direct metal form, which can occur in certain types of waste. For waste, the content of selected metals and the form of their occurrence was determined. For waste with lead in metallic form, pyrometallurgical tests were performed to obtain the proportion of lead from industrial waste. Subsequently, the purity of the obtained product was determined, which is related to its use directly back into the given technological procedure. It was found, that with remelting of the given type of waste at relatively low temperatures it is possible to obtain an interesting proportion of pure lead. The secondary lead has sufficient purity and can be reused and thus support the sustainability of the process. Conversely, certain parts of waste contain such a small amount of metals, including lead, that it would be possible to use them in a different way than to pass them into the system as waste containing heavy metals. These wastes must then be recycled in specialized plants. Companies are currently reassessing their established procedures for dealing with production waste and looking for new possibilities for using waste directly in their plants. Recovering the share of lead in the process and the subsequent possibility of reassessment of the dangerousness of certain shares of industrial waste is a way to improve the company's position in waste management and the use of raw materials.
Keywords: Waste with lead, metals recovery, secondary lead, heavy metals, sustainability© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.