Selection of technological equipment for complex processing of dross

Abstract

The article analyses methods of dross processing with obtaining marketable products. In recent years, along with pyrometallurgical methods, hydrometallurgical methods are beginning to develop. The authors present a new waste-free technology for processing zinc-plating waste aimed at obtaining marketable products. In the work the technological scheme of new, combined, waste-free technology of processing of zinc smelting waste with obtaining of marketable products is constructed. Technological calculations on dross processing for specific productivity of 100 tonnes per day are made, recommendations on design of the enlarged installation and on operation of the technology are given. Technological calculations were carried out using a specially developed program that considers the optimum parameters and modes of technology. This allows the authors to obtain accurate data and estimates of the dross processing process and optimize the operation of the plant. The use of the developed technology of complex dross processing will allow to stimulate the development of zinc production in the republic due to involvement of dross in processing as an additional source of raw materials. Utilization of dross with obtaining of marketable products with high added value will allow to release considerable areas of land occupied by it. Overall, the paper emphasises the potential of the new technology to address the problems of dross processing, stimulate the growth of the zinc industry and reduce the environmental impact of dross accumulation.