Hydrometallurgical processes, as a modern metal extraction technology, are gradually becoming an important direction for the transformation and upgrading of the metallurgical industry due to their significant advantages of being environmentally friendly and having low energy consumption. Compared with traditional pyrometallurgical processes, hydrometallurgical processes demonstrate multiple values in terms of environmental protection, energy consumption, and resource utilization, but at the same time, they also place higher demands on the corrosion resistance of equipment and process control.

The core advantages of this technology system are primarily reflected in its environmental impact. Hydrometallurgical processes, conducted in a solution environment at ambient or medium-low temperatures, fundamentally avoid the problems associated with pyrometallurgical processes, which generate large amounts of harmful gases such as sulfur dioxide and heavy metal dust, significantly reducing the pollution load on the atmosphere. Secondly, its energy consumption is significantly lower than that of pyrometallurgical processes, which rely on high-temperature reactions, aligning perfectly with the global trend towards low-carbon development. More importantly, hydrometallurgical processes can economically and effectively handle low-grade, complex, symbiotic ores that are difficult to profit from using traditional technologies, greatly expanding the boundaries of mineral resource utilization and providing technological assurance for sustainable resource supply.

However, the development of hydrometallurgical processes still faces severe challenges. The corrosive media, such as strong acids, strong alkalis, or salt solutions widely used in the process, place extremely high demands on the corrosion resistance of key equipment like reactors, pipelines, pumps, and valves. This directly increases equipment material costs and maintenance difficulty. Furthermore, the process involves numerous steps, including leaching, purification, extraction, and electrolysis, requiring extremely precise control over reaction conditions, solution composition, and impurities. Loss of control at any stage can lead to a decrease in product purity or a reduction in recovery rate.

Looking ahead, with breakthroughs in new materials technology and improvements in automation control, hydrometallurgy is expected to make progress in the development of corrosion-resistant materials and the optimization of intelligent processes. The continuous improvement of this green smelting technology will not only drive the metallurgical industry towards a cleaner and more efficient direction, but also provide a practical and feasible technical path to achieve the dual goals of resource recycling and environmental protection.