In today's rapidly developing technology era, the update and replacement of electronic products are happening at an increasingly rapid pace, resulting in an ever-increasing number of waste circuit boards. Waste circuit boards contain a large amount of heavy metals, rare metals, and toxic and harmful substances. If they are randomly discarded or improperly handled, it will not only cause a great waste of resources, but also seriously pollute the environment. The emergence of water selection recycling equipment for waste circuit boards provides an effective solution to this problem. The water selection recycling equipment for waste circuit boards is a comprehensive set of equipment integrating a variety of advanced technologies. It mainly includes multiple parts such as a crushing system, a water selection system, and a separation system. First, through the crushing system, the waste circuit boards are coarsely and finely crushed to form particles with suitable particle sizes. This process requires precise control to ensure the effectiveness of the subsequent water selection. The water selection system is the core part of this set of equipment. It uses the differences in buoyancy and settling speed of different substances in water to preliminarily separate the metals and non-metallic substances in the circuit boards. During the water selection process, metal particles, due to their higher density, will quickly settle to the bottom of the water, while non-metallic substances will float on the surface of the water or flow with the water. Through clever design and reasonable water flow control, the preliminary separation of metals and non-metals can be efficiently achieved. The separation system further refines the products after water selection. It can distinguish different types of metals, such as copper, aluminum, and iron, for subsequent recycling and utilization. At the same time, for the separated non-metallic substances, further processing can also be carried out to extract valuable components or conduct harmless treatment. The water selection recycling equipment for waste circuit boards has many significant advantages. It realizes the efficient recycling and utilization of resources. By recycling and reusing metals and other valuable substances in waste circuit boards, it reduces the dependence on primary resources and lowers production costs. The processing process of this equipment is relatively environmentally friendly. By using water selection, it avoids the large amount of harmful gases and waste residues generated in traditional fire-based recycling, reducing environmental pollution. In addition, this set of equipment also has the characteristics of high automation, simple operation, and large processing capacity, which can meet the needs of large-scale waste circuit board recycling. However, the water selection recycling equipment for waste circuit boards also faces some challenges in its application. For example, the upfront investment in the equipment is relatively large, which may pose a financial pressure for some small-scale recycling enterprises. The composition of waste circuit boards is complex, and the metal content and composition of circuit boards from different sources vary greatly, requiring continuous optimization of the equipment's process parameters to improve recycling efficiency. The water selection recycling equipment for waste circuit boards provides an efficient and environmentally friendly solution for the recycling and processing of waste circuit boards. With the continuous advancement and improvement of technology, it is believed that it will play an increasingly important role in the field of resource recycling and make greater contributions to sustainable development.