The Advantages of Dry Separation Recycling for Waste Circuit Boards-Information-Jiangxi MingxinAmid the soaring growth of electronic waste, the standardized recycling of waste circuit boards has become a crucial link in practicing green development. The dry separation process, with its unique advantages, has injected an efficient and environmentally friendly solution into this field. Compared with traditional wet or chemical treatment processes, dry separation recycling of waste circuit boards demonstrates significant value in multiple aspects such as environmental protection, resource utilization, and economic benefits.
The core advantage of the dry separation process lies in its ultimate environmental friendliness. The entire process adopts full physical separation technology without the need for water washing, fundamentally eliminating wastewater pollution and avoiding the damage to soil and groundwater caused by the penetration of heavy metal ions with water. At the same time, the supporting pulse bag dust removal system can achieve a dust collection rate of over 99.9%. Combined with activated carbon adsorption and purification technology, both dust and exhaust gas emissions are far below national standards, completely eliminating air pollution problems such as dioxins and toxic gases caused by open-air incineration or simple dismantling. This characteristic of zero chemical addition and zero secondary pollution makes it fully compliant with strict global environmental regulations, helping enterprises avoid compliance risks while safeguarding the ecological environment and human health.
In terms of resource recovery efficiency, the dry separation process can be called an efficient excavator of the "urban mine". Through a three-stage crushing system, the circuit boards are accurately crushed into 2-5mm particles. Then, with the dual action of air separation and high-voltage electrostatic separation, precise separation of metals and non-metals is achieved based on differences in density and conductivity. The metal recovery rate can exceed 98%, and the copper purity is as high as 95% or more. Even fine particles of precious metals such as gold and silver can be fully recovered. The separated non-metallic resin powder can also be used to make insulating materials, wood-plastic products, etc., realizing full-component resource utilization. This not only reduces the accumulation of solid waste but also greatly reduces reliance on primary mineral resources — the energy consumption for recycling 1 ton of copper is only 10%-15% of that of primary ore smelting, corresponding to an 85% reduction in carbon emissions, providing strong support for the achievement of the "double carbon" goal.
The advantages in economic benefits and adaptability further highlight the practical value of the dry separation process. The metal content in waste circuit boards accounts for about 30%, and the resource value of some industrial controller circuit boards can even reach 800,000 yuan per ton. The efficient recovery through the dry separation process can bring considerable economic benefits to enterprises. At the same time, this process has extremely strong adaptability, capable of handling various types of waste such as mobile phone boards, computer motherboards, and home appliance circuit boards. The single-machine output is 200-1000 kilograms per hour, and it features high automation, low energy consumption, and small floor space, which can meet the needs of recycling enterprises of different scales.
Dry separation recycling of waste circuit boards is based on environmental protection, focuses on efficiency, and takes value as the core. It not only solves the problem of electronic waste pollution but also achieves a win-win situation between resource recycling and economic benefits. It has become an important support for promoting the development of the circular economy and opened up a sustainable path for the green treatment of electronic waste.