As the global photovoltaic (PV) industry thrives, the recycling of end-of-life (EOL) PV modules has emerged as a critical focus of the sector. Darnal, a pioneer in intelligent precious metal refining, has successfully turned EOL PV panels from "waste" into "valuables" by leveraging its innovatively developed high-efficiency recovery technology for silver (Ag), copper (Cu), and tin (Sn)-providing an innovative solution for the green circular economy.
Technical Highlights: High Efficiency, Environmental Friendliness, Full-Process Integration
(1) Intelligent Disassembly & Enrichment
Through a combined pyrolysis-physical separation process, Darnal achieves precise separation of glass, silicon wafers, and metal components in PV panels. This ensures the efficient enrichment of high-value materials such as silver grid lines and copper ribbons.
(2) Targeted Leaching & Purification
A specialized process chain is adopted: selective silver leaching with nitric acid, acid-oxygen synergistic copper extraction, and alkaline dissolution for tin refining. With this technology, the metal recovery rate exceeds 90%.
(3) Intelligent Refining Equipment
Equipped with a full-process automated control system, the solution achieves zero emission of waste gas and wastewater, fully complying with international environmental protection standards.
With technology as its "blade," Darnal taps into the "silent mine" of EOL PV panel recycling. It empowers clients to achieve a win-win situation-realizing both resource regeneration and economic benefits-allowing every gram of metal to shine with the glow of new life.
