Solar and Photovoltaic Panel Recycling: The Importance of Glass Quality

Stokkermill, a leader in the design of solar panel recycling systems

Recycling solar panels requires experience and highly specialized technologies capable of optimizing material recovery and ensuring maximum glass purity, which accounts for approximately 71% of each panel’s total weight.

It is estimated that by 2050, around 80 million tons of glass from recycled photovoltaic panels will be generated globally. This substantial quantity must be efficiently reintegrated into production cycles, making a concrete contribution to the development of a circular economy.

Various industrial sectors are already preparing to absorb this significant new source of secondary raw materials. As often happens, technical challenges become opportunities for companies that are ready to innovate and tackle technological complexity.

With a long-standing focus on material separation processes, Stokkermill offers a wide range of integrated solutions and advanced equipment designed to deliver excellent results in both quality and operational efficiency.

We know that technologies with high energy consumption, high costs, or low efficiency can hinder the development of a truly sustainable recycling process—both environmentally and economically.

Classification of recycled glass fractions

The glass fractions obtained through recycling are generally divided into three size categories:

➢  Coarse fraction: particle size > 2 mm

➢  Intermediate fraction: particle size between 1 and 2 mm

➢  Fine fraction: particle size < 1 mm

Delaminator mills

Thanks to the high purity levels achieved using Stokkermill technologies, the coarse fraction can be revalorized in various industrial sectors. This performance is made possible by proprietary systems including density separation, particle size separation, air separation, optical sorting, electrostatic separation, and eddy current systems.

The intermediate and fine fractions are used in other applications, also benefiting from the presence of silicon, which increases their commercial value.

Stokkermill's delamination mills play a key role in the initial stages of material cleaning and refinement, significantly contributing to the overall quality of the recycled output.

The final quality of the recovered glass depends on the technologies used, which can be selected and combined according to the specific needs of the end user and the target markets. These factors are influenced by the presence of local industrial supply chains, as well as by specific regulations and standards.

All processresearch and optimization are carried out at StokkermilLab, ourin-house research center equipped with precision machinery entirely designedand built by Stokkermill.

👉 Explore our laboratory machines forprecision separation

🔍https://www.stokkermill.com/laboratory-research/macchine-laboratorio-separazione-precisione

For more information on our range ofphotovoltaic panel recycling systems, please contact the Stokkermill teamat:  📩 info@stokkermill.com