Recovering Precious Metals From Telecom Base Station Scrap With ALS2
Telecom networks generate a distinctive category of electronic waste. When base stations, radio units, power modules and transmission equipment are upgraded, retired hardware leaves behind printed circuit boards, connectors, cables, plated contacts, heat sinks and mixed metal assemblies. The material may look predominantly aluminium, steel and copper, yet small quantities of gold, silver and other valuable metals can be distributed across high-value components.
The ALS2 approach offers a route for treating this type of scrap without relying on conventional acid-based refining. Developed by Ikoi S.p.A., the technology uses acidless separation principles to support precious-metal recovery from electronic waste and WEEE streams. Its value in a telecom recycling operation lies in combining resource recovery with a cleaner process concept, reduced chemical handling and the possibility of compact plant design.
This case study follows a representative base station scrap stream from collection through sorting, preparation and recovery. It focuses on the decisions a recycler would need to make before introducing an ALS2 process line, while recognising that final yields depend on the equipment generation, component mix and laboratory characterisation.
Why Telecom Scrap Requires Careful Separation
A decommissioned base station is rarely a uniform feedstock. A single shipment may contain radio-frequency boards, control cards, power-supply units, backplanes, copper wiring, coaxial connectors, fans, shielding, batteries and structural metal. Some assemblies contain plated contacts or components with precious-metal content, while others contribute mainly copper, aluminium, iron or polymer fractions.
This variation affects both commercial value and process stability. Sending all material through the same treatment route can dilute the richest fractions and increase the volume of material requiring downstream handling. A more effective approach begins by separating equipment according to function and composition, then isolating the parts most likely to contain recoverable precious metals.
Telecom boards often have a relatively high concentration of connectors, edge contacts and integrated components compared with ordinary mixed consumer electronics. Gold may be present in contact plating and bonding applications, silver in selected electrical components, and palladium in some electronic components and surface finishes. These metals are valuable in small quantities, making accurate sampling essential.
Building A Representative Feedstock
The first stage of an ALS2 case study is an inventory of the incoming scrap. Operators can record the origin, equipment type, age, manufacturer, estimated mass and condition of each batch. Retired 2G, 3G, 4G and 5G infrastructure may have different board designs and component profiles, so separating generations can make analytical results more meaningful.
Manual dismantling or controlled mechanical preparation removes batteries, capacitors, hazardous components, cables and bulky structural parts before precious-metal-bearing fractions are processed. Steel cabinets, aluminium heat sinks and large copper conductors can often follow established metal recycling routes. The remaining boards and contact-rich components form a more concentrated electronic feed.
Size reduction must be managed carefully. Excessive shredding can create dust, liberate fibres and mix plastics with metal-rich particles. A staged approach—inspection, dismantling, selective liberation and controlled sizing—helps preserve valuable fractions and improves the consistency of the material entering separation. Dust collection and enclosure are important for worker protection and housekeeping.
How ALS2 Fits The Recovery Route
ALS2 is designed around acidless separation, providing an alternative to processes that depend on strong mineral acids to dissolve and recover metals. For a telecom scrap application, the technology can be positioned after dismantling and feed preparation, where the most suitable board and contact fractions are presented to the treatment system in a controlled form.
The central process objective is to separate valuable metallic content from non-metallic and lower-value material while creating manageable output streams. Depending on the feed composition and plant configuration, these streams may include a precious-metal-bearing fraction, copper-rich material, ferrous metals, aluminium, plastics and residues requiring additional assessment.
A compact recovery plant can be useful for regional telecom operators, equipment refurbishers and specialist WEEE recyclers. Base station scrap is often generated in project batches rather than as a continuous household-electronics flow. A modular process can therefore be matched to dismantling capacity and expanded as collection volumes increase.
The exact operating sequence, residence times, recovery rates and output specifications should be established through testing. Representative samples need chemical and physical characterisation before scale-up, because plated connectors, multilayer boards, solder, resins and coatings can respond differently during processing.
Comparing The Process Options
The most relevant comparison is not simply between one machine and another. It involves the complete recovery chain: preparation, chemical inputs, emissions control, worker safety, separation quality, residue management and the value of the recovered products. Acid-based refining can be highly established, but it may involve corrosive reagents, complex effluent treatment and demanding permitting requirements.
ALS2’s acidless concept can simplify the chemical profile of a recovery line and reduce dependence on aggressive liquid reagents. That does not eliminate the need for industrial controls. Feed preparation, dust management, electrical safety, residue classification and quality assurance remain essential parts of responsible operation.
| Evaluation area | ALS2 acidless separation | Conventional acid-based refining |
|---|---|---|
| Primary fit | Prepared electronic and WEEE fractions, including telecom boards and contacts | Broad range of metal-bearing materials, depending on refinery design |
| Chemical profile | Designed to avoid conventional acid dissolution as the central separation route | Uses acids or other aggressive reagents to dissolve selected metals |
| Feed preparation | Selective dismantling and controlled sizing support consistent treatment | May accept varied feeds but still benefits from concentration and sorting |
| Process outputs | Separated metal-rich and non-metallic fractions for further handling or refining | Dissolved-metal solutions, precipitates and liquid or solid residues |
| Environmental controls | Dust, residues, energy use and output quality still require monitoring | Corrosive vapours, liquid effluent and reagent storage require extensive controls |
| Plant model | Suitable for compact or modular recovery configurations | Often associated with larger, chemically intensive refinery infrastructure |
| Commercial focus | Recover value while reducing reliance on acid-based processing | Maximise dissolution and refining efficiency for compatible feedstocks |
| Validation requirement | Pilot testing is needed to confirm recovery, purity and throughput for each scrap mix | Established chemistry still requires feed-specific testing and control |
For a telecom operator or recycler, the business case should include avoided disposal costs, recovered metal value, labour for dismantling, energy consumption, residue treatment and compliance expenses. A higher theoretical metal content does not automatically produce a better result if the feed is inconsistent or the recovered fraction requires expensive additional refining.
Measuring Recovery From Base Station Scrap
A credible case study needs a clear mass balance. Each incoming batch should be weighed, and the output streams should be tracked by mass and composition. Samples from boards, connectors, cable fractions and residues can be analysed for copper, gold, silver, palladium and other relevant elements. Sampling should follow a documented procedure, since precious metals are rarely distributed evenly through a shipment.
Performance should be assessed using several indicators rather than a single recovery percentage. These can include precious-metal recovery, concentration in the output fraction, purity, throughput, energy use, labour hours, residue generation and the percentage of material diverted from landfill or lower-value disposal. The value of recovered base metals should also be included, particularly copper and aluminium.
A pilot campaign can compare different preparation strategies. For example, a recycler may test intact boards against boards with connectors removed, or compare a coarse fraction with a more tightly sized material. The objective is to identify the point at which additional dismantling and size reduction create genuine value rather than simply increasing labour and operating costs.
Traceability is important when equipment comes from network operators or infrastructure contractors. Serial numbers, asset records and chain-of-custody procedures can support data security, regulatory compliance and proof that retired equipment has been processed correctly. This is especially relevant when boards may contain stored information or configuration data.
Designing A Compact Recovery Plant
A practical ALS2 installation for telecom scrap would normally include receiving, inspection, dismantling, sorting, controlled feed preparation, the separation unit, output collection and quality-control points. The layout should keep incoming equipment, hazardous components, processed feed and recovered fractions clearly separated. It should also allow maintenance access without interrupting the entire recycling operation.
The plant can be integrated into an existing WEEE facility where pre-treatment, metal sorting and logistics are already available. In that model, ALS2 would serve as a specialist stage for selected electronic fractions rather than replacing every recycling process on site. This can improve utilisation and allow operators to direct low-value materials to established downstream channels.
Useful design priorities include:
- Segregate boards, connectors and contact-rich parts before treatment.
- Use representative sampling and laboratory analysis for every major feed category.
- Install enclosed handling and effective dust collection around size reduction.
- Track precious-metal, base-metal and residue outputs through a documented mass balance.
- Validate recovered-product quality before signing long-term offtake agreements.
Operators should also plan for changing feed composition. A telecom replacement programme may produce a large volume of one equipment family for several months, followed by smaller batches of unrelated network hardware. Flexible recipes, adjustable preparation steps and modular capacity can help the facility remain useful beyond a single decommissioning project.
Environmental And Circular-Economy Value
Recovering metals from base station scrap reduces the need to dispose of complex electronic assemblies and returns finite resources to industrial supply chains. Gold, silver, palladium and copper recovered from existing equipment can displace part of the demand for newly mined materials, while aluminium and steel fractions can be directed to established secondary-metal markets.
The acidless character of ALS2 supports a process narrative centred on safer and cleaner precious-metal recovery. It can reduce reliance on acid storage and liquid treatment compared with conventional routes, although the total environmental profile must still be measured across energy consumption, transport, dust control, residues and downstream refining.
For the European recycling sector, this approach aligns with the broader aims of resource efficiency and improved WEEE recovery. The ALS2 project’s connection with the European Union’s Horizon 2020 research and innovation programme reflects the wider effort to develop technologies that make secondary raw materials more accessible and recycling operations more sustainable.
A telecom base station is therefore more than obsolete infrastructure. With disciplined dismantling, accurate characterisation and a suitably configured acidless separation process, it becomes a source of recoverable materials. ALS2 provides a platform for evaluating that opportunity in a compact, controlled and scalable format.
Contact Ikoi S.p.A. to discuss a representative telecom scrap sample, assess the most suitable preparation route and define a pilot programme for precious-metal recovery with ALS2. A feed-specific evaluation can establish the technical, environmental and commercial conditions for moving from retired network equipment to valuable secondary resources.