Recovering Precious Metals from Telecom Circuit Boards with ALS2

Telecommunication circuit boards contain small but valuable concentrations of gold, silver, palladium and copper. These metals are found in plated contacts, connectors, integrated circuits, relays and other components that support reliable signal transmission. As mobile networks, broadband systems and data infrastructure are upgraded, a steady stream of retired equipment is becoming available for recycling.

ALS2, developed by Ikoi S.p.A., offers an acidless separation route for recovering precious metals from electronic waste and WEEE-related streams. For telecommunications recyclers, the technology provides a way to examine board-level recovery with less reliance on conventional acid refining, while supporting safer handling, resource efficiency and compact plant design.

Why Telecom Boards Are Valuable Feedstock

Telecommunication boards are generally more consistent than mixed household electronics, particularly when they come from network cabinets, switching equipment, base stations or professional communications hardware. Gold may occur on edge connectors and contact surfaces because it resists corrosion. Silver and palladium can be present in selected components, while copper forms much of the conductive track and structural value.

The concentration of precious metals varies widely according to board age, manufacturer, equipment function and degree of component removal. Older server, exchange and switching boards may have different metal profiles from modern router, fibre, wireless and 5G equipment. A recovery project therefore needs representative sampling rather than a single assay based on a visually attractive batch.

Telecommunications equipment can also contain aluminium heat sinks, steel frames, plastics, batteries and cables. Separating these materials before precious-metal treatment improves feed consistency and reduces unnecessary handling. The objective is not simply to process the greatest possible mass; it is to prepare a stream in which the value-bearing fraction can be treated efficiently.

Preparing Boards for ALS2 Processing

A practical ALS2 workflow begins with inspection, depollution and mechanical preparation. Batteries, toner cartridges, lamps, large capacitors and other regulated or unsuitable items should be removed. Cables, steel brackets and bulky housings can be directed to established metal recycling routes, leaving boards and selected components for characterisation.

Size reduction may be used to liberate plated contacts and expose components, but excessive shredding can create dust, mixed fines and difficult-to-sort fractions. Controlled dismantling or staged granulation can preserve a cleaner high-grade fraction. Magnetic separation, screening, air classification or density-based methods may also be considered, depending on the equipment and the feed composition.

Australian operators should account for the way equipment arrives at the site. Retired network assets may be collected from metropolitan facilities in Sydney, Melbourne or Brisbane, while communications hardware from regional and remote areas can involve long freight routes. A receiving protocol that records source, equipment type, weight and pre-processing losses helps maintain reliable material accounting.

How Acidless Separation Supports Recovery

The ALS2 concept is intended to separate precious metals without the conventional acid-based route used in many hydrometallurgical operations. This can reduce dependence on aggressive mineral acids and may simplify some aspects of reagent management, ventilation and operator protection. The process remains an engineered chemical treatment, so it still requires controlled dosing, compatible equipment, monitoring and responsible management of process residues.

For circuit boards, the key advantage is the ability to focus on a prepared, metal-bearing fraction rather than treating an uncontrolled mixture of plastics and hardware. Copper and other base metals can influence the chemistry, so feed preparation and process control are central to maintaining selective precious-metal recovery. The appropriate operating window must be established for each board family through testing.

ALS2 is especially relevant where a recycler wants a compact precious-metals recovery plant rather than a large-scale primary smelter. A smaller modular arrangement could support regional pre-processing, toll treatment or an integrated electronic-waste facility, subject to site requirements, throughput, permits and downstream arrangements. The technology does not remove the need for sound engineering; it changes the recovery pathway that the engineering must control.

Testing the Feed Before Commercial Scale

Laboratory work should establish the grade, variability and behaviour of the telecommunications boards before a commercial system is sized. Useful tests can include compositional assays, particle-size analysis, moisture measurement, leach or separation response, residue characterisation and checks for interfering metals. Samples should represent different equipment generations and suppliers, not just the richest visible boards.

The lab testing guidance explains why scale-up decisions need evidence from controlled experiments. Results should be translated into practical design information, including expected recovery, reagent consumption, residence time, solids loading, residue volume and the quality of any recovered product.

A pilot campaign can then test continuous or semi-continuous operation, material transfer, filtration, washing and product handling. It can also reveal operational issues that are difficult to identify in a beaker, such as settling behaviour, foaming, blockages or changes in performance as the feed moves from one board type to another.

Comparing Recovery Routes

The choice of process depends on feed grade, available infrastructure, regulation, scale and the desired product. Conventional acid refining may be familiar to some operators, while pyrometallurgy can accept broad mixed feeds but generally requires major capital investment. ALS2 belongs to a different category: an acidless separation approach designed to support precious-metal recovery from prepared electronic-waste streams.

Consideration	Conventional Acid Route	ALS2 Acidless Route
Primary purpose	Dissolve and separate metals using mineral acids	Separate and recover metals through an acidless process
Feed preparation	Often needed to control plastics, base metals and contaminants	Important for creating a consistent, value-bearing feed
Chemical management	Requires acid storage, dosing, neutralisation and corrosion control	Requires controlled process chemistry and residue management without conventional mineral acids
Plant concept	Can range from small workshops to industrial systems	Suited to compact recovery plant concepts, subject to validation
Key scale-up evidence	Recovery, acid consumption, emissions and effluent data	Recovery, selectivity, throughput, reagent use and residue data
Main business question	Can the plant manage cost, risk and effluent?	Can the validated process recover sufficient value safely at the target scale?

This comparison does not mean that one route is suitable for every feed. A decision should include total material yield, occupational health, environmental controls, product quality, logistics and the cost of sending unsuitable fractions to specialist processors. ALS2 can be assessed as part of a broader recycling chain, with non-target materials continuing to established downstream outlets.

Building an Australian Operating Model

Australia’s market has a strong need for practical e-waste logistics because valuable material is spread across a large geography. A plant near a major industrial or port centre may receive dense metropolitan volumes, while a regional operator may benefit from pre-processing equipment that reduces the mass shipped interstate or overseas. Long-distance freight from Western Australia, Queensland or the Northern Territory makes accurate sorting particularly important.

Collection channels may include telecommunications contractors, data-centre decommissioning firms, network operators, electronics refurbishers and council transfer stations. Community e-waste drop-off events and state-based recycling services can supply smaller volumes, although mixed household material usually needs additional sorting. In Victoria, where e-waste has been banned from landfill since 2019, compliant collection and transfer practices are especially relevant to businesses handling retired electronics.

The local market also has distinct commercial considerations. Gold and silver products may need to be sold to a recognised refiner, while copper, aluminium, steel and plastics can follow separate commodity routes. A feasibility study should include assay-based settlement, transport insurance, secure storage, chain-of-custody controls and the cost of moving residues to approved treatment facilities.

Safety, Compliance And Environmental Performance

Acidless does not mean risk-free. Operators still need chemical risk assessments, site procedures, personal protective equipment, emergency response plans, ventilation where required and training for sampling and process operation. Dust from shredded boards, lead-containing components, brominated flame retardants and other legacy substances may create hazards before the ALS2 stage begins.

Environmental controls should address water use, process liquids, solid residues, air emissions and accidental releases. Australian requirements vary by state and territory, and approvals may involve local councils, environmental regulators, workplace safety authorities and waste transport rules. A project should establish these obligations early rather than treating compliance as a final construction task.

The technology’s potential environmental benefit comes from avoiding conventional acid-based refining and improving recovery from material that might otherwise be exported, stockpiled or discarded. That benefit needs to be demonstrated with measured data. Tracking energy, water, chemical inputs, recovery rates and residue destinations allows an operator to report performance credibly and identify where the process can be improved.

Connecting Recovery With Circular Supply Chains

Recovered metals from telecommunications equipment can support a more circular electronics economy. Gold, silver, palladium and copper do not lose their fundamental material properties simply because they have been incorporated into obsolete network hardware. Returning them to manufacturing and refining markets reduces pressure on primary extraction and makes better use of resources already in circulation.

For Australian businesses, this opportunity is linked to network modernisation, data-centre growth and the continuing replacement of copper and legacy infrastructure with fibre and newer wireless systems. A dependable recovery route can help telecommunications companies document diversion from landfill, improve asset disposition and gain clearer visibility over the materials contained in retired equipment.

ALS2 provides a platform for evaluating that opportunity at an appropriate scale. The strongest projects will combine disciplined feed preparation, representative laboratory testing, robust plant design and transparent commercial agreements. When those elements are aligned, precious-metal recovery from circuit boards can become a controlled industrial service rather than an informal end-of-life activity.

Businesses assessing obsolete telecommunications stock can begin by segregating board types, recording available volumes and arranging representative assays. From there, an ALS2 feasibility study can define the most suitable preparation method, process conditions, plant configuration and downstream partners for the Australian operating environment.