Recovering Precious Metals from Military Electronic Scrap with ALS2
Military electronic equipment contains valuable materials in a difficult waste stream. Communications units, radar assemblies, control boards, navigation systems and ruggedised computing hardware can include gold, silver, palladium and copper in contacts, connectors, ceramic packages and printed circuit boards. Once equipment reaches the end of its service life, however, recovery must account for security, hazardous components, traceability and strict chain-of-custody requirements.
ALS2 offers an acidless approach to precious metal separation that can support more controlled electronic waste processing. Developed by Ikoi S.p.A. through the ALS2Project, the technology is presented as a cleaner alternative to conventional acid-based refining. For Australian operators handling defence-related e-waste, its value lies in combining metal recovery with a more contained and potentially adaptable treatment process.
Why military scrap needs a specialised pathway
Military-grade electronic scrap is not the same as ordinary business IT equipment. Hardware may have been modified for harsh environments, sealed against dust and moisture, or designed with unusual alloys, coatings and high-reliability components. It can also carry classified data, embedded keys, technical drawings or configuration information, even after the equipment has been declared obsolete.
That means a recovery plant cannot simply accept a pallet of circuit boards and send it through a standard shredder. Equipment may first require inspection, declassification, data destruction, component removal and confirmation that no controlled item remains in the load. In Australia, this work can involve Defence contractors, accredited recyclers, asset owners and state-based waste requirements. A facility in Melbourne, Brisbane or Perth may also need to coordinate transport and documentation across several jurisdictions.
Physical security is equally important. Segregated storage, restricted access, recorded movements and clear handover records help protect both sensitive information and high-value material. The precious metal recovery stage should be integrated into that procedure rather than treated as a separate activity after the scrap has already been mixed with general e-waste.
Where the recoverable value is found
Gold is commonly associated with electronic scrap because it resists corrosion and maintains reliable conductivity. In defence electronics, it may appear on edge connectors, contact fingers, pins, bonding wires, plated terminals and selected high-performance components. Silver can occur in contacts, switches, solders and specialist electronic assemblies, while palladium may be present in some multilayer ceramic capacitors and other components.
Copper remains a major contributor to the overall value of printed circuit boards, cables and busbars. The economic result depends on the grade and consistency of the feedstock, not simply on the presence of a small amount of gold. A mixed stream containing aluminium housings, steel, plastics, batteries and low-grade boards can dilute the payable metals and increase preparation costs.
Pre-sorting is therefore central to the business case. High-grade boards and connectors should be separated from ferrous frames, cable fractions, batteries and non-recoverable plastics. An Australian processor might receive a small, irregular batch from a naval contractor one month and a larger decommissioning lot from a communications fleet later in the year. ALS2 is most useful when the incoming material is characterised and prepared to match the process design.
How an acidless process can fit the workflow
The ALS2 concept is based on recovering precious metals from electronic scrap without relying on conventional acid-based separation. In practical terms, a plant would still need a disciplined sequence: secure receiving, dismantling, size reduction where appropriate, separation of unwanted fractions, treatment, metal concentration and final refining or dispatch to a downstream specialist.
An acidless route can reduce reliance on aggressive liquid reagents and may simplify some aspects of process containment, chemical storage and effluent management. That does not mean the operation is chemical-free or risk-free. Dust, residues, heat, noise, electrical hazards and contaminated components still require engineering controls, personal protective equipment and appropriate waste handling.
For military scrap, the process can be positioned after sensitive items have been cleared and before material is sent to a final precious-metals refiner. Depending on the equipment configuration and feedstock, the operator may recover a concentrated precious-metal fraction rather than produce a final bullion product on site. Pilot testing is essential because coatings, solder systems, ceramic content and board construction vary considerably between generations of defence hardware.
| Consideration | Acid-based refining route | ALS2 acidless approach |
|---|---|---|
| Main process concern | Handling corrosive reagents and liquid residues | Managing mechanical, thermal and process-specific operating risks |
| Feed preparation | Often requires careful removal of incompatible materials | Requires disciplined sorting and feed characterisation |
| Environmental focus | Reagent storage, fumes, effluent and neutralisation | Residues, dust, energy use and downstream waste control |
| Suitability for sensitive scrap | Must be integrated with secure pre-processing | Can be incorporated into a controlled electronic-scrap workflow |
| Commercial decision | Driven by metal yield and chemical operating costs | Driven by yield, throughput, equipment configuration and operating costs |
| Validation need | Assay and compatibility testing remain essential | Assay, pilot trials and process validation remain essential |
Designing a secure Australian recovery operation
A commercial installation needs more than a separation unit. The front end should define how military assets arrive, who is authorised to handle them, how serial numbers are recorded and when data-bearing parts are destroyed or isolated. A clear material passport can connect each batch to its source, weight, pre-treatment record, assay results and final destination.
Australian conditions also influence facility design. A site near Adelaide may work with defence manufacturing and maintenance networks, while a Perth operator may face long freight distances from remote industrial locations. In regional New South Wales or Queensland, reliable access to specialist laboratories and downstream refiners may be less immediate than in Sydney or Melbourne. These realities affect batch size, storage capacity and transport planning.
The process area should be separated from offices and general recycling activities. Enclosed handling, local exhaust ventilation, fire protection, spill response and robust flooring support safer operation. Loads containing lithium batteries, capacitors, mercury switches or other hazardous items need their own identification and treatment route. A tidy, well-marked site is not just good housekeeping; it helps prevent a high-value defence stream from being mixed with incompatible materials.
Measuring performance beyond metal yield
Metal recovery rate is a crucial metric, but it is only one part of the assessment. Operators should track the quantity and quality of incoming boards, the mass of separated fractions, precious metal concentration, energy consumption, consumables, residue generation and the time required for each batch. Assay results from an independent laboratory can help establish whether recovered material meets the requirements of a buyer or refiner.
The environmental profile also deserves close attention. Avoiding conventional acid leaching may reduce certain risks associated with corrosive liquids and wastewater, while improved recovery can reduce the need for primary mining. The full result still depends on electricity use, transport, dismantling methods, residue treatment and what happens to plastics and non-metal fractions.
Australian customers are increasingly attentive to evidence rather than broad sustainability claims. Defence suppliers, councils and major contractors may request chain-of-custody records, recovery certificates, environmental data and documented destruction of information-bearing components. A facility that can show where each batch went, what was recovered and how residual waste was managed will be better placed to win repeat work.
Building a practical business case
The strongest candidates for ALS2 are likely to have a dependable supply of suitable electronic scrap and a clear route to market for recovered metals. A one-off collection of mixed equipment may not justify a dedicated plant. A longer-term arrangement with defence maintenance providers, secure logistics companies, government agencies or specialist e-waste contractors can provide the volume needed to support investment.
Feedstock testing should precede major procurement. Samples can establish precious metal content, contamination levels, board density, component mix and likely recovery behaviour. The results can then inform equipment sizing, labour requirements, floor space, operating costs and expected revenue. A staged model may be sensible: begin with secure sorting and pre-processing, conduct pilot trials, then expand into a compact recovery plant once the data supports it.
Local market conditions matter. Australia exports and imports significant quantities of electronic equipment and relies on specialised recycling networks, so freight costs and international refining relationships can influence profitability. A plant close to a defence cluster may save transport time, while a regional site may offer space and lower overheads but face higher logistics costs. The right location is the one that balances secure access to feedstock, skilled labour, utilities, compliance capability and a reliable downstream buyer.
Moving from project concept to controlled deployment
A responsible deployment begins with a material and security audit. Identify the equipment categories, likely precious metals, data risks, hazardous components, expected monthly tonnage and existing contractual obligations. The audit should also establish which activities must be performed by cleared personnel and which can be assigned to an ordinary e-waste operation after declassification.
The next stage is technical validation. Representative samples should be dismantled and processed under controlled conditions, with independent assays used to compare input and output. Operators can then assess whether ALS2 delivers the required recovery performance for their particular mixture of connectors, boards, ceramics and plated parts. The pilot should include residue analysis and workplace safety reviews, not just a headline recovery percentage.
For Australian businesses, partnerships may make implementation easier. A secure asset-disposal company can manage collection and data destruction, an e-waste processor can handle dismantling and sorting, and a precious-metals specialist can complete final refining. This distributed model can help a new facility focus on its strongest capability while retaining accountability across the chain.
ALS2 gives project developers a pathway to examine precious metal recovery with reduced dependence on traditional acid-based refining. For military-grade electronic scrap, the technology should be considered as part of a wider system covering security, preparation, compliance, environmental controls and verified metal recovery. Contact the ALS2Project team to discuss feedstock characterisation, pilot testing and the design requirements for a secure Australian recovery operation.