Read the deposit
Build a representative material picture: mineralogy, PSD, geochemistry, moisture, reactivity and variability across the storage history.
Evidence-led tailings reuse
From tailings
characterisation to credible reuse.
Waste2Resource is a technical reference library for tailings engineers, operators, researchers and regulators. Compare how material behaviour, process conditions, exposure pathways and project constraints shape viable reuse.
11source-linked
technical cases
technical cases
9jurisdictions
represented
represented
5reuse and management
pathways
pathways
Screening principle — characterise first; value follows evidence.Tailings · mine water · residue · closure materials
The Waste2Resource decision path
Turn a residue question into a defensible pathway.
Find the gates
Separate pathways that are chemically plausible from those limited by release behaviour, processing intensity, logistics or regulation.
Test the material
Design test work around the actual decision: separation, activation, blending, mechanical performance, durability and environmental stability.
Prove the fit
Connect the technical result to product specification, market, approvals, quality controls, water balance and closure outcomes.
Decision discipline: a positive lab result is a reason to progress—not evidence that the pathway will transfer unchanged to another tailings stream.
Technical assessment frame
Use cases are only useful when their constraints travel with them.
Waste2Resource lens
Each record should be read as an engineering starting point, not a transferable specification. We surface the variables that determine whether a pathway is practical at another site.
What is the residue?
Mineralogy, particle-size distribution, moisture, sulphur and carbonate balance, residual reagents, metal inventory and variability.
- Geochemical characterisation
- Physical & mineralogical data
- Representative sampling basis
Does it perform?
Functional properties are considered beside release behaviour, durability, processing intensity and product-specification requirements.
- Leachability & exposure route
- Strength / permeability / reactivity
- Quality assurance evidence
Can it be deployed?
Reuse sits inside a broader system of permitting, logistics, market demand, closure objectives, water balance and social licence.
- Regulatory pathway
- Scale and material handling
- Lifecycle and closure fit
Research landscape
A growing technical evidence base—not one paper, one product or one answer.
Tailings repurposing is being explored across mineral characterisation, separation and reprocessing, ceramics, concrete, geopolymers, environmental performance and closure planning. Waste2Resource brings these threads together so readers can compare both results and limitations.
The research below spans early-stage pathway screening, laboratory material studies and evidence reviews. Each paper answers a different part of the engineering question: what is in the residue, what can it become, what can be demonstrated, and what still requires field validation.
Research evidence ledger
What has actually been tested?
These studies are not product approvals or universal recipes. They record the tests undertaken, the conclusion supported by the authors, and the next decision needed before transfer to another tailings stream or commercial setting.
Lab feasibility demonstratedConditional / site-specificFurther research required
Tailings / ceramics
Plombières facing bricks
Journal of Cleaner Production, 2022 ↗Tests reported
Material characterisation; lab-scale blend modification; product quality and environmental assessment against standards; cradle-to-gate life-cycle assessment.
What the paper supports
Untreated Plombières tailings performed satisfactorily in facing-brick blends and complied with the assessed environmental requirements across use, second-life and end-of-life scenarios. The study reports better environmental performance at a 40 wt% tailings blend.
ReadinessLab feasibility demonstrated
Next: plant-specific blend and production QA.
Gold tailings / concrete
Southern Ecuador concrete blocks
Sustainability, 2022 ↗Tests reported
Physical, chemical and mineralogical characterisation; EN 12457-2 leaching; 50% and 70% sand replacement; indirect tensile strength, compressive strength and absorption.
What the paper supports
The authors conclude the tested tailings were feasible as a sand substitute in concrete blocks. The reported leaching results met the study’s non-hazardous mining-waste limits and the blocks did not produce toxic leachates under the test conditions.
ReadinessConditional / site-specific
Next: local product standard, durability and pilot manufacturing checks.
Artisanal gold tailings / masonry
Pamaka cement-tailings bricks
Cleaner Waste Systems, 2025 ↗Tests reported
Gold and mercury assessment; mix-ratio trials; compressive strength and water absorption testing on cement-tailings bricks.
What the paper supports
The tested bricks met the stated international criteria for non-loadbearing masonry, with reported compressive strength of 5.02–13.3 MPa. The analysed mercury concentrations were reported within safe environmental limits for the study samples.
ReadinessConditional / site-specific
Next: durability, quality-control and production-scale validation.
Iron ore tailings / geopolymer
Western Australia geopolymer bricks
International Journal of Mining, Reclamation & Environment, 2016 ↗Tests reported
X-ray diffraction; initial setting, curing temperature and duration; activator-content optimisation; unconfined compressive strength, water absorption and durability properties; cost analysis.
What the paper supports
Under the investigated curing and activator conditions, the paper reports geopolymer bricks with strength up to 50.53 MPa that met the cited ASTM and Australian brick requirements.
ReadinessLab feasibility demonstrated
Next: reagent handling, long-term exposure and plant-scale economics.
Construction use / research gap
Western Australian tailings review
MRIWA research project, 2025 ↗Evidence reviewed
Peer-reviewed literature and case studies on iron ore and gold tailings in construction materials, including strength trends and Australian-standards considerations.
What it adds
The review identifies fine-aggregate substitution as promising, while flagging site-to-site tailings variability, long-term durability, leaching evidence and practical scale-up as the material gaps that determine whether a laboratory result can travel.
ReadinessFurther research required
Use as a checklist for pilot design and site-specific testing.
Technical case library
Comparable evidence, not a collection of claims.
Search cases by residue, region or pathway. Open each record for the engineering context and primary source.
Case studies / click a marker to explore
Plombieres, BelgiumTailings
Tailings for facing bricks
A published study tested sulphidic tailings in ceramic facing-brick blends, including leaching and lifecycle assessment.
Construction
Nador, MoroccoIron tailings
Iron tailings in fired bricks
Researchers evaluated iron ore tailings from an inactive mine as an additive in red-clay fired bricks.
Construction
Pamaka, SurinameGold tailings
Cement-tailings bricks
Artisanal gold-mining tailings were tested in non-loadbearing masonry bricks with reported material characterisation.
Construction
Southern EcuadorTailings
Tailings in concrete blocks
Gold-mining tailings were assessed as a partial substitute for sand in concrete-block production.
Construction
Karnataka, IndiaIron tailings
Donimalai tailings bricks
Iron-ore tailings from Donimalai Mines were tested in brick formulations for construction use.
Construction
Western AustraliaIron tailings
Geopolymer tailings bricks
Western Australian iron-ore tailings were studied as the main feedstock for geopolymer brick production.
Construction
Gauteng, South AfricaGold tailings
Ergo gold retreatment
An operating surface-retreatment business reclaims historic tailings and uses carbon-in-leach processing to recover gold.
Metals recovery
Missouri, USACobalt tailings
Missouri cobalt recovery
Legacy tailings are reprocessed for cobalt and other concentrates alongside closure and capping of the remaining material.
Metals recovery
Cornwall, United KingdomMine water
Wheal Jane water treatment
A long-running treatment scheme controls contaminated mine drainage; its early response used a former tailings dam for temporary water storage.
Water treatment
Colorado, USATailings & treatment sludge
Kittimac tailings remediation
Water-treatment sludge was blended with lead-contaminated tailings to immobilise metals; the capped site was designed for revegetation.
Land restoration
Western AustraliaNickel tailings
Mount Keith carbon sink
Studies document atmospheric CO2 becoming stable magnesium carbonate minerals within ultramafic nickel-mine tailings.
Carbon mineralisation
Why Waste2Resource
Tailings reuse needs engineering judgement, not slogans.
Waste2Resource gathers source-linked examples so the assumptions, limitations and technical questions behind a reuse pathway remain visible. It supports due diligence; it does not replace site investigation, test work or approvals.
01
Evidence is classified.
Records distinguish operating examples, institutional documentation and peer-reviewed studies from early-stage claims.
02
Residue context is retained.
Material type, recovery route, test scope and environmental considerations sit alongside the proposed end use.
03
Transferability is questioned.
A promising case does not automatically travel: geology, chemistry, regulation, logistics and closure setting all matter.
Maintain the technical library
A traceable evidence-review loop.
Structured contribution
Contributors provide source material, location, commodity, residue description, pathway and current project status for an initial screening record.
Engineer-led review
Each submission is checked for provenance, material context, analytical or performance evidence, release considerations and stated limitations before publication.
Publish with provenance
Approved records are maintained in the shared inventory so corrections and new evidence can be reviewed, dated and carried into the public library.