Overview
Rhenium has no ore of its own — it is recovered almost entirely as a byproduct of molybdenite processing from porphyry copper deposits. World primary production was ~81 t in 2025, ~80–85 % of it consumed in nickel-based single-crystal superalloys for jet and gas-turbine hot sections (one new engine set ~50 kg). The US produced ~9.8 t (~12 % of world output) yet remains a net importer. The structural loss: less than 12 % of the rhenium in ore is captured — during copper leaching it mobilizes as soluble perrhenate (ReO₄⁻) and escapes into leach solutions, raffinates, tailings waters, and acid mine drainage. ARBOK recovers it from the whole aqueous stream.
> Core technology and architecture: see ARBOK-VC (Vacuum Cracking). This entry covers the rhenium feedstock, market, and economics.
Applications
Primary use cases: rhenium recovery from porphyry copper–molybdenum mine and process waters (pregnant leach solutions, raffinates, tailings waters, AMD).
Outputs/uses: rhenium for Ni-based single-crystal superalloys (jet/gas-turbine hot sections); co-recovered base metals; clean water.
Industries and users: aerospace/defense, copper-molybdenum miners.
Scale: container-class; co-sited on copper-moly water circuits.
Operating Principle
Per the platform: the whole aqueous stream is concentrated by deep vacuum; bulk ballast salts (Fe, Al, Ca, sulfate) separate by density and are valorized; toxic arsenic and uranium are removed; water is recovered at up to 99.98 %. Perrhenate concentrates in the residual liquor as water is removed and is recovered by a compact selective ion-exchange / solvent-extraction finishing stage.
(Full mechanism: see platform entry.)
Key Parameters
Platform base: deep vacuum, ambient temperature, water recovery up to 99.98 % (70–95 % of process water), ZWD.
Resource: world primary rhenium ~81 t/year; US ~9.8 t (2025); existing circuits capture <12 % of in-ore rhenium. Superalloy share ~80–85 %; ~50 kg per new engine set.
Finishing: compact selective ion-exchange / solvent-extraction for perrhenate.
Architecture and Components
Platform vacuum separation + density valorization of ballast salts + As/U removal + perrhenate selective ion-exchange/solvent-extraction finishing. Container-class. (See platform entry.)
Advantages
Technical: captures the dissolved perrhenate that current circuits lose; co-removes As/U; neutralizes acid drainage.
Economic: economics governed by base-metal and water credits, so rhenium is a near-zero-marginal-cost addition; payback under 7 years (purchase) or zero operator capital (BOOM).
Environmental: ZWD; cleans copper-moly process and mine waters.
Strategic: materially increases US domestic rhenium for aerospace/defense; on the 2025 draft US critical-minerals list.
Integrations
Co-locates with porphyry copper–molybdenum leach/raffinate/tailings circuits and AMD; cascades on the platform with copper and other metal recovery.
Deployment & Operation
Deployment proceeds from water assay through recovery-and-finishing configuration, installation on the copper-moly water circuit, and commissioning. Container-class, automated; BOOM or purchase.
TRL
TRL 9 (confirmed by Michael). Built on the industrially validated recovery platform; perrhenate selective finishing defined; documented in an ARBOK preprint (June 2026).
Market Potential
Rhenium is among the rarest industrially essential metals, with a thin ~81 t/year market dominated by superalloys; the US is a net importer despite domestic copper-moly output. Recovering the >88 % currently lost to waters offers a credible path to domestic supply for jet engines and defense.
Typical Project Economics
Rhenium recovery rides on base-metal and water credits, making it a near-zero-marginal-cost addition. Payback under 7 years (purchase) or zero capital via BOOM. The stream also yields valorized base metals, clean water (70–95 % recovery), and neutralized acid drainage (removing treatment liabilities).
Risk Factors
Thin rhenium market (price/volume); perrhenate finishing scale-up; offtake/grade qualification; co-located with copper-moly operations; needs field reference.
Related Technologies
ARBOK-Copper-Waters · ARBOK-Scandium-REE · ARBOK-Indium