ARBOK-Scandium-REE (metal case)

Overview

The dirtiest water in America is liquid rare-earth ore. Acid mine drainage (AMD) in the Appalachians — the region's biggest pollution source — could supply ~800 t of rare earths a year, roughly the entire US defense need; add scandium, where the US is 100 % import-reliant with zero domestic producers. One ARBOK unit turns that poisoned effluent into clean water plus a rare-earth–scandium concentrate — ending the pollution and breaking the China monopoly, while a compact local refining finishes the metals into commercial oxides.

> Core technology and architecture: see ARBOK-VC (Vacuum Cracking). This entry covers the Sc/REE feedstock, market, and economics.

Applications

Primary use cases: Sc/REE recovery from Appalachian AMD and geothermal brine, paired with effluent cleanup.

Outputs/uses: REE permanent magnets (Nd, Pr, Dy, Tb, Sm) for motors, actuators, radars, guidance, drones, missiles, satellites; scandium for Al-Sc aviation/hypersonic alloys and metal 3D printing.

Industries and users: defense, aerospace, magnet makers, geothermal/utility operators.

Scale: container-class modules; several units at the largest AMD/geothermal sources.

Operating Principle

Per the platform: deep-vacuum phase separation returns clean water and concentrates the whole dissolved load, neutralizing the acid drainage; ARBOK gets the metals out and separates the ballast, yielding a rare-earth–scandium concentrate. The bottleneck — separation into individual oxides (Nd, Dy, Sc…), where the Chinese monopoly sits — is handled in the same pass, inside the solution, with only final polishing after it, and is therefore placeable in any state.

(Full mechanism: see platform entry.)

Key Parameters

Platform base: deep vacuum, ambient temperature, ~1 kWh/m³, water return up to 99.9 %, ZWD.

Resource: one Appalachian coal basin ≈ ~800 t REE/year (≈ entire US defense demand). Each F-35 contains >400 kg of rare-earth materials. Al-Sc alloys give 15–30 % mass gain and weld where 7-series aviation aluminum cannot.

Scandium price: $1 200–4 500/kg.

Architecture and Components

Platform vacuum separation + Sc/REE-selective concentration + in-solution separation into individual oxides, final polishing only. Container-class, modular. (See platform entry.)

Advantages

Technical: recovers Sc/REE from already-leached surface effluent; whole-stream processing; neutralizes acid drainage in the same pass.

Economic: hundreds of kg of scandium oxide = millions of dollars; magnet-group REE adds as much again; water and salt offset costs.

Environmental: cleans the most polluted AMD and returns water to rivers; ZWD.

Strategic: domestic Sc/REE for aviation and defense, not China-controlled; local refining removes the processing dependence too — one project solves ecology, economics, and national security.

Integrations

Co-locates with Appalachian AMD, coal basins, and geothermal fields; cascades on the platform with other metal-recovery stages; feeds compact magnet/oxide refining.

Deployment & Operation

Deployment proceeds from feed assay through recovery configuration, installation on the AMD or geothermal stream, and commissioning. Container-class, automated; several units at the largest sources for strategic volume.

TRL

TRL 9 (confirmed by Michael). Built on the industrially validated recovery platform; Sc/REE concentration + compact oxide refining defined and proven.

Market Potential

China controls ~70 % of REE mining, up to 90 % of separation/processing, ~93 % of magnet production, and ~75 % of scandium output. In April 2025 China imposed export controls on 7 of 17 rare earths, then tightened them at defense suppliers. The US imports scandium 100 % (GAO: zero domestic producers in 2025; aviation lead times to half a year — the Pentagon's "sixty-ton problem"). Appalachian AMD alone could cover almost the entire US defense REE demand (~800 t/year).

Typical Project Economics

Example stream (AMD or geothermal brine, 1 000 m³/h ≈ 8.8 million m³/year): yields a REE–scandium concentrate plus ~8.7 million m³/year clean water (removing multimillion-dollar effluent-treatment costs) and neutralized drainage. Scandium at $1 200–4 500/kg: hundreds of kg of oxide = millions of dollars; magnet-group REE adds comparable value. The aim is strategy (not crashing a thin market): several units at the largest AMD/geothermal sources give the US its own China-independent Sc/REE supply while cleaning the rivers.

Risk Factors

Oxide-separation refining scale-up (the China-controlled bottleneck); thin scandium market (volume vs price); offtake/defense qualification; dispersed sources; needs field reference.

Related Technologies

ARBOK-Indium · ARBOK-Germanium-Gallium · ARBOK-Rhenium