The REACT System
Real-Time Conditioning and Quality Assurance for Rare Earth Processing
Post-leach slurry variability is one of the most persistent and costly challenges in rare earth processing. In pilot and demonstration plants, inconsistent pH, solids carryover, and delayed characterization frequently lead to failed precipitation runs, wasted reagents, and slow, uncertain scale-up.
REACT (Real-Time Elemental Assay & Conditioning Technology) is a modular, skid-mounted system developed by Ozzy Services to address this problem directly. REACT operates between leaching and precipitation, where variability has the greatest downstream impact, providing operators with real-time visibility and control over slurry quality before recovery steps begin.
Rather than introducing new extraction chemistry, REACT focuses on process stabilization, conditioning, and decision support, helping operators reduce failed runs and accelerate learning during scale-up.
How REACT Works
REACT functions as a closed-loop conditioning and quality-assurance system for post-leach slurry. The system continuously cleans, measures, and, when necessary, reconditions slurry before it proceeds to precipitation or downstream separation.
Core workflow:
Buffer tank equalization: Incoming leach slurry enters a controlled buffer tank where pH and solids are stabilized through agitation and micro-dosing.
Hydrocyclone separation: Coarse and problematic solids are removed to protect downstream processing and measurement reliability.
Reconditioning loop: Off-spec slurry is routed through a short-residence conditioning loop for corrective adjustment.
In-line monitoring: Process signals such as pH, turbidity, conductivity, and elemental trends are monitored continuously, with thorium tracked as a compliance and routing indicator.
Intelligent routing: Based on live process data, slurry is either advanced to recovery or looped for further conditioning.
In practice, REACT acts as custody-transfer-style quality assurance for mineral processing—a live feedback loop that replaces delayed lab feedback with real-time operational insight.
Designed for Pilot and Demonstration Environments
REACT is being developed specifically for pilot-scale and demonstration-scale operations, where variability, iteration, and learning dominate day-to-day work.
Current and intended applications include:
Rare earth pilot and demonstration plants
Coal ash, tailings, and industrial by-product REE projects
Hybrid uranium and rare earth processing operations
Bench-scale system development and validation are underway in collaboration with Western Research Institute, with sensor development support from IXRF to ensure measurements are fit-for-purpose in slurry environments.
This work is focused on verifying controllability, measurement reliability, and system robustness before pilot-scale deployment.
One Platform, Multiple Use Cases
REACT for Rare Earth Pilot Plants
Designed to support post-leach conditioning for rare earth projects where process consistency and thorium awareness are critical to successful scale-up.
Stabilizes pH and solids prior to precipitation
Improves confidence in downstream recovery data
Provides time-resolved process data for engineering and reporting
REACT for Coal and Industrial Slurries
Adapted for low-grade or variable industrial waste streams such as coal ash, tailings, and red mud.
Enables controlled evaluation of REE recovery potential
Generates consistent data for pilot programs and grant reporting
Reduces chemical overuse and uncontrolled discharge
Both configurations share the same core architecture: hydrocyclone separation, reconditioning loops, in-line analytics, and intelligent routing—delivered on a transportable skid.
Why It Matters
REACT addresses a practical gap in U.S. rare earth processing infrastructure:
Reduces failed pilot runs caused by slurry variability
Improves data quality used for scale-up decisions
Lowers reagent waste through controlled conditioning
Provides real-time visibility instead of delayed lab feedback
Supports faster, more disciplined progression from lab to pilot
By turning variability into actionable information, REACT helps operators move toward predictable, repeatable processing—without requiring large, energy-intensive infrastructure changes.
Talk With Us
If you are operating or developing a rare earth pilot or demonstration project and want to reduce uncertainty before scale-up, we welcome the conversation.
