Operations
From run-of-mine ore to export-ready concentrate
A modular crush-and-wash circuit engineered around gravity separation, water recovery and consistent product grade.
Capabilities
What the plant does
ROM Handling & Feed Preparation
Front-end loader feed, ROM stockpile management, hopper and vibrating grizzly scalping to a controlled top size.
Crushing & Comminution
Primary and secondary crushing circuits sized for consistent liberation ahead of the wash and gravity plant.
Screening & Classification
Lumpy (+10 mm to −150 mm) and wash fines (−10 mm) split, with 20 mm and 2 mm screening decks.
Washing & Scrubbing
Trommel / rotary scrubber circuits removing clays and fines to expose clean mineral surfaces.
Gravity Beneficiation
Rougher and cleaner spiral banks, hydrocyclone desliming, wet drum magnetic separation and shaking tables to upgrade to a 40–44% Cr₂O₃ product.
Dewatering & Water Recovery
Screw dewaterers, dewatering and linear screens, vacuum filtration and closed-loop water recycling through settling and clean-water return dams.
Tailings & Environmental
Engineered tailings and slimes facilities, pollution control dams, and environmental authorisation and water-use compliance workstreams.
Power & Utilities
Grid or heavy-duty diesel generation with MCC-controlled distribution, and hybrid solar options for long-term cost stability.
Stage 1–2 — ROM feed, primary crushing and screening
Process flow
Seven stages, one gravity-flow circuit
Designed for early tailings rejection so downstream equipment stays small, efficient and cheap to run.
Feed
FEL → hopper → vibrating grizzly (~70 mm scalp).
Wash & Scrub
Trommel / rotary scrubber with 20 mm and 2 mm screens.
Rougher Gravity
Primary spiral chutes on the −2 mm fraction for early tailings rejection.
Cleaner Gravity
Secondary cleaner spirals treating middlings.
Fine Upgrading
Wet drum magnetic separation and shaking tables.
Dewatering
Screw dewaterer and dewatering screens.
Stockpiling
Concentrate yard, ROM pad and water-recovery tailings pond.
Final product — 40–44% Cr₂O₃ concentrate
Water stewardship
Closed-loop reticulation through settling and clean-water return dams keeps make-up water demand low and protects surrounding watercourses.
Power resilience
MCC-controlled distribution with grid or diesel generation, and hybrid solar options evaluated for long-run cost stability.
Quality assurance
Independent third-party assays confirm concentrate grade before dispatch, giving offtake partners verifiable 40–44% Cr₂O₃ product.
From the site
Boots on the ground
Real photographs from the Black Rock operation.
