Two plants. One site.
Running around the clock.
Boshoek runs two independent spiral concentrator circuits — MGN 2 and MGN 1 — sharing one site, one materials-handling yard and one maintenance team. A maintenance stop on one circuit does not stop the plant, and it allows two feed sources or two clients' material to be processed concurrently without co-mingling.
Plant MGN 2
- Primary jaw crusher to −40 mm
- Wet screen 1.5 × 4 m (6 m²) cutting at 1.2 mm
- VSI crusher rated 110 t/h on screen oversize, closed circuit
- Multi-stage spiral train with dewatering
Plant MGN 1
- Independent crushing, screening and spiral circuit
- Run as a separate stream — stockpiles kept apart from MGN 2
- Suited to smaller, segregated or trial parcels
- Allows two feed sources to be processed concurrently
Why the circuit is built this way
Closed-circuit crushing, not open. Roughly two thirds of fresh feed tonnage recirculates, so the plant crushes to a size the spirals can actually separate.
The screen sets the pace, not the crusher. At a 1.2 mm cut the wet screen is the binding unit; the VSI never runs near its rating.
Spirals sized to the mineral. Gravity separation on chromite works between roughly 45 and 1,000 µm, peaking near 180 µm.
Nothing leaves as waste if it can be sold. A tight primary cut reports to a second saleable product or a saleable tailings stream.
Substantial plant.
Kept running in-house.
Boshoek is a built-out industrial site, not a contracted circuit. The processing plant and fixed equipment are the company's own — capacity is not renegotiated when someone else's hire agreement ends.
Processing
- Primary jaw crushing
- VSI crushing in closed circuit
- Wet screening plant
- Multi-stage spiral concentrators, both circuits
- Dewatering screens and cyclones
- Process pumping and water reticulation
Materials handling
- Conveyor gantry and transfer points
- Material handling yard
- Segregated feed and product stockpiles
- Weighbridge-controlled load-out
- Tip and reclaim areas for both plants
Services & support
- Eskom grid power
- Water supply and process water circuit
- Bulk diesel storage and dispensing on site
- Workshop, stores and spares holding
- All-weather road access, 5 ha secured site
Maintenance is resident, not called out
A chrome spiral plant is a wear business. Screens blind, liners go, belts tear and pumps pack up — measured in hours of lost feed. Having the trade on site rather than three hours away is the difference between a shift interrupted and a shift lost.
Backed by a group that runs fleet at scale
MGN's majority shareholder sits inside a South African industrial group operating one of the country's larger privately held fleet operators, plus bulk logistics, asphalt manufacture and civil operations.