MGN
Concentrate stockpile and conveyor at the Boshoek plant
04 · Products

What we make,
and what it is for.

The plant produces chromite concentrate in three grade bands plus a saleable tailings stream. The 40–42% band is the volume product and the one most buyers contract against. Grade is ultimately set by the mineral and by the Cr:Fe ratio of the feed, not by how hard the plant is pushed.

Product
Cr₂O₃
Typical application
Availability
Metallurgical concentrate
40–42%
Ferrochrome smelting — the seaborne benchmark grade. Also refractory brick feed and chemical-grade ore.
Primary product
Second product
38–40%
Ferrochrome blending; glass and ceramic pigment feed.
Continuous
Low-silica concentrate
44–46%
Chemical (sodium dichromate) and refractory grain markets. Produced against confirmed feed and firm order.
On qualified feed
Saleable tailings
10–12%
Re-treatment feed and low-grade blending. Sold rather than impounded.
Continuous
Typical specification — 40–42% band
Cr₂O₃
40–42%, guaranteed at the band floor
SiO₂
approximately 4%
Moisture
below 3%
Cr:Fe ratio
1.3–1.5, reported per lot
Sizing
−1.2 mm concentrate fines
Reef affinity
UG2 / MG blend, classified per delivery
Assay basis
XRF, independent laboratory, per lot
Feedstock we buy

We price feed on a Cr:Fe-adjusted basis, not on Cr₂O₃ alone. Ratio is what sets the achievable product grade, so it is what we pay for.

Run-of-mine ore~30%
Middlings — the bulk of what we buy24–28%
Tailings & dump material10–12%

On grade guarantees. Clean liberated Bushveld chromite carries roughly 44–48% Cr₂O₃ in the grain, and the Cr:Fe ratio of the feed caps what any gravity plant can produce — no spiral or magnet lifts iron out of the lattice. We would rather tell a buyer up front which grade a given feed can and cannot hold than accept an order we would have to blend our way out of.