Powering Africa’s Critical Minerals Revolution
Over-The-Fence (OTF) Chemical Delivery for Mining Operations
HOW OTF WORKS
Your one-stop OTF partner for acids, caustic & ammonia
Built, financed,
and operated on your site.
Stop Building Chemical Plants —
Over-the-fence delivery so you focus on mining
We Finance & Design
Tailored to your demand profile
We Build & Operate
On a 1-2 ha fenced plot inside your site
You Receive by Pipeline
Pay per ton, Zero CapEx, Guaranteed uptime
WHAT WE DELIVER
Kemcore’s Over-the-Fence model enables mining and industrial clients to access on-site chemical production with no upfront capital or operational risk.
We fund, design, build, and operate tailored chemical facilities directly on your site — delivering critical reagents exactly where they’re needed. To guaranteed supply, our model unlocks added value through byproduct monetisation and flexible trade structures.
Sulfuric Acid
30-250 ktpa capacity
Caustic Soda/Lye
As required for processing
Ammonia
On-site synthesis or supply
Byproduct Value
We monetise/share revenue
Kemcore’s Fenced Plot
✓ You maintain site access control
✓ We lease a small plot from you (typically 1-2 hectares)
✓ We build, own, and maintain all equipment
✓ Over-the-fence reagent delivery via pipeline
✓ Optional: We receive power & water from you
Simple integration — we build on your site
WHY CHOOSE US
Why Mining Companies Choose Kemcore
From on-site chemical infrastructure to strategic feedstock hedging, Kemcore enables mining companies to secure a consistent and resilient supply with minimal capital expenditure and optimised operational uptime. Our chemical solutions are purpose-built for the demands of Africa’s mining sector.
No Capital Investment
We invest $30-90M in infrastructure.
You preserve capital for core mining operations.
On—Site Production
We build on your fenced plot.
92–95% availability with LDs;
bonus above 98%.
Expert Operations
Experienced third-party operators run plants. You don’t need chemical engineering expertise.
Risk Management
Pass-through formula pricing
+ hedging on feedstock. We take operational and technology risk.
Flexible Payment
Pay cash per ton, trade byproducts as payment (ammonium sulfate, gypsum, etc.) or hybrid models.
Proven Model
Following Aggreko (power) and Genesis Energy (chemicals)—both billion-dollar models.
Typical OTF
Economics & Performance
TRADITIONAL MODEL
KEMCORE OVER-THE-FENCE (OTF) MODEL
WHO WE SERVE
Contract Terms Built for Mining
10-15 year offtake agreements aligned with your
mine life. Take-or-pay structures with flexibility for ramp-up and maintenance shutdowns.
Pricing:
Capacity fee + throughput fee, indexed to CPI/FX
Performance:
92–95% availability with LDs; bonus above 98%
Performance:
92–95% availability with LDs; bonus above 98%
PAYMENT FLEXIBILITY THAT WORKS FOR YOU
Cash Payment
USD per ton delivered
Byproduct Trade
Ammonium sulfate / sodium sulfate / gypsum —
Kemcore markets and guarantees floor value
Hybrid Model
Combine cash + byproduct offtake
Example: Pay 60% in cash, give us 40% offtake rights on your ammonium sulfate production. We market it and optimize your cash flow.
Ready to Simplify Your Chemical Supply Strategy?
Share your estimated sulphuric acid or caustic soda demand, and we’ll respond within 48 hours with a site-specific fee structure and delivery plan.