Industries — Mining
Gold
Cyanidation remains the dominant gold extraction process. Olfa supplies across every stage of a modern CIL or CIP plant — from grinding media and lime through activated carbon and elution chemicals to tailings detoxification.
The Cyanidation Circuit
Ore is crushed and ground to liberate gold particles, then leached with a weakly alkaline cyanide solution. Dissolved gold is adsorbed onto activated carbon in CIL or CIP tanks, eluted, and refined to doré. Cyanide in the tailings stream is destroyed before discharge.
Each stage has a predictable consumable bill. The diagram below shows where Olfa supplies into that bill — and the list underneath maps it out in metallurgist's terms.
What Olfa Supplies, Stage by Stage
Crush & grind
Forged steel grinding balls (40–125 mm), high-chrome cast media, mill liners and wear parts.
Cyanide leach
Cyanide through licensed channels, quicklime for pH control, lead nitrate as leach accelerator, magnesium oxide, oxygen supply support.
CIL / CIP & elution
Coconut-shell activated carbon (6×12 mesh, CTC 60+), caustic soda, hydrochloric acid for carbon regeneration.
Tailings & water
Sodium metabisulphite for cyanide destruction, copper sulphate as catalyst, anionic polyacrylamide flocculants.
Refining
Borax and silica fluxes, crucibles, assay consumables.
A Partnership at Any Scale
Whether you're commissioning a new operation or strengthening an existing supply chain, Olfa works as an integral partner from first enquiry through long-term supply. We add value through superior sourcing, reliable logistics and full compliance documentation — scaled to your stage, your volumes, and your operational priorities.