The Science of Purity
Gold refining in 2026 is no longer a rudimentary process. To achieve the 999.9 ‘Four Nines’ standard required by 2026 bullion banks, a refinery must combine ancient chemistry with 21st-century technology. In the heart of Kampala, MineralsBase partners with refineries that utilize the most advanced electrolytic processes in the world.
The Miller Process: The First Step to 99.5%
Most dore gold arrives at the refinery with a purity of 70% to 90%. The first stage of 2026 refining is the Miller Process. Chlorine gas is bubbled through the molten gold. Impurities like silver and copper react with the chlorine and rise to the surface as slag. This process is highly efficient and brings the gold to a purity of 99.5% within hours. However, for 2026 investment standards, this is just the beginning.
The Wohlwill Process: Achieving 999.9
To move from 99.5% to the final 999.9% purity, we utilize the Wohlwill Process. This is an electrolytic method where the 99.5% gold acts as an anode in a solution of chloroauric acid. Under a precise electric current, the gold dissolves and is redeposited on a pure gold cathode. Any remaining impurities fall to the bottom as ‘anode slime,’ which is then further processed to recover trace amounts of platinum and palladium.
Environmental Controls in 2026 Refining
The 2026 refinery is a closed-loop system. At MineralsBase, we ensure that our refining partners utilize advanced gas-scrubbing technology to eliminate harmful emissions. Mercury is never used in our modern facilities. This commitment to ‘Clean Refining’ is why our gold carries a premium in the 2026 market—it is technically perfect and environmentally responsible.
Assaying the Final Product
Once the refining is complete, every bar undergoes a double-assay. We use XRF for surface verification and Fire Assay for a complete core analysis. Only when both tests confirm 999.9 purity is the bar hallmarked and registered on the blockchain manifest. This is the technical rigor that defines MineralsBase in 2026.
Experience the peak of refining technology. Contact MineralsBase for certified 999.9 bullion.
