Refining Services
State-of-the-art refining facilities processing scrap gold, silver, and platinum group metals to 99.99% purity.
Global Unrefined Gold Procurement & Refining
Avantaa specializes in sourcing unrefined gold from compliant suppliers worldwide and processing it through our state-of-the-art refining facilities. We maintain the highest international compliance standards, ensuring every step from procurement to final refined product meets strict regulatory requirements.
With the ability to forward sell or make advance payments in all major currencies, we offer a complete service. Unrefined gold and metallic scrap are melted in complex induction furnaces to ensure homogeneous consistency before sampling and assaying. Individual customer melts of a kilo or two or industrial melts of up to 300 kilos can be accommodated.
Our focus on high-compliance sourcing and international standards ensures traceability, transparency, and regulatory adherence throughout the entire supply chain.
Refining Gold
Using the Miller process for Gold refining, chlorine is introduced into the melt converting base metals to metal chlorides. The scrap Gold is upgraded to over 95% purity and subsequently chemically treated using Aqua Regia to produce fine Gold sand of .9999 purity.
The sand is then melted in special crucibles and poured into de-mineralised water (which reduces the risk of contamination) to produce grain. The grain is dried in ovens and re-assayed.
Refining Silver
Silver is refined using the Balbach Electrorefining process to a very high standard and the technical sophistication of our process plant ensures full recovery of all other metals found in the scrap bullion. Treatment of spent electrolyte for re-use and the recycling of wash water completes the circle of a fully environmentally friendly process.
Evaluation and Analysis
Preparation and evaluation of low-grade materials such as sweeps or used crucibles are carried out under strictly supervised conditions to fully account for precious metals contained. This guarantees the maximum return of value for clients who are always invited to obtain an independent assessment of precious metals contained in their low grade material thus removing the possibility of doubt that is often expressed when evaluations are presented for this type of material.
In house analytical facilities include ICP-OES and XRF which, together with cupellation/fire assay and titration, provide full metallurgical analysis of clients' precious metal samples as well as quality control for the Company's many products.
High-Compliance Global Sourcing
Our procurement process focuses on sourcing unrefined gold from compliant suppliers worldwide while maintaining the highest international standards:
- Comprehensive supplier due diligence and KYC verification
- Origin documentation and chain of custody tracking
- Conflict-free sourcing verification
- International regulatory compliance (LBMA, OECD, etc.)
- Full traceability from source to final refined product