Stable Supply of Phosphoric Acid for Mauritania Gold Mining Operations

Project Background

The client’s gold extraction process was previously plagued by two critical issues:

High reagent consumption: Their existing phosphoric acid supply was inconsistent in purity and quality, leading to rapid decomposition of thiosulfate leaching agents. This forced them to use 30-40% more chemicals than industry benchmarks, significantly increasing operational costs.

Unstable leaching efficiency: The poor quality of phosphoric acid resulted in erratic gold recovery rates, fluctuating between 75% and 82% on a daily basis. This made production planning and financial forecasting extremely difficult.

Supply chain unreliability: Their former supplier frequently missed delivery deadlines, causing costly production halts and emergency stockpiling expenses.

Solution

We designed a tailored solution to address the client’s core pain points:

Premium Product Quality

We supplied high-purity industrial phosphoric acid (85%) with strict control over heavy metal impurities (Fe, Cu, Pb < 10ppm). This ensured it acted as an effective stabilizer, forming stable complexes with copper ions in the leaching slurry.

Our phosphate-based additives were formulated to specifically inhibit the oxidation of thiosulfate, a key component in their environmentally friendly leaching process.

Stable & Predictable Supply

We established a dedicated monthly supply contract, guaranteeing on-time delivery to the port of Nouakchott, with a 99.8% on-time delivery rate.

Results

After switching to our phosphoric acid supply, the client achieved transformative results: