In modern gold recovery, the first question every mine should ask is simple:
“How much gold can we recover using gravity?”
Gravity Recoverable Gold (GRG) testwork provides that answer — quickly, reliably, and with significant operational value.
Why GRG Matters
Before a plant invests in a full-scale flowsheet or commits to chemical-intensive leaching, GRG testing provides a clear picture of what proportion of gold is recoverable through natural density differences.
This insight allows mines to:
1. Identify Free-Milling Gold Efficiently
GRG pinpoints the gold that can be captured early — often 30–60% depending on ore type — reducing the burden on cyanidation and lowering reagent costs.
2. Improve Circuit Design
A well-run gravity circuit reduces operating costs, speeds up recovery, and improves payback time. GRG testwork provides real data for designing or upgrading these circuits.
3. Reduce Chemical Consumption & Environmental Burden
The more gold recovered via gravity, the less cyanide is required downstream. This is both cost-effective and sustainability-friendly.
4. Guide Smarter Metallurgical Decisions
From plant expansion to troubleshooting, GRG testing helps mines avoid guesswork and base decisions on real performance data.
Our Approach at Peacocke & Simpson
We run GRG and Extended GRG testwork using industry-standard Knelson Gravity Concentrators, supported by decades of gravity separation expertise.
Our turnaround times are fast, and our reporting provides meaningful, actionable insights.
If your operation is planning, optimising, or re-evaluating gold recovery, GRG is the first step toward better performance.
