In gold processing, the phrase “know your ore” isn’t just a cliché — it’s the cornerstone of efficient and profitable operations. One of the most critical aspects of understanding your ore is gold deportment: the study of how gold occurs within an orebody, including its particle size, mineral associations, and distribution.
Understanding gold deportment is essential because not all gold behaves the same way during processing. Some gold occurs as coarse, free-milling particles that can be easily recovered with gravity methods. Other gold may be locked inside sulphides or other minerals, while ultra-fine particles can be easily lost to tailings if not handled correctly.
Why Gold Deportment Matters
1. Optimising Recovery Methods
Gold deportment determines which recovery techniques will be most effective. Coarse free gold may be efficiently captured using gravity concentrators, while fine or locked gold may require flotation or chemical processing. Without this insight, plants risk missing significant portions of gold, reducing overall recovery.
2. Designing Efficient Plant Flowsheets
Knowledge of gold deportment allows engineers to design processing circuits tailored to the ore’s characteristics. It ensures that each stage of the plant — from crushing and grinding to gravity, flotation, or leaching — is optimised for maximum efficiency, reducing unnecessary energy consumption and processing costs.
3. Reducing Losses and Improving Profitability
When the distribution of gold is unknown, losses to tailings and downstream processes can be significant. Proper testwork and deportment analysis identify potential losses early, allowing operations to implement corrective measures and capture more of the ore’s true value.
4. Supporting Strategic Decision-Making
Deportment studies also provide valuable insights for mine planning, resource estimation, and project feasibility. They help stakeholders understand the recovery potential and anticipate operational challenges before investing in large-scale plant design.
How Peacocke & Simpson Can Help
At Peacocke & Simpson, our metallurgical testwork services help mining operations unlock the full value of their ore. By analysing gold deportment, recovery potential, and optimal processing routes, we empower mines to:
Maximise gold recovery
Reduce processing costs
Minimise losses to tailings
Make informed, low-risk decisions
Gold deportment isn’t just a technical term; it’s a critical tool that turns knowledge into profit. For mines looking to improve recovery and optimise operations, understanding where and how gold occurs in their ore is the first step toward success.
