- Project Overview: Perseus Mining’s Nyanzaga Gold Project in Tanzania (Feasibility Study completed June 2025) features a 5Mtpa gold processing plant designed by Lycopodium Minerals.
- Key Circuit Components:
– Crushing: Metso Superior MKIII gyratory crusher (375 kW)
– Grinding: SAB circuit (9.75m SAG mill + 7.32m ball mill, 10.5MW each)
– Gravity Recovery: Centrifugal concentrators + intensive cyanidation
– Leaching: 24-hour CIL circuit (6×3,250m³ tanks) with pre-oxidation
– Gold Recovery: Split AARL elution + electrowinning - Design Parameters:
– Target grind size: P₈₀ 75µm
– Gold recovery: 86% (design)
– Gravity recovery: 30% of total gold
– Throughput flexibility: 4.76-6.0Mtpa depending on ore characteristics - Mercury Handling: Dedicated abatement system for 1.1g/t Hg feed, including retort oven and carbon filtration.
- Water Management: 90%+ water recycling via thickeners and TSF decant system, with Lake Victoria as primary raw water source.
- Power Demand: 28.6MW average draw (250.8GWh/year), primarily for grinding (158.6GWh/year).
- Ore Blend: 11.7% oxide + 88.3% fresh ore (mudstone/sandstone dominant) over LOM.
Nyanzaga Gold Project: 5Mtpa Processing Circuit with SAB Grinding & CIL Recovery
By
/ July 17, 2025 