Salave Gold Project: Crushing, Grinding & Flotation Circuit Overview

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  • Project: Salave Gold Project in Asturias, Spain, developed by Black Dragon Gold Corp. (Technical Report: May 2025).
  • Process Flow: Two-stage crushing (jaw + cone crusher) → ball mill grinding (target: 80% passing 75µm) → bulk sulphide flotation (rougher + cleaner stages).
  • Key Reagents: Potassium amyl xanthate (PAX) collector, CuSO4 activator, and MIBC frother.
  • Concentrate: Targets ±65 g/t Au, dewatered via thickener + pressure filter for transport.
  • Tailings Management: Thickened tailings split between pastefill (cemented backfill for underground) and TSF storage (passivated with cement).
  • Throughput: Assumes ROM blend of Upper Zone (pyrite-rich) and Lower Zone (arsenopyrite-rich) ore.
  • Innovation: Simplified flotation circuit with no regrind, reducing operational complexity.

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