Somaliland 200t/h Alluvial Gold Ore Beneficiation Plant

XINHAI SOLUTION

• 01

  Raw Ore Screening: A circular vibrating screen is used to remove oversized stones and debris. The particle size is generally controlled below 25 mm to ensure subsequent sorting efficiency.

• 02

  Washing & Crushing: A trommel scrubber washes and breaks down clay clusters, releasing free gold particles. The slurry concentration after washing is controlled between 30% and 40% solids.

• 03

  Gravity Pre-enrichment: Centrifugal Concentrator is employed to recover coarse gold. After pre-enrichment, the gold concentrate yield is typically 1%–3% of the raw ore, with a gold recovery rate reaching 60%–80%.

• 04

  Amalgamation: The gold-rich concentrate is mixed with mercury (Hg) to form amalgam (gold content: 30%–50%). The mixture is then filtered or distilled to separate and recover the mercury, yielding sponge gold.

• 05

  Amalgam Distillation & Gold Recovery: The amalgam is heated in a sealed furnace at 300–400 °C, causing mercury to volatilize. The vapor is condensed and collected for reuse, leaving behind sponge gold.

• 06

  Mercury Recycling & Environmental Protection: A closed-loop condensation and activated carbon adsorption system is installed to recover mercury and prevent environmental contamination in compliance with green production standards.