How Does Placer Gold Beneficiation Achieve Recovery Rates up to 99%?

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lacer gold deposits are widely distributed and form an important source of gold production. Due to their loose structure, simple mineral composition, and the high density contrast between gold and gangue minerals, these deposits are particularly suitable for gravity separation. This method allows for efficient recovery of gold without the need for complex chemical processes, making it one of the most practical and cost-effective beneficiation methods for placer gold mines.

Why Gravity Separation is Ideal for Placer Gold

Placer gold is usually found in the form of natural gold particles mixed with quartz, feldspar, and other non-metallic minerals. Since gold has a much higher specific gravity than these gangue minerals, gravity separation equipment can easily achieve high recovery rates.

Key advantages of gravity separation include:

  • High recovery rate: Laboratory and pilot projects have demonstrated recovery rates of up to 99.34% when combined with proper ore preparation.
  • Energy-saving and environmentally friendly: The process avoids harmful chemicals, reducing environmental impact.
  • Cost-effective: Gravity separation equipment has relatively low operating costs and simple maintenance.
  • Adaptability: This method is effective across a wide range of placer gold ore types.

西非 印尼 砂金1 1030x368 - How Does Placer Gold Beneficiation Achieve Recovery Rates up to 99%?

Case Study: Placer Gold Project in West Africa

Dasen Mining conducted a beneficiation pilot project in West Africa. Testing of ore samples showed:

  • Gold grade in ore: 22 g/t
  • Metallic minerals: Mainly magnetite and natural gold
  • Non-metallic minerals: Mainly quartz and feldspar

Results of Gravity Separation Tests

  • Direct gravity separation: Achieved 380.31 g/t concentrate with a 98.78% recovery rate.
  • Gravity separation after grinding: Produced 93.46 g/t concentrate with a 99.34% recovery rate.

These results demonstrate that gravity separation, especially when combined with grinding, can significantly increase the gold recovery rate.

Equipment for Placer Gold Mining

Efficient beneficiation requires specialized placer mining equipment. Dasen Mining provides a range of machinery designed for different ore conditions and production scales:

  • Mobile drum washing machine – Removes clay and impurities, improving downstream separation efficiency.
  • Mobile drum screen (trommel) – Screens different size fractions for efficient processing.
  • Fully automatic gold separation chute – Recovers fine gold particles through gravity concentration.

By selecting the right combination of equipment, high recovery and stable output can be ensured.

Choosing the Right Beneficiation Method

  • Single-metal placer deposits: Gravity separation alone is sufficient.
  • Multi-metal deposits: While gravity separation remains the main method, additional processes may be needed to recover other valuable metals.

After-Sales Support

Dasen Mining not only supplies high-performance beneficiation equipment but also provides:

  • On-site installation and commissioning
  • Training for operation and maintenance
  • Technical support for process optimization
  • Spare parts supply and long-term service

This ensures that clients can achieve stable production and maximize recovery over the long term.

Placer gold deposits are highly suitable for gravity separation, which remains the most efficient, economical, and environmentally responsible method of beneficiation. With advanced equipment and reliable after-sales service, high recovery rates of over 99% can be achieved, enabling mining companies to fully unlock the potential of their placer gold resources.

We can provide you with more information about the gold gravity processing plant. If you have any questions, please contact:

Whatsapp:+86 133 1927 7356
Email:[email protected]