How do you determine the feed concentration for a automatic jigging machine?

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Dasen Mining recently supported a Nigerian tin ore project where gravity separation played a central role. The on-site processing line, equipped with automatic jigging machines, demonstrated how correct feed concentration and bed adjustment directly improve recovery rates and overall efficiency.

Why Choose Jig Separation?

Compared with other beneficiation technologies, jig machines offer:

  • High beneficiation efficiency
  • Consistent recovery performance
  • Flexible application to various mineral sizes

These advantages make jigging an essential method for tin and other heavy minerals in complex ore deposits.

double jigger 1 - How do you determine the feed concentration for a automatic jigging machine?

The Role of Feed Concentration

During beneficiation, feed concentration controls the horizontal flow within the jigging system.

  • Too low: Excessive water flow prevents proper stratification, causing valuable minerals to be lost in tailings.
  • Too high: Material cannot stratify by specific gravity, leading to reduced recovery.

For optimal performance, jig feed concentration should remain between 20–40% solids by weight, depending on ore characteristics. At this range, automatic feeding ensures steady separation.

Particle Size and Bed Design

In practice, separation efficiency also depends on bed thickness and particle size:

  • The artificial bed should typically range from 40–120 mm.
  • Bed particle size should be 3–5 times larger than the screened ore below it to allow proper stratification.

If the bed is too thick, stratification is delayed; too thin, and fines may be lost due to instability. The key is maintaining a stable bed motion to maximize separation precision.

Practical Outcome in Nigeria

With correct design and operation:

  • Recovery rates were significantly improved.
  • Gold content in concentrates was stabilized.
  • Tailings were reduced, contributing to greater economic efficiency.

For international projects, jig machines remain an indispensable part of tin ore beneficiation. Success depends not only on equipment quality but on expert guidance in process control. Dasen Mining’s field experience allows clients in Nigeria and beyond to achieve higher recovery, longer equipment life, and more predictable results.

Contact Dasen Mining today to discuss flowsheet design, equipment selection, and on-site support for your beneficiation project.

We can provide you with more information about beneficiation. If you have any questions, please contact: Whatsapp:+86 133 1927 7356
Email:[email protected]