Three Piston Jig
Three Piston Jig
Jig Mineral Processing

Three Cell Plunger Jig

DESCRIPTION

The Three-Cell Plunger Jig is a high-capacity laboratory gravity separation unit designed for multi-stage, density-based concentration of mineral feeds. Three separation cells, each driven by its own independent plunger, operate in series — providing sequential cleaning stages within a single machine. This makes the unit particularly well suited to evaluating concentration potential and stagewise recovery.

Features:

  • Adjustable Pulsation Rate: Continuously variable from 0 to 300 RPM via an electronic motor speed controller, providing precise control for different ore types and process conditions.
  • Three Separation Cells: Each cell measures 200 × 275 mm and is driven by an independent plunger, enabling sequential, multi-stage separation in a single pass.
  • Bottom Screens: Each cell is fitted with a bottom screen; standard apertures of 1 mm, 2 mm, 3 mm, and 4 mm are supplied to suit a range of feed sizes.
  • Robust Steel Frame: Three 200 × 275 mm cells integrated into a heavy-duty steel construction for long service life and stable operation.
  • Eccentric Shaft & Bearings: The eccentric drive shaft runs in wear-resistant bronze bearings, ensuring smooth pulsation transfer and extended maintenance intervals.
  • Independent Valve Control: Each cell features its own bottom discharge valve and a dedicated top water make-up valve, allowing bed level and water consumption to be tuned independently at every stage.
  • Nominal Capacity: Up to 15 kg/hour; actual throughput depends on feed characteristics and particle size.

The Three-Cell Plunger Jig is optimised for laboratory-scale multi-stage gravity concentration, offering the precision and operational flexibility required to evaluate mineral processing flowsheets.

TECHNICAL DATA

Power and Electricity 0.75kW, 380 V, 3p, 50 Hz

Working Principle

Plunger jigs separate mineral particles based on differences in density. A reciprocating plunger generates an up-and-down pulsation in a water-filled cell, fluidising the particle bed and allowing denser minerals to settle through lighter ones.

  1. Pulp Preparation: A water-and-solids slurry of controlled density is fed to the jig.
  2. Pulsation Motion: The reciprocating plunger generates rhythmic vertical water motion within the cell.
  3. Density-Based Separation: Heavier particles settle through the bed while lighter ones rise, producing distinct density layers.
  4. Layered Stratification: The bed organises into a heavy concentrate layer at the bottom and a lighter tailings layer above.
  5. Product Collection: Concentrate and tailings are discharged separately through the bottom and overflow outlets.

Plunger jigs are widely used in mineral concentration, coal washing, and other gravity-based separation applications. Their mechanical simplicity, low operating cost, and high efficiency make them a benchmark tool in mineral processing laboratories.

In a multi-cell configuration like this one, the three cells operate in series so that each successive cell acts as a cleaning stage on the previous cell’s overflow, progressively upgrading the concentrate.