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 1.1 kW, 230 V, 50/60 Hz
Dimensions 600 × 1700 × 1500 mm
Weight 100 kg

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.