20TPH Gravity Gold Concentrator Small Scale Mining Ore Equipment

Mobile gold jigger machine for small scale mining

1.Product Introduction Jigger machine

A Mobile Gold Gravity Concentrator is an integrated and transportable mineral processing unit centered around a Saw-tooth Wave Jig. It utilizes the density difference between minerals to separate gold from gangue in a vertically pulsating water stream. Typically mounted on a trailer, chassis, or mobile frame, the unit is designed for rapid relocation between mining sites, making it ideal for small-scale or artisanal mining operations in areas with dispersed resources or poor infrastructure.

2.Application Jigger machine

This equipment is primarily used in the following scenarios:

• Alluvial Gold: Recovering gold particles from the gravel layers of rivers and streams.

• Placer & River Sand: Processing riverbed sediments and sandy mineral deposits.

• Clay Deposits: Used in high-clay areas in conjunction with washing equipment.

• Other Heavy Minerals: Also applicable for recovering high-density minerals such as diamonds, cassiterite (tin), and wolframite (tungsten).

3.Working Principle Jigger machine

The mobile gold gravity concentrator operates based on the principle of gravity separation, with the core process as follows:

1. Feeding and Pre-treatment: Raw ore (usually a mixture of sand and gravel) is fed into a hopper and passes through a Trommel Screen for washing and screening. This removes large waste rocks and breaks down clay.

2. Gravity Separation: The screened fine material enters the Saw-tooth Wave Jig. The jig generates an asymmetrical pulsating water flow (saw-tooth waveform), characterized by a fast, short upward stroke and a slow, long downward stroke.

3. Stratification and Discharge: Under the action of the pulsating water, the material bed is repeatedly loosened and settled. High-density gold particles settle faster, accumulating at the bottom of the bed to be discharged as concentrate. Low-density gangue is lifted by the upward current and discharged from the top as tailings.

4. Integrated Processing: In mobile wash plants, the jig tailings are sometimes sent to a Sluice Box for secondary recovery to maximize the total gold recovery rate.

4.Advantages Jigger machine

Compared to traditional methods, the mobile gold gravity concentrator offers several significant benefits:

• High Recovery Rate: The saw-tooth wave jig is far more efficient at capturing fine gold than traditional sluices, effectively recovering microscopic particles and boosting overall yield.

• Superior Mobility: The entire unit can be quickly disassembled and transported, meeting the needs of small-scale miners who frequently move between extraction points and reducing fixed investment costs.

• Ease of Operation: Featuring a high degree of integration, it requires relatively low technical expertise from operators and is easy to maintain.

• Eco-friendly and Safe: Unlike the amalgamation method which uses mercury, gravity separation is an environmentally friendly, non-toxic process. Many models offer diesel or electric power options to adapt to various energy conditions.

• High Cost-Effectiveness: With relatively low equipment investment and operating costs, it offers a short return on investment (ROI), making it an ideal choice for small-scale mining.

5.Technical Specifications Jigger machine

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