Mining jigs make use of gravity recovery in order to separate heavy minerals from the lighter gangue (waste material). Conventionally, mining jigs look similar to an upside down cone that is filled with water. Near the top is a grid, and material is placed above that grid. At the bottom is a motor which creates a pulse throughout the cone, allowing for small waves to be pulsated and the material to be dispersed on each pulse. The lighter particles take longer to settle and tend to hover near the top, whilst the heavier particles settle faster on the grid. Because the material is continuously dispersed, the heavy material is gradually trapped at the base of the grid, and the lighter particles are washed off the end of the jig and put aside as waste material.
Jigs are used to recover a variety of minerals that lie in alluvial deposits. Hard rock can also be ground to recover diamonds, gemstones, gold and coal. Jigging caters for a broad spectrum of minerals from alluvial ores to anthracites to gold and platinum. Jigging is known as the least time consuming method of separation in terms of preparation with most coals and ores of ferrous metals not requiring any form of crushing. APT make use of the GoldJigga, used to recover gold nuggets and gemstones present in your material. It is hand-powered, so easily used in remote areas and highly durable. This mining jig is available through emailing us, or online through on our store as it is also part of our start-up and small scale mining GroundBreaker range.
Fun fact: Jigs were used in Cleopatra’s time to separate wheat from chaff.