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Alluvial Gold Extraction Machinery

Gold ore extraction may be conducted using either surface or underground technique. The most predominant surface mining method used to extract gold ore is open-pit. Ore containing valuable minerals usually is surrounded by less valuable material. Various methods such as gravity concentration, flotation, panning, pyrometallurgy, cyanidation etc are available for the extraction of gold metal from its ores.

Zenith technology and service covers the complete range, from feasibility studies, plant design and equipment manufacture to project implementation and installation of process plants. With know how technology, we developed complete series of alluvial gold extraction machinery in South Africa, including copper extraction plant, copper crushing machine, copper pulverizer, screening plant, washing machine, separation machine, processing plant etc.

Alluvial Gold Panning Plant

Panning is the most ancient form of gravity concentration. The circular or back-and-forth shaking of ore and water in a pan causes the ore to stratify–the heavy minerals settle to the bottom of the pan while the lighter gangue can be washed off the top. Panning is the basic means of recovering gold from alluvial and high-grade
primary ore. They rely on pounding this ore with mortar and pestle and use pans for concentration.

Alluvial Gold Centrifugal Concentrator

Centrifugal concentrators were originally developed to improve gold recovery from alluvial sands. Since about 1990, they have been used increasingly for hard rock mines, which is now the largest area of application. Centrifugal concentrators consist of a vertical rotation bowl with a series of concentric rings that trap the gold. A centrifugal force is applied on the ore particles, in such a way that this force is 60 to 300 times higher than the gravitational force. The rotor is accelerated and feed slurry is introduced to the concentrating cone through a stationary feed tube.

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