What equipment is required for gold extraction?

Gold possesses a relatively high specific gravity of approximately 19.32, whilst gangue in ore typically exhibits a specific gravity of 15.60 or higher. Consequently, gravity separation plays a crucial role in the processing of placer gold. Employing gravity separation prior to flotation and leaching enables the preferential extraction of coarse-grained gold, preventing its loss into tailings. This significantly reduces cyanide leaching duration and lowers cyanide consumption. Consequently, gravity separation serves as a vital auxiliary method and is widely utilised. It offers advantages including a straightforward process, easily controlled and managed equipment, direct product output, relatively low costs, and minimal pollution.

The sluice box represents the most primitive equipment for gravity separation of placer gold. Employing water as the medium, it separates and concentrates gold from sandy ore. Its separation principle leverages water flow over inclined plates, causing mineral particles of differing densities to form loose, suspended, and settled layers. This process accounts for the grain size and shape of gold particles, thereby achieving effective gold separation.

The Nelson concentrator offers an enhanced option for gold production through pollution-free gravity separation technology, pioneering a new pathway for early recovery of free gold during processing. Numerous gold processing plants now employ the Nelson concentrator as an alternative to amalgamation methods. It maintains nearly identical recovery rates while delivering environmental benefits and exceptionally low operational costs.

The fully automated cyclone gold reclaimer represents an innovative, pollution-free mineral processing equipment with high recovery rates. It replaces chemical gold separation methods without employing any chemical reagents, fundamentally preventing mercury contamination. This fully automated cyclone reclaimer not only recovers free-size gold particles but also captures fine-grained gold, ultrafine gold, and associated metallic minerals.