En
Shaking table achieves separation through the reciprocating motion of the table surface and transverse water flow. When pulp flows on the inclined shaking table surface, heavy minerals move longitudinally along the table due to high inertia, while light minerals are washed away transversely by water flow, resulting in final separation.
Spiral chute relies on the combined action of gravity, centrifugal force and water flow. After pulp enters from the top of the spiral trough, it flows downward along the spiral track. Heavy minerals move toward the outer side due to high centrifugal force, while light minerals concentrate near the inner side, thus realizing separation.
Shaking table is suitable for processing fine materials with a particle size of 0.037–3 mm, and performs especially well for minerals with large density differences such as gold, tungsten and tin, but its processing capacity is relatively low.
Spiral chutes are suitable for processing materials with a particle size range of 0.02–0.3 mm. They perform excellently in processing iron ore, titanium ore and manganese ore, are commonly used for the preliminary concentration of minerals, and feature a relatively high processing capacity.
A single shaking table has a processing capacity of approximately 0.5–2 t/h and produces high-grade concentrate.
A spiral chute has a processing capacity of up to 3–10 t/h, making it suitable for large‑scale roughing operations.
In actual mineral processing, the core logic of equipment combination is roughing for tailings discarding → cleaning for grade improvement → scavenging for recovery. Through complementing different equipment in terms of particle size, processing capacity and enrichment ratio, a balance of high recovery rate + high grade + low cost is achieved. The following are the mainstream combination schemes in the gold mineral processing industry:
