This project is a complete 50 tph rock gold beneficiation process plant located in Niger, with all equipment and process design provided by JXSC Mining Machinery. The facility encompasses the full processing workflow, including crushing, screening, grinding, and gravity beneficiation. It utilizes a closed-circuit configuration—comprising a jaw crusher, cone crusher, and vibrating screen—to ensure uniform, controllable particle size and enhance grinding efficiency. A combined gravity separation process using centrifugal concentrators, shaking tables, and sluice boxes is used; this method requires no chemical reagents, making it eco-friendly and cost-effective. The entire rock gold beneficiation process plant features a three-stage recovery design, a compact layout, and maximizes the gold ore recovery rate.
50TPH Rock Gold Beneficiation Process Plant
The raw ore enters the vibrating feeder through the silo to achieve uniform and quantitative feeding and avoid equipment overload. A jaw crusher performs primary (coarse) crushing, reducing large ore blocks to a medium size in preparation for subsequent fine crushing. An iron remover is employed after primary crushing to promptly eliminate any tramp iron mixed with the ore, effectively protecting the cone crusher from damage. The cone crusher then carries out secondary (fine) crushing, further reducing the ore to the finer particle size.
The crushed material enters vibrating screens (with 20mm/40mm specifications) for classification. Oversized material (+20mm) is returned to the cone crusher via a return conveyor, establishing a closed-circuit crushing loop to ensure all ore meets the required particle size. Undersized material (-20mm), serving as the qualified product, is transported by conveyor to a surge bin for temporary storage and subsequently discharged uniformly to the next processing stage via an electromagnetic vibrating feeder.
Material from the intermediate storage bin is fed simultaneously into the ball mill via two conveyor belt lines to enhance feeding efficiency. The ball mill performs wet grinding, reducing the ore to the fineness required for beneficiation and ensuring the thorough liberation of gold minerals from gangue minerals. The resulting slurry is transported by slurry pumps to a slurry tank, providing a stable feed for subsequent beneficiation operations.
The slurry first enters a centrifugal concentrator for gravity roughing. By utilizing a high-magnitude centrifugal force field generated through rapid rotation, the concentrator causes gold minerals—which have a higher specific gravity—to settle and concentrate rapidly, thereby producing a rough concentrate. Characterized by high processing capacity and the ability to recover particles across a wide size range, the centrifugal concentrator efficiently captures gold minerals during the roughing stage.
The rough concentrate produced by the centrifuge is fed into a shaking table for fine separation. The shaking table utilizes the combined action of reciprocating deck motion and water washing to separate mineral particles of varying specific gravities along different paths, ultimately yielding a high-grade gold concentrate. Tailings discharged from both the centrifugal concentrator and the shaking table are combined and fed into a sluice box for scavenging and further recovery, thereby minimizing gold mineral losses. The final discharge from the sluice box constitutes the ultimate tailings, which are disposed of in compliance with standards.
English English 
Spanish
French
Russian
