As large-scale mineral exploitation expands across domestic mining sites, traditional gravity thickening tanks can no longer meet high-efficiency, low-cost slurry concentration demands. GN Separation has rolled out its flagship GNLW764 decanter centrifuge with a 30-inch (764 mm) bowl diameter, tailor-made for continuous mining slurry thickening and solid-liquid separation, delivering outstanding throughput and stable dewatering performance for medium-to-large mineral processing plants.
The 30-inch bowl stands as GN’s largest standard decanter model, engineered to solve core pain points in mining slurry treatment. Unlike small and medium centrifuges with limited processing volume, its oversized rotary bowl creates a broader centrifugal force field and larger settling area, supporting ultra-high continuous feed flow. High G-force accelerates sedimentation of fine mineral particles within seconds, separating concentrated solid sludge and clarified water simultaneously through independent discharge outlets. The adjustable differential speed between the bowl and screw conveyor ensures uninterrupted 24/7 automatic operation, cutting manual labor input drastically compared with intermittent filter presses or settling ponds.
Durability against abrasive mining slurry is the core design priority. The entire bowl adopts centrifugal-cast duplex stainless steel, featuring strong mechanical strength and acid-alkali corrosion resistance to withstand long-term contact with mineral slurry containing sharp solid particles. All screw flight surfaces and solid discharge ports are covered with replaceable tungsten carbide tiles, the industry’s top wear-resistant material, which extends service life by over three times and lowers frequent spare part replacement costs. Reinforced structures on vulnerable zones further reduce downtime for maintenance in harsh mining environments.
Equipped with full VFD intelligent control, this 30-inch decanter enables on-site operators to adjust bowl rotation speed, differential torque and pond depth flexibly based on fluctuating slurry solid content. Such customized parameter tuning maximizes slurry concentration efficiency, generating high-density underflow that slashes downstream transportation volumes and logistics expenses. Meanwhile, clear overflow water can be recycled back to mineral processing lines, realizing closed-loop water circulation and reducing mine water consumption and discharge pressure.
Compared with conventional thickening equipment, GN’s 30-inch decanter boasts a compact footprint without occupying massive land for settling tanks. It produces consistent concentrated slurry quality and recovers more valuable fine minerals lost in traditional gravity separation. For domestic mining operators, one single large-bowl centrifuge can replace multiple small units, simplifying system layout and cutting overall investment. With rigorous factory testing and successful on-site commissioning at multiple domestic mining projects, GN’s 30-inch decanter centrifuge proves a reliable, cost-effective solution for modern slurry concentration. As a full-spectrum separation equipment manufacturer covering 9-inch to 30-inch bowl sizes, GN continues to customize heavy-duty centrifuges to help mines boost productivity, control operational costs and advance sustainable mineral resource utilization.