High underflow density High Efficiency Thickener for tailings dry stacking

1.Product Introduction High Efficiency Thickener

The High Underflow Density High Efficiency Thickener is a core pretreatment system specifically engineered for tailings dry stacking processes. By leveraging the synergy of gravity sedimentation and advanced flocculation technology, it concentrates mineral tailings slurry (10%–30% solids) into an underflow concentration of 40%–75%. This significantly alleviates the load on downstream dewatering equipment and provides the high-concentration material foundation required for dry stacking or underground backfilling. Integrating inclined settling plates, central/peripheral rake assemblies, and intelligent dosing systems, it is a key piece of equipment for "green mine" construction.

2.Application High Efficiency Thickener

This equipment is widely utilized across the following sectors:

• Mining: High-efficiency thickening and dewatering pretreatment for iron, gold, copper, and molybdenum tailings.

• Metallurgy & Chemicals: Clarification of hydrometallurgical leachates and thickening of chemical waste residues.

• Environmental Engineering: Solid-liquid separation for industrial wastewater, coal slime water treatment, and municipal sludge pre-thickening.

• Resource Recovery: Achieves water recycling rates of over 90%, supporting closed-loop circulation systems.

3.Working Principle High Efficiency Thickener

The system operates through a three-stage mechanism: Flocculated Sedimentation + Thick-Phase Filtration + Mechanical Scraping.

1. Accelerated Flocculation: Polymer flocculants (such as PAM) are added to aggregate fine particles into large flocs, increasing the settling velocity by 3–5 times.

2. High-Efficiency Sedimentation: The inclined plate structure shortens the settling path and increases the effective sedimentation area. The forming thick-phase layer acts as a self-filtering membrane to further capture fine particles.

3. Underflow Discharge: A rotating rake assembly operates at a low speed (0.5–1.5 r/min) to push the high-density underflow (>60%) toward the central discharge outlet. The overflow consists of clarified water (turbidity <30 NTU) recycled back into the processing circuit.

4.Advantages High Efficiency Thickener

• Superior Underflow Density: Underflow solid content can reach 65%–75%, far exceeding the 30%–50% of traditional thickeners, which drastically reduces the workload for filter presses.

• Energy Saving & Efficiency: Reduces energy consumption per unit by over 30% and maintains a water recycling rate above 90%, complying with green mining standards like GB 39496-2020.

• Compact Footprint: The optimized deep-cone or high-aspect-ratio design provides a processing efficiency per unit area 3–8 times higher than traditional equipment.

• Intelligent Control: Features integrated concentration sensors, automated dosing systems, and remote monitoring for unmanned operation.

• Operational Stability: Anti-clogging discharge designs (such as high-pressure bottom flushing) ensure continuous operation for over 3 months without failure.

5.Technical Specifications

6.Our Solutions