Custom Froth Flotation Equipment Design For Complex Polymetallic Ores

Custom froth flotation equipment design for complex polymetallic ores

1.Product Introduction Ore Beneficiation Equipment

Customized Complex Polymetallic Flotation Equipment is an intelligent separation system specifically engineered for symbiotic sulfide ores containing Copper-Lead-Zinc-Gold-Silver. Breaking the limitations of traditional single-metal flotation, these systems utilize multi-chamber segmented cells, independent aeration control, and zone-specific reagent dosing to achieve high-precision selective separation. Leading domestic models, such as the XCF-II/KYF-II and the SF-JJF Composite series, feature a modular U-shaped cell structure with volumes ranging from 0.37 to 20 m³.

2.Application Ore Beneficiation Equipment

• Cu-Pb-Zn-Au Symbiotic Ores: Ideal for typical polymetallic deposits (e.g., Yunnan Jinchang, Jiangxi Dexing) to achieve simultaneous enrichment of Cu, Pb, Zn, Au, and Ag.

• Low-Grade Complex Ores: Serves as the primary process for refractory ores (grades <0.5% Cu, <0.1% Pb, <0.3% Zn), replacing traditional gravity-flotation combined circuits.

• Associated Precious Metal Recovery: Synchronously recovers gold (85–95% recovery), silver (80–90%), and rhenium (5–15%) in copper concentrates, maximizing economic value.

• Advanced Pb-Zn Separation: For high-zinc lead ores (Zn/Pb > 3:1), the "Zinc Suppression & Lead Flotation" circuit reduces Zn content in Pb concentrate to <2% and Pb in Zn concentrate to <1.5%.

• Plant Retrofitting: Increases capacity by 30–50% in older plants through the addition of XCF-II cells without expanding the floor area.

• Lab-Scale Verification: The CJM-60 small-scale unit (0.06 m³) is used for reagent screening and flow-sheet optimization with a repeatability error of <±2%.

3.Working Principle Ore Beneficiation Equipment

1.Slurry Preparation: Raw ore undergoes three-stage crushing and two-stage closed-circuit grinding to a particle size of ≤0.25 mm (-200 mesh) at 35–45% concentration.
2. Segmented Reagent Control:

•  Roughing: Butyl Xanthate (100–150 g/t) + #2 Oil (25–40 g/t) + Lime (pH 9–10) to prioritize copper flotation.
•  Pb Cleaning: CuSO₄ (50–80 g/t) to activate sphalerite, while NaCN (10–30 g/t) suppresses zinc minerals to achieve Pb-Zn separation.
•  Zn Cleaning: ZnSO₄ (100–200 g/t) + Sodium Sulfite (50 g/t) to strengthen sphalerite suppression and boost zinc concentrate grade.
•  Au Recovery: Amyl Xanthate (60 g/t) + Activated Carbon adsorption are added during tailings scavenging to recover residual micro-fine gold.

3. Circuit Strategies:

•  Differential Flotation: Cu → Pb → Zn → Au (for ores with distinct floatability).
•  Bulk Flotation: Cu-Pb bulk flotation followed by separation (for tightly symbiotic ores).

4. Aeration & Agitation Separation:

•  XCF-type: Forced air supply reduces energy consumption by 35%.
•  KYF-type: Dual-mode (self-suction + auxiliary aeration) provides a bubble surface area flux of ≥1.8 cm²/cm³.

5. Smart Froth Control: Adjustable weirs (150–300 mm) precisely control froth thickness to prevent gangue entrainment.
6. Closed-Loop Monitoring: PLC system dynamically adjusts impeller speed and aeration based on real-time data for "one-button" operation.

4.Advantages Ore Beneficiation Equipment

• High Selectivity: Cu-Pb selectivity index of 4.5–5.2; Zn concentrate Pb content <1.5%; Au recovery 85–95%.

• Comprehensive Recovery: Cu (96–98%), Pb (92–95%), Zn (94–97%), Au (85–95%), Ag (80–90%); increases overall recovery of associated elements by 25–40%.

• Energy Efficiency: Specific power of 0.6–1.0 kW/m³ (30–40% lower than traditional units), saving over 1.2 million kWh annually for a 100 t/d system.

• Modular Scalability: Supports parallel cell configurations for 5–500 t/d systems.

• Rapid Delivery: Customized services from manufacturers reduce delivery cycles to just 45 days.

• Intelligent O&M: Integrated AI predictive maintenance with >90% failure prediction accuracy, reducing downtime by 30%.

• Environmental Compliance: Zero cyanide discharge (closed-loop) and tailings dry-stacking rates >85%.

• Rapid ROI: For a 100 t/d system (Cu 0.8%, Au 0.5 g/t), payback is typically achieved in <8 months.

5.Technical Specifications

6.Our Solutions