Introduction: The Industrial Value of Slurry Pumps
Slurry pumps serve as core conveying equipment in industries such as mining, metallurgy, and chemical processing, undertaking the critical task of transporting highly abrasive, high-concentration solid-liquid mixtures. According to 2024 data from the China Heavy Machinery Industry Association, the global slurry pump market has surpassed $5.2 billion, with China accounting for 38% of the market share.
1. Core Knowledge System of Slurry Pumps
1.1 Basic Definition and Working Principle
1）Professional Definition: A slurry pump (Slurry Pump) is a centrifugal pump specifically designed for transporting slurries containing solid particles.
2）Prinsip Kerja: The rotation of the impeller generates centrifugal force, imparting kinetic energy to the solid-liquid mixture (Key parameters: Head 30-150m, Flow rate 10-6000m³/h).
2. Comparison of Mainstream Types
| Project Site | Company | Application Scenario |
| Phosphoric acid slurry in phosphate fertilizer production | Anhui Changyu Pump And Valve (CHANGYU) | Fluoroplastic slurry pumps, corrosion-resistant horizontal centrifugal pumps. |
| River dredging | Grundfos | Submersible slurry pumps. |
| Mine tailings transportation | Shijiazhuang Industrial Pump Factory | Vertical submerged pumps, chemical slurry circulation pumps. |
| Blast furnace slag treatment in steel plants | Anhui Changyu Pump And Valve (CHANGYU) | High-temperature slurry pumps (with cooling system, heat-resistant alloy steel material such as CD4MCu). |
1. Key Performance Indicators
1）Wear Rate: Hard alloy lining with HRC58 or higher
2）NPSHr: ≤4.5m
3）Efficiency: Heavy-duty pumps achieve 75-82%
2. Selection Decision Tree
2.1 Medium Characteristics Analysis
Particle Size: μm-level to mm-level
Concentration Range: 5%-70% wt
pH Value: Acidic/Alkaline medium
2.2 Operating Condition Matching
1）98% Concentrated Sulfuric Acid Circulation (80°C): CYF Series (Fluoroplastic-Lined Pump) — CYF80-50-250
2）High-Hardness Mineral Slurry (Quartz Sand Tailings, SiO₂ Content >90%): CYH Series (High-Chrome Alloy Pump) — CYH150-400B
3）Titanium Dioxide Acid Digestion Filtration (20% Sulfuric Acid + Titanium Slag):Fluorine-Lined Filter Press Pump (PTFE Back Ring on Impeller, Outlet with Safety Pressure Relief Valve) — CYF80-65-160
3. Fluoroplastic Slurry Pump Maintenance Instructions
3.1 Daily Operation Maintenance
1） Vibration Monitoring
Daily inspection of bearing vibration value (should be ≤4.5mm/s)
Abnormal vibration requires immediate impeller balance check
2） Sealing System Management
Mechanical seal flush water pressure must be maintained 0.1-0.2MPa higher than pump chamber pressure
Weekly inspection of seal leakage (normal ≤5 drops/minute)
3.2 Periodic Maintenance Standards
1） Flow-Part Inspection
Measure fluoroplastic lining thickness every 500 hours (wear allowance ≥3mm)
Impeller and wear ring clearance should be 0.5-1.0mm
2） Lubrication System
Bearings: Replace grease every 2000 hours (recommended PTFE-based grease)
Motor bearings: Annual cleaning and oil change
3.3 Special Condition Handling
1）Crystalline Medium Treatment
Flush pump chamber with clean water after shutdown (especially when handling crystallizing media)
For long-term shutdowns, drain residual liquid and perform drying treatment
2）Temperature Control
Monitor lining thermal deformation when medium temperature >80°C
Avoid sudden cooling/heating
