What is a Slurry Pump: The Complete Guide‌

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）Working Principle‌: 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).

1.2 Comparison of Mainstream Types

3. 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 (‌ Hot Tags : heavy duty slurry pump industrial slurry pump mining slurry pump best pump for slurry electric submersible slurry pump diaphragm slurry pump