Slurry Pump Sizing Guide: Calculate Flow Rate & Pressure Requirements

Step-by-step calculation for slurry pump flow rate (GPM/m³/hr) and pressure (PSI/bar). Includes friction loss formulas, TDH adjustments, and material selection factors.

Key Parameters for Effective Slurry Pump Sizing

Accurate calculation of flow rate and pressure requirements prevents pump failure, reduces energy costs by 15-30%, and extends wear life. Critical input variables:

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Flow Rate Calculation

Formula Selection

\text{Flow Rate (Q)} = \frac{\text{Total Slurry Volume (V)}}{\text{Pumping Time (T)}}

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*Example: 500m³ tailings in 4 hours → Q = 125 m³/hr (550 GPM)*

Pressure Requirement Calculation

1. Total Dynamic Head (TDH) Components
\text{TDH (m)} = \text{Static Head} + \text{Friction Loss} + \text{Velocity Head}

• Static Head: Vertical elevation change (discharge – suction)
• Friction Loss: Use Hazen-Williams equation for slurries
  H_f = 10.67 \times \frac{Q^{1.852}}{C^{1.852} \times D^{4.8654}}
  *(C=110 for steel pipes; D=pipe diameter in meters)*
• Velocity Head: Often negligible

2. Slurry-Specific Adjustments

• Density Correction
  \text{Pressure (bar)} = \frac{\text{TDH} \times \rho_{slurry} \times g}{100,000}
• Viscosity Impact: Add 15-25% head for non-Newtonian slurries

Critical Correction Factors

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Pump Selection & Material Considerations

Performance Matching

• Select pump where Best Efficiency Point (BEP) aligns with (Q, TDH)
• Maintain operation within 70-120% of BEP

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Why Choose EVERGREEN

• Proven Efficiency: Hydraulic design achieves η>78% at duty point
• Modular Upgrades: HPK kits extend service life by 40-60%
• Material Expertise: Custom solutions from rubber to Cr30 alloys
• Global Support: 24/7 technical assistance for slurry systems
• 💡 Technical Tip: For slurries with d50 >5mm, combine rubber liners (impact resistance) with hardened steel throat bushes (abrasion protection).