SPECIFICATION SHEET • SI METRIC
CAT: PROCESS
Screening Efficiency Calculator
Calculate vibrating screen efficiency based on undersize recovery in screen undersize stream (VSMA method).
💡 Engineering Knowledge PrimerScreening Efficiency measures how effectively a vibrating screen separates undersize fines from oversize coarse material. High oversize carryover of undersize particles reduces crusher efficiency and wastes grinding energy on already-liberated material.
CALCULATION SCOPE — Deterministic calculation within the published assumptions. Independently verify all design decisions and project-specific code requirements.
INPUT DESIGN PARAMETERS (SI)
%
%
CALCULATED SPECIFICATION OUTPUT
Screening Efficiency (E)
✨92.11 %
| Undersize Misplacement to Oversize | 7.89 % |
Technical Methodology & Engineering Principles
GOVERNING EQUATION
Efficiency E = 100 × (Feed % - Oversize %) / (Feed % × (100 - Oversize %) / 100)
Assumptions & Scope
Vibrating Screen Manufacturers Association (VSMA) standard equation.
Operating Range & Boundary
Use finite, physically meaningful inputs within the stated operating assumptions.
Peer Reference: VSMA Vibrating Screen Application Handbook, Section 3.