How to Select the Right Shaking Table Riffle Type Based on Ore Particle Size? A Comprehensive Guide to Shaking Table Selection

I. Three Mainstream Shaking Table Riffle Types and Their Applicable Particle Sizes

• Typical Models: 6-S Shaking Table
• Typical Riffle Count: Represented by 46-riffle and 60-riffle, featuring wide spacing and high riffles.
• Application Scenarios: Placer gold, hematite, roughing operations for tungsten and tin ores, etc.
• Characteristics: Deep riffles, large stroke (8–36mm), and lower frequency (240–300 strokes/min). Suitable for processing large-particle, high-density minerals.
• Advantage: High processing capacity, suitable for high-throughput requirements.

• Typical Models: Yunxi-style Shaking Table, 6-S Fine Sand Type
• Typical Riffle Count: 88-riffle, 110-riffle, with moderate spacing and riffle height.
• Application Scenarios: Fine-grained tungsten/tin ores, gold concentration, magnetic separation tailings recovery, lead-zinc and iron ore cleaning, etc.
• Characteristics: Denser riffles, moderate stroke (10–20mm), and higher frequency (300–380 strokes/min), facilitating the settling of fine heavy minerals.
• Advantage: Clear banding, capable of producing high-grade concentrate (grade ≥60%).

• Typical Models: Slime Shaking Tables
• Typical Riffle Count: Includes 120-riffle, 138-riffle, 150-riffle models, featuring narrow spacing and sawtooth or grooved riffles.
• Application Scenarios: Micro-fine cassiterite, slime gold, silver and other precious metals, deslimed tailings treatment.
• Characteristics: Smooth riffle or shallow groove design, small stroke (8–15mm), high frequency (320–380 strokes/min), and small cross slope (1°–2°) to prevent fine slime from being washed away.
• Note: Pre-desliming is required to avoid high slurry viscosity affecting separation. 

II. Three-Step Selection Method: Precisely Matching Ore Particle Size

• If +0.5mm content is high → Choose Coarse Sand Shaking Table.
• If 0.074–0.5mm is dominant → Choose Fine Sand Shaking Table.
• If -0.074mm is dominant → Choose Slime Shaking Table (or a combined process).

• High throughput, ample space → Single-deck Coarse/Fine Sand Shaking Table.
• Limited space → Choose Multi-layer Shaking Tables (e.g., 4-layer Shaking Table), saving over 30% of floor space.

III. Common Misconceptions and Optimization Suggestions

• Coarse material: Increase wash water to speed up tailings discharge.
• Fine material: Reduce cross slope to extend separation time.
• All types: Maintain uniform feeding to avoid banding fluctuations.

IV. Quick Selection Guide

• Is your ore size >0.5mm? → Prioritize 46 or 60 riffles to guarantee throughput.
• Is your ore size 0.074–0.5mm? → Recommend 88 riffles to balance efficiency and recovery.
• Is your ore slime or flotation tailings? → Must choose 120 riffles to maximize fine particle recovery.
• Throughput Priority? → Choose 46/60 riffles + High-power motor (above 1.1kW).
• Grade Priority? → Choose 88/120 riffles + Precise slope adjustment + Stable stroke control.

V. Frequently Asked Questions (FAQ)