Small-scale alluvial tin ore beneficiation equipment configuration
March.27,2026
Alluvial tin ore beneficiation process
Feeding and washing: Raw ore usually contains mud, which will cause blockage if fed directly into the beneficiation equipment. It needs to be washed first through a drum screen or washing machine using a high-pressure water gun to break up the clay clumps and remove large pieces of waste rock (such as +20mm pebbles).
Classification: The material is separated into coarse particles (e.g., +2mm) and fine particles (-2mm).
Roughing (enrichment):
Coarse particles: fed into a jig. Pulsating water flow allows the heavier cassiterite to sink, while the lighter sand floats.
Fine particles: fed into a spiral chute. Centrifugal force and gravity are used for separation on the spiral chute surface. No power consumption is required, making it suitable for processing very fine particles.
Concentration (refining):
The rough concentrate obtained from the roughing process is not high enough in grade and needs to be further refined by a shaking table to finally obtain a high-grade (Sn>60%) tin concentrate.
Equipment list (recommended for small lines)
| Equipment Name | Recommended Model | function |
|---|---|---|
| trommel screen | trommel screen | Clean the raw ore and screen out large pieces of waste rock to prevent blockage. |
| Jig | Diaphragm Jig/Hydraulic Jig | Treats coarse and medium-sized particles, high recovery rate, large throughput. |
| Spiral Chute | Fiberglass Spiral Chute | Processes fine particles, requires no power, and is low-cost. |
| Shaking Bed | 6-S Shaking Bed | Final selection yields high-grade concentrate. |
| Slurry Pump | Wear-resistant Slurry Pump | Slurry Conveying |
