Sapphire production lines and process solutions

Sapphire Production Line and Process Solution

Sapphire (corundum, Al₂O₃) beneficiation is based on the core process of "washing-screening-gravity separation-photoelectric separation", which ensures the efficient recovery of high grade sapphire and protects the integrity of gemstone crystals.

I. Sapphire beneficiation process

1. Sapphire washing and screening system

Purpose: To remove clay, sand and surface adherents, and improve the subsequent sorting efficiency.

• Rotary scrubber (with high-pressure water spray):

  • Processing capacity: 20-100 t/h

  • Remove -0.5mm fine mud to prevent clogging of subsequent equipment.

• Double-deck vibrating screen (stainless steel screen):

  • Grading size: +5mm, 5-2mm, 2-0.5mm, -0.5mm

  • The upper part of the screen (+5mm) is manually picked to remove the large waste stones.

2. Sapphiregravity enrichment system

Purpose: Pre-enrichment utilizing the density difference between sapphire (density 3.95-4.03 g/cm³) and quartz/feldspar (density 2.6-2.8 g/cm³).

• Jigger (sawtooth wave type):

  • Processing 5-0.5mm grain size, recovery rate of more than 85%

  • Stroke, stroke adjustable, adapted to different particle size sapphire

• Spiral concentrator (for -0.5mm fine grain size):

  • Recover fine-grained sapphire, reduce losses

3. Sapphireselection and purification system

Purpose: further improve the purity of sapphire, remove garnet, zircon and other associated minerals.

• Shaking table selection (6-S type fiberglass shaking table):

  • Processing jigging rough concentrate, improving sapphire grade

• Optical sorting machine (X-ray/XRF/Laser sorting):

  • Sorting based on Fe/Ti elemental characteristics or fluorescence properties of sapphire

  • Purity up to 98% or more, processing capacity 1-10 t/h

• Electrostatic sorting machine (optional):

  • Utilizing the difference in electrical conductivity between sapphire and garnet sorting

Second, the main equipment configuration

Third, sapphire production line process advantages

✅ High efficiency recovery

• Combination of jigging + photoelectric sorting, recovery rate >90%.

• Adapt to 0.5-30mm full-grain sapphire.

✅ Economic and energy saving

• Low running cost of jigger, energy consumption is only 1/3 of heavy media beneficiation.

• Photoelectric sorting has no consumables and low long-term cost.

✅ Environmental protection and safety

• No chemicals, recycling of washing water

• Photoelectric sorting without pollution, in line with environmental requirements

✅ Stable and reliable

• Simple equipment structure, low failure rate

• Simple operation and maintenance, adaptable to all kinds of sand ore

Typical process indicators

V. Sapphire beneficiation technology service support

✔ Program design: customized sapphire beneficiation process design, site planning, drawing design
✔ Equipment supply: jigger, photoelectric sorting machine, shaking table and other complete sets of equipment
✔ Installation and commissioning: on-site guidance to ensure stable operation of the production line
✔ Operation training: staff training, improve sorting efficiency

The sapphire beneficiation process plan adopts "washing-screening-jigging-photoelectric separation" process, which ensures high recovery rate and high purity, and is suitable for sapphire beneficiation in Sri Lanka, Madagascar, Australia and so on. If you need customized sapphire production line plan or equipment selection, welcome to contact us!