Sapphire, excluding ruby, is a collective term for colored corundum gemstones, primarily composed of aluminum oxide. As a mineral crystal, sapphire occurs at low concentrations in its ore and requires mineral processing equipment to be separated from gangue and river sand.
1. Gravity Separation of Sapphire
Sapphires have a specific gravity of 4.0-4.1, significantly different from gangue minerals. Additionally, they exhibit a high degree of individual liberation, making them highly suitable for gravity separation. By utilizing jigging machines, sluices, and other gravity separation equipment, sapphires can be effectively recovered from placer deposits. This method offers a wide size range (0-50mm), high processing capacity, stable separation results, and high recovery rates.
2.Sapphire Beneficiation Process
1. Washing and Screening
Depending on the characteristics of the sapphire raw ore, trommel screen or trommel scrubber are used for washing and screening the sapphire ore. This process separates sapphire particles larger than 3mm from finer particles smaller than 3mm, which are then sent to jigs and sluices respectively.
2. Gravity Separation
Coarse sapphire particles (3-50mm) are separated using a jig (pulsator jig), where qualified sapphire crystals are screened.
Fine sapphire particles below 3mm are sent to sluices for further enrichment and separation of sapphires.
3. Dewatering
After gravity separation, dewatering screens are used to dehydrate the processed sapphire, preparing them for further treatment.
Forui Machinery provided a complete stationary alluvial processing plant for sapphire recovery, with an ore feed capacity of 100 tons per hour. The plant uses recycled water and offers benefits like low investment, high processing capacity, and excellent recovery rates without harming the environment. It effectively processes various gemstone ores, ensuring reliable performance, durability, and suitability for harsh conditions over the long term.
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