Bauxite ore beneficiation in India involves various processes to improve the ore’s quality by removing impurities like silica, iron oxides, and other contaminants. The choice of beneficiation machines depends on the specific characteristics of the bauxite deposit. Here are some commonly used machines and techniques in India:
1. Crushing & Screening Equipment
– Jaw Crusher: Primary crushing of raw bauxite.
– Cone Crusher / Impact Crusher: Secondary crushing for finer particle size.
– Vibrating Screens: Classify crushed bauxite into different sizes.
2. Washing & Scrubbing
– Log Washers / Rotary Scrubbers: Remove clay and sticky impurities.
– Attrition Scrubbers: Help in liberating fine particles from bauxite.
3. Gravity Separation
– Spiral Classifiers: Separate coarse and fine particles.
– Hydrocyclones: Remove silica and other light impurities.
– Jigging Machines (like Batac Jig): Effective for removing iron-rich minerals.
4. Magnetic Separation
– Low-Intensity Magnetic Separators (LIMS): Remove ferromagnetic minerals like magnetite.
– High-Gradient Magnetic Separators (HGMS): For weakly magnetic impurities.
5. Flotation (If Needed)
– Froth Flotation Machines: Used when silica content is high; chemicals like collectors and depressants help separate alumina from silica.
6. Dewatering & Drying
– Thickeners / Filter Presses: Reduce moisture content.
– Rotary Dryers: Final drying before shipment or refining.
Key Manufacturers & Suppliers in India
– Metso, Terex, Sandvik (Crushing & Screening)
– Outotec, FLSmidth (Beneficiation & Flotation)
– Eriez, Star Trace (Magnetic Separation)
– CDE Asia (Washing & Scrubbing Solutions)
Major Bauxite Beneficiation Plants in India
– Hindalco (Odisha)
– NALCO (Damanjodi, Odisha)
– Vedanta Resources
Would you like recommendations for a specific type of bauxite ore or a particular beneficiation challenge?
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