Indonesia is a significant player in the global gold mining industry, with several large-scale mines and small-scale artisanal operations. Gold mineral processing in Indonesia requires specialized equipment to efficiently extract and refine gold from ore. Below is an overview of the key equipment used in gold mineral processing in Indonesia:
1. Crushing Equipment
– Jaw Crusher: Primary crushing of gold-bearing ore.
– Cone Crusher: Secondary crushing for finer particle size.
– Impact Crusher: Used for hard rock gold ore processing.
2. Grinding Equipment
– Ball Mill: Grinds crushed ore into fine powder for further processing.
– Rod Mill: Alternative grinding method for certain types of ores.
– SAG Mill (Semi-Autogenous Grinding): Used in large-scale mining operations.
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3. Gravity Separation Equipment
– Shaking Tables: Separates gold from lighter materials based on density differences.
– Centrifugal Concentrators (e.g., Knelson, Falcon): High-efficiency recovery of fine gold particles.
– Jigs & Spiral Classifiers: Used for coarse gold recovery before leaching processes.
4. Flotation Equipment (for sulfide ores)
– Flotation Cells: Separates gold-bearing minerals from waste rock using chemicals and air bubbles.
5. Leaching & Adsorption Equipment (for free-milling gold)
– CIL (Carbon-in-Leach) / CIP (Carbon-in-Pulp) Tanks: Gold dissolves in cyanide solution and adsorbs onto activated carbon.
– Heap Leaching Pads: Used for low-grade ores where crushed ore is stacked and irrigated with cyanide solution.
6. Elution & Electrowinning
– Elution Column: Strips gold from loaded carbon using high-temperature and pressure solutions.
– Electrowinning Cells: Recovers gold from solution by electroplating onto cathodes.
7. Smelting & Refining Equipment
– Induction Furnace / Electric Arc Furnace: Melts gold concentrate into doré bars.
– Gold Refining Systems (Aqua Regia, Miller Process): Purifies gold to 99.9%+ purity for market sale.
8. Tailings Management
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