A leaching agitation tank is a crucial piece of equipment in gold mining, particularly in the cyanidation process where gold is extracted from ore through chemical dissolution. Below is an overview of its key features, working principles, and applications:
Key Features of Leaching Agitation Tanks:
1. Design & Construction
– Made of corrosion-resistant materials (e.g., stainless steel, rubber-lined steel, or fiberglass).
– Equipped with an agitator (impeller or turbine) to ensure uniform mixing.
– Often includes baffles to enhance slurry agitation and prevent vortex formation.
2. Agitation Mechanism
– Mechanical agitators (impellers) or compressed air (Pachuca tanks) keep the slurry in suspension.
– Ensures optimal contact between gold-bearing ore and leaching agents (e.g., cyanide or thiosulfate).
3. Leaching Efficiency
– Facilitates rapid dissolution of gold by maintaining proper oxygen levels and reagent distribution.
– Can operate in batch or continuous modes depending on processing needs.
4. Temperature & pH Control
– Some tanks include heating/cooling systems to optimize reaction kinetics.
– pH sensors monitor and adjust conditions for effective leaching.
Working Principle:
1. The crushed ore slurry is fed into the tank along with a leaching agent (e.g., sodium cyanide).
2. The agitator ensures thorough mixing, allowing the gold to dissolve into the solution.
3. The leached solution (pregnant liquor) is then sent for further processing (e.g., carbon adsorption or electrowinning).
Applications:
– Used in CIL (Carbon-in-Leach) and CIP (Carbon-in-Pulp) processes for gold recovery.
– Suitable for processing oxidized ores, sulfide ores, and refractory gold ores after pretreatment.
Advantages:
✔ High leaching efficiency due to strong agitation.
✔ Customizable for different ore types and plant capacities.
✔ Can be integrated with other gold extraction equipment (e.g., thickeners, filters).
Manufacturers & Suppliers:
– Leading brands include FLSmidth, Outotec (Metso), Yantai Jinpeng, and Xinhai Mining.
Would you like details on specific models or operational best practices?
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