50TPH Gold Ore Heap Leaching Equipment Shipping To Port

50 TPH Gold Ore Heap Leaching Equipment system is an industrialized mineral extraction system designed for the large-scale processing of low-grade gold ores. With a design capacity of 50 Tons Per Hour (TPH), the system efficiently recovers gold from ore through the heap leaching process.

Rather than a single machine, this equipment system is a comprehensive, integrated process plant encompassing stages such as feeding, heap construction, irrigation (spraying), solution recovery, and metal extraction. It is widely applied at mine sites—particularly for treating oxidized gold ores or low-grade primary ores—offering significant advantages including low capital investment (CAPEX), ease of operation, and high adaptability.

I. Core Components and Workflow

• Crushing and Screening System

  • Run-of-mine (ROM) ore is first processed through jaw crushers and cone crushers for two-stage crushing, with particle size controlled within 10–30mm.

  • Vibratory screens separate the qualified fractions to prevent oversized particles from compromising permeability, ensuring uniform penetration of the leaching solution.

• Stacking and Conveying System

  • Belt conveyors or loaders transport the crushed ore to the leach pad (typically a gently sloped platform lined with HDPE geomembrane).

  • Heap height is generally maintained at 1–4 meters, adjusted based on ore permeability to optimize aeration and rinsing effects.

• Irrigation and Leaching System

  • A network of corrosion-resistant pipes and emitter/sprinkler arrays continuously applies a lixiviant (containing cyanide or eco-friendly reagents like thiosulfate) to the heap.

  • The leaching cycle typically lasts 30–60 days, during which gold dissolves into the pregnant leach solution (PLS) in the form of complexes.

• Pregnant Solution Collection and Metal Recovery

  • The filtrate collects via a bottom drainage system into a pregnant solution pond, where gold is extracted using carbon adsorption (CIP/CIL processes) or zinc precipitation (Merrill-Crowe process).

  • The barren solution (post-adsorption) is regenerated and recycled to minimize reagent consumption.

• Automation and Environmental Protection

  • Equipped with a PLC control system for the automated adjustment of irrigation rates, pH levels, and flow volumes.

  • Includes sedimentation ponds, neutralization tanks, and dry-stack tailings facilities to prevent leakage pollution and ensure environmental compliance.

II. Applicable Ore Types and Technical Advantages

• Target Ore: Primarily designed for oxidized gold ores, gold-bearing waste rock, and low-grade open-pit ores (typically with grades below 1g/t).

• Recovery Rate: Under optimal conditions, the gold leaching recovery rate can reach 70%–85%.

• Cost Advantage: Compared to flotation and smelting, heap leaching reduces CAPEX by 30%–50% and offers significantly lower operating costs (OPEX).

• Scalability: Modular design supports capacity expansion, making it ideal for small-to-medium mines or phased development projects.

III. Typical Application Scenarios

• Remote Mining Sites: Due to its simple process, low water consumption, and minimal power dependency, it is highly suitable for areas with weak infrastructure.

• Tailings/Waste Reprocessing: Used for secondary gold recovery from historical waste rock stockpiles to improve resource utilization.

• Eco-friendly Alternatives: Compatible with cyanide-free leaching technologies (e.g., Thiosulfate process) to mitigate environmental risks.