Impianto pilota di lavorazione di laterite di cobalto-nickel da 1500 TPD in Uganda

Preparazione e Beneficiamento delle ORE:

• Frantumazione e Lavaggio: Two-stage crushing and attrition scrubbing to break down clayey material and liberate fines.
• Classificazione delle dimensioni e disidratazione: Hydrocyclones and vibrating screens remove fine, low-grade silts and clays to upgrade the feed to the leaching circuit.

Decantazione controcorrente (CCD) e purificazione delle soluzioni:

• Attrezzature: Multi-stage thickener series.
• Funzione: Separates the pregnant leach solution (PLS) from residual solids (leach residue).

Gestione dei residui e dei fanghi:

• Attrezzature: Paste thickener, filter press, lime dosing system.
• Funzione: Neutralizes and conditions leach residue for safe, dry-stack disposal.

Adaptable to Variable Feed: The process flow and equipment are designed to handle the natural variability in Ugandan laterite ore types (limonite vs. saprolite ratio).

Data-Driven Design: The pilot plant is fully instrumented to collect comprehensive metallurgical, operational, and economic data essential for bankable feasibility studies and ESG reporting.

Leachatura Acida ad Alta Pressione (HPAL) – Sistema Pilota:

• Attrezzature: Titanium-clad autoclaves, acid pre-heaters, and flash tanks.
• Funzione: Leaches nickel and cobalt from upgraded laterite ore using sulfuric acid under high temperature and pressure.

Recupero e Precipitazione dei Metalli:

• Attrezzature: Reactors, neutralization tanks, and filters.
• Funzione: Purifies the PLS (removes iron, aluminum) and precipitates Nickel and Cobalt as a high-grade Mixed Hydroxide Precipitate (MHP) using limestone slurry and magnesia.

Modular HPAL Pilot Unit: A compact, skid-mounted HPAL system designed to generate accurate scale-up data, process kinetics, and acid consumption rates for a future full-scale commercial plant.