우간다의 1500 TPD 코발트-니켈 라테라이트 처리 파일럿 플랜트

광물 준비 및 농축:

• 파쇄 및 세척: Two-stage crushing and attrition scrubbing to break down clayey material and liberate fines.
• 크기 분류 및 탈수 처리: Hydrocyclones and vibrating screens remove fine, low-grade silts and clays to upgrade the feed to the leaching circuit.

역류 탈리 (CCD) 및 용액 정제:

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

폐기물 및 잔여물 관리:

• 장비: Paste thickener, filter press, lime dosing system.
• 기능: 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.

고압 산 침출(HPAL) – 파일럿 시스템:

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

금속 회수 및 침전:

• 장비: Reactors, neutralization tanks, and filters.
• 기능: 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.