ウガンダの1500 TPDコバルト-ニッケルラテライト処理パイロットプラント

鉱石の準備と選鉱

• 粉砕とスクラビング Two-stage crushing and attrition scrubbing to break down clayey material and liberate fines.
• サイズ分類および脱粘土： Hydrocyclones and vibrating screens remove fine, low-grade silts and clays to upgrade the feed to the leaching circuit.

カウンターカレントデカンテーション（CCD）および溶液精製：

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

テーリングおよび残渣管理：

• 装置： Paste thickener, filter press, lime dosing system.
• 機能: 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.

高圧酸浸出（HPAL） - パイロットシステム:

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

金属回収と沈殿

• 装置： Reactors, neutralization tanks, and filters.
• 機能: 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.