Oxygen pressure leaching method for nickel sulfide concentrate

The invention discloses an oxygen pressure leaching method for nickel sulfide concentrate. The method comprises the following steps of adding water into the nickel sulfide concentrate, and finely grinding to obtain ore pulp; mixing the ore pulp with two-stage oxygen pressure leaching liquid, control...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: HE XINGMIN, TAN RONGHE, LIU ZILIANG, WANG HENGHUI, YU RIQUAN, DONG XIAOWEI, TONG YIZHE, YIN ZEHUI
Format: Patent
Sprache:chi ; eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The invention discloses an oxygen pressure leaching method for nickel sulfide concentrate. The method comprises the following steps of adding water into the nickel sulfide concentrate, and finely grinding to obtain ore pulp; mixing the ore pulp with two-stage oxygen pressure leaching liquid, controlling the liquid-solid ratio to be (2-3): 1 and the initial acid concentration to be 40-50g/L, performing first-stage oxygen pressure leaching in a first high-pressure kettle, and performing solid-liquid separation to obtain first-stage oxygen pressure leaching liquid and first-stage oxygen pressure leaching residues; feeding the first-stage oxygen pressure leaching liquid into a second high-pressure kettle, adding a sulfuric acid solution, controlling a liquid-solid ratio to be (2-3): 1, and the initial acid concentration to be 90-100 g/L, introducing oxygen, performing second-stage oxygen pressure leaching, then performing solid-liquid separation, and obtaining second-stage oxygen pressure leaching liquid and seco