Method for separating nickel concentrate from laterite-nickel ore

The invention provides a method for separating nickel concentrate from laterite nickel ore. The method comprises the following steps: S1, drying laterite-nickel ore to obtain dried laterite-nickel ore; s2, the dried laterite-nickel ore, gypsum and a reducing agent are mixed and then added into a rot...

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Bibliographische Detailangaben
Hauptverfasser:	QI YONGFENG, DAI WENBIN, CHEN XUEGANG, LU JINZHONG, PEI ZHONGYE, KANG JINXING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMISTRY DIFFERENTIAL SEDIMENTATION FERROUS OR NON-FERROUS ALLOYS FLOTATION MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROMSOLID MATERIALS OR FLUIDS MANUFACTURE OF IRON OR STEEL METALLURGY METALLURGY OF IRON PERFORMING OPERATIONS PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention provides a method for separating nickel concentrate from laterite nickel ore. The method comprises the following steps: S1, drying laterite-nickel ore to obtain dried laterite-nickel ore; s2, the dried laterite-nickel ore, gypsum and a reducing agent are mixed and then added into a rotary kiln to be roasted, and vulcanized roasted sand is obtained; and S3, the sulfurized calcine is subjected to flotation, and nickel sulfide, iron sulfide and primary tailings are obtained. Through pre-reduction in the rotary kiln, on one hand, valuable metal of the laterite-nickel ore can be subjected to a coupling reaction of reduction and vulcanization, the metal softening temperature is reduced, particle aggregation and growth are facilitated, nickel matte particles are obtained, and magnetic separation metal particles are obtained; and on the other hand, CaO and sulfur generated by gypsum decomposition are fully utilized, CaO promotes laterite-nickel ore phase transformation, and separation of magnetic iron,