METHOD FOR PRODUCING HIGH-NICKEL MATTE FROM FERRONICKEL

• Main Authors: LIU, Yuntao, RUAN, Dingshan, CHEN, Huaixing, ZHANG, Zhentao, LI, Changdong, TANG, Shijian
• Format: Patent
• Language: Chinese; English; French
• Published: 15.08.2024
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROMSOLID MATERIALS OR FLUIDS; METALLURGY; 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

Disclosed is a method for producing high-nickel matte from ferronickel, comprising: mixing ferronickel particles with quartz and performing oxidation roasting to obtain a mixed melt containing ferronickel oxide and ferronickel silicate; granulating and crushing the mixed melt and performing magnetic separation to obtain a magnetic separation concentrate and magnetic separation tailings; performing reduction roasting on the magnetic separation concentrate to obtain ferronickel foam; and mixing the ferronickel foam with sulfur and performing vulcanization roasting to obtain high-nickel matte. In the present invention, ferronickel and quartz undergo oxidation roasting to generate ferronickel oxide having a high nickel content and ferronickel silicate having a high iron content, ferronickel oxide and ferronickel silicate are separated by means of magnetic separation, the magnetic separation concentrate ferronickel oxide undergoes reduction roasting to generate ferronickel foam, and the ferronickel foam undergoes