Method for extracting cobalt from vanadic titanomagnetite and preparing superfine cobalt powder

• Main Authors: ZAN LINHAN, WANG YUNHUA, YANG YAOQUAN, HE DEWU
• Format: Patent
• Language: Chinese; English
• Published: 18.01.2012
• Subjects: CASTING; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

The invention discloses a method for extracting cobalt from vanadic titanomagnetite and preparing superfine cobalt powder, which comprises the following steps of: performing grinding and floatation; performing sulphidation roasting; leaching; extracting and purifying; preparing cobaltous oxalate; and preparing cobalt powder, wherein in the step of performing grinding and floatation, vanadic titanomagnetite concentrate is ground until grains with the granularity of -200 meshes account for over 90 percent, a floatation reagent of xanthate is used for floatation, 100 to 1,000g of floatation agent is added into each ton of vanadic titanomagnetite concentrate, and linnaeite concentrate with the sulfur content of more than or equal to 30 percent and the cobalt content of more than or equal to 0.3 percent is obtained. By the method, the vanadic titanomagnetite concentrate is subjected to floatation, so that the sulfur content of the vanadic titanomagnetite concentrate is greatly reduced, the quality of the vanadic t