Method for roasting molybdenum concentrate

• Main Authors: WU ZENGLING, WANG CHUN, LIU XIAOYING, ZOU LAICHANG, LAN BIBO, ZHONG SHUIPING, LIU TAO
• Format: Patent
• Language: Chinese; English
• Published: 05.02.2014
• Subjects: 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; 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; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to a method for roasting a molybdenum concentrate. The method comprises the steps of mixing a certain amount of sodium sulfate into the molybdenum concentrate, then forming balls and roasting; performing alkaline leaching on calcine; performing ion exchange adsorption on molybdenum leachate, then performing liquid crystallization to obtain sodium sulfate, and returning the sodium sulfate to serve as a molybdenum concentrate roasting additive; performing molybdenum concentrate ball forming by using a liquid after crystallization. By adopting the method, the chemical dosage of molybdenum calcine alkaline leaching and the production cost can be greatly reduced; moreover, the sodium sulfate obtained through liquid crystallization after the ion exchange adsorption during a molybdenum extraction process flow and the liquid after crystallization can be fully used for performing molybdenum concentrate ball forming, and the wastewater treating amount can be reduced.