(中南大學 冶金與環(huán)境學院，長沙 410083)
摘 要: 利用重金屬冶金中的熔煉技術，采用輝鉬礦與白冰銅造锍熔煉、富氧吹煉使鉬氧化揮發(fā)的新方法，實現輝鉬礦中鉬的提取，研究造锍過程中白冰銅溶解輝鉬礦的行為以及物料配比、吹煉溫度和空氣流量等因素對MoO3揮發(fā)率的影響。結果表明：當冰銅與輝鉬礦的質量比不低于12:5、吹煉溫度不低于1150 ℃時，輝鉬礦能完全溶解到白冰銅中形成共熔體；優(yōu)化后的吹煉條件如下：按白冰銅與輝鉬礦的質量比為150:30配料混合均勻，將混合物在1300 ℃下保溫5 h，再以10 L/h的氣流量吹煉1 h，MoO3的揮發(fā)率達到70.79%。
關鍵字: 輝鉬礦；冰銅；造锍；吹煉
（School of Metallurgy and Environment, Central South University, Changsha 410083, China）
Abstract:A novel method of recovering molybdenum directly from gas phase was proposed. A smelting and converting process was put forward based on the new idea, during which molybdenite dissolved in white copper matte and was extracted from the copper molybdenum matte after its oxidization and volatilization. The behavior of molybdenite dissolution in copper matte and the effects of mixture ratio, smelting temperature and air flow were investigated. The results show that molybdenite can be digested completely into copper matte when m(copper matte)/m(molybdenite) is not less than 12:5 (mass ratio) and smelting temperature is above 1150 ℃. The optimum converting condition is determined as follows: The matte smelting was carried out at 1300 ℃ for 5 h when the mixture ratio of copper matte to molybdenite is 150:30, and then the air was blown into the melt with air flow of 10 L/h at 1300 ℃ for 1 h. The evaporation rate of MoO3 from the molybdenite is up to 70.79% under the optimum condition.
Key words: molybdenite; copper matte; matte smelting; converting
