钼资源回收工艺现状及展望

Present status and prospect of technological process of recovery of molybdenum resources

介绍了钼资源的重要性及其二次资源回收的必要性。以含钼废催化剂、钼酸铵生产废水、钼金属制品废料为例,介绍了回收二次资源中钼的方法。重点对常用的溶剂萃取法、焙烧-碱浸法和离子交换法等进行了详细评述,分析了各种方法的原理和优缺点。最后提出当前回收工艺中存在的问题,特别是焙烧过程中热能的回收和低浓度有毒气体的处理、生产能力的提高及新的污染的解决等。并对该领域未来发展前景进行了展望。

Importance of Mo resources and necessity of recovering its secondary resources were introduced. Taking waste Mo catalyst, wastewater from ammonium molybdate production, and waste metal products of Mo as examples, the methods of recovering Mo in secondary resources were described, especially, the most commonly used methods, such as solvent extraction method, roasting.alkali extracting method, and ion exchange method, were reviewed in detail. Principles, ad- vantages and disadvantages of different methods were analyzed. Some problems, especially recovery of thermal energy and treatment of low concentration toxic gas in the process of roasting,improvement of production capacity, and solutions of new pollution, existed in those processes were put forward, and the future development tendency of recovering Mo was prospec- ted.