(1. 矿冶科技集团有限公司 矿物加工科学与技术国家重点实验室，北京 102628；
2. 广东省科学院 资源利用与稀土开发研究所 稀有金属分离与综合利用国家重点实验室，广州 510650)
摘 要: 氧化矿和二次资源难以采用成熟的浮选技术对其中重金属资源进行回收，而通过硫化技术的预处理，可使物料中生成可浮性较强的重金属硫化物。硫化技术中，中高温焙烧技术可对重金属进行硫化，在提高硫化率的同时，改善物料的物化性质。因此，硫化焙烧技术的效率高、适用性强，广泛应用于难选物料的预处理。本文结合重金属的硫化反应热力学分析，通过硫化焙烧在氧化矿和二次资源的研究实例，归纳焙烧条件对硫化物的生成和分离性质的影响，从“硫化的最终目的是金属的有效分选”的角度出发，指出硫化焙烧技术应完善的研究内容，并对未来的技术发展进行展望。
关键字: 硫化焙烧；重金属；氧化矿；二次资源
（1. State Key Laboratory of Mineral Processing Science and Technology, BGRIMM Technology Group, Beijing 102628, China;
2. State Key Laboratory of Rare Metals Separation and Comprehensive Utilization, Institute of Resource Utilization and Rare Earth Development, Guangdong Academy of Science, Guangzhou 510650, China）
Abstract:It''''s difficult to use flotation for heavy metals recovery from oxide ore or secondary resource. But through the pretreatment of sulfidation, heavy metal sulfides, with strong floatability, can be generated in the material. In sulfidation technology, heavy metals can be sulfidated in the medium-high temperature roasting atmosphere, which can improve the sulfidation rate of heavy metals and physicochemical properties of the material. Therefore, the sulfidation roasting, which has high efficiency and strong applicability, has been widely used in the pretreatment of refractory materials. By combining the thermodynamic analysis of the sulfidation reaction of heavy metals and the research examples of sulfidation roasting in oxide ore and secondary resource, the influences of roasting conditions on the formation and property of heavy metal sulfides were analyzed. Then, from the standpoint that the ultimate goal of sulfidation is effective separation of metals, the research contents of sulfidation roasting that should be perfected in the future were concluded, and the future technological development was prospected.
Key words: sulfidation roasting; heavy metals; oxide ore; secondary resource
