从钼矿中提取铼的工艺改进及研究进展

PROCESS IMPROVEMENT AND RESEARCH PROGRESS FOR THE EXTRACTION OF RHENIUM FROM MOLYBDENUM MINE

铼位于元素周期表ⅦB族,属于稀散金属。由于铼具有高熔点、高硬度、抗蠕变性、抗腐蚀性以及良好的塑性等优异性能,使得铼能广泛的应用于热电偶、金属涂层和电子工业。其在制造航空发动机涡轮叶片和发动机喷管上的作用,是其他金属不能替代的。此外,铼具有较高的催化活性,其与贵金属铂组成的铂-铼催化剂是石油催化裂化重整过程中的良好催化剂。目前,学者对铼及其合金的开发利用高度重视。但是铼资源稀缺,在地壳中丰度极低并且分散,导致铼的产量低,价格昂贵而限制了铼的应用。国内外学者根据不同含铼物料,采取不同的处理方法进行了大量的实验研究,以寻求有效的分离富集和提取铼的方法。

Rhenium is in the periodic table Ⅶ B group,belongs to scattered metals. Because rhenium has high melting point,high hardness,creep resistance,corrosion resistance and good plasticity,excellent performance,it can be widely used in the thermocouple,rhenium metal coating and electronic industries. Its effect in the manufacturing of aeroengine turbine blade and engine nozzlel can＇t be replaced. In addition,rhenium has high catalytic activity,platinum- rhenium catalyst is good catalyst in the process of oil catalytic cracking reforming. At present,the scholars pay high attention to exploit and utilize rhenium and its alloys. But rhenium resources are scarce,very low abundance in the earth＇s crust and scattered,so the output of rhenium is low,the price is expensive and restricts the application of rhenium. Scholars both at home and abroad have carried out a large number of different treatment methods for experimental research,to seek effective separation,enrichment and extraction method of rhenium.