论文部分内容阅读
一、前言有色金属及其合金具有耐蚀、导电性、导热性、延展性、耐高温、高压与强度大等特点,因此,是现代工业、现代国防、现代科学尖端技术发展中不可缺少的重要物资。我国是世界上有色金属矿产资源丰富的国家之一,有“有色金属王国”之称。由于矿石品位低、埋藏深、化学成份复杂、产地偏僻、交通不便、提炼技术水平不高,因此就当前来说,我国有色金属的提取特别是稀有金属的提取,是一个能耗大、劳动生产率较低的部门。基于上述原因使得稀有金属价格昂贵,在工业上广泛应用受到限制。由于我国能
I. Introduction Non-ferrous metals and their alloys have the characteristics of corrosion resistance, electrical conductivity, thermal conductivity, ductility, high temperature resistance, high pressure and strength. Therefore, they are indispensable in the development of modern industry, modern national defense and advanced science and technology of modern science Materials. China is one of the countries rich in mineral resources of non-ferrous metals in the world, and has the title of “non-ferrous metal kingdom.” Due to the low grade of ore, deep buried, complex chemical composition, remote location, traffic inconvenience, low level of refining technology, so for the moment, the extraction of non-ferrous metals in China, especially rare metals, is a large energy consumption, labor productivity Lower department. Due to the above reasons, rare metals are expensive and their applications in industry are limited. Because my country can