引言发达资本主义国家各种有色金属的年总消费量在2千万吨以上。铜、铝、锌、铅、镍和锡占总消费量的97%多。钛、镁、钴、难熔金属、稀有金属和贵金属则不到有色金属总产量和总消费量的2.5%。但是,这些金属在一些新技术部门——火箭制造、原子能、无线电电子技术、计算技术、仪器制造 Introduction The total annual consumption of various non-ferrous metals in developed capitalist countries is over 20 million tons. Copper, aluminum, zinc, lead, nickel and tin accounted for more than 97% of total consumption. Titanium, magnesium, cobalt, refractory metals, rare metals and precious metals are less than 2.5% of the total non-ferrous metals production and total consumption. However, these metals are used in a number of new technology sectors - rocket manufacturing, atomic energy, radio electronic technology, computing technology, instrumentation