发达资本主义国家有色金属的总消费量每年超过2000万吨,其中美国有色金属的消费量大约为900万吨。大吨位有色金属铜、铝、锌和铅的消费占有色金属总消费的97%以上,其余金属(除用于生产铁合金、放射性金属、碱金属和碱土金属所消费的金属之外)的消费分率总共不超过3％,因而有充分理由可以认为消费量不足总消费量3%的 The total consumption of non-ferrous metals in developed capitalist countries exceeds 20 million tons a year, of which the non-ferrous metals in the United States consumes about 9 million tons. The consumption of large tonnages of nonferrous metals copper, aluminum, zinc and lead accounted for over 97% of the total consumption of non-ferrous metals and the consumption of the remaining metals (other than metals consumed for the production of ferroalloys, radioactive metals, alkali and alkaline earth metals) The total rate of no more than 3%, so there are good reasons to think consumption less than 3% of total consumption