根据我国《有色金属工业“十五”规划》 ,在“十五”期间 ,信息产业、交通、能源、建筑等消费量较大的行业发展趋势测算 ,有色金属需求量到 2 0 0 5年铜、铝、铅、锌将分别达到 2 0 0万ｔ、380万ｔ、6 0万ｔ和 12 0万ｔ,其中铜、铝年均消费增长率分别为 1%和 2 2 % ,铅、锌则 According to the “10th Five-Year Plan” for non-ferrous metal industry in China, during the “10th Five-Year Plan” period, the development trend of industries with large consumption such as information industry, transportation, energy and construction is estimated. The demand for non-ferrous metals will reach the level of 2005 Aluminum, lead and zinc will reach 20 million tons, 3.8 million tons, 600,000 tons and 1.2 million tons respectively. The average annual growth rates of copper and aluminum are 1% and 22% respectively. The proportions of lead and zinc then