美国是世界上最大的铝生产国和消费国之一,美国能源部在2004年的年度报告《铝——未来的工业》中表明,美国的铝需求在过去10年里的增长率为3.6%。2002年美国国内原铝产量为270万吨,进口原铝370万吨。再熔金属铝即铝废料回收再生的数量1960年仅为原铝产量的18%,到2002年再熔铝产 The United States is one of the largest producers and consumers of aluminum in the world. The U.S. Department of Energy indicated in its 2004 annual report, “Aluminum - Future Industries,” that aluminum demand in the United States has increased by 3.6% over the past 10 years. In 2002, the United States produced 2.7 million tons of primary aluminum and 3.7 million tons of primary aluminum. The amount of remelted metal aluminum, the amount of recovered aluminum scrap, was only 18% of primary aluminum output in 1960,