论述了再生铝产业的现状和营销市场，指出规模经济是再生行业的主流，再生铝的产品结构在逐渐向变形铝合金的方向发展。市场需求和技术创新是推动再生铝产业发展的两个主要因素。

The significance of metals recycling is elucidated. The present situation and the sale markets of aluminium recycling industry are introduced. The economic scale as a central concern and the gradual change of the product structure of A1 scrap recycling are pointed out. Wrought A1 alloy billet will become an important product. The paper holds that market demand and technical innovation are the two main motive powers for the development of secondary aluminium industry.