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介绍了该厂旧砂再生系统的组成部分。从再生砂的表观质量、含泥量、粒度分布和代替部分新砂配制的型砂性能方面论述了再生砂的质量。经济效益分析说明该厂采用旧砂再生可年获经济效益３０万元。
The components of the old sand regeneration system are introduced. The quality of reclaimed sand is discussed in terms of the apparent quality of reclaimed sand, clay content, particle size distribution and the properties of sand which is prepared by replacing some of the new sand. Economic analysis shows that the plant can be used to regenerate the sand annual economic benefits 300000 yuan.