随着铸造生产机械化的发展,树脂砂及各种化学粘结剂、有机粘结剂的应用,新砂和湿法再生旧砂的烘干已成为一道极为重要而不可缺少的工艺工序。但目前国内外的烘砂工艺普遍存在着能耗大、烘干后砂温高、劳动条件差等问题。对于如何降低能耗、达到烘干的工艺要求,我们进行了电阻式低温热风送砂的探讨, With the development of foundry mechanization, the application of resin sand and various chemical binders and organic binders, drying of new sand and wet recycled old sand have become an extremely important and indispensable process. However, at present, there is a widespread problem of high energy consumption, high sand temperature after drying and poor working conditions at home and abroad. For how to reduce energy consumption, drying process to meet the requirements, we conducted a study of the resistance of low temperature hot air sand,