【摘要】 本文论述了对铸造废旧型砂再生利用的必要性，同时对废旧型砂再生原理、方法和工艺进行了探讨，认为对旧型砂再生利用可行且具有良好的经济效益和环境效益，值得铸造行业借鉴。更多还原

【Abstract】 This paper deals with the necessity of regeneration of used moulding sand for casting, meamwhile discusses the rationale,method and process in terms of regeneration of the used sand It is concluded that regenerative use of waste moulding sand brings about good effect both in economy and for environmental protection更多还原